部署zookeeper

zookeeper(zk集群)

zookeeper时Dubbo微服务集群的注册中心
它的高可用机制和K8S的etcd集群一致
Java编写

主机名 角色 ip

rstx4-201.rongbiz.cn 	k8s代理节点1，zk1 	192.168.1.201
rstx4-202.rongbiz.cn 	k8s代理节点2，zk2 	192.168.1.202
rstx4-203.rongbiz.cn 	k8s运算节点1，zk3 	192.168.1.203
rstx4-204.rongbiz.cn 	k8s运算节点2，jenkins 	192.168.1.204
rstx4-53.rongbiz.cn 	k8s运维节点(docker仓库) 	192.168.1.53

安装jdk1.8（3台zk角色主机）

mkdir /usr/java
tar xf jdk-8u221-linux-x64.tar.gz -C /usr/java/
ln -s /usr/java/jdk1.8.0_221 /usr/java/jdk

vim /etc/profile

export JAVA_HOME=/usr/java/jdk
export PATH=$JAVA_HOME/bin:$JAVA_HOME/bin:$PATH
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar

安装zookeeper（3台zk角色主机）

tar xf zookeeper-3.4.14.tar.gz -C /opt/
ln -s /opt/zookeeper-3.4.14 /opt/zookeeper
mkdir -pv /data/zookeeper/data /data/zookeeper/logs

vim /opt/zookeeper/conf/zoo.cfg

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/data/zookeeper/data
dataLogDir=/data/zookeeper/logs
clientPort=2181
server.1=zk1.rongbiz.cn:2888:3888
server.2=zk2.rongbiz.cn:2888:3888
server.3=zk3.rongbiz.cn:2888:3888

注意：各节点zk配置相同

dns解析

zk1                A    192.168.1.201
zk2                A    192.168.1.202
zk3                A    192.168.1.203

myid
rstx4-11.rongbiz.cn上：

/data/zookeeper/data/myid
1

rstx4-12.rongbiz.cn上：

/data/zookeeper/data/myid

2

rstx4-21.rongbiz.cn上：

/data/zookeeper/data/myid

3

依次启动zookeeper

/opt/zookeeper/bin/zkServer.sh start

查看server状态

/opt/zookeeper/bin/zkServer.sh status

[root@rstx4-201 zookeeper]# /opt/zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Mode: follower

[root@rstx4-202 src]# /opt/zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Mode: leader

[root@rstx4-203 src]# /opt/zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Mode: follower

登录

/opt/zookeeper/bin/zkCli.sh -server localhost:2181