138 lines
3.2 KiB
YAML
138 lines
3.2 KiB
YAML
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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: nats-config
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labels:
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kiamol: ch21
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data:
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nats.conf: |
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pid_file: "/var/run/nats/nats.pid"
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http: 8222
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: message-queue
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labels:
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app: nats
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kiamol: ch21
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spec:
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selector:
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app: nats
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clusterIP: None
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ports:
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- name: client
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port: 4222
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- name: cluster
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port: 6222
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- name: monitor
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port: 8222
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- name: metrics
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port: 7777
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- name: leafnodes
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port: 7422
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- name: gateways
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port: 7522
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---
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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: nats
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labels:
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app: nats
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kiamol: ch21
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spec:
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selector:
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matchLabels:
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app: nats
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replicas: 1
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serviceName: "nats"
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template:
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metadata:
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labels:
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app: nats
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spec:
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# Common volumes for the containers
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volumes:
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- name: config-volume
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configMap:
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name: nats-config
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- name: pid
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emptyDir: {}
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# Required to be able to HUP signal and apply config reload
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# to the server without restarting the pod.
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shareProcessNamespace: true
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#################
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# #
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# NATS Server #
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# #
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#################
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terminationGracePeriodSeconds: 60
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containers:
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- name: nats
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image: nats:2.1.0-alpine3.10
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ports:
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- containerPort: 4222
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name: client
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hostPort: 4222
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- containerPort: 7422
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name: leafnodes
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hostPort: 7422
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- containerPort: 6222
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name: cluster
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- containerPort: 8222
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name: monitor
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- containerPort: 7777
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name: metrics
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command:
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- "nats-server"
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- "--config"
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- "/etc/nats-config/nats.conf"
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# Required to be able to define an environment variable
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# that refers to other environment variables. This env var
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# is later used as part of the configuration file.
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env:
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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: CLUSTER_ADVERTISE
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value: $(POD_NAME).nats.$(POD_NAMESPACE).svc
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volumeMounts:
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- name: config-volume
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mountPath: /etc/nats-config
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- name: pid
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mountPath: /var/run/nats
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# Liveness/Readiness probes against the monitoring
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#
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livenessProbe:
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httpGet:
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path: /
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port: 8222
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initialDelaySeconds: 10
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timeoutSeconds: 5
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readinessProbe:
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httpGet:
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path: /
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port: 8222
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initialDelaySeconds: 10
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timeoutSeconds: 5
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# Gracefully stop NATS Server on pod deletion or image upgrade.
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#
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lifecycle:
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preStop:
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exec:
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# Using the alpine based NATS image, we add an extra sleep that is
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# the same amount as the terminationGracePeriodSeconds to allow
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# the NATS Server to gracefully terminate the client connections.
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#
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command: ["/bin/sh", "-c", "/nats-server -sl=ldm=/var/run/nats/nats.pid && /bin/sleep 60"]
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