245301450c
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During rolling updates with the default maxSurge=1, an extra surge pod was created temporarily (3 pods instead of 2), causing all 3 nodes to report "Insufficient CPU" and delaying scheduling past the Jenkins rollout timeout. With maxSurge=0 / maxUnavailable=1, one old pod terminates first before a new one starts — pod count stays at 2 throughout, no extra CPU needed. Also increase Jenkins rollout timeout from 300s to 600s as a safety net for CPU-constrained nodes that may still need extra scheduling time. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
64 lines
1.7 KiB
YAML
64 lines
1.7 KiB
YAML
apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: frontend
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labels:
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app.kubernetes.io/name: frontend
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app.kubernetes.io/component: web
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spec:
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replicas: 2
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strategy:
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type: RollingUpdate
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rollingUpdate:
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maxSurge: 0 # Don't create extra pods during update — avoids CPU pressure
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maxUnavailable: 1 # Terminate one old pod first, then start new one
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selector:
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matchLabels:
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app.kubernetes.io/name: frontend
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app.kubernetes.io/component: web
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template:
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metadata:
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labels:
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app.kubernetes.io/name: frontend
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app.kubernetes.io/component: web
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spec:
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containers:
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- name: frontend
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image: scrum-frontend:latest
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imagePullPolicy: IfNotPresent
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ports:
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- containerPort: 80
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name: http
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volumeMounts:
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- name: nginx-config
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mountPath: /etc/nginx/conf.d/default.conf
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subPath: default.conf
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readOnly: true
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resources:
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requests:
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cpu: 50m
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memory: 64Mi
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limits:
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cpu: 200m
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memory: 128Mi
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livenessProbe:
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httpGet:
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path: /
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port: http
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initialDelaySeconds: 10
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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: /
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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: 3
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volumes:
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- name: nginx-config
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configMap:
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name: frontend-nginx-config
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