Altinity/clickhouse-operator release-0.27.0 on GitHub

Added

Reference CHK from CHI by a name rather than a service:

spec:
  configuration:
    zookeeper:
      keeper:
        name: my-keeper

[EXPERIMENTAL] Pre/post hooks. Allows to inject different SQL commands on reconcile events.
- supported events: Any, HostCreate, HostUpdate, HostStart, HostStop, HostConfigRestart, HostRollout, HostShutdown, HostDelete
- target controls where to run SQL: FirstHost (default), AllHosts, AllShards
- failurePolicy specifies what to do if hook execution fails with an error: Fail (default) or Ignore.
  See CRD for detailed description. Example:

  reconcile:
    host:
      hooks:
        pre:
          - sql:
              queries:
                - "SYSTEM STOP REPLICATION QUEUES"
            events:
              - HostShutdown

Now operator automatically restarts aborted reconcile if failed pod goes online after abort
Restart operator on operator configuration change. #1960. Closes #1930
Allow to exclude certain metrics from exporting. Noisy OS/CPU metrics are now excluded by default. #1975. Closes #1876
Exclusion rules are applied by default and can be changed in operator configuration:

    excludeMetricsRegexp:
      - "^metric\\.(OS.*CPU[0-9]+|CPUFrequencyMHz_[0-9]+)$"

Helm: Allow readiness and liveness probes for operator containers by @janeklb in #1976
Helm: Add security context for crdHook to enable security policy compliance by @qlevasseur-genetec in #1950

Changed

Enabled async_replication and use_xid_64 in Keeper default configuration. Requires Keeper 25.3 or above.
Whitelist Keeper four letter commands by default
Switched Keeper probes to ruok
Kubernetes client library has been upgraded to 0.30.14 by @dcoppa in #1970

Fixed

Fix watch ClickHouseOperatorConfiguration in operator namespace. #1959.
Fix chk probe crashloop by @hananbs in #1961. Closes #1962
Fix secret-backed env upgrade rollout. #1966. Closes #1963
Helm: fix configmap too long by @madrisan in #1949. Closes #1911
build(deps): bump go.opentelemetry.io/otel/sdk from 1.42.0 to 1.43.0 by @dependabot[bot] in #1953
Fix: format string issues by @destinyoooo in #1955
Fix: Prevent CrashLoopBackOff during image upgrade with RollingUpdate (#1926) by @dashashutosh80 in #1956. Closes #1926
Fixed a bug when host has not been removed from status fields hostsWithReplicaCaughtUp and hostsWithTablesCreated when removing from a cluster.
Prevent nil pointer panic in poll when CR Get fails by @wucm667 in #1974. Closes #1972
Scope schema discovery to target host's cluster in multi-cluster CHI by @lukas-pfannschmidt-tr in #1965. Closes #1964
Fix: use plain errors for clickhouse model messages in #1980 by @immanuwell

New Contributors

@qlevasseur-genetec made their first contribution in #1950
@destinyoooo made their first contribution in #1955
@hananbs made their first contribution in #1961
@wucm667 made their first contribution in in #1974
@immanuwell made their first contribution in #1980

Full Changelog: release-0.26.3...release-0.27.0