Zookeeper搭建集群方法

1 

/path/to/zookeeper/conf/zoo1.cfg

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zk2/data
dataLogDir=/tmp/zk2/log
clientPort=2182
server.1=localhost:2888:3888
server.2=localhost:2899:3899
server.3=localhost:2877:3877

ip:master通信接口:master挂了选举接口

echo 1 > /tmp/zk1/data/myid
echo 2 > /tmp/zk2/data/myid
echo 3 > /tmp/zk3/data/myid

bin/zkServer.sh start conf/zoo1.cfg
bin/zkServer.sh start conf/zoo2.cfg
bin/zkServer.sh start conf/zoo3.cfg

bin/zkServer.sh status conf/zoo3.cfg

bin/zkServer.sh status conf/zoo3.cfg

使用客户端进行连接

 bin/zkCli.sh -timeout 5000 -server localhost:2183

 三个机器如果挂了两个 程序就会失败了

根据实际情况得出了结论

netstat -apn|grep 端口 ，可以查看对应的进程号

 service 和systemctl区别

3  查看系统运行时路径的log

/root/soft/zookeeper/apache-zookeeper-3.5.5-bin/logs 日志路径
zookeeper-root-server-VM_0_10_centos.out

可以通过如下文字进行修改，只改两个配置文件即可

 https://www.cnblogs.com/mengHeJiuQIan/p/11169476.html

4 zookeeper 集群搭建后链接整合springboot用的时 actuor

实例代码

import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.ZooDefs;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class ZkService {

    public void init(){
        CuratorFramework client = CuratorFrameworkFactory.builder().connectString("aaaa:2181,aaaa:2182,aaaa:2183")
                .sessionTimeoutMs(10000).namespace("admin").retryPolicy(new ExponentialBackoffRetry(1000,5))
                 .build();
        client.start();
        try {
            if(client.checkExists().forPath("/savestore")==null){
                client.create().creatingParentContainersIfNeeded().withMode(CreateMode.PERSISTENT)
                        .withACL(ZooDefs.Ids.OPEN_ACL_UNSAFE).forPath("/savestore");
            }
            System.out.println("已经成功初始化了");
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}

        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>4.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.11</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>4.0.0</version>
        </dependency>