Altinity/clickhouse-operator

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Altinity Kubernetes Operator for ClickHouse creates, configures and manages ClickHouse® clusters running on Kubernetes

Stars: 2.6k
Forks: 574
Open beginner issues: 0
Indexed issues: 127
Avg merge: 8d 6h
Merged PRs (30d): 6

Dominant language: Go
License: Apache-2.0
Last GitHub push: Aug 20, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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127 open issues indexed

Recreate can take a whole shard (or Keeper quorum) down when a pod is slow to delete Open

Difficulty 4/5 3-5 days Newbie friendliness 54/100

Altinity/clickhouse-operator#2078 · 3 comments · Opened Sep 9, 2026
Reconcile of large CHIs is much slower since 0.27: ActionPlan is re-rendered on every status update Open

big deployment planned for review

Difficulty 3/5 1-2 days Newbie friendliness 20/100

Altinity/clickhouse-operator#2066 · 1 reaction · Opened Aug 18, 2026
Per-host status writes rewrite the full CHI .status, causing repeated update conflicts under reconcile concurrency Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

Altinity/clickhouse-operator#2064 · 1 comment · Opened Aug 13, 2026
buildCR issues one uncached StatefulSet GET per host (twice per reconcile) instead of a single List/cache Open

big deployment planned for review

Difficulty 4/5 3-5 days Newbie friendliness 52/100

Altinity/clickhouse-operator#2063 · Opened Aug 13, 2026
Host deletion failures cannot propagate: operator removes the CHI finalizer unconditionally, orphaning PVCs Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

Altinity/clickhouse-operator#2056 · Opened Aug 4, 2026
Operator force-restarts a host that is still starting up: SYSTEM SHUTDOWN fails, scale-down fallback SIGTERMs it mid-load, and the aborted pass repeats forever Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

Altinity/clickhouse-operator#2053 · Opened Jul 30, 2026
Operator throttles itself at scale with >400 CHI pods — reconcile concurrency and the K8s client rate limiter aren't linked Open

big deployment planned for review research required

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Altinity/clickhouse-operator#2045 · 1 comment · Opened Jul 23, 2026
ClickHouseKeeperInstallation stuck at status: InProgress despite healthy 3-node quorum (operator 0.27.0) Open

Keeper

Difficulty 4/5 3-5 days Newbie friendliness 55/100

Altinity/clickhouse-operator#2035 · 4 comments · Opened Jul 12, 2026
Clickhouse cluster creation fails with setcap cap_ipc_lock=+ep /usr/bin/clickhouse error in OpenShift Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Altinity/clickhouse-operator#2027 · 3 comments · Opened Jul 2, 2026
Bug: table migration failure doesn't return error Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

Altinity/clickhouse-operator#2021 · 2 comments · Opened Jun 30, 2026
Feature request: register pprof endpoint for profiling usage Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Altinity/clickhouse-operator#2016 · Opened Jun 30, 2026
Add CHI-scope lifecycle hooks for reconcile transitions Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

Altinity/clickhouse-operator#2012 · 2 reactions · Opened Jun 24, 2026
ClickHouseOperatorConfiguration watch.namespaces.include is overwritten by env WATCH_NAMESPACE in OLM installation Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

Altinity/clickhouse-operator#2008 · 5 comments · Opened Jun 15, 2026
Support custom labels on Pods created by clickhouseinstallations Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

Altinity/clickhouse-operator#1999 · 1 comment · Opened May 29, 2026
When operator pod crashes or it is restarted it restarts the chi pods Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Altinity/clickhouse-operator#1987 · 5 comments · Opened May 20, 2026
Schema Skew Issue Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Altinity/clickhouse-operator#1986 · 1 comment · Opened May 19, 2026
External operators can't import v1 API types as types and merge logic live in the same package as busines logic Open

planned

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Altinity/clickhouse-operator#1985 · 1 reaction · Opened May 18, 2026
Annotation for current CHK quorum leader Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Altinity/clickhouse-operator#1983 · 2 comments · Opened May 9, 2026
Operator should add graceful shutdown to the pods Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Altinity/clickhouse-operator#1979 · 5 comments · 2 reactions · Opened May 6, 2026
Remove deprecated `OnePerHost` pod-distribution value Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

Altinity/clickhouse-operator#1978 · 1 reaction · Opened May 5, 2026
Operator stalls after Velero restore; CHI stuck InProgress until operator pod restart — DeltaFIFO “slow event handlers” / high queue depth Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

Altinity/clickhouse-operator#1969 · Opened Apr 24, 2026
ClickHouseInstallation user settings support for auth_methods Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

Altinity/clickhouse-operator#1958 · 1 comment · Opened Apr 16, 2026
SYSTEM DROP REPLICA being ran from an empty replica if `0-0` is being recovered from its replica Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

