Lab16#4065
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1sarmatt wants to merge 25 commits intoinno-devops-labs:masterfrom
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Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
Signed-off-by: Dmitrii Creed <creeed22@gmail.com>
- Add prometheus-client to requirements.txt - Instrument app.py with Counter, Histogram, Gauge metrics - Add /metrics endpoint (Prometheus text format) - Add Prometheus service to docker-compose.yml (port 9090, 15d retention) - Create prometheus/prometheus.yml with scrape configs for app/loki/grafana - Fix app-python healthcheck to use python urllib instead of wget - Add LAB08.md documentation with PromQL examples and RED method dashboards
…lling updates - Add k8s/deployment.yml: 3 replicas, resource limits, liveness/readiness probes, RollingUpdate strategy - Add k8s/service.yml: NodePort service on port 30080 - Add k8s/README.md: architecture, evidence, operations, production considerations - Demonstrated: scale to 5 replicas, rolling update, rollback
- Add k8s/devops-info-service/ Helm chart with templated deployment and service - values.yaml with all configurable parameters - values-dev.yaml (1 replica, relaxed resources) and values-prod.yaml (5 replicas) - _helpers.tpl with fullname, labels, selectorLabels helpers - Pre-install and post-install hooks with hook-delete-policy: hook-succeeded - k8s/HELM.md documentation with installation evidence
…nd nginx-app - Add k8s/common-lib/ library chart with shared name/labels helpers - Update devops-info-service to use common-lib as dependency (v0.2.0) - Add k8s/nginx-app/ second application chart using common-lib - Both charts lint clean and deploy successfully - Update HELM.md with bonus section
- Add templates/secrets.yaml to Helm chart (K8s Secret from values) - Add templates/serviceaccount.yaml for Vault K8s auth - Update deployment.yaml: envFrom secretRef + Vault agent annotations - Add Vault agent template annotation (renders .env format to /vault/secrets/config) - Add named template devops-info-service.envVars in _helpers.tpl (bonus) - Add k8s/SECRETS.md documentation (no real secrets committed)
- Add visits counter to app.py with /visits endpoint (persists to /data/visits) - Add docker-compose.yml app-data volume for local persistence - Add k8s/devops-info-service/templates/configmap.yaml (file + env ConfigMaps) - Add k8s/devops-info-service/templates/pvc.yaml (100Mi RWO) - Update deployment.yaml: configmap volume mount, envFrom configMapRef, PVC mount - Add checksum/config annotation for hot reload on helm upgrade - Add k8s/CONFIGMAPS.md documentation - Verified: visits persist across pod deletion (8 visits survived restart)
- Add k8s/argocd/application.yaml (default namespace, manual sync) - Add k8s/argocd/application-dev.yaml (dev namespace, auto-sync + selfHeal) - Add k8s/argocd/application-prod.yaml (prod namespace, manual sync) - Add k8s/argocd/applicationset.yaml (bonus: List generator for dev+prod)
- Add templates/rollout.yaml (canary + blueGreen strategies, toggled by values) - Add templates/service-preview.yaml (blue-green preview service) - Add templates/analysis-template.yaml (bonus: web health check analysis) - Update templates/deployment.yaml (disabled when rollout.enabled=true) - Add values-canary.yaml and values-bluegreen.yaml - Add rollout.enabled/strategy to values.yaml - Add k8s/ROLLOUTS.md documentation - Tested: canary 20%→pause→promote→abort→retry→full promote - Tested: blue-green preview→promote (instant switch)
- Add templates/statefulset.yaml (volumeClaimTemplates, headless serviceName, partition update) - Add templates/service-headless.yaml (clusterIP: None for DNS per pod) - Add values-statefulset.yaml (3 replicas, 100Mi per pod) - Update deployment.yaml (disabled when statefulset.enabled=true) - Update pvc.yaml (disabled when statefulset.enabled=true) - Add statefulset.enabled/partition to values.yaml - Add k8s/STATEFULSET.md documentation - Verified: 3 pods with ordered names (-0,-1,-2), 3 separate PVCs - Verified: per-pod visit counts isolated (18, 21, 13) - Verified: data survives pod deletion (18 visits preserved) - Bonus: partitioned rolling update (partition=2)
- Install kube-prometheus-stack in monitoring namespace (all 6 pods running) - Add k8s/init-containers/init-demo.yaml (download + wait-for-service init containers) - Add templates/servicemonitor.yaml (bonus: scrape /metrics via ServiceMonitor CRD) - Add templates/service-headless.yaml port name for ServiceMonitor - Add serviceMonitor.enabled and initContainers.enabled to values.yaml - Add k8s/MONITORING.md with Grafana screenshots (gr1-gr4.png) - Add k8s/docs/gr1-gr4.png Grafana dashboard screenshots
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k8s/MONITORING.mdcomplete