Charmed MySQL
- By Canonical Data Platform
- Cloud
Channel | Revision | Published | Runs on |
---|---|---|---|
8.0/stable | 240 | 20 Jun 2024 | |
8.0/candidate | 240 | 17 Jun 2024 | |
8.0/beta | 275 | 23 Aug 2024 | |
8.0/beta | 274 | 23 Aug 2024 | |
8.0/edge | 281 | 05 Sep 2024 | |
8.0/edge | 280 | 05 Sep 2024 |
juju deploy mysql --channel 8.0/stable
Deploy universal operators easily with Juju, the Universal Operator Lifecycle Manager.
Platform:
Removal of Async replication
Pre-requisits
Make sure both Rome
and Lisbon
Clusters are deployed using the Async Deployment manual!
Detach Cluster from ClusterSet
Note: It is important to switchover the
Primary
Cluster before detaching it from ClusterSet!
Assuming the Lisbon
is a current Primary
and we want to detach Rome
(for removal or reuse):
juju remove-relation replication-offer db2:replication
The command above will move cluster Rome
into the detached state blocked
keeping all the data in place.
All units in Rome
will be in a standalone (non-clusterized) read-only state.
From this points, there are three options, as described in the following sections.
Rejoin detached cluster into previous ClusterSet
At this stage, the detached/blocked cluster Rome
can re-join the previous ClusterSet by restoring async integration/relation:
juju switch rome
juju integrate replication-offer db1:replication
juju switch lisbon
juju run db2/leader create-replication
Removing detached cluster
Remove no-longer necessary Cluster Rome
(and destroy storage if Rome data is no longer necessary):
juju remove-application db1 # --destroy-storage
New ClusterSet from detached Cluster
Convert Rome
to the new Cluster/ClusterSet keeping the current data in use:
juju run -m rome db1/leader recreate-cluster