[ovirt-users] Re: what the sequence of shutdown in Cluster enviroment

[张 余歌]

Thanks a lot!

取得 Outlook for Android


From: Simone Tiraboschi 
Sent: Tuesday, November 13, 2018 5:38:18 PM
To: patrickstar12...@hotmail.com
Cc: users
Subject: Re: [ovirt-users] Re: what the sequence of shutdown in Cluster 
enviroment



On Tue, Nov 13, 2018 at 10:23 AM max zhang 
mailto:patrickstar12...@hotmail.com>> wrote:
Thanks,I read the link  just now,But I would like to do it manually(Just 
because I am not often to do it).Would you like to tell me the sequence about 
shutdown?


I really depends if you are on hosted-engine or not and if on hyper converged 
or not, if power management is configured and so on.
If not hosted-engine at all and no power management, I'd suggest:

shutdown:
1. shutdown all VMs
2. set host1 and host2 in maintenance mode from the engine (just to ensure that 
all the locks on storage side are properly removed otherwise the restart could 
take more time)
3. shutdown the engine host
4. shutdown hosts
5. shutdown your SAN

start:
1. start the SAN
2. start hosts
3. start engine host
4. remove hosts from maintenance
5. start VMs


Like as:
shutdown>>
step1:shutdown all VMs is running
step2:shutdown host1
step2:shutdown host2
step3:shutdown engine
step4:shutdown FCSAN storage
start>>
step1:start FCSAN storage
step2:start engine
step2:start host1
step3:start host2

I don't know whether I am right.
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[ovirt-users] Re: what the sequence of shutdown in Cluster enviroment

[Simone Tiraboschi]

On Tue, Nov 13, 2018 at 10:23 AM max zhang 
wrote:

> Thanks,I read the link  just now,But I would like to do it manually(Just
> because I am not often to do it).Would you like to tell me the sequence
> about shutdown?
>
>
I really depends if you are on hosted-engine or not and if on hyper
converged or not, if power management is configured and so on.
If not hosted-engine at all and no power management, I'd suggest:

shutdown:
1. shutdown all VMs
2. set host1 and host2 in maintenance mode from the engine (just to ensure
that all the locks on storage side are properly removed otherwise the
restart could take more time)
3. shutdown the engine host
4. shutdown hosts
5. shutdown your SAN

start:
1. start the SAN
2. start hosts
3. start engine host
4. remove hosts from maintenance
5. start VMs



> Like as:
> shutdown>>
> step1:shutdown all VMs is running
> step2:shutdown host1
> step2:shutdown host2
> step3:shutdown engine
> step4:shutdown FCSAN storage
> start>>
> step1:start FCSAN storage
> step2:start engine
> step2:start host1
> step3:start host2
>
> I don't know whether I am right.
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[ovirt-users] Re: what the sequence of shutdown in Cluster enviroment

[max zhang]

Thanks,I read the link  just now,But I would like to do it manually(Just 
because I am not often to do it).Would you like to tell me the sequence about 
shutdown?

Like as:
shutdown>>
step1:shutdown all VMs is running
step2:shutdown host1
step2:shutdown host2
step3:shutdown engine
step4:shutdown FCSAN storage
start>>
step1:start FCSAN storage
step2:start engine
step2:start host1
step3:start host2

I don't know whether I am right.
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[ovirt-users] Re: what the sequence of shutdown in Cluster enviroment

[Simone Tiraboschi]

Hi,
we have an ansible role specifically designed to automate this:
https://github.com/oVirt/ovirt-ansible-shutdown-env

On Tue, Nov 13, 2018 at 9:49 AM max zhang 
wrote:

> Hi man,There is always a doubt what the sequence of shutdown in Cluster
> enviroment.
> The enviroment like as:
>   engine.host.com
>   node.host1.com
>   node.host2.com
>   FCSAN
> host1 and host2 are in the same cluster.
>
> By the way,after I shutdown all the host,what the  sequence of start in
> Cluster enviroment.
>
> Best regards.
>
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