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FC with Synergy 3820C 10/20Gb CNA and VMware ESXi

Posted: November 12th, 2017 | Tags: esxcli, esxi, FCoE, vmware | Category: Virtualization | §

(This post is intentionally brief because I don’t want to sidetrack by talking more on the things I link to. I am trying to clear my browser tabs by making blog posts on what’s open, so I want to focus on just getting stuff posted. :)

At work we are moving HPE Synergy now. We have two Synergy 12000 frames with each frame containing a Virtual Connect SE 40Gb F8 Module for Synergy. The two frames are linked via Synergy 20Gb Interconnect Link Module(s). (Synergy has a master/ satellite module for the Virtual Connect modules so you don’t need a Virtual Connect module per frame (or enclosure as it used to be in the past)). The frames have SY 480 Gen 10 compute modules, running ESXi 6.5, and the mezzanine slot of each compute module has a Synergy 3820C 10/20Gb CNA module. The OS in the compute modules should see up to 4 FlexNIC or FlexHBA adapters per Virtual Connect module.

The FlexHBA adapters are actually FCoE adapters (they provide FCoE and/ or iSCSI actually). By default these FlexHBA adapters are not listed as storage adapters in ESXi so one has to follow the instructions in this link. Basically:

1) Determine the vmnic IDs of the FCoE adapters:

esxcli fcoe nic list

1	esxcli fcoe nic list

2) Then do a discovery to activate FCoE:

esxcli fcoe nic discover –n vmnicX

1	esxcli fcoe nic discover –n vmnicX

As a reference to my future self, here’s a blog post on how to do this automatically for stateless installs.

Totally unrelated to the above, but something I had found while Googling on this issue: Implementing Multi-Chassis Link Aggregation Groups (MC-LAG) with HPE Synergy Virtual Connect SE 40Gb F8 Module and Arista 7050 Series Switches. A good read.

Also, two good blog posts on Synergy:

[Aside] ESXCLI storage commands

Posted: November 12th, 2017 | Tags: esxcli, storage, vmware | Category: Asides, Virtualization | §

Had to spend some time recently identifying the attached storage devices and adapters to an ESXi box and the above links were handy. Thought I should put them in here as a reference to myself.

Script to run esxcli unmap on all datastores attached to an ESXi host

Posted: August 1st, 2017 | Tags: bash, esxcli, loop, unmap | Category: Virtualization | §

It’s a good idea to periodically run the UNMAP command on all your thin-provisioned LUNs. This allows the storage system to reclaim deleted blocks. (What is SCSI UNMAP?)

The format of the command is:

esxcli storage vmfs unmap -l <volume_label>

1	esxcli storage vmfs unmap -l <volume_label>

I wanted to make a script to run this on all attached datastores so here’s what I came up with:

#!/bin/sh
for datastore in `esxcli storage filesystem list | grep "VMDATA" | awk -F " " '{print $2}'`; do
  echo "Performing UNMAP on $datastore ..."
  esxcli storage vmfs unmap -l $datastore
done

#!/bin/sh

for datastore in `esxcli storage filesystem list | grep "VMDATA" | awk -F " " '{print $2}'`; do

echo "Performing UNMAP on $datastore ..."

esxcli storage vmfs unmap -l $datastore

done

The esxcli storage filesystem list command outputs a list of datastores attached to the system. The second column is what I am interested in, so that’s what awk takes care for me. I don’t want to target any local datastores, so I use grep to filter out the ones I am interested in.

Next step would be to add this to a cron job. Got to follow the instructions here, it looks like.

Migrating VMkernel port from Standard to Distributed Switch fails

Posted: May 24th, 2017 | Tags: distributed switch, esxcli, esxi, networking, standard switch, vds, vmware | Category: Virtualization | §

I am putting a link to the official VMware documentation on this as I Googled it just to confirm to myself I am not doing anything wrong! What I need to do is migrate the physical NICs and Management/ VM Network VMkernel NIC from a standard switch to a distributed switch. Process is simple and straight-forward, and one that I have done numerous times; yet it fails for me now!

Here’s a copy paste from the documentation:

Navigate to Home > Inventory > Networking.
Right-click the dVswitch.
If the host is already added to the dVswitch, click Manage Hosts, else Click Add Host.
Select the host(s), click Next.
Select the physical adapters ( vmnic) to use for the vmkernel, click Next.
Select the Virtual adapter ( vmk) to migrate and click Destination port group field. For each adapter, select the correct port group from dropdown, Click Next.
Click Next to omit virtual machine networking migration.
Click Finish after reviewing the new vmkernel and Uplink assignment.
The wizard and the job completes moving both the vmk interface and the vmnic to the dVswitch.

Basically add physical NICs to the distributed switch & migrate vmk NICs as part of the process. For good measure I usually migrate only one physical NIC from the standard switch to the distributed switch, and then separately migrate the vmk NICs.

Here’s what happens when I am doing the above now. (Note: now. I never had an issue with this earlier. Am guessing it must be some bug in a newer 5.5 update, or something’s wrong in the underlying network at my firm. I don’t think it’s the networking coz I got my network admins to take a look, and I tested that all NICs on the host have connectivity to the outside world (did this by making each NIC the active one and disabling the others)).

First it’s stuck in progress:

And then vCenter cannot see the host any more:

Oddly I can still ping the host on the vmk NIC IP address. However I can’t SSH into it, so the Management bits are what seem to be down. The host has connectivity to the outside world because it passes the Management network tests from DCUI (which I can connect to via iLO). I restarted the Management agents too, but nope – cannot SSH or get vCenter to see the host. Something in the migration step breaks things. Only solution is to reboot and then vCenter can see the host.

Here’s what I did to workaround anyways.

First I moved one physical NIC to the distributed switch.

Then I created a new management portgroup and VMkernel NIC on that for management traffic. Assigned it a temporary IP.

Next I opened a console to the host. Here’s the current config on the host:

~ # esxcli network ip interface ipv4 get
Name  IPv4 Address  IPv4 Netmask   IPv4 Broadcast  Address Type  DHCP DNS
----  ------------  -------------  --------------  ------------  --------
vmk0  10.xxx.xx.30  255.255.255.0  10.xxx.xx.255   STATIC           false
vmk1  10.xxx.xx.24  255.255.255.0  10.xxx.xx.255   STATIC           false
vmk2  10.xxx.xx.25  255.255.255.0  10.xxx.xx.255   STATIC           false
vmk3  1.1.1.1       255.255.255.0  1.1.1.255       STATIC           false
vmk4  10.xxx.xx.23  255.255.255.0  10.xxx.xx.255   STATIC           false

~ # esxcli network ip interface ipv4 get

Name IPv4 Address IPv4 Netmask IPv4 Broadcast Address Type DHCP DNS

---- ------------ ------------- -------------- ------------ --------

vmk0 10.xxx.xx.30 255.255.255.0 10.xxx.xx.255 STATIC false

vmk1 10.xxx.xx.24 255.255.255.0 10.xxx.xx.255 STATIC false

vmk2 10.xxx.xx.25 255.255.255.0 10.xxx.xx.255 STATIC false

vmk3 1.1.1.1 255.255.255.0 1.1.1.255 STATIC false

vmk4 10.xxx.xx.23 255.255.255.0 10.xxx.xx.255 STATIC false

The interface vmk0 (or its IPv4 address rather) is what I wanted to migrate. The interface vmk4 is what I created temporarily.

~~I now removed the IPv4 address of the existing vmk NIC and assigned that to the new one. Also, confirmed the changes just to be sure.~~ As soon as I did so vCenter picked up the changes. I then tried to move the remaining physical NIC over to the distributed switch, but that failed. Gave an error that the existing connection was forcibly closed by the host. So I rebooted the host. Post-reboot I found that the host now thought it had no IP, even though it was responding to the old IP via the new vmk. So this approach was a no-go (but still leaving it here as a reminder to myself that this does not work).

I now migrated vmk0 from the standard switch to the distributed switch. As before, this will fail – vCenter will lose connectivity to the ESX host. But that’s why I have a console open. As expected the output of esxcli network ip interface list shows me that vmk0 hasn’t moved to the distributed switch:

So now I go ahead and remove the IPv4 address of vmk0 and assign that to vmk4 (the new one). Also confirmed the changes.

