48 lines
1.3 KiB
YAML
48 lines
1.3 KiB
YAML
apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: redis-sentinel
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namespace: redis
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labels:
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app: redis-sentinel
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spec:
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replicas: 3
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selector:
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matchLabels:
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app: redis-sentinel
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template:
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metadata:
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labels:
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app: redis-sentinel
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spec:
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# Init container to copy the sentinel.conf from the ConfigMap to a writable emptyDir volume.
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initContainers:
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- name: copy-sentinel-config
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image: busybox
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command: ['sh', '-c', 'cp /config/sentinel.conf /writable/']
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volumeMounts:
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- name: sentinel-config-readonly
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mountPath: /config
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- name: sentinel-config
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mountPath: /writable
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containers:
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- name: redis-sentinel
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image: redis:6.2-alpine
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ports:
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- containerPort: 26379
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name: sentinel
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command:
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- "redis-sentinel"
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- "/etc/redis/sentinel.conf"
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volumeMounts:
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- name: sentinel-config
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mountPath: /etc/redis # this volume is now writable
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volumes:
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# Mount the ConfigMap as a read-only volume for the init container
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- name: sentinel-config-readonly
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configMap:
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name: redis-sentinel-config
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# EmptyDir volume to hold the writable config file
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- name: sentinel-config
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emptyDir: {}
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