CentOS 7 使用Docker方式搭建Zookeeper 3.6.1 三节点集群，并配置zookeeper-ui可视化管理界面

开整！！

第一步，准备3台虚拟机，系统为CentOS 7，如下

IP	角色
172.16.31.191	zookeeper-1
172.16.31.192	zookeeper-2
172.16.31.193	zookeeper-3

第二步，在虚拟机上装好docker并启动（不会使用 docker 的话请先百度了解一下），3台虚拟机都要

第三步，创建存储目录 /usr/local/docker/zookeeper，3台虚拟机都要，如下

mkdir /usr/local/docker/zookeeper

并创建相关挂载目录，3台虚拟机都要，如下

mkdir /usr/local/docker/zookeeper/config
mkdir /usr/local/docker/zookeeper/data

第四步，在 /usr/local/docker/zookeeper/config 目录下新建 zoo.cfg 配置文件，3台虚拟机都要，内容一样，如下

vim /usr/local/docker/zookeeper/config/zoo.cfg

zoo.cfg

clientPort=2181
dataDir=/data
dataLogDir=/data/log
tickTime=2000
initLimit=5
syncLimit=2
autopurge.snapRetainCount=3
autopurge.purgeInterval=0
maxClientCnxns=60
4lw.commands.whitelist=*
server.1=172.16.31.191:2888:3888
server.2=172.16.31.192:2888:3888
server.3=172.16.31.193:2888:3888

另外，还要在 /usr/local/docker/zookeeper/data 目录下新建 myid 配置文件，里面的内容编号不能重复，3台虚拟机都要，如下

172.16.31.191

# 创建 myid 配置文件
touch /usr/local/docker/zookeeper/data/myid
# 添加配置 1 ，此编号代表选举的时候的编号
echo 1 > /usr/local/docker/zookeeper/data/myid

172.16.31.192

# 创建 myid 配置文件
touch /usr/local/docker/zookeeper/data/myid
# 添加配置 2 ，此编号代表选举的时候的编号
echo 2 > /usr/local/docker/zookeeper/data/myid

172.16.31.193

# 创建 myid 配置文件
touch /usr/local/docker/zookeeper/data/myid
# 添加配置 3 ，此编号代表选举的时候的编号
echo 3 > /usr/local/docker/zookeeper/data/myid

第五步，docker方式启动 Zookeeper 3.6.1，3台虚拟机都要，如下

172.16.31.191

docker run --network host -v /usr/local/docker/zookeeper/data:/data -v /usr/local/docker/zookeeper/conf/zoo.cfg:/conf/zoo.cfg --name zookeeper-1 -d zookeeper:3.6.1

172.16.31.192

docker run --network host -v /usr/local/docker/zookeeper/data:/data -v /usr/local/docker/zookeeper/conf/zoo.cfg:/conf/zoo.cfg --name zookeeper-2 -d zookeeper:3.6.1

172.16.31.193

docker run --network host -v /usr/local/docker/zookeeper/data:/data -v /usr/local/docker/zookeeper/conf/zoo.cfg:/conf/zoo.cfg --name zookeeper-3 -d zookeeper:3.6.1

第五步，任选一台虚拟机配置 zookeeper-ui 可视化管理界面，我选的是 172.16.31.191，虚拟机需要配置好 jdk 环境！如下

1、上 GitHub 拉取最新代码： https://github.com/DeemOpen/zkui

git clone https://github.com/DeemOpen/zkui.git

2、打开项目，进入根目录进行编译打包

mvn clean install

3、打包完后将 target 目录下的 zkui-2.0-SNAPSHOT-jar-with-dependencies.jar 包上传到 /usr/local/docker/zookeeper/zookeeper-ui 目录下

4、进入 /usr/local/docker/zookeeper/zookeeper-ui 目录，创建 config.cfg 配置文件，如下

cd /usr/local/docker/zookeeper/zookeeper-ui
vim config.cfg

config.cfg

#Server Port
serverPort=9090
#Comma seperated list of all the zookeeper servers
zkServer=172.16.31.191:2181,172.16.31.192:2181,172.16.31.193:2181
#Http path of the repository. Ignore if you dont intent to upload files from repository.
scmRepo=http://myserver.com/@rev1=
#Path appended to the repo url. Ignore if you dont intent to upload files from repository.
scmRepoPath=//appconfig.txt
#if set to true then userSet is used for authentication, else ldap authentication is used.
ldapAuth=false
ldapDomain=mycompany,mydomain
#ldap authentication url. Ignore if using file based authentication.
ldapUrl=ldap://:/dc=mycom,dc=com
#Specific roles for ldap authenticated users. Ignore if using file based authentication.
ldapRoleSet={"users": [{ "username":"domain\\user1" , "role": "ADMIN" }]}
userSet = {"users": [{ "username":"admin" , "password":"admin","role": "ADMIN" },{ "username":"appconfig" , "password":"appconfig","role": "USER" }]}
#Set to prod in production and dev in local. Setting to dev will clear history each time.
env=prod
jdbcClass=org.h2.Driver
jdbcUrl=jdbc:h2:zkui
jdbcUser=root
jdbcPwd=manager
#If you want to use mysql db to store history then comment the h2 db section.
#jdbcClass=com.mysql.jdbc.Driver
#jdbcUrl=jdbc:mysql://localhost:3306/zkui
#jdbcUser=root
#jdbcPwd=manager
loginMessage=Please login using admin/manager or appconfig/appconfig.
#session timeout 5 mins/300 secs.
sessionTimeout=300
#Default 5 seconds to keep short lived zk sessions. If you have large data then the read will take more than 30 seconds so increase this accordingly. 
#A bigger zkSessionTimeout means the connection will be held longer and resource consumption will be high.
zkSessionTimeout=5
#Block PWD exposure over rest call.
blockPwdOverRest=false
#ignore rest of the props below if https=false.
https=false
keystoreFile=/home/user/keystore.jks
keystorePwd=password
keystoreManagerPwd=password
# The default ACL to use for all creation of nodes. If left blank, then all nodes will be universally accessible
# Permissions are based on single character flags: c (Create), r (read), w (write), d (delete), a (admin), * (all)
# For example defaultAcl={"acls": [{"scheme":"ip", "id":"192.168.1.192", "perms":"*"}, {"scheme":"ip", id":"192.168.1.0/24", "perms":"r"}]
defaultAcl=
# Set X-Forwarded-For to true if zkui is behind a proxy
X-Forwarded-For=false

5、保存后启动项目，如下

 nohup java -jar zkui-2.0-SNAPSHOT-jar-with-dependencies.jar &

第六步，访问 172.16.31.191:9090 查看集群状态，如下

注意，账号密码在 config.cfg 里面的 userSet 配置选项，我配置为 admin/admin，如下能查到各个节点的信息，则表示集群部署成功

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