~ # esxcli network ip interface ipv4 set -i vmk0 -t none
~ # esxcli network ip interface ipv4 set -i vmk4 -I 10.xxx.xx.30 -N 255.255.255.0 -t static
~ # esxcli network ip interface ipv4 get

~ # esxcli network ip interface ipv4 set -i vmk0 -t none

~ # esxcli network ip interface ipv4 set -i vmk4 -I 10.xxx.xx.30 -N 255.255.255.0 -t static

~ # esxcli network ip interface ipv4 get

Next I rebooted (reboot) the host, and via the CLI I removed vmk0 (for some reason the GUI showed both vmk0 and vmk4 with the same IP I assigned above).

~ # esxcli network ip interface remove --interface-name vmk0

1	~ # esxcli network ip interface remove --interface-name vmk0

Reboot again!

Post-reboot I can go back to the GUI and move the remaining physical NIC over to the distributed switch. :) Yay!

Find the profiles in an offline ESXi update zip file

Posted: March 26th, 2017 | Tags: esxcli, esxi, updates, vmware | Category: Virtualization | §

I use esxcli to manually update our ESXi hosts that don’t have access to VUM (e.g. our DMZ hosts). I do so via command-line:

esxcli software profile update -d /absolute/path/to/zip/file -p name-of-profile

1	esxcli software profile update -d /absolute/path/to/zip/file -p name-of-profile

Usually the VMware page where I download the patch from mentions the profile name, but today I had a patch file and wanted to find the list of profiles it had.

One way is to open the zip file, then the metadata.zip file in that, and that should contain a list of profiles. Another way is to use esxcli:

esxcli software sources profile list -d /absolute/path/to/zip/file

1	esxcli software sources profile list -d /absolute/path/to/zip/file

Screenshot example:

Reboot a bunch of ESXi hosts one after the other

Posted: March 5th, 2017 | Tags: esxcli, get-esxcli, powercli, vmware | Category: PowerShell, Virtualization | §

Not a big deal, I know, but I felt like posting this. :)

Our HP Gen8 ESXi hosts were randomly crashing ever since we applied the latest ESXi 5.5 updates to them in December. Logged a call with HP and turns out until a proper fix is issued by VMware/ HPE we need to change a setting on all our hosts and reboot them. I didn’t want to do it manually, so I used PowerCLI to do it en masse.

Here’s the script I wrote to target Gen8 hosts and make the change:

$Hosts = Get-Cluster | Get-VMHost | ?{ $_.Model -match "Gen8$" }
foreach ($VMHost in $Hosts) {
  Write-Host "$VMHost"
  $ESXCli = Get-ESXCli -VMHost $VMHost 
  if (($ESXCli.system.settings.kernel.list() | ?{ $_.Name -eq "iovDisableIR" }).Configured -eq "TRUE") { $ESXCli.system.settings.kernel.set("iovDisableIR", "FALSE") }
}

$Hosts = Get-Cluster | Get-VMHost | ?{ $_.Model -match "Gen8$" }

foreach ($VMHost in $Hosts) {

Write-Host "$VMHost"

$ESXCli = Get-ESXCli -VMHost $VMHost

if (($ESXCli.system.settings.kernel.list() | ?{ $_.Name -eq "iovDisableIR" }).Configured -eq "TRUE") { $ESXCli.system.settings.kernel.set("iovDisableIR", "FALSE") }

}

I could have done the reboot along with this, but I didn’t want to. Instead I copy pasted the list of affected hosts into a text file (called ESXReboot.txt in the script below) and wrote another script to put them into maintenance mode and reboot one by one.

Get-Content .\ESXReboot.txt | %{ 
    $Server = $_;
    Write-Host -ForegroundColor Green "$Server"
    Write-Host -ForegroundColor Yellow "`tEntering maintenance mode"
    Set-VMHost $Server -State maintenance -Evacuate | Out-Null

    Write-Host -ForegroundColor Yellow -NoNewline "`tRebooting"
    Restart-VMHost $Server -Confirm:$false  | Out-Null

    do {
        sleep 15
        $ServerState = (Get-VMHost $Server).ConnectionState
        Write-Host -ForegroundColor Yellow -NoNewline "."
    } while ($ServerState -ne "NotResponding")
    Write-Host -ForegroundColor Yellow -NoNewline "(down)"

    do {
        sleep 30
        $ServerState = (Get-VMHost $Server).ConnectionState
        Write-Host -ForegroundColor Yellow -NoNewline "`."
    } while ($ServerState -ne "Maintenance")
    Write-Host -ForegroundColor Yellow "(up)"

    Write-Host -ForegroundColor Yellow "`tExiting maintenance mode"
    Set-VMHost $Server -State Connected  | Out-Null
    Write-Host -ForegroundColor Yellow "`tDone!"
    Write-Host ""
}

Get-Content .\ESXReboot.txt | %{

$Server = $_;

Write-Host -ForegroundColor Green "$Server"

Write-Host -ForegroundColor Yellow "`tEntering maintenance mode"

Set-VMHost $Server -State maintenance -Evacuate | Out-Null

Write-Host -ForegroundColor Yellow -NoNewline "`tRebooting"

Restart-VMHost $Server -Confirm:$false | Out-Null

do {

sleep 15

$ServerState = (Get-VMHost $Server).ConnectionState

Write-Host -ForegroundColor Yellow -NoNewline "."

} while ($ServerState -ne "NotResponding")

Write-Host -ForegroundColor Yellow -NoNewline "(down)"

do {

sleep 30

$ServerState = (Get-VMHost $Server).ConnectionState

Write-Host -ForegroundColor Yellow -NoNewline "`."

} while ($ServerState -ne "Maintenance")

Write-Host -ForegroundColor Yellow "(up)"

Write-Host -ForegroundColor Yellow "`tExiting maintenance mode"

Set-VMHost $Server -State Connected | Out-Null

Write-Host -ForegroundColor Yellow "`tDone!"

Write-Host ""

}

The screenshot output is slightly different from what you would get from the script as I modified it a bit since taking the screenshot. Functionality-wise there’s no change.

Downgrading ESXi Host

Posted: March 30th, 2016 | Tags: esx, esxcli, esxi, vmware | Category: Virtualization | §

Today I upgraded one of our hosts to a newer version than what was supported by our vCenter so had to find a way of downgrading it. The host was now at “5.5 Patch 10” (which is after “5.5 Update 3”) which our vCenter version only supported versions prior to “5.5 Update 3”. (See this post for a list of build numbers and versions; see this KB article for why vCenter and the host were now incompatible).

I found this blog post and KB article that talked about downgrading and upgrading. Based on those two here’s what I did to downgrade my host.

First, some terminology. Read this blog post on what VIBs are. At a very high level a VIB file is like a zip file with some metadata and verification thrown in. They are the software packages for ESX (think of it like a .deb or .rpm file). The VIB file contains the actual files on the host that will be replaced. The metadata tells you more about the VIB file – its dependencies, requirements, issues, etc. And the verification bit lets the host verify that the VIB hasn’t been tampered with, and also allows you to have various “levels” of VIBs – those certified by VMware, those certified by partners of VMware, etc – such that you as a System Admin can decide what level of VIBs you want installed on your host.

You can install/ remove/ update VIBs via the command esxcli:

# esxcli software vib
Usage: esxcli software vib {cmd} [cmd options]

Available Commands:
  get                   Displays detailed information about one or more installed VIBs
  install               Installs VIB packages from a URL or depot. VIBs may be installed, upgraded, or downgraded. WARNING: If your installation
                        requires a reboot, you need to disable HA first.
  list                  Lists the installed VIB packages
  remove                Removes VIB packages from the host. WARNING: If your installation requires a reboot, you need to disable HA first.
  update                Update installed VIBs to newer VIB packages. No new VIBs will be installed, only updates. WARNING: If your installation
                        requires a reboot, you need to disable HA first.

# esxcli software vib

Usage: esxcli software vib {cmd} [cmd options]

Available Commands:

get Displays detailed information about one or more installed VIBs

install Installs VIB packages from a URL or depot. VIBs may be installed, upgraded, or downgraded. WARNING: If your installation

requires a reboot, you need to disable HA first.

list Lists the installed VIB packages

remove Removes VIB packages from the host. WARNING: If your installation requires a reboot, you need to disable HA first.

update Update installed VIBs to newer VIB packages. No new VIBs will be installed, only updates. WARNING: If your installation

requires a reboot, you need to disable HA first.

