使用Statefulset在k8s集群中部署etcd集群
apiVersion: v1
kind: Service
metadata:
name: etcd-headless
namespace: liulei
labels:
app: etcd
spec:
ports:
- port: 2380
name: etcd-server
- port: 2379
name: etcd-client
clusterIP: None
selector:
app: etcd
publishNotReadyAddresses: true
---
apiVersion: v1
kind: Service
metadata:
labels:
app: etcd
name: etcd-svc
namespace: liulei
spec:
ports:
- name: etcd-cluster
port: 2379
targetPort: 2379
selector:
app: etcd
sessionAffinity: None
type: NodePort
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
labels:
app: etcd
name: etcd
namespace: liulei
spec:
replicas: 3
selector:
matchLabels:
app: etcd
serviceName: etcd-headless
template:
metadata:
labels:
app: etcd
name: etcd
spec:
containers:
- env:
- name: MY_POD_NAME #当前pod名
valueFrom:
fieldRef:
fieldPath:
- name: CLUSTER_NAMESPACE #名称空间
valueFrom:
fieldRef:
fieldPath:
- name: SERVICE_NAME #内部通信的无头服务名称
value: "etcd-headless"
- name: INITIAL_CLUSTER #initial-cluster的值
value: "etcd-0=:2380,etcd-1=:2380,etcd-2=:2380"
image: -/leige24/k8s-etcd:v1
imagePullPolicy: Always
name: etcd
ports:
- containerPort: 2380
name: peer
protocol: TCP
- containerPort: 2379
name: client
protocol: TCP
resources:
requests:
memory: "1Gi"
cpu: "1000m"
limits:
memory: "1Gi"
cpu: "1000m"
volumeMounts:
- mountPath: /var/lib/etcd
name: data-etcd
updateStrategy:
type: OnDelete
volumeClaimTemplates:
- metadata:
name: data-etcd
spec:
accessModes: [ "ReadWriteMany" ]
storageClassName: storageclass-default
resources:
requests:
storage: 1Gi