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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

 
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Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

Hello,

What is the procedure to safely shutdown a 4 nodes SImpliVity cluster with vCSA VM hosted by this cluster?

Thanks !

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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

Hello @jfc 

Normally you would shutdown all vms (or evacuate them) and shutdown the Omnistack controller  before shutting down the host. The recommended method to shutdown the Omnistack controller is to connect via putty (SSH) and run the command "svt-shudown-safe" and wait until it's down. 

Now, this command won't work when you you power off the VCSA VM so you need an alternate method. I would suggest doing the following: 

1. Work first on the hosts that don't have the VCSA running on them. 

2. Shutdown all VMs. 

3. Connect via putty to the Omnistack controller and run the command "svt-shutdown-safe". Wait until you see it turned off in vcenter. 

4. Put the node in maintenance mode and shut it down. 

 

For the host that has VCSA running on it:

1. Shutdown all VMs except OmniStack controller. 

2. Connect to the Omnistack controller via putty (SSH). Since VCSA will be down, you won't be able to use Vcenter credentials. Instead, use your svtcli account to log in. 

3. Once logged in, run these commands: 

-- sudo su

-- source /var/tmp/build/bin/appsetup

-- stop svtfs (wait until you get the prompt back and says "stop/waiting")

-- shutdown -hy now

This is going to shutdown the OVC gracefully. 

Continue and put this host in maintenance mode and shut it down. 

NOTE: The above procedure assumes you are running software version 3.7.3 or later. If you are on an older version you will need to contact support for assistance. 

Hope it helps, 

Gus

 

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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

Hi!

@gustenar 

Is this still a valid method to properly shutdown a SimpliVity cluster?

I need to shutdown a customers 2-node cluster for maintenace next week.

Running on OmniStack 4.0.1

Br / Tony

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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

Hello @fahlis 

The only command that changes is -- stop svtfs (wait until you get the prompt back and says "stop/waiting")

Use instead "systemctl stop svtfs@0" in version 4.0.1

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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

@gustenar
Many thanks.
Then I feel confident.
Is there perhaps a white paper available for the procedure?

Br / Tony
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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

@fahlis 

Check our video library with the procedure:

https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=sf000045407en_us

 

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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

@gustenar
Great, even better
Br / Tony
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Re: Safely shutdown SimpliVity cluster with internal vCenter Server Appliance

@gustenar
I had some issues with this.
It worked just fine until after the step.
"systemctl stop svtfs@0"
At this point the OVC stalled and nothing happened for approx 30min.
I then decided to power it off.
Set the host in maintenance mode and shut down.
Crossed my fingers and booted up after maintenance window and found all VMs on that node as "inaccessible"
Exit maintenance mode.
The OVC could not start.
Enter maintenance mode again.
One more reboot and lucky for me it worked.
I don't know what the cause of OVC stalling was.
Any hints?

Br /Tony