I have two ansible roles, one for enter, one for exit. There’s likely better
ways to do this — and I’ll not be surprised if someone here lets me know.
They’re using orch commands via the cephadm shell. I’m using Ansible for other
configuration management in my environment, as well, including setting up
clients of the ceph cluster.
Below excerpts from main.yml in the “tasks” for the enter/exit roles. The host
I’m running ansible from is one of my CEPH servers - I’ve limited which process
run there though so it’s in the cluster but not equal to the others.
—————
Enter
—————
- name: Ceph Maintenance Mode Enter
shell:
cmd: ' cephadm shell ceph orch host maintenance enter {{
(ansible_ssh_host|default(ansible_host))|default(inventory_hostname) }} --force
--yes-i-really-mean-it ‘
become: True
—————
Exit
—————
- name: Ceph Maintenance Mode Exit
shell:
cmd: 'cephadm shell ceph orch host maintenance exit {{
(ansible_ssh_host|default(ansible_host))|default(inventory_hostname) }} ‘
become: True
connection: local
- name: Wait for Ceph to be available
ansible.builtin.wait_for:
delay: 60
host: '{{
(ansible_ssh_host|default(ansible_host))|default(inventory_hostname) }}’
port: 9100
connection: local
> On Jun 12, 2024, at 11:28 AM, Michael Worsham <[email protected]>
> wrote:
>
> Interesting. How do you set this "maintenance mode"? If you have a series of
> documented steps that you have to do and could provide as an example, that
> would be beneficial for my efforts.
>
> We are in the process of standing up both a dev-test environment consisting
> of 3 Ceph servers (strictly for testing purposes) and a new production
> environment consisting of 20+ Ceph servers.
>
> We are using Ubuntu 22.04.
>
> -- Michael
> From: Daniel Brown <[email protected]>
> Sent: Wednesday, June 12, 2024 9:18 AM
> To: Anthony D'Atri <[email protected]>
> Cc: Michael Worsham <[email protected]>; [email protected]
> <[email protected]>
> Subject: Re: [ceph-users] Patching Ceph cluster
> This is an external email. Please take care when clicking links or opening
> attachments. When in doubt, check with the Help Desk or Security.
>
>
> There’s also a Maintenance mode that you can set for each server, as you’re
> doing updates, so that the cluster doesn’t try to move data from affected
> OSD’s, while the server being updated is offline or down. I’ve worked some on
> automating this with Ansible, but have found my process (and/or my cluster)
> still requires some manual intervention while it’s running to get things done
> cleanly.
>
>
>
> > On Jun 12, 2024, at 8:49 AM, Anthony D'Atri <[email protected]> wrote:
> >
> > Do you mean patching the OS?
> >
> > If so, easy -- one node at a time, then after it comes back up, wait until
> > all PGs are active+clean and the mon quorum is complete before proceeding.
> >
> >
> >
> >> On Jun 12, 2024, at 07:56, Michael Worsham <[email protected]>
> >> wrote:
> >>
> >> What is the proper way to patch a Ceph cluster and reboot the servers in
> >> said cluster if a reboot is necessary for said updates? And is it possible
> >> to automate it via Ansible? This message and its attachments are from Data
> >> Dimensions and are intended only for the use of the individual or entity
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> >> you are hereby notified that any dissemination, distribution, or copying
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> >> communication in error, please notify the sender immediately and
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