Here’s a short list of the VIBs installed on my host:

# esxcli software vib list
Name                           Version                                Vendor           Acceptance Level  Install Date
-----------------------------  -------------------------------------  ---------------  ----------------  ------------
net-tg3                        3.134e.v55.1-1OEM.550.0.0.1331820      Broadcom         VMwareCertified   2015-01-29
scsi-bfa                       3.2.3.0-1OEM.550.0.0.1198610           Brocade          VMwareCertified   2015-01-29
ima-be2iscsi                   4.9.303.0-1OEM.550.0.0.1331820         Emulex           VMwareCertified   2015-01-29
lpfc                           10.0.725.203-1OEM.550.0.0.1331820      Emulex           VMwareCertified   2015-01-29
scsi-be2iscsi                  4.9.303.0-1OEM.550.0.0.1331820         Emulex           VMwareCertified   2015-01-29

# esxcli software vib list

Name Version Vendor Acceptance Level Install Date

----------------------------- ------------------------------------- --------------- ---------------- ------------

net-tg3 3.134e.v55.1-1OEM.550.0.0.1331820 Broadcom VMwareCertified 2015-01-29

scsi-bfa 3.2.3.0-1OEM.550.0.0.1198610 Brocade VMwareCertified 2015-01-29

ima-be2iscsi 4.9.303.0-1OEM.550.0.0.1331820 Emulex VMwareCertified 2015-01-29

lpfc 10.0.725.203-1OEM.550.0.0.1331820 Emulex VMwareCertified 2015-01-29

scsi-be2iscsi 4.9.303.0-1OEM.550.0.0.1331820 Emulex VMwareCertified 2015-01-29

Next you have Image Profiles. These are a collection of VIBs. In fact, since any installation of ESXi is a collection of VIBs, an image profile can be thought of as defining an ESXi image. For instance, all the VIBs on my currently installed ESXi server – including 3rd party VIBs – together can be thought of as an image profile. I can then deploy this image profile to other hosts to get the exact configuration on those hosts too.

One thing to keep in mind is that image profiles are not anything tangible. As in they are not files as such, they just define the VIBs that make up the profile.

Lastly you have Software Depots. These are your equivalent of Linux package repositories. They contain VIBs and Image Profiles and are accessible online via HTTP/ HTTPS/ FTP or even offline as a ZIP file (which is a neat thing IMHO). You would point to a software depot – online or offline – and specify an image profile you want, which then pulls in the VIBs you want.

Now back to esxcli. As we saw above this command can be used to list, update, remove etc VIBs. The cool thing though is that it can work with both VIB files and software depots (either online or a ZIP file containing a bunch of VIB files). Here’s the usage for the software vib install command which deals with installing VIBs:

Usage: esxcli software vib install [cmd options]

Description:
  install               Installs VIB packages from a URL or depot. VIBs may be installed, upgraded, or downgraded. WARNING:
                        If your installation requires a reboot, you need to disable HA first.

Cmd options:
  -d|--depot=[ <str> ... ]
                        Specifies full remote URLs of the depot index.xml or server file path pointing to an offline bundle
                        .zip file.
  --dry-run             Performs a dry-run only. Report the VIB-level operations that would be performed, but do not change
                        anything in the system.
  -f|--force            Bypasses checks for package dependencies, conflicts, obsolescence, and acceptance levels. Really not
                        recommended unless you know what you are doing. Use of this option will result in a warning being
                        displayed in the vSphere Client.
  --maintenance-mode    Pretends that maintenance mode is in effect. Otherwise, installation will stop for live installs
                        that require maintenance mode. This flag has no effect for reboot required remediations.
  --no-live-install     Forces an install to /altbootbank even if the VIBs are eligible for live installation or removal.
                        Will cause installation to be skipped on PXE-booted hosts.
  --no-sig-check        Bypasses acceptance level verification, including signing. Use of this option poses a large security
                        risk and will result in a SECURITY ALERT warning being displayed in the vSphere Client.
  --proxy=<str>         Specifies a proxy server to use for HTTP, FTP, and HTTPS connections. The format is proxy-url:port.
  -n|--vibname=[ <str> ... ]
                        Specifies VIBs from a depot, using one of the following forms: name, name:version, vendor:name, or
                        vendor:name:version.
  -v|--viburl=[ <str> ... ]
                        Specifies one or more URLs to VIB packages to install. http:, https:, ftp:, and file: are all
                        supported.

Usage: esxcli software vib install [cmd options]

Description:

install Installs VIB packages from a URL or depot. VIBs may be installed, upgraded, or downgraded. WARNING:

If your installation requires a reboot, you need to disable HA first.

Cmd options:

-d|--depot=[ <str> ... ]

Specifies full remote URLs of the depot index.xml or server file path pointing to an offline bundle

.zip file.

--dry-run Performs a dry-run only. Report the VIB-level operations that would be performed, but do not change

anything in the system.

-f|--force Bypasses checks for package dependencies, conflicts, obsolescence, and acceptance levels. Really not

recommended unless you know what you are doing. Use of this option will result in a warning being

displayed in the vSphere Client.

--maintenance-mode Pretends that maintenance mode is in effect. Otherwise, installation will stop for live installs

that require maintenance mode. This flag has no effect for reboot required remediations.

--no-live-install Forces an install to /altbootbank even if the VIBs are eligible for live installation or removal.

Will cause installation to be skipped on PXE-booted hosts.

--no-sig-check Bypasses acceptance level verification, including signing. Use of this option poses a large security

risk and will result in a SECURITY ALERT warning being displayed in the vSphere Client.

--proxy=<str> Specifies a proxy server to use for HTTP, FTP, and HTTPS connections. The format is proxy-url:port.

-n|--vibname=[ <str> ... ]

Specifies VIBs from a depot, using one of the following forms: name, name:version, vendor:name, or

vendor:name:version.

-v|--viburl=[ <str> ... ]

Specifies one or more URLs to VIB packages to install. http:, https:, ftp:, and file: are all

supported.

You have two options:

The -d switch can be used to specify a software depot (online or offline) along with the -n switch to specify the VIBs to be installed from this depot.
Or the -v switch can be used to directly specify VIBs to be installed.

The esxcli command can also work with image profiles.

Usage: esxcli software profile install [cmd options]

Description:
  install               Installs or applies an image profile from a depot to this host. This command completely replaces the
                        installed image with the image defined by the new image profile, and may result in the loss of
                        installed VIBs. The common vibs between host and image profile will be skipped. To preserve
                        installed VIBs, use profile update instead. WARNING: If your installation requires a reboot, you
                        need to disable HA first.

Cmd options:
  -d|--depot=[ <str> ... ]
                        Specifies full remote URLs of the depot index.xml or server file path pointing to an offline bundle
                        .zip file. (required)
  --dry-run             Performs a dry-run only. Report the VIB-level operations that would be performed, but do not change
                        anything in the system.
  -f|--force            Bypasses checks for package dependencies, conflicts, obsolescence, and acceptance levels. Really not
                        recommended unless you know what you are doing. Use of this option will result in a warning being
                        displayed in the vSphere Client.
  --maintenance-mode    Pretends that maintenance mode is in effect. Otherwise, installation will stop for live installs
                        that require maintenance mode. This flag has no effect for reboot required remediations.
  --no-live-install     Forces an install to /altbootbank even if the VIBs are eligible for live installation or removal.
                        Will cause installation to be skipped on PXE-booted hosts.
  --no-sig-check        Bypasses acceptance level verification, including signing. Use of this option poses a large security
                        risk and will result in a SECURITY ALERT warning being displayed in the vSphere Client.
  --ok-to-remove        Allows the removal of installed VIBs as part of applying the image profile. If not specified, esxcli
                        will error out if applying the image profile results in the removal of installed VIBs.
  -p|--profile=<str>    Specifies the name of the image profile to install. (required)
  --proxy=<str>         Specifies a proxy server to use for HTTP, FTP, and HTTPS connections. The format is proxy-url:port.

Usage: esxcli software profile install [cmd options]

Description:

install Installs or applies an image profile from a depot to this host. This command completely replaces the

installed image with the image defined by the new image profile, and may result in the loss of

installed VIBs. The common vibs between host and image profile will be skipped. To preserve

installed VIBs, use profile update instead. WARNING: If your installation requires a reboot, you

need to disable HA first.

