147 lines
6.7 KiB
YAML
147 lines
6.7 KiB
YAML
# prometheus-operator twin of felis-alerts.yaml (kube-prometheus-stack loads
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# rules through the PrometheusRule CRD, not rule_files). The plain file is the
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# promtool-tested source; keep the groups in sync.
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apiVersion: monitoring.coreos.com/v1
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kind: PrometheusRule
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metadata:
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name: felis-alerts
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namespace: monitoring
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labels:
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# Change to match your stack's ruleSelector (kube-prometheus-stack's
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# default selects on the Helm release name).
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release: kube-prometheus-stack
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spec:
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groups:
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- name: felis.rules
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rules:
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- alert: FelisImageBuildFailures
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expr: increase(felis_image_build_failures_total[6h]) > 0
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: "modpack/image build failed in the last 6h"
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description: >-
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felis_image_build_failures_total increased. Inspect the failed build Job
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(kubectl logs -n felis-build job/<build-job>); the same error text is on
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GET /api/v1/images/build/{id} and in the submitter's row in the panel.
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- alert: FelisSlowServerStarts
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expr: histogram_quantile(0.9, sum by (le) (rate(felis_start_duration_seconds_bucket[30m]))) > 300
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for: 15m
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labels:
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severity: warning
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annotations:
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summary: "p90 server start time exceeds 5 minutes"
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description: >-
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Starts regularly take over five minutes (felis_start_duration_seconds,
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observed when readiness is first reached). A start that never completes
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records nothing — cross-check desiredState=Running servers with no ready
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phase (troubleshooting §1).
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- name: felis.node.rules
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rules:
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- alert: FelisNodeDiskSpaceLow
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expr: >-
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node_filesystem_avail_bytes{fstype=~"ext4|xfs|btrfs"}
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/ node_filesystem_size_bytes{fstype=~"ext4|xfs|btrfs"} < 0.15
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for: 15m
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labels:
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severity: warning
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annotations:
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summary: "node filesystem {{ $labels.mountpoint }} below 15% available"
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description: >-
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Sustained disk pressure evicts game pods and garbage-collects images
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(troubleshooting §13b). Free space before kubelet raises DiskPressure.
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- alert: FelisNodeDiskPressure
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expr: kube_node_status_condition{condition="DiskPressure",status="true"} == 1
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for: 5m
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labels:
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severity: critical
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annotations:
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summary: "kubelet reports DiskPressure on {{ $labels.node }}"
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description: >-
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The eviction chain is in progress: control-plane pods hold
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system-cluster-critical and survive, game pods do not. Free disk now
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(troubleshooting §13b).
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- alert: FelisNodeMemoryLow
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expr: node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes < 0.10
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for: 15m
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labels:
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severity: warning
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annotations:
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summary: "node memory available below 10% for 15m"
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description: >-
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PostgreSQL, the control plane, the registry and game servers share one
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node; sustained memory pressure risks OOM kills.
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- name: felis.backup.rules
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rules:
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- alert: FelisDBBackupStale
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expr: time() - max(felis_db_backup_last_success_timestamp_seconds) > 26 * 3600
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for: 10m
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labels:
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severity: critical
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annotations:
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summary: "no control-plane database backup in over 26h"
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description: >-
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felis-db-backup.timer runs daily; the newest bundle is more than a day
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old. Read `journalctl -u felis-db-backup` on the host, then take one now
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with `sudo felis db backup` (troubleshooting §16).
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- alert: FelisDBBackupMetricMissing
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expr: absent(felis_db_backup_last_success_timestamp_seconds)
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for: 2h
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labels:
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severity: warning
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annotations:
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summary: "database backup freshness is not being scraped"
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description: >-
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No felis_db_backup_last_success_timestamp_seconds series, so
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FelisDBBackupStale cannot fire. Point node-exporter's
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--collector.textfile.directory at the directory of
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FELIS_DB_BACKUP_METRICS (default /var/lib/node_exporter/textfile_collector)
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(troubleshooting §16).
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- name: felis.auth.rules
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rules:
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- alert: FelisMailBudgetExhausted
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expr: sum(increase(felis_mail_total{result="throttled"}[15m])) > 0
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labels:
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severity: warning
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annotations:
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summary: "the install-wide mail budget refused mail"
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description: >-
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felis_mail_total{result="throttled"} increased: [smtp] max_per_hour is
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spent, and every sign-in code is refused with 429 mail_rate_limited until
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it refills. Check felis_rate_limited_total for a flood before raising the
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budget (troubleshooting §17).
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- alert: FelisMailDeliveryFailing
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expr: sum(increase(felis_mail_total{result="failed"}[15m])) > 0
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labels:
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severity: warning
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annotations:
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summary: "the SMTP relay refused mail in the last 15m"
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description: >-
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felis_mail_total{result="failed"} increased: sign-in codes are not being
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delivered (502 mail_undeliverable). The relay's reason is in the
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felis-api log (troubleshooting §17).
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- alert: FelisSignInFlood
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expr: sum(rate(felis_rate_limited_total{scope="auth_door"}[5m])) * 60 > 10
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for: 10m
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labels:
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severity: warning
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annotations:
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summary: "sign-in doors refusing over 10 requests a minute"
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description: >-
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The per-address sign-in limit has been refusing callers for 10 minutes.
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A script is hammering the auth doors; if real users report rate_limited
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at once instead, [auth] client_ip_header is missing and everyone shares
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the proxy's address (troubleshooting §17).
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- alert: FelisOTPAccountLocked
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expr: sum by (purpose) (increase(felis_auth_otp_lockouts_total[1h])) > 0
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labels:
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severity: warning
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annotations:
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summary: "an account's email-code sign-in locked after 10 wrong codes"
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description: >-
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Someone entered 10 wrong codes for one account within 24h ({{ $labels.purpose }}).
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The audit log names the account (action auth.otp.locked); the owner was
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mailed. Unless they fumbled codes, someone is guessing at it
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(troubleshooting §17).
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