As the three servers are Centos8 minimal installs. + oVirt HCI wizard to keep them lean and mean... a couple questions

1) which version of python would I need for this (note in script about python 2 but isn't that deprecated?)

[root@thor /]# yum install python
Last metadata expiration check: 2:29:38 ago on Wed 30 Sep 2020 01:18:32 PM EDT.
No match for argument: python
There are following alternatives for "python": python2, python36, python38
Error: Unable to find a match: python

2) When you have three nodes.. one is set to host the ovirt-engine active, and another as backup. If this is added to rc.local. Of the two nodes hosting HA for oVirt-engine.. node which boots first will host (or so it seems). I think if I add this to both those hosts .. it will not create issues. Any thoughts?

On Wed, Sep 30, 2020 at 3:23 PM Derek Atkins <derek@ihtfp.com> wrote:

I run it out of rc.local:

/usr/local/sbin/start_vms.py > /var/log/start_vms 2>&1 &

The script is smart enough to wait for the engine to be fully active.

-derek

On Wed, September 30, 2020 3:11 pm, Jeremey Wise wrote:
> i would like to eventually go ansible route.. and was starting down that
> path.... but this is fabulous.
>
> I will modify and post how it went.
>
> One question: How /where do you set this saved new and delicious script
> so
> once oVirt-engine comes up... it runs?
>
> Thanks
>
> On Wed, Sep 30, 2020 at 2:42 PM Derek Atkins <derek@ihtfp.com> wrote:
>
>> Hi,
>>
>> I had a script based around ovirt-shell which I re-wrote as a script
>> around the Python SDK4 which I run on my engine during the startup
>> sequence. The script will wait for the engine to come up and ensure the
>> storage domains are up before it tries to start the VMs. Then it will
>> go
>> ahead and start the VMs in the specified order with specified delay
>> and/or
>> wait-for-up signal between them.
>>
>> You can find my scripts at https://www.ihtfp.org/ovirt/
>>
>> Or you can go the ansible route :)
>>
>> Enjoy!
>>
>> -derek
>>
>> On Wed, September 30, 2020 11:21 am, Jeremey Wise wrote:
>> > When I have to shut down cluster... ups runs out etc.. I need a
>> sequence
>> > set of just a small number of VMs to "autostart"
>> >
>> > Normally I just use DNS FQND to connect to oVirt engine but as two of
>> my
>> > VMs are a DNS HA cluster.. as well as NTP / SMTP /DHCP etc... I
>> need
>> > those two infrastructure VMs to be auto boot.
>> >
>> > I looked at HA settings for those VMs but it seems to be watching for
>> > pause
>> > /resume.. but it does not imply or state auto start on clean first
>> boot.
>> >
>> > Options?
>> >
>> >
>> > --
>> > p <jeremey.wise@gmail.com>enguinpages
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>> >
>>
>>
>> --
>> Derek Atkins 617-623-3745
>> derek@ihtfp.com www.ihtfp.com
>> Computer and Internet Security Consultant
>>
>>
>
> --
> jeremey.wise@gmail.com
>

--
Derek Atkins 617-623-3745
derek@ihtfp.com www.ihtfp.com
Computer and Internet Security Consultant