Cmd options:

-d|--depot=[ <str> ... ]

Specifies full remote URLs of the depot index.xml or server file path pointing to an offline bundle

.zip file. (required)

--dry-run Performs a dry-run only. Report the VIB-level operations that would be performed, but do not change

anything in the system.

-f|--force Bypasses checks for package dependencies, conflicts, obsolescence, and acceptance levels. Really not

recommended unless you know what you are doing. Use of this option will result in a warning being

displayed in the vSphere Client.

--maintenance-mode Pretends that maintenance mode is in effect. Otherwise, installation will stop for live installs

that require maintenance mode. This flag has no effect for reboot required remediations.

--no-live-install Forces an install to /altbootbank even if the VIBs are eligible for live installation or removal.

Will cause installation to be skipped on PXE-booted hosts.

--no-sig-check Bypasses acceptance level verification, including signing. Use of this option poses a large security

risk and will result in a SECURITY ALERT warning being displayed in the vSphere Client.

--ok-to-remove Allows the removal of installed VIBs as part of applying the image profile. If not specified, esxcli

will error out if applying the image profile results in the removal of installed VIBs.

-p|--profile=<str> Specifies the name of the image profile to install. (required)

--proxy=<str> Specifies a proxy server to use for HTTP, FTP, and HTTPS connections. The format is proxy-url:port.

Here you have just one option (coz like I said you can’t download something called an image profile – you have to necessarily use a software depot). You use the -d switch to specify a depot (online or offline) and the -p switch to specify the image profile you are interested in.

Apart from installing VIBs & image profiles, the esxcli command can also remove and update these. When it comes to image profiles though, the command can also downgrade profiles via an --allow-downgrades switch. So that’s what we use to downgrade ESXi versions.

First find the ESXi version you want to downgrade to. In my case it was ESXi 5.5 Update 2. Go to My VMware (login with your account) and find the 5.5 Update 2 product. Download the offline bundle – which is a ZIP file (basically an offline software depot). In my case I got a file named “update-from-esxi5.5-5.5_update02-2068190.zip”. Now open this ZIP file and go to the “metadata.zip\profiles” folder in that. This gives you the list of profiles in this depot.

profiles

You can also get the names from a link such as this which gives more info on the release and the image profiles in it. (I came across it by Googling for “ESXi 5.5 Update 2 profile name”).

The profiles with an “s” in them only contain security fixes while the ones without an “s” contain both security and bug fixes. In my case the profile I am looking for is “ESXi-5.5.0-20140902001-standard”. I wasn’t sure if I need to go for the “no-tools” version or not, but figured I’ll stick with the “standard”.

Now, copy the ZIP file you downloaded to the host. Either upload it to the host directly, or to some shared storage, etc.

Then run a command similar to this:

esxcli software profile update --allow-downgrades -d /path/to/update-from-esxi5.5-5.5_update02.zip -p ESXi-5.5.0-20140902001-standard

1	esxcli software profile update --allow-downgrades -d /path/to/update-from-esxi5.5-5.5_update02.zip -p ESXi-5.5.0-20140902001-standard

That’s it! Following a host reboot you are now downgraded. Very straight-forward and easy.

ESXi host – cannot install HA – no space left on device

Posted: August 17th, 2015 | Tags: esxcli, esxi, esxi shell, high availability, ramdisk, visorfs, vmware | Category: Virtualization | §

These are less of notes and more of links and what I did when I encountered this issue. Just for my future self.

At work we had a host which was giving HA errors. The message was along the lines that vCenter could not contact HA. So I tried reconfiguring it for HA (right click the host and select “Reconfigure for vSphere HA”) upon which I got a new error: Cannot install the vCenter Server agent service. Cannot upload agent.

Initially I thought it must just be a permissions issue. But it wasn’t so.

To investigate further I tried logging on to the server. I couldn’t enable SSH and ESXi Shell from the Configuration tab – it gave me an error. So I iLO’d into the server DCUI and enabled SSH and ESXi Shell. SSH still refused to let me in, and when I’d press Alt+F1 on the console to get the login prompt it was filled with messages like these: /bin/sh cant fork. Initially I thought it might be to do with HP AMS memory leak (see this and this) but it wasn’t.

I pressed Alt+F12 to see the on-screen logs. It was filled with messages like these:

Blimey!

There was nothing more I could do here basically. Couldn’t login to the server at all, heck I couldn’t even Shutdown/ Restart it gracefully via F12 in DCUI (nothing would happen). So I cold booted it and that got it working.

It’s been about 2 hours since I did that and the server seems stable so maybe it was a one off-thing. I looked at more logs though and here’s what I found.

/var/log/syslog.log

(Contains: Management service initialization, watchdogs, scheduled tasks and DCUI use)

2015-08-14T08:37:39Z sfcb-CIMXML-Processor[22385291]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:40Z sfcb-CIMXML-Processor[22385292]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:40Z sfcb-CIMXML-Processor[22385293]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:40Z sfcb-CIMXML-Processor[22385294]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385295]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385296]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385297]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385298]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385299]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'
2015-08-14T08:37:42Z sfcb-CIMXML-Processor[22352532]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:39Z sfcb-CIMXML-Processor[22385291]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:40Z sfcb-CIMXML-Processor[22385292]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:40Z sfcb-CIMXML-Processor[22385293]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:40Z sfcb-CIMXML-Processor[22385294]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385295]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385296]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385297]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385298]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:41Z sfcb-CIMXML-Processor[22385299]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

2015-08-14T08:37:42Z sfcb-CIMXML-Processor[22352532]: TicketCache --- Can't open '/var/run/sfcb/52cbb0d0-da3a-9ad5-322d-361a1caafbcc', Error: 'No space left on device'

/var/log/vmkwarning.log

(Contains: A summary of Warning and Alert log messages excerpted from the VMkernel logs)

2015-08-13T19:56:19.608Z cpu2:22382164)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/527fb83b-7c0b-4fe2-0152-d81fb0bac853 for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-13T20:00:14.737Z cpu4:34191 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-52f258cf-a87b-e1 for process hostd-worker because the inode table of its ramdisk (root) is full.
2015-08-13T20:04:46.110Z cpu30:34194 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-52c87856-17ee-61 for process hostd-worker because the inode table of its ramdisk (root) is full.
2015-08-13T20:09:17.481Z cpu3:36506 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-529ddabc-6196-dd for process hostd-worker because the inode table of its ramdisk (root) is full.
2015-08-13T20:13:48.849Z cpu11:7960868 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-5278454b-65e6-1d for process hostd-worker because the inode table of its ramdisk (root) is full.
2015-08-13T20:15:53.301Z cpu6:21329945)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-7f09012d-0b29-44 for process cimslp because the inode table of its ramdisk (root) is full.
2015-08-13T20:16:48.853Z cpu12:35008 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-5257e7ba-7c96-d0 for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-13T19:56:19.608Z cpu2:22382164)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/527fb83b-7c0b-4fe2-0152-d81fb0bac853 for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-13T20:00:14.737Z cpu4:34191 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-52f258cf-a87b-e1 for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-13T20:04:46.110Z cpu30:34194 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-52c87856-17ee-61 for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-13T20:09:17.481Z cpu3:36506 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-529ddabc-6196-dd for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-13T20:13:48.849Z cpu11:7960868 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-5278454b-65e6-1d for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-13T20:15:53.301Z cpu6:21329945)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-7f09012d-0b29-44 for process cimslp because the inode table of its ramdisk (root) is full.

2015-08-13T20:16:48.853Z cpu12:35008 opID=ee934b0f)WARNING: VisorFSObj: 1940: Cannot create file /var/run/vmware/tickets/vmtck-5257e7ba-7c96-d0 for process hostd-worker because the inode table of its ramdisk (root) is full.

