生命无罪，健康万岁，我是laity。
Seven times have I despised my soul:
For the first time, it feigned humility when it could have been aggressive;
The second time, when it was empty, fill it with lust;
The third time, between difficult and easy, it chose easy;
For the fourth time, it made a mistake, but comforted itself by saying that others would also make mistakes;
The fifth time, it is free and weak, but it is regarded as the tenacity of life;
The sixth time, when it despises an ugly face, it does not know that it is one of its own masks;
For the seventh time, it leaned sideways in the mud of life, although it was not reconciled, it was timid.
Docker install ZK
- View local mirrors and retrieve and pull Zookeeper mirrors
# 查看本地镜像
docker images
# 检索ZooKeeper 镜像
docker search zookeeper
# 拉取ZooKeeper镜像最新版本
docker pull zookeeper:latest
# 我使用的版本
docker pull zookeeper:3.5.7
- Create a ZooKeeper mount directory (data mount directory, configuration mount directory, and log mount directory)
mkdir -p /mydata/zookeeper/data # Data mount directory
mkdir -p /mydata/zookeeper/conf # Configuration mount directory
mkdir -p /mydata/zookeeper/logs # Log mount directory
- Start the ZooKeeper container
docker run -d --name zookeeper --privileged=true -p 2181:2181 -v /mydata/zookeeper/data:/data -v /mydata/zookeeper/conf:/conf -v /mydata/zookeeper/logs:/datalog zookeeper:3.5.7
- Parameter Description
-e TZ="Asia/Shanghai" # 指定上海时区
-d # 表示在一直在后台运行容器
-p 2181:2181 # 对端口进行映射，将本地2181端口映射到容器内部的2181端口
--name # 设置创建的容器名称
-v # 将本地目录(文件)挂载到容器指定目录；
--restart always #始终重新启动zookeeper，看需求设置不设置自启动
- Add the ZooKeeper configuration file, and add the zoo.cfg configuration file under the mounted configuration file directory (/mydata/zookeeper/conf). The configuration content is as follows:
dataDir=/data # 保存zookeeper中的数据
clientPort=2181 # 客户端连接端口，通常不做修改
dataLogDir=/datalog
tickTime=2000 # 通信心跳时间
initLimit=5 # LF(leader - follower)初始通信时限
syncLimit=2 # LF 同步通信时限
autopurge.snapRetainCount=3
autopurge.purgeInterval=0
maxClientCnxns=60
standaloneEnabled=true
admin.enableServer=true
server.1=localhost:2888:3888;2181
- Enter the container and verify the container status
# 进入zookeeper 容器内部
docker exec -it zookeeper /bin/bash
# 检查容器状态
docker exec -it zookeeper /bin/bash ./bin/zkServer.sh status
# 进入控制台
docker exec -it zookeeper zkCli.sh
- Install ZooInspector client connection
Download address: https://issues.apache.org/jira/secure/attachment/12436620/ZooInspector.zip;
Order:
java -jar zookeeper-dev-ZooInspector.jar
The problem encountered: WARNING: IPv4 forwarding is disabled. Networking will not work
解决办法：
# vi /etc/sysctl.conf
或者
# vi /usr/lib/sysctl.d/00-system.conf
添加如下代码：
net.ipv4.ip_forward=1
重启network服务
# systemctl restart network
test
docker exec -it zookeeper zkCli.sh
Articles about the detailed introduction of zookeeper operation
Docker installs Zookeeper cluster
- Prepare three machines to ping each other
- Configuration file zoo.cfg
cd /mydata/zookeeper/conf
vim zoo.cfg
# 三台机器分别执行添加
clientPort=2181
dataDir=/data
dataLogDir=/data/log
tickTime=2000
initLimit=5
syncLimit=2
autopurge.snapRetainCount=3
autopurge.purgeInterval=0
maxClientCnxns=60
server.1=node1:2888:3888
server.2=node2:2888:3888
server.3=node3:2888:3888
- Set myid ID
echo 1 > /mydata/zookeeper/conf/myid
1、2、3 三台机器分别执行
zookeeper选举也会根据myid的大小进行投票master