3 Replies Latest reply on Dec 8, 2015 12:46 PM by TheCrazyConsultant

    Script to Re-Enable Alarms in vCenter

    jessem Enthusiast

      Ok here is my deal.  Sometimes as engineers, we forget to re-enable host alarms.  When we are doing maintenance, we right-click host, disable alarms.


      I want to be able to run an automated script maybe via Task Scheduler in Windows to re-enable all the host based alarms once a day nightly.  I want to be able to re-enable all the host alarms on All hosts within that vCenter.  However, in this example, I thought I was re-enabling alarms based on any host that starts with a D.  This script is not working.  Anyone have suggestions on the wildcare use for ALL HOSTS and then the option for specified hosts that start with just the D letter?


      $alarmMgr = Get-View AlarmManager

      $esx = Get-VMHost D*


        • 1. Re: Script to Re-Enable Alarms in vCenter
          TheCrazyConsultant Enthusiast

          Could you please try:


          For all hosts

          $alarmMgr = Get-View AlarmManager

          Get-VMHost | foreach-object{




          For host starting with D.

          $alarmMgr = Get-View AlarmManager

          Get-VMHost D* | foreach-object{




          (I am not able to test the script right now)

          • 2. Re: Script to Re-Enable Alarms in vCenter
            jessem Enthusiast

            That worked great!  Thanks.  Question for you.  Could I automate this script to run in Windows (task scheduler) every morning?

            • 3. Re: Script to Re-Enable Alarms in vCenter
              TheCrazyConsultant Enthusiast

              First you will need to obtain:

              an account that will be used to execute this scheduled task (Ideally a service account for this purpose with just enough rights to do the job)

              a host where will you run this scheduled task and the version of PowerCLI/PowerShell associated (For example a 2012R2 server. Avoid a personnal computer)

              confirm that the host is in the same AD that is configured for the VC (It you are planning to use windows authentication to connect to the VC)


              Then modify the script:

              The information below will be a bare minimum assuming that the account that will execute the schedule task is able to connect via windows authentication to the VC

              connect-viserver "your vCenter"

              #All the script here

              disconnect-viserver -Server "your vCenter" -Confirm:$False

              And save it in a path reachable from the "PowerCLI Host" in a file "yourscriptname.ps1"

              (For a script that will run every day adding error handling in the script will be a must)


              Then you will have to create a schedule task in Windows to execute this "yourscriptname.ps1" under the account identified in the first step

              2 solution at this stage:

              Only execute the script
              Identify all snapin/modules needed for your script and add them in the first lines of "yourscriptname.ps1"

              (This is why knowing which version of PowerCLI is necessary. Since PowerCLI 6 some commands are available as module and not as snapin)

              Load "PowerCLI" environment and execute the script. (Using psconsolefile and vim.psc1)


              More details there:

              Running a PowerCLI Scheduled task

              Fixing a (minor) PowerCLI 6 R1 issue

              Schedule task with PowerCLI script