Set-VMHostSnmp

[Troy_Clavell]

Hello PowerCLI Experts,

I have been tasked to change the snmp.conf file for about 100 HP ESX Hosts. I need to replace an old IP with a new IP. below is snip from my snmp.conf file.

The old config is:

dlmod cmaX /usr/lib/libcmaX.so

rwcommunity Sc0rp10 127.0.0.1

rocommunity Or10n 127.0.0.1

rwcommunity Sc0rp10 10.64.3.160

rocommunity Or10n 10.64.3.160

trapcommunity Or10n

trapsink 10.64.3.160 Or10n

New config needs to be:

dlmod cmaX /usr/lib/libcmaX.so

rwcommunity Sc0rp10 127.0.0.1

rocommunity Or10n 127.0.0.1

rwcommunity Sc0rp10 10.65.49.106

rocommunity Or10n 10.65.49.106

trapcommunity Or10n

trapsink 10.65.49.106 Or10n

Is the Set-VMHostSnmp cmdlet the way to go? I also would like to restart the snmpd service on each host after the change.

Enviornment:

ESX 3.5.0 U4

vCenter 2.5.0U5

Thanks in advance!

[LucD · Accepted solution]

Yes, you can use the Set-VMHostSnmp cmdlet to configure snmp on the ESX host.

Just remember you need to connect to the ESX host not to the vCenter.

For some examples have a look at Setting SNMP configuration in VMWare using Powershell

The Start-VMHostService cmdlet unfortunately can not be used to restart the snmpd daemon.

[Troy_Clavell]

Thanks ! Bummer I can't restart the snmp daemon as well.

[LucD]

Wait a sec, I'm just testing a SDK method that could be used.

Let me get back to you.

[Troy_Clavell]

That would be great. I really don't want to have to do them 1 at a time.

Thank you!

[LucD]

This is a possible solution but it will require the use of plink and sudo should be configured on the ESX hosts.

Something like this

$User = <account>
$Pswd = <password>
$Computer = <ESX-hostname>
$plink = <Putty-directory>\plink.exe"
$plinkoptions = " -v -batch -pw $Pswd"

$cmd1 = 'service snmpd restart'
$remoteCommand = '"' + $cmd1 + '"'
$command = $plink + " " + $plinkoptions + " " + $User + "@" + $computer + " " + $remoteCommand

$msg = Invoke-Expression -command $command 

Not sure if this will save time if you first have to set up sudo though

[Troy_Clavell]

very helpful indeed. Since we use root for everything (not best practice, but...) it will be even better.

[admin]

Luc,

Should I take this to mean there is no vSphere API for restarting SNMP? If so I assume you would have posted that approach. This seems a bit nuts to me.

=====

Carter Shanklin

Read the PowerCLI Blog
[Follow me on Twitter|http://twitter.com/cshanklin]

[lamw]

I'm assuming Luc looked at restartService but it doesn't support snmp service unfortunately and reconfiguring SNMP doesn't auto-start the service if it isn't already running

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

William Lam

VMware vExpert 2009

VMware ESX/ESXi scripts and resources at:

Twitter: @lamw

VMware Code Central - Scripts/Sample code for Developers and Administrators

VMware Developer Comuunity

If you find this information useful, please award points for "correct" or "helpful".

[LucD]

William is correct. The RestartService method only accepts the same services the Start-VMHostService cmdlet accepts.

Which makes sense since the cmdlet is most probably based on that method.

[Troy_Clavell]

Should I take this to mean there is no vSphere API for restarting SNMP? If so I assume you would have posted that approach. This seems a bit nuts to me.

would be a nice to have.....

[LucD]

Agreed. For any ESX/ESXi service.