release-0.22.0

Added

• Support volume re-provisioning. If volume is broken and PVC detects it as lost, operator re-provisions the volume
• When new CHI is created, all hosts are created in parallel
• Allow to turn off waiting for running queries to complete. This can be done both in operator configuration or in CHI itself:
  In operator configuration:

spec:
  reconcile:
    host:
      wait:
        queries: "false"

In CHI:

spec:
  reconciling:
    policy: nowait

• When changes are applied to clusters with a lot of shards, the change is probed on a first node only. Is successul, it is applied on 50% of shards. This can be configured in operator configuration:

reconcile:
  # Reconcile runtime settings
  runtime:
    # Max number of concurrent CHI reconciles in progress
    reconcileCHIsThreadsNumber: 10

    # The operator reconciles shards concurrently in each CHI with the following limitations:
    #   1. Number of shards being reconciled (and thus having hosts down) in each CHI concurrently
    #      can not be greater than 'reconcileShardsThreadsNumber'.
    #   2. Percentage of shards being reconciled (and thus having hosts down) in each CHI concurrently
    #      can not be greater than 'reconcileShardsMaxConcurrencyPercent'.
    #   3. The first shard is always reconciled alone. Concurrency starts from the second shard and onward.
    # Thus limiting number of shards being reconciled (and thus having hosts down) in each CHI by both number and percentage

    # Max number of concurrent shard reconciles within one CHI in progress
    reconcileShardsThreadsNumber: 5
    # Max percentage of concurrent shard reconciles within one CHI in progress
    reconcileShardsMaxConcurrencyPercent: 50

• Operator-related metrics are exposed to Prometheus now:

clickhouse_operator_chi_reconciles_started
clickhouse_operator_chi_reconciles_completed
clickhouse_operator_chi_reconciles_timings

clickhouse_operator_host_reconciles_started
clickhouse_operator_host_reconciles_completed
clickhouse_operator_host_reconciles_restarts
clickhouse_operator_host_reconciles_errors
clickhouse_operator_host_reconciles_timings

clickhouse_operator_pod_add_events
clickhouse_operator_pod_update_events
clickhouse_operator_pod_delete_events

Changed

• fix typo in operator_installation_details.md by @seeekr in #1219
• Set operator release date fot createdAt CSV field by @dmvolod in #1223
• Fix type for exclude and include fields in 70-chop-config.yaml example by @dmvolod in #1222
• change dashboard refresh rate 1m and add min_duration_ms, max_duration_ms dashboard variables, rename query_type to query_kind by @Slach in #1235
• add securityContext to helm chart by @farodin91 in #1255
• metrics-exporter collects all hosts and queries in parallel

Fixed

• Fixed a bug when operator could break multiple nodes if incorrect configuration has been deployed several times in a row
• Fixed a bug when schema could not be created on new nodes, if nodes took too long to start
• Fixed a bug when services were not reconciled in rare cases

New Contributors

• @seeekr made their first contribution in #1219
• @dmvolod made their first contribution in #1223
• @farodin91 made their first contribution in #1255

Full Changelog: release-0.21.3...release-0.22.0