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: I4aa805273f83b9cd88d96fa0e77b12e829cb2499
This commit is contained in:
Peter Matulis 2021-07-09 13:46:29 -04:00
parent 7ad1afeb74
commit e6e8d72f50
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@ -175,3 +175,23 @@ Note: If data-port is specified, the value of ext-port is ignored. This
prevents misconfiguration of the charm. Aditionaly, in this scenario an error
message is logged and the unit is marked as blocked in order to notify about
the misconfiguration.
# 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