基于 Docker 安装 Zookeeper

其他 2020-01-17 10:27:53 阅读次数: 0

文章目录


Zookeeper 部署有三种方式，单机模式、集群模式、伪集群模式，以下采用 Docker 的方式部署

注意： 集群为大于等于3个奇数，如 3、5、7,不宜太多，集群机器多了选举和数据同步耗时长，不稳定。

单机模式

docker-compose.yml

version: '2.0'

services:
    zoo1:
        image: zookeeper
        restart: always
        hostname: zoo1
        ports:
            - 2181:2181
        environment:
            ZOO_MY_ID: 1
            ZOO_SERVERS: server.1=zoo1:2888:3888

验证是否安装成功

  • 以交互的方式进入容器
docker exec -it zookeeper_zoo1_1 /bin/bash
  • 使用客户端连接到服务端
bash-4.3# ./bin/zkCli.sh -server 192.168.75.130:2181
Connecting to 192.168.75.130:2181
2017-11-09 07:45:58,365 [myid:] - INFO  [main:Environment@100] - Client environment:zookeeper.version=3.4.10-39d3a4f269333c922ed3db283be479f9deacaa0f, built on 03/23/2017 10:13 GMT
2017-11-09 07:45:58,374 [myid:] - INFO  [main:Environment@100] - Client environment:host.name=zoo1
2017-11-09 07:45:58,374 [myid:] - INFO  [main:Environment@100] - Client environment:java.version=1.8.0_131
2017-11-09 07:45:58,380 [myid:] - INFO  [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2017-11-09 07:45:58,381 [myid:] - INFO  [main:Environment@100] - Client environment:java.home=/usr/lib/jvm/java-1.8-openjdk/jre
2017-11-09 07:45:58,381 [myid:] - INFO  [main:Environment@100] - Client environment:java.class.path=/zookeeper-3.4.10/bin/../build/classes:/zookeeper-3.4.10/bin/../build/lib/*.jar:/zookeeper-3.4.10/bin/../lib/slf4j-log4j12-1.6.1.jar:/zookeeper-3.4.10/bin/../lib/slf4j-api-1.6.1.jar:/zookeeper-3.4.10/bin/../lib/netty-3.10.5.Final.jar:/zookeeper-3.4.10/bin/../lib/log4j-1.2.16.jar:/zookeeper-3.4.10/bin/../lib/jline-0.9.94.jar:/zookeeper-3.4.10/bin/../zookeeper-3.4.10.jar:/zookeeper-3.4.10/bin/../src/java/lib/*.jar:/conf:
2017-11-09 07:45:58,381 [myid:] - INFO  [main:Environment@100] - Client environment:java.library.path=/usr/lib/jvm/java-1.8-openjdk/jre/lib/amd64/server:/usr/lib/jvm/java-1.8-openjdk/jre/lib/amd64:/usr/lib/jvm/java-1.8-openjdk/jre/../lib/amd64:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2017-11-09 07:45:58,381 [myid:] - INFO  [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2017-11-09 07:45:58,381 [myid:] - INFO  [main:Environment@100] - Client environment:java.compiler=<NA>
2017-11-09 07:45:58,381 [myid:] - INFO  [main:Environment@100] - Client environment:os.name=Linux
2017-11-09 07:45:58,382 [myid:] - INFO  [main:Environment@100] - Client environment:os.arch=amd64
2017-11-09 07:45:58,382 [myid:] - INFO  [main:Environment@100] - Client environment:os.version=4.4.0-98-generic
2017-11-09 07:45:58,386 [myid:] - INFO  [main:Environment@100] - Client environment:user.name=root
2017-11-09 07:45:58,386 [myid:] - INFO  [main:Environment@100] - Client environment:user.home=/root
2017-11-09 07:45:58,386 [myid:] - INFO  [main:Environment@100] - Client environment:user.dir=/zookeeper-3.4.10
2017-11-09 07:45:58,389 [myid:] - INFO  [main:ZooKeeper@438] - Initiating client connection, connectString=192.168.75.130:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@3eb07fd3
2017-11-09 07:45:58,428 [myid:] - INFO  [main-SendThread(192.168.75.130:2181):ClientCnxn$SendThread@1032] - Opening socket connection to server 192.168.75.130/192.168.75.130:2181. Will not attempt to authenticate using SASL (unknown error)
Welcome to ZooKeeper!
JLine support is enabled
2017-11-09 07:45:58,529 [myid:] - INFO  [main-SendThread(192.168.75.130:2181):ClientCnxn$SendThread@876] - Socket connection established to 192.168.75.130/192.168.75.130:2181, initiating session
[zk: 192.168.75.130:2181(CONNECTING) 0] 2017-11-09 07:45:58,573 [myid:] - INFO  [main-SendThread(192.168.75.130:2181):ClientCnxn$SendThread@1299] - Session establishment complete on server 192.168.75.130/192.168.75.130:2181, sessionid = 0x15f9fbc12ec0000, negotiated timeout = 30000

