Mention deferred service events in README

This is a boilerplate section that will eventually
be added to the README for every charm that supports
the deferred restart feature.

Change-Id: I1226ee0039cca11dd8c341e0f511de125ae8c633
This commit is contained in:
Peter Matulis 2021-06-14 12:36:25 -04:00
parent 2e816efe01
commit 80d390961d
1 changed files with 21 additions and 0 deletions

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@ -123,3 +123,24 @@ charm's instance-mtu option can be used to reduce instance MTU via DHCP.
juju set neutron-gateway instance-mtu=1400
Note that this option was added in Havana and will be ignored in older releases.
Deferred service events
=======================
Operational or maintenance procedures applied to a cloud often lead to the
restarting of various OpenStack services and/or the calling of certain charm
hooks. Although normal, such events can be undesirable due to the service
interruptions they can cause.
The deferred service events feature provides the operator the choice of
preventing these service restarts and hook calls from occurring, which can then
be resolved at a more opportune time.
See the [Deferred service events][cdg-deferred-service-events] page in the
[OpenStack Charms Deployment Guide][cdg] for an in-depth treatment of this
feature.
<!-- LINKS -->
[cdg]: https://docs.openstack.org/project-deploy-guide/charm-deployment-guide
[cdg-deferred-service-events]: https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/latest/deferred-events.html