Docker分布式部署zookeeper集群
docker分布式部署zookeeper
部署环境
HOST1: centos7 :192.168.51.121
HOST2: centos7 :192.168.51.155
HOST3: centos7 :192.168.51.122
三台机器全部关闭防火墙:
//临时关闭
systemctl stop firewalld
//禁止开机启动
systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.第一种方式
部署
1.安装docker
https://blog.csdn.net/qq_32488647/article/details/81773947
2.部署(每台机器都执行相同的操作)
启动docker
sudo systemctl start docker拉取镜像
#不指定版本默认拉取latest
sudo docker pull zookeeper创建容器
#HOST1
sudo docker run -d --name=zookeeper1 --net=host zookeeper
#HOST2
sudo docker run -d --name=zookeeper2 --net=host zookeeper
#HOST3
sudo docker run -d --name=zookeeper3 --net=host zookeeper
修改配置文件
#HOST1:
$sudo docker exec -it zookeeper1 /bin/bash
$vi /conf/zoo.cfg
##改成下面
clientPort=2181
dataDir=/data
dataLogDir=/datalog
tickTime=2000
initLimit=5
syncLimit=2
server.1=192.168.51.121:2888:3888
server.2=192.168.51.155:2888:3888
server.3=192.168.51.122:2888:3888
#修改myid为1
$vi /data/myid
HOST2和HOST3zoo.cfg配置文件都一样,myid分别为2,3
3.验证
#进入服务器命令行
docker exec -it qd-zookeeper2 /bin/bash
#查看zkServer运行状态，Mode为follower或leader
bin/zkServer.sh status如果出现Mode为standalone则防火墙未关或配置文件有问题zookeeper
第二种方式
第一步拉取镜像:
sudo docker pull jplock/zookeeper
第二步本地创建配置文件夹
#创建文件夹
sudo mkdir /opt/zookeeper
#创建临时容器将配置文件拷贝到宿主机
sudo docker run -tid --name=test jplock/zookeeper
sudo docker cp test:/opt/zookeeper/conf /opt/zookeeper
#删除临时容器
sudo docker rm -f test第三步修改配置文件
sudo vim /opt/conf/zoo.cfg
修改成如下:
# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/opt/zookeeper/data
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1
#下面是宿主机host
server.1=192.168.51.121:2888:3888
server.2=192.168.51.155:2888:3888
server.3=192.168.51.122:2888:3888
第四步创建容器(每台机器创建时只需要name不一样就可以)
# -v代表将容器的文件夹挂载到宿主机上
sudo docker run -tid --restart=always -p 2181:2181 -p 2888:2888 -p 3888:3888 --net=host -v /opt/zookeeper/data:/opt/zookeeper/data -v /opt/zookeeper/logs:/opt/zookeeper/logs -v /opt/zookeeper/conf:/opt/zookeeper/conf --name=zookeeper1 jplock/zookeeper
上面步骤执行完之后还需要修改myid才能集群
第五步修改myid
sudo vim /opt/data/myid
只需要输入1(对应的第二台宿主机输入2,第三台输入3)
重启容器
sudo docker restart zookeeper1
验证:
echo stat|nc 192.168.51.121