/var/log/vob.log

(Contains: VMkernel Observation events)

2015-08-17T00:15:19.220Z: [VisorfsCorrelator] 17133398447519us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-52b5db61-d61e-8d for process hostd-worker because the inode table of its ramdisk (root) is full.
2015-08-17T00:15:19.220Z: [VisorfsCorrelator] 17133319127883us: [esx.problem.visorfs.ramdisk.inodetable.full] The file table of the ramdisk 'root' is full.  As a result, the file /var/run/vmware/tickets/vmtck-52b5db61-d61e-8d could not be created by the application 'hostd-worker'.
2015-08-17T00:21:20.587Z: [VisorfsCorrelator] 17133759815799us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-52ac40ae-4240-e3 for process hostd-worker because the inode table of its ramdisk (root) is full.
2015-08-17T00:21:20.587Z: [VisorfsCorrelator] 17133680494786us: [esx.problem.visorfs.ramdisk.inodetable.full] The file table of the ramdisk 'root' is full.  As a result, the file /var/run/vmware/tickets/vmtck-52ac40ae-4240-e3 could not be created by the application 'hostd-worker'.
2015-08-17T00:25:51.966Z: [VisorfsCorrelator] 17134031195582us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-520e1b5c-35f2-21 for process hostd-worker because the inode table of its ramdisk (root) is full.
2015-08-17T00:25:51.966Z: [VisorfsCorrelator] 17133951873623us: [esx.problem.visorfs.ramdisk.inodetable.full] The file table of the ramdisk 'root' is full.  As a result, the file /var/run/vmware/tickets/vmtck-520e1b5c-35f2-21 could not be created by the application 'hostd-worker'.
2015-08-17T00:30:23.342Z: [VisorfsCorrelator] 17134302572394us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-52b93f74-9429-59 for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-17T00:15:19.220Z: [VisorfsCorrelator] 17133398447519us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-52b5db61-d61e-8d for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-17T00:15:19.220Z: [VisorfsCorrelator] 17133319127883us: [esx.problem.visorfs.ramdisk.inodetable.full] The file table of the ramdisk 'root' is full. As a result, the file /var/run/vmware/tickets/vmtck-52b5db61-d61e-8d could not be created by the application 'hostd-worker'.

2015-08-17T00:21:20.587Z: [VisorfsCorrelator] 17133759815799us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-52ac40ae-4240-e3 for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-17T00:21:20.587Z: [VisorfsCorrelator] 17133680494786us: [esx.problem.visorfs.ramdisk.inodetable.full] The file table of the ramdisk 'root' is full. As a result, the file /var/run/vmware/tickets/vmtck-52ac40ae-4240-e3 could not be created by the application 'hostd-worker'.

2015-08-17T00:25:51.966Z: [VisorfsCorrelator] 17134031195582us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-520e1b5c-35f2-21 for process hostd-worker because the inode table of its ramdisk (root) is full.

2015-08-17T00:25:51.966Z: [VisorfsCorrelator] 17133951873623us: [esx.problem.visorfs.ramdisk.inodetable.full] The file table of the ramdisk 'root' is full. As a result, the file /var/run/vmware/tickets/vmtck-520e1b5c-35f2-21 could not be created by the application 'hostd-worker'.

2015-08-17T00:30:23.342Z: [VisorfsCorrelator] 17134302572394us: [vob.visorfs.ramdisk.inodetable.full] Cannot create file /var/run/vmware/tickets/vmtck-52b93f74-9429-59 for process hostd-worker because the inode table of its ramdisk (root) is full.

/var/log/vmkernel.log

(Contains: Core VMkernel logs, including device discovery, storage and networking device and driver events, and virtual machine startup)

2015-08-17T01:22:09.441Z cpu30:22401956)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:09.740Z cpu27:22401957)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:09.915Z cpu11:7960868)World: 14299: VC opID hostd-b90c maps to vmkernel opID 576afc9e
2015-08-17T01:22:10.060Z cpu13:22401959)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:10.367Z cpu9:22401960)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:10.629Z cpu26:22401962)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:10.869Z cpu22:22401963)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:11.113Z cpu25:22401966)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:11.359Z cpu17:22401968)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.
2015-08-17T01:22:11.668Z cpu12:22401970)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:09.441Z cpu30:22401956)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:09.740Z cpu27:22401957)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:09.915Z cpu11:7960868)World: 14299: VC opID hostd-b90c maps to vmkernel opID 576afc9e

2015-08-17T01:22:10.060Z cpu13:22401959)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:10.367Z cpu9:22401960)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:10.629Z cpu26:22401962)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:10.869Z cpu22:22401963)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:11.113Z cpu25:22401966)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:11.359Z cpu17:22401968)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

2015-08-17T01:22:11.668Z cpu12:22401970)WARNING: VisorFSObj: 1940: Cannot create file /var/run/sfcb/5277bce4-a843-d718-aacc-a7bf06d5768a for process sfcb-CIMXML-Pro because the inode table of its ramdisk (root) is full.

/var/log/hostd.log

(Contains: Host management service logs, including virtual machine and host Task and Events, communication with the vSphere Client and vCenter Server vpxa agent, and SDK connections.)

2015-08-15T09:11:54.083Z [2B781B70 info 'Vimsvc.ha-eventmgr'] Event 9898 : The file table of the ramdisk 'root' is full.  As a result, the file /var/run/vmware/tickets/vmtck-52533095-569d-5c could not be created by the application 'hostd-worker'.
2015-08-15T09:11:54.087Z [FF95EB70 info 'Hostsvc' opID=hostd-6801] VsanSystemVmkProvider : GetRuntimeInfo: Start
2015-08-15T09:11:54.087Z [FF95EB70 info 'Hostsvc' opID=hostd-6801] VsanSystemVmkProvider : GetRuntimeInfo: Complete, runtime info: (vim.vsan.host.VsanRuntimeInfo) {
-->    dynamicType = <unset>,
-->    accessGenNo = 0,
-->

2015-08-15T09:11:54.083Z [2B781B70 info 'Vimsvc.ha-eventmgr'] Event 9898 : The file table of the ramdisk 'root' is full. As a result, the file /var/run/vmware/tickets/vmtck-52533095-569d-5c could not be created by the application 'hostd-worker'.

2015-08-15T09:11:54.087Z [FF95EB70 info 'Hostsvc' opID=hostd-6801] VsanSystemVmkProvider : GetRuntimeInfo: Start

2015-08-15T09:11:54.087Z [FF95EB70 info 'Hostsvc' opID=hostd-6801] VsanSystemVmkProvider : GetRuntimeInfo: Complete, runtime info: (vim.vsan.host.VsanRuntimeInfo) {

--> dynamicType = <unset>,

--> accessGenNo = 0,

-->

From these logs one thing was clear. The ESXi RAMdisk hosting the root filesystem had run out of inodes. Possibly caused by the SFCB service. Because of this the root filesystem had run out of space and everything was failing. Great!

In Linux I am used to the df command to check filesystem usage. But in ESXi df only seems to be give info on the mounted filesystems whereas vdf gives the local filesystems (like RAMdisks and Tardisks (whatever that is)).

~ # vdf -h
Tardisk                  Space      Used
sb.v00                    148M      148M
s.v00                     295M      295M
misc_cni.v00               24K       21K
net_bnx2.v00              304K      301K
net_bnx2.v01                1M        1M
net_cnic.v00              140K      137K
...
imgdb.tgz                 400K      400K
state.tgz                  28K       27K
-----
Ramdisk                   Size      Used Available Use% Mounted on
root                       32M        1M       30M   5% --
etc                        28M      260K       27M   0% --
tmp                       192M      532K      191M   0% --
hostdstats               1053M        8M     1044M   0% --
snmptraps                   1M        0B        1M   0% --

~ # vdf -h

Tardisk Space Used

sb.v00 148M 148M

s.v00 295M 295M

misc_cni.v00 24K 21K

net_bnx2.v00 304K 301K

net_bnx2.v01 1M 1M

net_cnic.v00 140K 137K

...

imgdb.tgz 400K 400K

state.tgz 28K 27K

-----

Ramdisk Size Used Available Use% Mounted on

root 32M 1M 30M 5% --

etc 28M 260K 27M 0% --

tmp 192M 532K 191M 0% --

hostdstats 1053M 8M 1044M 0% --

snmptraps 1M 0B 1M 0% --

Above output is after a reboot and all seems fine. To check the inode usage use the stat command.

~ # stat -f /
  File: "/"
    ID: 100000000 Namelen: 127     Type: visorfs
Block size: 4096
Blocks: Total: 492406     Free: 331548     Available: 331548
Inodes: Total: 524288     Free: 519997

~ # stat -f /

File: "/"

ID: 100000000 Namelen: 127 Type: visorfs

Block size: 4096

Blocks: Total: 492406 Free: 331548 Available: 331548

Inodes: Total: 524288 Free: 519997

Or use exscli. It gives you the free space as well as the inode count!

