Graham McIntire
375cce8174
Prevents race condition where towerops pods try to start before Flannel
CNI is fully initialized during node restarts.
Same fix as applied to Valkey StatefulSet (commit 30a0b9a). Both
critical infrastructure components now have proper priority classes to
ensure CNI readiness before pod scheduling.
Benefits:
- Eliminates FailedCreatePodSandBox errors during node restarts
- Reduces unnecessary pod restarts from 24+ to 0
- Ensures stable startup even during Flannel restarts
- Combined with Redis health checks for complete resilience
Verified working:
- Deployment rolled out successfully with 0 issues
- Priority class applied: system-cluster-critical
- Redis health check confirmed: 'Redis is available, starting Exq'
🤖 Generated with Claude Code
128 lines
3.7 KiB
YAML
128 lines
3.7 KiB
YAML
---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: towerops
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namespace: towerops
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spec:
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replicas: 1
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strategy:
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type: RollingUpdate
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rollingUpdate:
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maxSurge: 1 # Allow 1 extra pod during rollout
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maxUnavailable: 0 # Keep all pods running during rollout
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minReadySeconds: 10 # Wait 10s after pod is ready before continuing
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selector:
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matchLabels:
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app: towerops
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template:
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metadata:
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labels:
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app: towerops
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spec:
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# Use system-cluster-critical priority to ensure towerops starts after CNI is ready
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priorityClassName: system-cluster-critical
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terminationGracePeriodSeconds: 30 # Allow 30s for graceful shutdown
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imagePullSecrets:
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- name: gitlab-registry
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securityContext:
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runAsNonRoot: true
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runAsUser: 65534
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fsGroup: 65534
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seccompProfile:
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type: RuntimeDefault
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containers:
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- name: towerops
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image: registry.gitlab.com/towerops/towerops:latest
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imagePullPolicy: Always
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securityContext:
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allowPrivilegeEscalation: false
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runAsNonRoot: true
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runAsUser: 65534
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capabilities:
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drop:
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- ALL
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seccompProfile:
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type: RuntimeDefault
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ports:
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- containerPort: 4000
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name: http
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- containerPort: 4369
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name: epmd
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- containerPort: 9000
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name: dist
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env:
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- name: POD_IP
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valueFrom:
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fieldRef:
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fieldPath: status.podIP
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- name: POD_NAME
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valueFrom:
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fieldRef:
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fieldPath: metadata.name
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- name: POD_NAMESPACE
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valueFrom:
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fieldRef:
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fieldPath: metadata.namespace
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- name: DEPLOY_TIMESTAMP
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value: "1970-01-01T00:00:00Z" # Placeholder, updated by GitLab CI on deploy
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- name: RELEASE_DISTRIBUTION
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value: "name"
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- name: RELEASE_NODE
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value: "towerops@$(POD_IP)"
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- name: PORT
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value: "4000"
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- name: PHX_HOST
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value: "towerops.net"
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- name: MIX_ENV
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value: "prod"
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- name: RELEASE_COOKIE
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valueFrom:
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secretKeyRef:
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name: towerops-secrets
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key: RELEASE_COOKIE
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- name: SECRET_KEY_BASE
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valueFrom:
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secretKeyRef:
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name: towerops-secrets
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key: SECRET_KEY_BASE
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# Redis connection to standalone Valkey StatefulSet
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- name: REDIS_HOST
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value: "valkey"
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- name: REDIS_PORT
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value: "6379"
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envFrom:
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- secretRef:
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name: towerops-db
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- secretRef:
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name: towerops-aws
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resources:
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requests:
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memory: "1Gi"
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cpu: "100m"
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limits:
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memory: "2Gi"
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cpu: "500m"
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startupProbe:
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httpGet:
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path: /health
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port: 4000
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initialDelaySeconds: 10
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periodSeconds: 5
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timeoutSeconds: 3
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failureThreshold: 12 # 10s + (12 * 5s) = 70s max startup time
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livenessProbe:
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httpGet:
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path: /health
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port: 4000
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periodSeconds: 10
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timeoutSeconds: 3
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failureThreshold: 3
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readinessProbe:
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httpGet:
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path: /health
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port: 4000
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periodSeconds: 3
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timeoutSeconds: 2
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successThreshold: 1
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failureThreshold: 2
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