zookeeper和k8s_Kubernetes集群中部署ZooKeeper集群
Kubernetes集群中部署ZooKeeper集群有两种方式，一是基于kubernetes的镜像kubernetes-zookeeper，另外一种是基于原生的镜像zookeeper，基于kubernetes-zookeeper的部署可以参考kubernetes官网文档 https://kubernetes.io/docs/tutorials/stateful-application/zookee
Kubernetes集群中部署ZooKeeper集群有两种方式，一是基于kubernetes的镜像kubernetes-zookeeper，另外一种是基于原生的镜像zookeeper，基于kubernetes-zookeeper的部署可以参考kubernetes官网文档 https://kubernetes.io/docs/tutorials/stateful-application/zookeeper/ ，阿汤博客今天主要介绍下基于原生镜像的部署，直接查看zookeeper.yml配置文件(未配置数据持久化)。
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: zoo1
namespace: zyts
spec:
selector:
matchLabels:
app: zoo1
serviceName: zoo1-service
replicas: 1
template:
metadata:
labels:
app: zoo1
spec:
restartPolicy: Always
containers:
- name: zoo1
image: zookeeper:3.4.14
imagePullPolicy: IfNotPresent
ports:
- containerPort: 2181
- containerPort: 2888
- containerPort: 3888
protocol: TCP
resources:
limits:
cpu: 1000m
requests:
cpu: 100m
env:
- name: ZOO_MY_ID
value: "1"
- name: ZOO_SERVERS
value: server.1=zoo1-0.zoo1-service.zyts.svc.cluster.local:2888:3888 server.2=zoo2-0.zoo2-service.zyts.svc.cluster.local:2888:3888 server.3=zoo3-0.zoo3-service.zyts.svc.cluster.local:2888:3888
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: zoo2
namespace: zyts
spec:
selector:
matchLabels:
app: zoo2
serviceName: zoo2-service
replicas: 1
template:
metadata:
labels:
app: zoo2
spec:
restartPolicy: Always
containers:
- name: zoo2
image: zookeeper:3.4.14
imagePullPolicy: IfNotPresent
ports:
- containerPort: 2181
- containerPort: 2888
- containerPort: 3888
protocol: TCP
resources:
limits:
cpu: 1000m
requests:
cpu: 100m
env:
- name: ZOO_MY_ID
value: "2"
- name: ZOO_SERVERS
value: server.1=zoo1-0.zoo1-service.zyts.svc.cluster.local:2888:3888 server.2=zoo2-0.zoo2-service.zyts.svc.cluster.local:2888:3888 server.3=zoo3-0.zoo3-service.zyts.svc.cluster.local:2888:3888
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: zoo3
namespace: zyts
spec:
selector:
matchLabels:
app: zoo3
serviceName: zoo3-service
replicas: 1
template:
metadata:
labels:
app: zoo3
spec:
restartPolicy: Always
containers:
- name: zoo3
image: zookeeper:3.4.14
imagePullPolicy: IfNotPresent
ports:
- containerPort: 2181
- containerPort: 2888
- containerPort: 3888
protocol: TCP
resources:
limits:
cpu: 1000m
requests:
cpu: 100m
env:
- name: ZOO_MY_ID
value: "3"
- name: ZOO_SERVERS
value: server.1=zoo1-0.zoo1-service.zyts.svc.cluster.local:2888:3888 server.2=zoo2-0.zoo2-service.zyts.svc.cluster.local:2888:3888 server.3=zoo3-0.zoo3-service.zyts.svc.cluster.local:2888:3888
---
apiVersion: v1
kind: Service
metadata:
name: zoo1-service
namespace: zyts
spec:
ports:
- protocol: TCP
port: 2181
targetPort: 2181
name: client
- protocol: TCP
port: 2888
targetPort: 2888
name: leader
- protocol: TCP
port: 3888
targetPort: 3888
name: leader-election
selector:
app: zoo1
---
apiVersion: v1
kind: Service
metadata:
name: zoo2-service
namespace: zyts
spec:
ports:
- protocol: TCP
port: 2181
targetPort: 2181
name: client
- protocol: TCP
port: 2888
targetPort: 2888
name: leader
- protocol: TCP
port: 3888
targetPort: 3888
name: leader-election
selector:
app: zoo2
---
apiVersion: v1
kind: Service
metadata:
name: zoo3-service
namespace: zyts
spec:
ports:
- protocol: TCP
port: 2181
targetPort: 2181
name: client
- protocol: TCP
port: 2888
targetPort: 2888
name: leader
- protocol: TCP
port: 3888
targetPort: 3888
name: leader-election
selector:
app: zoo3
执行
kubectl apply -f zookeeper.yml
查看部署情况：
集群内部服务调用zookeeper地址：zoo1-0.zoo1-service.zyts.svc.cluster.local:2181,zoo2-0.zoo2-service.zyts.svc.cluster.local:2181,zoo3-0.zoo3-service.zyts.svc.cluster.local:2181
登录任意一个zookeeper pod，测试集群是否可用。
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