Allow operators to override ceph config section parameters other than "global"

Registered by Francesco Pantano on 2019-05-09

It's not an unusual scenario seeing operators customizing the ceph config section parameters.
Using TripleO is pretty simple do that because there is the CephConfigOverride template variable that maps all the required info to be placed into the global section [1].
The idea behind this blueprint is to give the opportunity to override parameters in different sections of ceph.conf like we've done with the global section.
According to the ceph doc [2] we have these available sections:

* global
* mon
* osd
* mgr
* mds
* client

and for instance, in the same way of CephConfigOverride, we can provide an Osd override parameter to collect all the extra info that operators want to override in the "osd" section and then pass them to the ceph-ansible playbook to build the appropriate ceph.conf file.

We can extend this concept to the other sections, allowing operators to add in TripleO all the informations they want to override on ceph.conf.

[1] https://github.com/openstack/tripleo-heat-templates/blob/master/deployment/ceph-ansible/ceph-base.yaml#L368
[2] http://docs.ceph.com/docs/nautilus/rados/configuration/ceph-conf/#configuration-sections

Blueprint information

Status:
Complete
Approver:
John Fulton
Priority:
Low
Drafter:
Francesco Pantano
Direction:
Approved
Assignee:
Francesco Pantano
Definition:
Approved
Series goal:
Accepted for train
Implementation:
Implemented
Milestone target:
milestone icon train-3
Started by
Giulio Fidente on 2019-08-01
Completed by
Francesco Pantano on 2019-08-08

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.opendev.org/#/q/topic:ceph-config-override

Addressed by: https://review.opendev.org/658161
    Allow to override ceph config section parameters

Gerrit topic: https://review.opendev.org/#/q/topic:ceph_config_overrides

Gerrit topic: https://review.opendev.org/#/q/topic:bp/ceph-config-overrides

Addressed by: https://review.opendev.org/674234
    Override multiple ceph.conf sections using CephConfigOverrides

Addressed by: https://review.opendev.org/702183
    Allow overrides in non global ceph.conf sections

Addressed by: https://review.opendev.org/702485
    Allow overrides in non global ceph.conf sections

Addressed by: https://review.opendev.org/702923
    Allow overrides in non global ceph.conf sections

Addressed by: https://review.opendev.org/703809
    Allow overrides in non global ceph.conf sections

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Work Items

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