Altinity/clickhouse-operator#1954 · Opened Apr 10, 2026
The replicas are dropped when adding new disks into a existing JBOD volume Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Altinity/clickhouse-operator#1946 · 7 comments · Opened Mar 24, 2026
[Request] Add support for resources on the clickhouse-logs container Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

Altinity/clickhouse-operator#1944 · 2 comments · Opened Mar 19, 2026
SYSTEM DROP REPLICA fails during replica scale-down due to no retry — stale ZK metadata left behind Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

Altinity/clickhouse-operator#1943 · 2 comments · Opened Mar 19, 2026
Bug: `SYSTEM DROP DATABASE REPLICA` uses wrong shard identifier during scale-down of Replicated database with custom shard/replica names Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

Altinity/clickhouse-operator#1936 · 2 comments · 1 reaction · Opened Mar 3, 2026
After Restarting keeper pods, all 3 pods go into fail state Open

Keeper

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1935 · 4 comments · Opened Mar 3, 2026
REPLICA_ALREADY_EXISTS due to hardcoded UUID in the replicas Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1932 · 2 reactions · Opened Feb 26, 2026
ZooKeeper entries not cleaned up when a shard is removed Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Altinity/clickhouse-operator#1927 · Opened Feb 18, 2026
CRD in Operator 0.25.5 have invalid value for watched namespaces Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

Altinity/clickhouse-operator#1908 · 9 comments · Opened Jan 16, 2026
CHI StatfulSets deleted after reconciliation Open

fixed

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Altinity/clickhouse-operator#1907 · 7 comments · 1 reaction · Opened Jan 14, 2026
Operator could not create Keeper Pods Open

Keeper

Difficulty 4/5 3-5 days Newbie friendliness 38/100

Altinity/clickhouse-operator#1905 · 25 comments · 1 reaction · Opened Jan 14, 2026
Infinite Reconciliation Loop Due to ActionPlan False Positive on Resource Quantity String Representation Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Altinity/clickhouse-operator#1904 · 1 comment · Opened Jan 12, 2026
🐞 Fix: ClickHouse Operator drops container-level securityContext Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

Altinity/clickhouse-operator#1898 · 9 comments · Opened Dec 30, 2025
Add lease system, multiple replicas and pdb Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

Altinity/clickhouse-operator#1887 · 1 comment · Opened Dec 12, 2025
Grafana Dashboards not being installed as expected Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

Altinity/clickhouse-operator#1875 · 2 comments · Opened Nov 29, 2025
Large Cluster Configmap Limits Open

planned for review research required

Difficulty 5/5 Over a week Newbie friendliness 25/100

Altinity/clickhouse-operator#1874 · 1 comment · Opened Nov 27, 2025
Operator normalizes single-element grant arrays to strings, causing Helm upgrade conflicts Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Altinity/clickhouse-operator#1870 · Opened Nov 23, 2025
Intermittent hang at clickhouse extract-from-config on NFS-backed storage (v25.8) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1857 · 8 comments · Opened Nov 6, 2025
Maintenance & Failover Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1853 · 1 comment · Opened Oct 24, 2025
Long wait for PVC for Keeper to be created Open

Keeper

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1843 · 1 comment · Opened Oct 7, 2025
Service and ServiceMonitor target unused exporter port (8888) Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1831 · 5 comments · Opened Sep 29, 2025
HTTP requests fail if password contains reserved characters Open

possible bug research required

Difficulty 3/5 1-2 days Newbie friendliness 42/100

Altinity/clickhouse-operator#1822 · Opened Sep 23, 2025
TLS Connection Issue: Unable to Establish Secure Connection Between ClickHouse Operator and ClickHouse Keeper Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

Altinity/clickhouse-operator#1813 · 5 comments · 3 reactions · Opened Sep 15, 2025
hostPort always reset to 0 by ContainerEnsurePortByName() Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1812 · Opened Sep 11, 2025
CHK StatefulSets cannot change storage classes due to missing volume claims Open

Keeper

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Altinity/clickhouse-operator#1808 · 3 comments · Opened Sep 9, 2025
keeper PersistentVolumeClaims remain OutOfSync (ArgoCD) Open

Keeper

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1799 · 1 comment · 2 reactions · Opened Aug 24, 2025
Clickhouse Backup Plugin Open

hold ongoing discussion

Altinity/clickhouse-operator#1795 · 2 comments · 4 reactions · 1 assignee · Opened Aug 19, 2025
Configure Metrics Exporter Verbosity via Deployment Variables Open

enhancement ongoing discussion

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Altinity/clickhouse-operator#1793 · 1 comment · 1 reaction · Opened Aug 14, 2025

Altinity/clickhouse-operator

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