7e58d758f2
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Root cause: backend deployment.yaml referenced secretKeyRef key: DB_USER and key: DB_PASSWORD, but the live secret only has MYSQL_USER and MYSQL_PASSWORD. kubectl apply reported secret/mysql-secret as "unchanged" (last-applied matched desired) so the drift was never caught — new pods got CreateContainerConfigError. Changes: - backend/deployment.yaml: DB_USER → key: MYSQL_USER, DB_PASSWORD → key: MYSQL_PASSWORD - mysql/deployment.yaml: add MYSQL_USER/MYSQL_PASSWORD env vars so the app user (scrumapp) is created if MySQL ever reinitializes from a fresh PVC - mysql/secret.yaml: remove stale commented-out block with old key names Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
88 lines
2.5 KiB
YAML
88 lines
2.5 KiB
YAML
apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: backend
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labels:
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app.kubernetes.io/name: backend
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app.kubernetes.io/component: api
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spec:
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replicas: 2
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selector:
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matchLabels:
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app.kubernetes.io/name: backend
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app.kubernetes.io/component: api
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template:
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metadata:
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labels:
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app.kubernetes.io/name: backend
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app.kubernetes.io/component: api
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spec:
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terminationGracePeriodSeconds: 15
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initContainers:
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- name: wait-for-mysql
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image: busybox:1.36
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command:
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- sh
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- -c
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- |
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echo "Waiting for MySQL TCP to be available..."
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until nc -z mysql 3306; do
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echo "MySQL not reachable yet, retrying in 3s..."
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sleep 3
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done
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echo "MySQL TCP is up. Waiting 15s for full initialization..."
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sleep 15
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echo "Proceeding to start backend."
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containers:
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- name: backend
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image: scrum-backend:latest
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imagePullPolicy: IfNotPresent
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ports:
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- containerPort: 3001
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name: http
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env:
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- name: DB_HOST
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value: mysql
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- name: DB_PORT
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value: "3306"
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- name: DB_USER
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valueFrom:
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secretKeyRef:
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name: mysql-secret
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key: MYSQL_USER
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- name: DB_PASSWORD
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valueFrom:
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secretKeyRef:
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name: mysql-secret
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key: MYSQL_PASSWORD
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- name: DB_NAME
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valueFrom:
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secretKeyRef:
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name: mysql-secret
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key: DB_NAME
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- name: PORT
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value: "3001"
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resources:
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requests:
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cpu: 100m
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memory: 128Mi # Request drives scheduling — keep low so pods fit on nodes
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limits:
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cpu: 500m
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memory: 512Mi # Limit prevents OOMKill during startup spikes
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livenessProbe:
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httpGet:
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path: /api/health
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port: http
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initialDelaySeconds: 15
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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: /api/health
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port: http
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initialDelaySeconds: 5
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periodSeconds: 5
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timeoutSeconds: 3
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failureThreshold: 5
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