New features:
- Added liveness (/ping) and readiness (/replicas_status) probes to ClickHouse pods. Those can be overwritten on podTemplate level
- Customizable graceful reconcile logic. Now it is possible to turn-on 'wait' behaviour that would apply configuration changes and upgrades using the following algorithm:
- Host is (optionally) excluded from ClickHouse remote_servers
- Operator (optionally) waits for exclusion to take an effect
- Host is updated
- If it is a new host, schema is created at this stage. That ensures host is not in the cluster until schema is created. Fixes #561
- Host is added back to remote_servers
- Operator (optionally) waits for inclusion to take an effect before moving to the next host.
'Optional' steps are turned-off by default and can be turned on in operator configuration:
reconcileWaitInclude: false
reconcileWaitExclude: false
or enabled for particular CHI update:
spec:
reconciling:
policy: "nowait"|"wait"
- Cluster 'stop' operation now correctly removes CHI from monitoring and deletes LoadBalancer service
- podTemplate metadata is now supported (annotations, labels). Fixes #554
- 'auto' templates are now available. If templating.policy=auto is specified for ClickHouseInstallationTemplate object, those templates are automatically applied to all ClickHouseInstallations.
- Minor changes to ClickHouse default profile settings.
Bug fixes:
- External labels, annotations and finalizers are correctly preserved for services.
- It was possible that finalizer has been inserted multiple times to CHI
** Note: existing ClickHouse clusters will be restarted after operator upgrade because of adding Liveness/Readiness probes **