~ # esxcli system visorfs ramdisk list
Ramdisk Name  System  Include in Coredumps  Reserved   Maximum      Used      Peak Used  Free   Reserved Free  Maximum Inodes  Allocated Inodes  Used Inodes  Mount Point
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
root          true    true                  32768 KiB    32768 KiB  1816 KiB   1820 KiB   94 %           94 %            8192              4096         3763  /
etc           true    true                  28672 KiB    28672 KiB   264 KiB    308 KiB   99 %           99 %            4096              1024          505  /etc
tmp           false   false                  2048 KiB   196608 KiB   532 KiB    868 KiB   99 %           74 %            8192               256           19  /tmp
hostdstats    false   false                     0 KiB  1078272 KiB  8552 KiB   8552 KiB   99 %            0 %            8192                32            5  /var/lib/vmware/hostd/stats
snmptraps     false   false                     0 KiB     1024 KiB     0 KiB      0 KiB  100 %            0 %            8192                32            1  /var/spool/snmp

~ # esxcli system visorfs ramdisk list

Ramdisk Name System Include in Coredumps Reserved Maximum Used Peak Used Free Reserved Free Maximum Inodes Allocated Inodes Used Inodes Mount Point

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------

root true true 32768 KiB 32768 KiB 1816 KiB 1820 KiB 94 % 94 % 8192 4096 3763 /

etc true true 28672 KiB 28672 KiB 264 KiB 308 KiB 99 % 99 % 4096 1024 505 /etc

tmp false false 2048 KiB 196608 KiB 532 KiB 868 KiB 99 % 74 % 8192 256 19 /tmp

hostdstats false false 0 KiB 1078272 KiB 8552 KiB 8552 KiB 99 % 0 % 8192 32 5 /var/lib/vmware/hostd/stats

snmptraps false false 0 KiB 1024 KiB 0 KiB 0 KiB 100 % 0 % 8192 32 1 /var/spool/snmp

Note to self: Make a habit of using the esxcli command as that seems to be the VMware preferred way of doing things. Plus it’s one command with various namespaces you can use for networking and other info.

In my case things look to be fine now.

KB 2037798 talks about this problem. Apparently it is fixed via a patch released in 2013, and as far as I can tell we are properly patched so we shouldn’t have been hit by this issue. If it happens again though the same KB article talks about creating a separate RAMdisk for SFCB so even if it eats up all the inodes your root file system isn’t affected. This involves creating a new RAMdisk at boot time by modifying rc.local (nice!). The esxcli command can be used to create a new ramdisk and mount it at the mount point required by SFCB:

esxcli system visorfs ramdisk add --name sfcbtickets --min-size 0 --max-size 1024 --permissions 0755 --target /var/run/sfcb

1	esxcli system visorfs ramdisk add --name sfcbtickets --min-size 0 --max-size 1024 --permissions 0755 --target /var/run/sfcb

Turns out such an issue can also occur because of SNMP. Or if you have an HP Gen8 blade server then coz of the hpHelper.log file, which is fixed via a patch from HP (this server was a Gen8 blade but it didn’t have this log file). KB 2040707 too talks about this. Didn’t help much in my case as that didn’t seem to be my issue.

Two useful links for future reference are:

KB 1003564: Investigating disk space on an ESX or ESXi host – very informative!
KB 2001550: RAM disk is full – nothing much but worth a read.

That’s all for now.

p.s. I keep talking about SFCB above but have no idea what it is. Turns out it is the CIM server for ESXi. Found this blog post on it.

Number of IPv4 routes did not match

Posted: July 3rd, 2015 | Tags: esxcfg, esxcli, esxi, get-esxcli, powercli, vmkernel, vmkping, vmware | Category: Virtualization | §

Was creating / migrating some ESXi hosts during the week and came across the above error “Number of IPv4 routes did not match” when checking for host profile compliance of one of the hosts. All network settings of this host appeared to be same as the rest so I was stumped as to what could be wrong. Via a VMware KB article I came across the esxcfg-route command that helped identify the problem. To run this command SSH into the host:

~ # esxcfg-route
VMkernel default gateway is 10.50.0.252

1 2	~ # esxcfg-route VMkernel default gateway is 10.50.0.252

By default the command only outputs the default gateway but you can pass it the -l switch to list all routes:

~ # esxcfg-route  -l
VMkernel Routes:
Network          Netmask          Gateway          Interface
10.50.0.0        255.255.255.0    Local Subnet     vmk0
1.1.1.0          255.255.255.0    Local Subnet     vmk2
default          0.0.0.0          10.50.0.252      vmk1

~ # esxcfg-route -l

VMkernel Routes:

Network Netmask Gateway Interface

10.50.0.0 255.255.255.0 Local Subnet vmk0

1.1.1.0 255.255.255.0 Local Subnet vmk2

default 0.0.0.0 10.50.0.252 vmk1

In my case the above output was from one of the hosts, while the following was from the non-compliant host:

~ # esxcfg-route -l
VMkernel Routes:
Network          Netmask          Gateway          Interface
10.50.0.0        255.255.255.0    Local Subnet     vmk0
10.50.0.0        255.255.0.0      Local Subnet     vmk2
default          0.0.0.0          10.50.0.252      vmk1

~ # esxcfg-route -l

VMkernel Routes:

Network Netmask Gateway Interface

10.50.0.0 255.255.255.0 Local Subnet vmk0

10.50.0.0 255.255.0.0 Local Subnet vmk2

default 0.0.0.0 10.50.0.252 vmk1

Notice the vmk2 interface has the wrong network. Not sure how that happened. Oddly the GUI didn’t show this incorrect network but obviously something was corrupt somewhere.

To fix that I thought I’ll remove the vmk2 interface and re-add it. Big mistake! Possibly because its network was same as that of the management network (10.50.0.0/24) removing this interface caused the host to lose connectivity from vCenter. I could ping it but couldn’t connect to it via SSH, vSphere Client, or vCenter. Finally I had to reset the network via the DCUI – it’s under “Network Restore Options”. I tried “Restore vDS” first, didn’t help, so did a “Restore Standard Switch”. This is a very useful – it creates a new standard switch and moves the Management Network onto that so you get connectivity to the host. This way I was able to reconnect to the host, but now I stumbled upon a new problem.

The host didn’t have the vmk2 interface any more but when I tried to recreate it I got an error that the interface already exists. But no, it does not – the GUI has no trace of it! Some forum posts suggested restarting the vCenter service as that clears its cache and puts it in sync with the hosts but that didn’t help either. Then I came across this post which showed me that it is possible for the host to still have the VMkernel port but vCenter to not know of it. For this the esxcli command is your friend. To list all VMkernel ports on a host do the following:

~ # esxcli network ip interface list
vmk2
   Name: vmk2
   MAC Address: 00:50:52:24:2d:e3
   Enabled: true
   Portset: DvsPortset-1
   Portgroup: N/A
   Netstack Instance: defaultTcpipStack
   VDS Name: dvSwitch1 (ISCSI)
   VDS UUID: 92 c7 85 40 3e 7f 5a 5a-fd 4e e5 9d 2f 20 8d d2
   VDS Port: 132
   VDS Connection: 39130298
   MTU: 1500
   TSO MSS: 65535
   Port ID: 100663300

...

~ # esxcli network ip interface list

vmk2

Name: vmk2

MAC Address: 00:50:52:24:2d:e3

Enabled: true

Portset: DvsPortset-1

Portgroup: N/A

Netstack Instance: defaultTcpipStack

VDS Name: dvSwitch1 (ISCSI)

VDS UUID: 92 c7 85 40 3e 7f 5a 5a-fd 4e e5 9d 2f 20 8d d2

VDS Port: 132

VDS Connection: 39130298

MTU: 1500

TSO MSS: 65535

Port ID: 100663300

...

After that, removing the VMkernel interface can be done by a variant of same command:

~ # esxcli network ip interface remove --interface-name vmk2

1	~ # esxcli network ip interface remove --interface-name vmk2

Now I could add the re-add the interface via vSphere and get the hosts into compliance.

