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|
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: prometheus
namespace: cicd
finalizers:
- resources-finalizer.argocd.argoproj.io
spec:
project: default
sources:
# Source 1: Upstream Helm chart from prometheus-community
- repoURL: https://prometheus-community.github.io/helm-charts
chart: kube-prometheus-stack
targetRevision: 55.5.0
helm:
releaseName: prometheus
valuesObject:
kubeEtcd:
enabled: true
endpoints:
- 192.168.2.120
- 192.168.2.121
- 192.168.2.122
service:
enabled: true
port: 2381
targetPort: 2381
kubeControllerManager:
enabled: true
endpoints:
- 192.168.2.120
- 192.168.2.121
- 192.168.2.122
service:
enabled: true
port: 10257
targetPort: 10257
serviceMonitor:
enabled: true
https: true
insecureSkipVerify: true
# k3s embeds kube-proxy and kube-scheduler into the main process
# Disable these components to prevent false-positive alerts
kubeProxy:
enabled: false
kubeScheduler:
enabled: false
# Disable alert rules for components not available in k3s
defaultRules:
rules:
kubeProxy: false
kubeSchedulerAlerting: false
kubeSchedulerRecording: false
kubeScheduler: false
# Enable the textfile collector in the node_exporter DaemonSet so
# check-nfs-mount.sh can expose nfs_mount_monitor_consecutive_failures
# as a Prometheus metric without needing a separate exporter.
# extraHostVolumeMounts is the prometheus-node-exporter sub-chart key
# for mounting host paths into the container; extraArgs adds the
# --collector.textfile.directory flag to enable the textfile scraper.
prometheus-node-exporter:
extraArgs:
- --collector.textfile.directory=/host/textfile_collector
extraHostVolumeMounts:
- name: textfile-collector
hostPath: /var/lib/node_exporter/textfile_collector
mountPath: /host/textfile_collector
readOnly: true
mountPropagation: None
prometheus:
prometheusSpec:
additionalArgs:
- name: web.enable-remote-write-receiver
value: ""
- name: web.enable-admin-api
value: ""
enableFeatures:
- exemplar-storage
- otlp-write-receiver
additionalScrapeConfigs: []
tsdb:
outOfOrderTimeWindow: 744h # 31 days
additionalScrapeConfigsSecret:
enabled: true
name: additional-scrape-configs
key: additional-scrape-configs.yaml
storageSpec:
volumeClaimTemplate:
spec:
storageClassName: ""
accessModes: ["ReadWriteOnce"]
resources:
requests:
storage: 10Gi
selector:
matchLabels:
type: local
app: prometheus
alertmanager:
config:
global:
resolve_timeout: 5m
route:
group_by: ['alertname', 'namespace', 'severity']
group_wait: 30s
group_interval: 5m
repeat_interval: 12h
receiver: 'default'
routes:
# Watchdog alert is just for testing, suppress it
- matchers:
- alertname = "Watchdog"
receiver: 'null'
# ArgoCD application alerts - high priority
- matchers:
- component = "argocd"
receiver: 'argocd-alerts'
group_by: ['alertname', 'name', 'severity']
group_wait: 10s
repeat_interval: 6h
# NFS auto-repair alerts from r0/r1/r2 — short group_wait so
# operators are notified quickly when the mount breaks.
# repeat_interval is short: NFS outages are urgent and
# the auto-reboot cycle takes only ~30 s per node.
- matchers:
- component = "nfs"
receiver: 'nfs-alerts'
group_by: ['alertname', 'host', 'severity']
group_wait: 10s
repeat_interval: 30m
# Container image CVEs from Trivy Operator (see trivy-operator ArgoCD app)
- matchers:
- component = "trivy"
receiver: 'trivy-alerts'
group_by: ['alertname', 'namespace', 'severity']
group_wait: 2m
repeat_interval: 24h
receivers:
- name: 'null'
- name: 'default'
# Default receiver - alerts visible in UI only
- name: 'argocd-alerts'
# ArgoCD-specific receiver - alerts visible in UI only
# Future: add email/slack/webhook configuration here
- name: 'nfs-alerts'
# NFS auto-repair alerts — visible in Alertmanager UI
# Future: add webhook/email for on-call paging here
- name: 'trivy-alerts'
# Trivy Operator CVE alerts - visible in Alertmanager UI; add webhook/email when desired
inhibit_rules:
# Inhibit info alerts if warning or critical is firing
- source_matchers:
- severity = "critical"
target_matchers:
- severity =~ "warning|info"
equal: ['namespace', 'alertname']
- source_matchers:
- severity = "warning"
target_matchers:
- severity = "info"
equal: ['namespace', 'alertname']
grafana:
# Disabled: SQLite-on-NFS is unreliable across restarts (lock
# state cannot be reacquired cleanly), and Loki + Tempo are
# also disabled, so there's nothing to visualize. Prometheus
# alone is kept for metrics + alerting.
enabled: false
persistence:
enabled: true
type: pvc
existingClaim: "grafana-data-pvc"
initChownData:
enabled: false
podSecurityContext:
fsGroup: 911
runAsUser: 911
runAsGroup: 911
# Disable sidecar-based datasource provisioning
sidecar:
datasources:
enabled: false
# Mount datasources ConfigMap directly to provisioning directory
extraVolumes:
- name: datasources-volume
configMap:
name: grafana-datasources-all
extraVolumeMounts:
- name: datasources-volume
mountPath: /etc/grafana/provisioning/datasources
readOnly: true
# Source 2: Additional manifests from Git repository
- repoURL: http://git-server.cicd.svc.cluster.local/conf.git
targetRevision: master
path: f3s/prometheus/manifests
destination:
server: https://kubernetes.default.svc
namespace: monitoring
syncPolicy:
automated:
prune: true
selfHeal: true
syncOptions:
- CreateNamespace=false
- ServerSideApply=true
retry:
limit: 3
backoff:
duration: 10s
factor: 2
maxDuration: 3m
|
