Kubernetes API Monitoring

bash-5.0# cat etcd.yml groups: - name: etcd rules: - alert: EtcdBackupJobFailed expr: kube_job_status_failed{job_name=~"etcd-backup.*"} offset 5m > 0 for: 0m labels: severity: high type: etcd annotations: summary: Etcd Backup Job failed for cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: Etcd Backup Job {{$labels.namespace}}/{{$labels.job_name}} failed to complete reason: {{$labels.reason}}" - alert: EtcdDown expr: up{job="etcd"} offset 5m == 0 for: 10m labels: severity: critical type: etcd annotations: description: Etcd container down on cluster {{ $labels.cluster }} summary: "Cluster {{ $labels.cluster }}: Etcd container down on host {{ $labels.host }}" - alert: EtcdInsufficientMembers expr: count(etcd_server_id) by (cluster) % 2 == 0 for: 1m labels: severity: critical type: etcd annotations: summary: Etcd insufficient members on cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: Etcd cluster should have an odd number of members\n VALUE = {{ $value }}" - alert: EtcdNoLeader expr: etcd_server_has_leader == 0 for: 1m labels: severity: critical type: etcd annotations: summary: Etcd no Leader on cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: Etcd cluster have no leader\n VALUE = {{ $value }}" - alert: EtcdHighNumberOfLeaderChanges expr: increase(etcd_server_leader_changes_seen_total[10m] offset 5m) > 2 for: 0m labels: severity: high type: etcd annotations: summary: Etcd high number of leader changes on cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: Etcd leader changed more than 2 times during 10 minutes\n VALUE = {{ $value }}" - alert: EtcdHighNumberOfFailedGrpcRequests expr: sum(rate(grpc_server_handled_total{grpc_code!="OK"}[1m] offset 5m )) BY (grpc_service, grpc_method, cluster, host) / sum(rate(grpc_server_handled_total[1m] offset 5m )) BY (grpc_service, grpc_method, cluster, host) > 0.01 for: 2m labels: severity: warning type: etcd annotations: summary: Etcd high number of failed GRPC requests on cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: More than 1% GRPC request failure detected on Etcd host {{ $labels.host }}\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - alert: EtcdHighNumberOfFailedProposals expr: increase(etcd_server_proposals_failed_total[1h]) > 5 for: 2m labels: severity: warning type: etcd annotations: summary: Etcd high number of failed proposals on cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: Etcd server got more than 5 failed proposals past hour\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - alert: EtcdHighFsyncDurations expr: histogram_quantile(0.99, rate(etcd_disk_wal_fsync_duration_seconds_bucket[1m] offset 5m )) > 0.5 for: 2m labels: severity: warning type: etcd annotations: summary: Etcd high fsync durations on cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: Etcd WAL fsync duration increasing, 99th percentile is over 0.5s on Etcd host {{ $labels.host }}\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" - alert: EtcdHighCommitDurations expr: histogram_quantile(0.99, rate(etcd_disk_backend_commit_duration_seconds_bucket[1m] offset 5m )) > 0.25 for: 2m labels: severity: warning type: etcd annotations: summary: Etcd high commit durations on cluster {{ $labels.cluster }} description: "Cluster {{ $labels.cluster }}: Etcd commit duration increasing, 99th percentile is over 0.25s on Etcd host {{ $labels.host }}\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" bash-5.0#