Override bootstrap host assuming mon[0] is available

[stuartc-graphcore]

When rebuilding mon[0] we need to use a different bootstrap hosts, however many rules have mon[0] hard-coded

[markgoddard]

Each of these roles will need a default for this variable.

I wonder how appropriate the name is, since these roles will execute after bootstrap is complete. How about cephadm_delegate_host?

[stuartc-graphcore]

That makes sense to me too From: Mark Goddard ***@***.***> Date: Tuesday, 4 July 2023 at 09:03 To: stackhpc/ansible-collection-cephadm ***@***.***> Cc: Stuart Cornell ***@***.***>, Author ***@***.***> Subject: Re: [stackhpc/ansible-collection-cephadm] Override bootstrap host assuming mon[0] is available (PR #109) @markgoddard requested changes on this pull request.

________________________________ In roles/commands/tasks/main.yml<#109 (comment)>:

@@ -8,5 +8,5 @@

changed_when: true when: cephadm_commands | length > 0 - delegate_to: "{{ groups['mons'][0] }}" + delegate_to: "{{ cephadm_bootstrap_host }}" Each of these roles will need a default for this variable. I wonder how appropriate the name is, since these roles will execute after bootstrap is complete. How about cephadm_delegate_host? — Reply to this email directly, view it on GitHub<#109 (review)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AMSV7WA2OF4BNTG4MBYZ2LDXOPE5NANCNFSM6AAAAAAZ4Q7JSY>. You are receiving this because you authored the thread.Message ID: ***@***.***> ** We have updated our privacy policy, which contains important information about how we collect and process your personal data. To read the policy, please click here<http://www.graphcore.ai/privacy> ** This email and its attachments are intended solely for the addressed recipients and may contain confidential or legally privileged information. If you are not the intended recipient you must not copy, distribute or disseminate this email in any way; to do so may be unlawful. Any personal data/special category personal data herein are processed in accordance with UK data protection legislation. All associated feasible security measures are in place. Further details are available from the Privacy Notice on the website and/or from the Company. Graphcore Limited (registered in England and Wales with registration number 10185006) is registered at 107 Cheapside, London, UK, EC2V 6DN. This message was scanned for viruses upon transmission. However Graphcore accepts no liability for any such transmission.

[jackhodgkiss]

Some kayobe playbooks I have been working benefits from on PR such as this.

Something such as

delegate_to: "{{ lookup('vars', admin_oc_net_name ~ '_ips')[cephadm_delegate_host | default(groups['mons'][0], true)] }}"

Would allow for overriding the delegate host when needed and lookup resolves an issue whereby if --limit is used against a playbook the task doesn't secretly run on the limited host(s) instead of the chosen delegate.