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
  • 使用服务端工具检查服务器状态
bash-4.3# ./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: standalone

集群模式

准备 3 台 Ubuntu Server 系统，并分别配置 Zookeeper

第一台主机

  • docker-compose.yml
version: '2.0'
services:
    zoo1:
        image: zookeeper
        restart: always
        environment:
            ZOO_MY_ID: 1
            ZOO_SERVERS: server.1=192.168.75.130:2888:3888 server.2=192.168.75.134:2888:3888 server.3=192.168.75.135:2888:3888
        network_mode: host
  • 验证测试
root@UbuntuBase:/usr/local/docker/zookeeper# docker exec -it zookeeper_zoo1_1 /bin/bash
bash-4.3# ./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: leader

第二台主机

  • docker-compose.yml
version: '2.0'
services:
    zoo2:
        image: zookeeper
        restart: always
        environment:
            ZOO_MY_ID: 2
            ZOO_SERVERS: server.1=192.168.75.130:2888:3888 server.2=192.168.75.134:2888:3888 server.3=192.168.75.135:2888:3888
        network_mode: host
  • 验证测试
root@UbuntuBase:/usr/local/docker/zookeeper# docker exec -it zookeeper_zoo2_1 /bin/bash
bash-4.3# ./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower

第三台主机

  • docker-compose.yml
version: '2.0'
services:
    zoo3:
        image: zookeeper
        restart: always
        environment:
            ZOO_MY_ID: 3
            ZOO_SERVERS: server.1=192.168.75.130:2888:3888 server.2=192.168.75.134:2888:3888 server.3=192.168.75.135:2888:3888
        network_mode: host
  • 验证测试
root@UbuntuBase:/usr/local/docker/zookeeper# docker exec -it zookeeper_zoo3_1 /bin/bash
bash-4.3# ./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower

伪集群模式

  • docker-compose.yml
version: '2.0'
services:
    zoo1:
        image: zookeeper
        restart: always
        hostname: zoo1
        ports:
            - 2181:2181
        environment:
            ZOO_MY_ID: 1
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888

    zoo2:
        image: zookeeper
        restart: always
        hostname: zoo2
        ports:
            - 2182:2181
        environment:
            ZOO_MY_ID: 2
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888

    zoo3:
        image: zookeeper
        restart: always
        hostname: zoo3
        ports:
            - 2183:2181
        environment:
            ZOO_MY_ID: 3
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888
  • 验证是否安装成功(分别以交互方式进入容器查看)
docker exec -it zookeeper_zoo1_1 /bin/bash

docker exec -it zookeeper_zoo2_1 /bin/bash

docker exec -it zookeeper_zoo3_1 /bin/bash
  • 使用服务端工具检查服务器状态
root@UbuntuBase:/usr/local/docker/zookeeper# docker exec -it zookeeper_zoo1_1 /bin/bash
bash-4.3# ./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower

root@UbuntuBase:/usr/local/docker/zookeeper# docker exec -it zookeeper_zoo2_1 /bin/bash
bash-4.3# ./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower

root@UbuntuBase:/usr/local/docker/zookeeper# docker exec -it zookeeper_zoo3_1 /bin/bash
bash-4.3# ./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower
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