towerops/k8s
Graham McIntire 3156eb19ac
fix: make Valkey service headless for StatefulSet DNS
Sentinel requires individual pod DNS names to work correctly.
Making the valkey service headless enables DNS resolution for:
- valkey-0.valkey.towerops.svc.cluster.local
- valkey-1.valkey.towerops.svc.cluster.local
- valkey-2.valkey.towerops.svc.cluster.local

This fixes CrashLoopBackOff in valkey-sentinel pods.
2026-01-24 14:06:03 -06:00
..
certificate.yaml Remove www subdomain from certificate and IngressRoute 2026-01-02 15:06:21 -06:00
deployment.yaml snmpkit overhaul and etcd 2026-01-23 16:23:57 -06:00
Dockerfile fix: use system ping command instead of raw ICMP sockets 2026-01-21 11:15:59 -06:00
etcd-statefulset.yaml fix etcd 2026-01-23 16:59:15 -06:00
ingressroute.yaml Remove www subdomain from certificate and IngressRoute 2026-01-02 15:06:21 -06:00
kustomization.yaml feat: implement multi-replica Valkey with Sentinel for high availability 2026-01-24 14:03:50 -06:00
namespace.yaml Add Kubernetes deployment manifests for towerops.net 2026-01-02 14:38:52 -06:00
poddisruptionbudget.yaml Add zero-downtime deployment configuration 2026-01-17 12:44:22 -06:00
README.md Set DEPLOY_TIMESTAMP from GitLab CI instead of pod metadata 2026-01-17 11:17:07 -06:00
service-headless.yaml cluster 2026-01-02 15:29:02 -06:00
service.yaml Add Kubernetes deployment manifests for towerops.net 2026-01-02 14:38:52 -06:00
valkey-configmap.yaml feat: implement multi-replica Valkey with Sentinel for high availability 2026-01-24 14:03:50 -06:00
valkey-sentinel-service.yaml feat: implement multi-replica Valkey with Sentinel for high availability 2026-01-24 14:03:50 -06:00
valkey-sentinel-statefulset.yaml feat: implement multi-replica Valkey with Sentinel for high availability 2026-01-24 14:03:50 -06:00
valkey-service.yaml fix: make Valkey service headless for StatefulSet DNS 2026-01-24 14:06:03 -06:00
valkey-statefulset.yaml feat: implement multi-replica Valkey with Sentinel for high availability 2026-01-24 14:03:50 -06:00

Kubernetes Deployment

Secrets Management

Secrets are managed directly in the cluster and must be created before deploying the application.

Required secrets in the towerops namespace:

  • gitlab-registry - Docker registry credentials for pulling images
  • towerops-secrets - Application secrets (RELEASE_COOKIE, SECRET_KEY_BASE)
  • towerops-db - Database connection credentials
  • towerops-aws - AWS credentials (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION)

For local development, the project root .envrc is used by direnv.

Deployment Timestamp

The application footer displays the deployment timestamp to track when the current version was deployed. This is automatically set by GitLab CI during deployment:

# GitLab CI sets this during deploy
- kubectl set env deployment/towerops DEPLOY_TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ") -n towerops

All pods in the deployment share the same timestamp (when the deployment was initiated), regardless of when individual pods were created. This is displayed in the footer as "Last deployed X ago · YYYY-MM-DD HH:MM:SS UTC".

For manual deployments without GitLab CI, set the timestamp:

kubectl set env deployment/towerops DEPLOY_TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ") -n towerops

Deploying

Apply all resources using kustomize:

kubectl apply -k k8s/

Or individually:

kubectl apply -f k8s/namespace.yaml
kubectl apply -f k8s/secret.yaml
kubectl apply -f k8s/deployment.yaml
kubectl apply -f k8s/service.yaml
kubectl apply -f k8s/service-headless.yaml
kubectl apply -f k8s/certificate.yaml
kubectl apply -f k8s/ingressroute.yaml