Before I conclude this post though, a few notes on the commands above.

If you have PowerCLI installed you can run all the esxcli commands via the Get-EsxCli cmdlet. For example:

PowerCLI C:\> Get-EsxCli -VMHost ESX01.rakhesh.local

===========================
EsxCli: esx01.rakhesh.local

   Elements:
   ---------
   device
   esxcli
   fcoe
   graphics
   hardware
   iscsi
   network
   sched
   software
   storage
   system
   vm
   vsan


# notice it returns the esxcli names spaces
# if I try invoking one of them I get the function definition instead 
PowerCLI C:\> (Get-EsxCli -VMHost ESX01.rakhesh.local).network.ip.interface.list


TypeNameOfValue     : VMware.VimAutomation.ViCore.Util10Ps.EsxCliExtensionMethod
OverloadDefinitions : {vim.EsxCLI.network.ip.interface.list.NetworkInterface[] list(string netstack)}
MemberType          : CodeMethod
Value               : vim.EsxCLI.network.ip.interface.list.NetworkInterface[] list(string netstack)
Name                : list
IsInstance          : True


# so I invoke it as a function with a () after the function name
PowerCLI C:\> (Get-EsxCli -VMHost ESX01.rakhesh.local).network.ip.interface.list()


Enabled          : true
MACAddress       : 00:50:52:32:3f:23
MTU              : 1500
Name             : vmk2
NetstackInstance : defaultTcpipStack
PortID           : 100663300
Portgroup        : N/A
Portset          : DvsPortset-1
TSOMSS           : 65535
VDSConnection    : 39130298
VDSName          : dvSwitch1 (ISCSI)
VDSPort          : 132
VDSUUID          : 92 c7 15 40 3f 7e 3a 5b-eb 1e d1 1d 2f 30 3d d2

...

PowerCLI C:\> Get-EsxCli -VMHost ESX01.rakhesh.local

===========================

EsxCli: esx01.rakhesh.local

Elements:

---------

device

esxcli

fcoe

graphics

hardware

iscsi

network

sched

software

storage

system

vsan

# notice it returns the esxcli names spaces

# if I try invoking one of them I get the function definition instead

PowerCLI C:\> (Get-EsxCli -VMHost ESX01.rakhesh.local).network.ip.interface.list

TypeNameOfValue : VMware.VimAutomation.ViCore.Util10Ps.EsxCliExtensionMethod

OverloadDefinitions : {vim.EsxCLI.network.ip.interface.list.NetworkInterface[] list(string netstack)}

MemberType : CodeMethod

Value : vim.EsxCLI.network.ip.interface.list.NetworkInterface[] list(string netstack)

Name : list

IsInstance : True

# so I invoke it as a function with a () after the function name

PowerCLI C:\> (Get-EsxCli -VMHost ESX01.rakhesh.local).network.ip.interface.list()

Enabled : true

MACAddress : 00:50:52:32:3f:23

MTU : 1500

Name : vmk2

NetstackInstance : defaultTcpipStack

PortID : 100663300

Portgroup : N/A

Portset : DvsPortset-1

TSOMSS : 65535

VDSConnection : 39130298

VDSName : dvSwitch1 (ISCSI)

VDSPort : 132

VDSUUID : 92 c7 15 40 3f 7e 3a 5b-eb 1e d1 1d 2f 30 3d d2

...

If I wanted to remove the interface via PowerCLI the command would be slightly different:

PowerCLI C:\> (Get-EsxCli -VMHost ESX03.rakhesh.local).network.ip.interface.remove


TypeNameOfValue     : VMware.VimAutomation.ViCore.Util10Ps.EsxCliExtensionMethod
OverloadDefinitions : {boolean remove(string dvportid, string dvsname, string interfacename, string netstack, string portgroupname)}
MemberType          : CodeMethod
Value               : boolean remove(string dvportid, string dvsname, string interfacename, string netstack, string portgroupname)
Name                : remove
IsInstance          : True


# notice the function requires arguments. specifically, the position matters. I am targeting a standard vSwitch so must leave the first two arguments $null
PowerCLI C:\> (Get-EsxCli -VMHost ESX01.rakhesh.local).network.ip.interface.remove($null,$null,"vmk2")

PowerCLI C:\> (Get-EsxCli -VMHost ESX03.rakhesh.local).network.ip.interface.remove

TypeNameOfValue : VMware.VimAutomation.ViCore.Util10Ps.EsxCliExtensionMethod

OverloadDefinitions : {boolean remove(string dvportid, string dvsname, string interfacename, string netstack, string portgroupname)}

MemberType : CodeMethod

Value : boolean remove(string dvportid, string dvsname, string interfacename, string netstack, string portgroupname)

Name : remove

IsInstance : True

# notice the function requires arguments. specifically, the position matters. I am targeting a standard vSwitch so must leave the first two arguments $null

PowerCLI C:\> (Get-EsxCli -VMHost ESX01.rakhesh.local).network.ip.interface.remove($null,$null,"vmk2")

I would have written more on the esxcli command itself but this excellent blog post covers it all. It’s an all powerful command that can be used to manage many aspects of the ESXi host, even set it in maintenance mode!

# get current status
~ # esxcli system maintenanceMode get
Disabled

# set option help screen
~ # esxcli system maintenanceMode set
Error: Missing required parameter -e|--enable

Usage: esxcli system maintenanceMode set [cmd options]

Description:
  set                   Enable or disable the maintenance mode of the system.

Cmd options:
  -e|--enable           enable maintenance mode (required)
  -t|--timeout=<long>   Time to perform operation in seconds (default 60 seconds)

# enter maintenance mode
~ # esxcli system maintenanceMode set --enable=true --timeout=5

# exit maintenance mode
~ # esxcli system maintenanceMode set --enable=false --timeout=5

# get current status

~ # esxcli system maintenanceMode get

Disabled

# set option help screen

~ # esxcli system maintenanceMode set

Error: Missing required parameter -e|--enable

Usage: esxcli system maintenanceMode set [cmd options]

Description:

set Enable or disable the maintenance mode of the system.

Cmd options:

-e|--enable enable maintenance mode (required)

-t|--timeout=<long> Time to perform operation in seconds (default 60 seconds)

# enter maintenance mode

~ # esxcli system maintenanceMode set --enable=true --timeout=5

# exit maintenance mode

~ # esxcli system maintenanceMode set --enable=false --timeout=5

Heck you can even use esxcli to upgrade from one ESXi version to another. It is also possible to run the esxcli command from a remote computer (Windows or Linux) by installing the vSphere CLI tools on that computer. Additionally, there’s also the vSphere Management Assistant (VMA) which is a virtual appliance that offers command line tools.

The esxcli is also useful if you want to kill a VM. For instance the following lists all running VMs on a host:

~ # esxcli vm process list
UBUNTU
   World ID: 155802
   Process ID: 0
   VMX Cartel ID: 155801
   UUID: 42 15 e9 7e b2 72 df 12-82 e2 b3 80 07 b5 fc d1
   Display Name: UBUNTU
   Config File: /vmfs/volumes/557781ea-fae0924c-8041-000c29d09802/UBUNTU/UBUNTU.vmx

~ # esxcli vm process list

UBUNTU

World ID: 155802

Process ID: 0

VMX Cartel ID: 155801

UUID: 42 15 e9 7e b2 72 df 12-82 e2 b3 80 07 b5 fc d1

Display Name: UBUNTU

Config File: /vmfs/volumes/557781ea-fae0924c-8041-000c29d09802/UBUNTU/UBUNTU.vmx

If that VM were stuck for some reason and cannot be stopped or restarted via vSphere it’s very useful to know the esxcli command can be used to kill the VM (has happened a couple of times to me in the past):

~ # esxcli vm process kill -t force -w 155802

1	~ # esxcli vm process kill -t force -w 155802

Regarding the type of killing you can do:

There are three types of VM kills that can be attempted: [soft, hard, force]. Users should always attempt ‘soft’ kills first, which will give the VMX process a chance to shutdown cleanly (like kill or kill -SIGTERM). If that does not work move to ‘hard’ kills which will shutdown the process immediately (like kill -9 or kill -SIGKILL). ‘force’ should be used as a last resort attempt to kill the VM. If all three fail then a reboot is required. (required)

Another command line option is vim-cmd which I stumbled upon from one of the links above. I haven’t used it much so as a reference to myself here’s a blog post explaining it in detail.

