Dokcer 一键快速部署Zookeeper
首先要具备Docker环境,当前实验环境：
- Mac
- Docker: 18.09.2
一、Zookeeper单节点模式
- docker search zookeeper
- docker pull zookeeper
- 创建一个数据挂载目录： ~/docker/zookeeper/data，具体自行创建
- cd ~/docker/zookeeper
- docker run -d -e TZ=”Asia/Shanghai” -p 2181:2181 -v $PWD/data:/data –name zookeeper –restart always zookeeper
- docker ps -a ,能够看到zookeeper是处于【Up】的状态
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f293af3f118a zookeeper "/docker-entrypoint.…" 3 hours ago Up 2 hours 2888/tcp, 3888/tcp, 0.0.0.0:2181->2181/tcp, 8080/tcp zookeeper
- 测试客户端连接：docker run -it –rm –link zookeeper:zookeeper zookeeper zkCli.sh -server zookeeper
- 进入后能够进行:ls /,create,get, set,delete等操作
[zk: zookeeper(CONNECTED) 2] ls /
[zookeeper]
[zk: zookeeper(CONNECTED) 3] create /zktest
Created /zktest
[zk: zookeeper(CONNECTED) 4] ls /
[zktest, zookeeper]
[zk: zookeeper(CONNECTED) 5] get /zktest
null
[zk: zookeeper(CONNECTED) 6] set /zktest data1
[zk: zookeeper(CONNECTED) 7] get /zktest
data1
[zk: zookeeper(CONNECTED) 8] ls /
[zktest, zookeeper]
[zk: zookeeper(CONNECTED) 9] get /zktest
data1
[zk: zookeeper(CONNECTED) 10] set /zktest data2
[zk: zookeeper(CONNECTED) 11] create /zktest/innerpath data1
Created /zktest/innerpath
[zk: zookeeper(CONNECTED) 12] create /zktest/innerpath data2
Node already exists: /zktest/innerpath
[zk: zookeeper(CONNECTED) 13] get /zktest/innerpath
data1
[zk: zookeeper(CONNECTED) 14] set /zktest/innerpath data2
[zk: zookeeper(CONNECTED) 15] set /zktest/innerpath data3
[zk: zookeeper(CONNECTED) 16] create /zktest/innerpath2
Created /zktest/innerpath2
[zk: zookeeper(CONNECTED) 17] create /zktest/innerpath3
Created /zktest/innerpath3
[zk: zookeeper(CONNECTED) 18] set /zktest/innerpath3 data3
[zk: zookeeper(CONNECTED) 19] get /zktest/innerpath3
data3
[zk: zookeeper(CONNECTED) 20] set /zktest/innerpath2 data2
[zk: zookeeper(CONNECTED) 21] get /zktest/innerpath3
data3
[zk: zookeeper(CONNECTED) 22] set /zktest/innerpath2 data2
[zk: zookeeper(CONNECTED) 23] create /zktest/innerpath4
Created /zktest/innerpath4
二、Zookeeper集群模式
使用docker-compose进行一键编排
- 选择一个目录：cd ~/docker/zookeeper
- vi docker-compose.yml
- 填充以下脚本：
# zk集群的通信网络zk-net
networks:
zk-net:
name: zk-net
# 配置zk集群的
services:
zk1:
image: zookeeper
hostname: zk1
container_name: zk1
# 配置docker container和宿主机的端口映射
ports:
- 2181:2181
- 8081:8080
# 配置docker container的环境变量
environment:
# 当前zk实例的id,注意唯一性
ZOO_MY_ID: 1
# 整个zk集群的机器、端口列表
ZOO_SERVERS: server.1=0.0.0.0:2888:3888;2181 server.2=zk2:2888:3888;2181 server.3=zk3:2888:3888;2181
# 将docker container上的路径挂载到宿主机上 实现宿主机和docker container的数据共享
volumes:
- ./zk1/data:/data
- ./zk1/datalog:/datalog
# 当前docker container加入名为zk-net的隔离网络
networks:
- zk-net
zk2:
image: zookeeper
hostname: zk2
container_name: zk2
ports:
- 2182:2181
- 8082:8080
environment:
ZOO_MY_ID: 2
ZOO_SERVERS: server.1=zk1:2888:3888;2181 server.2=0.0.0.0:2888:3888;2181 server.3=zk3:2888:3888;2181
volumes:
- ./zk2/data:/data
- ./zk2/datalog:/datalog
networks:
- zk-net
zk3:
image: zookeeper
hostname: zk3
container_name: zk3
ports:
- 2183:2181
- 8083:8080
environment:
ZOO_MY_ID: 3
ZOO_SERVERS: server.1=zk1:2888:3888;2181 server.2=zk2:2888:3888;2181 server.3=0.0.0.0:2888:3888;2181
volumes:
- ./zk3/data:/data
- ./zk3/datalog:/datalog
networks:
- zk-net
- 脚本保存后，在当前目录执行：docker-compose up -d ,将后台启动三个zk节点
:zookeeper xxx$ docker-compose up -d
Creating network "zookeeper_default" with the default driver
Creating zk3 ... done
Creating zk2 ... done
Creating zk1 ... done
- docker-compose ps 或者 docker ps -a 两个命令都能看到三个节点顺利启动
- docker exec -it zk1 /bin/bash 进入zk1节点
- 能够正常进行create ls delete get set等操作
- 查看建立的隔离网络:docker network ls
xxx:zookeeper xxx$ docker network ls
NETWORK ID NAME DRIVER SCOPE
d1d3225ba249 bridge bridge local
2735294840d2 elasticsearch_esnet bridge local
16ba5525c054 host host local
c6e9d4238f9b none null local
1bcc311baa3b zk-net bridge local -----> Here
- 查看某一节点的配置：docker inspect zk1
三、其他基础命令
# 停止docker-compose服务 不删除容器
docker-compose stop
# 停止docker-compose服务 删除容器
docker-compose down
# 启动docker-compose服务
docker-compose start
# 重启docker-compose服务
docker-compose restart