Lastly there’s also a bunch of esxcfg-* commands, one of whom we came across above.

~ # esxcfg-
esxcfg-advcfg    esxcfg-hwiscsi   esxcfg-ipsec     esxcfg-nas       esxcfg-resgrp    esxcfg-swiscsi   esxcfg-vswitch
esxcfg-dumppart  esxcfg-info      esxcfg-module    esxcfg-nics      esxcfg-route     esxcfg-vmknic
esxcfg-fcoe      esxcfg-init      esxcfg-mpath     esxcfg-rescan    esxcfg-scsidevs  esxcfg-volume

~ # esxcfg-

esxcfg-advcfg esxcfg-hwiscsi esxcfg-ipsec esxcfg-nas esxcfg-resgrp esxcfg-swiscsi esxcfg-vswitch

esxcfg-dumppart esxcfg-info esxcfg-module esxcfg-nics esxcfg-route esxcfg-vmknic

esxcfg-fcoe esxcfg-init esxcfg-mpath esxcfg-rescan esxcfg-scsidevs esxcfg-volume

I haven’t used these much. They seem to be present for compatibility reasons with ESXi 3.x and prior. Back then you had commands with a vicfg- prefix, now you have the same but with a esxcfg- prefix. For instance, esxcfg-vmknic is now replaced with esxcli network interface as we saw above.

That’s all for now!

Update: Thought I’d use this post to keep track of other useful commands.

To get IPv4 addresses details:

~ # esxcli network ip interface ipv4 get
Name  IPv4 Address     IPv4 Netmask   IPv4 Broadcast   Address Type  DHCP DNS
----  ---------------  -------------  ---------------  ------------  --------
vmk1  10.50.0.207      255.255.255.0  10.50.0.255      DHCP             false
vmk0  10.50.0.32       255.255.255.0  10.50.0.255      STATIC           false
vmk3  10.50.0.210      255.255.255.0  10.50.0.255      DHCP             false
vmk2  169.254.162.132  255.255.0.0    169.254.255.255  DHCP             false

~ # esxcli network ip interface ipv4 get

Name IPv4 Address IPv4 Netmask IPv4 Broadcast Address Type DHCP DNS

---- --------------- ------------- --------------- ------------ --------

vmk1 10.50.0.207 255.255.255.0 10.50.0.255 DHCP false

vmk0 10.50.0.32 255.255.255.0 10.50.0.255 STATIC false

vmk3 10.50.0.210 255.255.255.0 10.50.0.255 DHCP false

vmk2 169.254.162.132 255.255.0.0 169.254.255.255 DHCP false

Replace with ipv6 if that’s what you want.

To set an IPv4 address:

~ # esxcli network ip interface ipv4 set -i vmk2 -I 1.1.1.2 -N 255.255.255.0 -t static

1	~ # esxcli network ip interface ipv4 set -i vmk2 -I 1.1.1.2 -N 255.255.255.0 -t static

To ping an address from the host:

~ # vmkping 1.1.1.1
PING 1.1.1.1 (1.1.1.1): 56 data bytes
64 bytes from 1.1.1.1: icmp_seq=0 ttl=64 time=3.099 ms
64 bytes from 1.1.1.1: icmp_seq=1 ttl=64 time=0.629 ms

--- 1.1.1.1 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 0.629/1.864/3.099 ms

~ # vmkping 1.1.1.1

PING 1.1.1.1 (1.1.1.1): 56 data bytes

64 bytes from 1.1.1.1: icmp_seq=0 ttl=64 time=3.099 ms

64 bytes from 1.1.1.1: icmp_seq=1 ttl=64 time=0.629 ms

--- 1.1.1.1 ping statistics ---

2 packets transmitted, 2 packets received, 0% packet loss

round-trip min/avg/max = 0.629/1.864/3.099 ms

Change keyboard layout:

Get current keyboard layout:

~ # esxcli system settings keyboard layout get
United Kingdom

1 2	~ # esxcli system settings keyboard layout get United Kingdom

List available layouts:

~ # esxcli system settings keyboard layout list
Layout
---------------
Belgian
Brazilian
Croatian
...

~ # esxcli system settings keyboard layout list

Layout

---------------

Belgian

Brazilian

Croatian

...

Set a new layout:

~ # esxcli system settings keyboard layout set -l "US Default"

1	~ # esxcli system settings keyboard layout set -l "US Default"

Remotely enable SSH

The esxcli commands are cool but you need to enable SSH each time you want to connect to the host and run these (unless you install the CLI tools on your machine). If you have PowerCLI though you can enable SSH remotely.

To list the services:

PowerCLI C:\> Get-VMHostService -VMHost "ESX03.rakhesh.local"

Key                  Label                          Policy     Running  Required
---                  -----                          ------     -------  --------
DCUI                 Direct Console UI              on         True     False
TSM                  ESXi Shell                     off        False    False
TSM-SSH              SSH                            off        False    False
lbtd                 lbtd                           on         True     False
lsassd               Local Security Authenticati... off        False    False
lwiod                I/O Redirector (Active Dire... off        False    False
netlogond            Network Login Server (Activ... off        False    False
ntpd                 NTP Daemon                     off        False    False
sfcbd-watchdog       CIM Server                     on         True     False
snmpd                snmpd                          on         False    False
vprobed              vprobed                        off        False    False
vpxa                 vpxa                           on         True     False
xorg                 xorg                           on         False    False

PowerCLI C:\> Get-VMHostService -VMHost "ESX03.rakhesh.local"

Key Label Policy Running Required

--- ----- ------ ------- --------

DCUI Direct Console UI on True False

TSM ESXi Shell off False False

TSM-SSH SSH off False False

lbtd lbtd on True False

lsassd Local Security Authenticati... off False False

lwiod I/O Redirector (Active Dire... off False False

netlogond Network Login Server (Activ... off False False

ntpd NTP Daemon off False False

sfcbd-watchdog CIM Server on True False

snmpd snmpd on False False

vprobed vprobed off False False

vpxa vpxa on True False

xorg xorg on False False

To enable SSH and the ESXi shell:

PowerCLI C:\> $SSHsvc = Get-VMHostService -VMHost "ESX03.rakhesh.local" | ?{ $_.Label -eq "SSH" }
PowerCLI C:\> $ESXIsvc = Get-VMHostService -VMHost "ESX03.rakhesh.local" | ?{ $_.Label -eq "ESXi Shell" }
PowerCLI C:\> Start-VMHostService -HostService $SSHsvc

Key                  Label                          Policy     Running  Required
---                  -----                          ------     -------  --------
TSM-SSH              SSH                            off        True     False


PowerCLI C:\> Start-VMHostService -HostService $ESXIsvc

Key                  Label                          Policy     Running  Required
---                  -----                          ------     -------  --------
TSM                  ESXi Shell                     off        True     False

PowerCLI C:\> $SSHsvc = Get-VMHostService -VMHost "ESX03.rakhesh.local" | ?{ $_.Label -eq "SSH" }

PowerCLI C:\> $ESXIsvc = Get-VMHostService -VMHost "ESX03.rakhesh.local" | ?{ $_.Label -eq "ESXi Shell" }

PowerCLI C:\> Start-VMHostService -HostService $SSHsvc

Key Label Policy Running Required

--- ----- ------ ------- --------

TSM-SSH SSH off True False

PowerCLI C:\> Start-VMHostService -HostService $ESXIsvc

Key Label Policy Running Required

--- ----- ------ ------- --------

TSM ESXi Shell off True False

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FC with Synergy 3820C 10/20Gb CNA and VMware ESXi

[Aside] ESXCLI storage commands

Script to run esxcli unmap on all datastores attached to an ESXi host

Migrating VMkernel port from Standard to Distributed Switch fails

Find the profiles in an offline ESXi update zip file

Reboot a bunch of ESXi hosts one after the other

Downgrading ESXi Host

ESXi host – cannot install HA – no space left on device

/var/log/syslog.log

/var/log/vmkwarning.log

/var/log/vob.log

/var/log/vmkernel.log

/var/log/hostd.log

Number of IPv4 routes did not match

To get IPv4 addresses details:

To set an IPv4 address:

To ping an address from the host:

Change keyboard layout:

Remotely enable SSH