zookeeper 集群安装

🧙 Questions

安装zookeeper集群 3.8.1 版本

部署环境 centOS 7.9 64位

服务器个数最好是奇数

hostname	公网ip	内网ip	CPU	内存
isxcode-main1	39.98.65.13	172.16.215.101	8C	16GB
isxcode-main2	47.92.252.139	172.16.215.100	8C	16GB
isxcode-node1	39.98.76.185	172.16.215.97	4C	8GB
isxcode-node2	39.98.77.191	172.16.215.96	4C	8GB
isxcode-node3	47.92.217.66	172.16.215.95	4C	8GB

☄️ Ideas

前提

• 服务器集群初始化

安装java环境（每台都要装）

sudo yum install -y java-1.8.0-openjdk-devel java-1.8.0-openjdk

下载zookeeper （一台加载即可）

cd /tmp
nohup wget https://archive.apache.org/dist/zookeeper/zookeeper-3.8.1/apache-zookeeper-3.8.1-bin.tar.gz >> download_zookeeper.log 2>&1 &
tail -f download_zookeeper.log

分发安装包

scp /tmp/apache-zookeeper-3.8.1-bin.tar.gz ispong@isxcode-main2:/tmp/
scp /tmp/apache-zookeeper-3.8.1-bin.tar.gz ispong@isxcode-node1:/tmp/
scp /tmp/apache-zookeeper-3.8.1-bin.tar.gz ispong@isxcode-node2:/tmp/
scp /tmp/apache-zookeeper-3.8.1-bin.tar.gz ispong@isxcode-node3:/tmp/

创建安装目录 (每台都要创建)

sudo mkdir -p /data/zookeeper 
sudo chown -R ispong:ispong /data/zookeeper

解压并创建软连接 (每台都要执行)

tar -vzxf /tmp/apache-zookeeper-3.8.1-bin.tar.gz -C /data/zookeeper
sudo ln -s /data/zookeeper/apache-zookeeper-3.8.1-bin /opt/zookeeper

配置环境变量 (每台都要执行)

sudo tee -a /etc/profile <<-'EOF'
export ZOOKEEPER_HOME=/opt/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin
EOF
source /etc/profile

修改zookeeper配置文件 (每台都要执行)

mkdir -p /data/zookeeper/data 
mkdir -p /data/zookeeper/logs   
touch /data/zookeeper/data/zookeeper_server.pid

cp /opt/zookeeper/conf/zoo_sample.cfg  /opt/zookeeper/conf/zoo.cfg
vim /opt/zookeeper/conf/zoo.cfg

注意：将当前服务器配置中的ip改为0.0.0.0

# 修改数据存储位置
# 直接新增
dataDir=/data/zookeeper/data
dataLogDir=/data/zookeeper/logs

# 修改zk端口号，默认2181
clientPort=2181

# ... other config

# 服务器信息
server.1=0.0.0.0:2888:3888
server.2=isxcode-main2:2888:3888
server.3=isxcode-node1:2888:3888
server.4=isxcode-node2:2888:3888
server.5=isxcode-node3:2888:3888

# 如果是isxcode-main2，则是以下配置，依次类推
# server.1=isxcode-main1:2888:3888
# server.2=0.0.0.0:2888:3888
# server.3=isxcode-node1:2888:3888
# server.4=isxcode-node2:2888:3888
# server.5=isxcode-node3:2888:3888

添加myid文件 (每台都要添加)

注意: 和配置zoo.cfg中的server.${number}保持一致

vim /data/zookeeper/data/myid

1

配置zookeeper自启 (每台都要创建)

注意：要修改用户和用户组

sudo vim /usr/lib/systemd/system/zookeeper.service

[Unit]
Description=Zookeeper Service
After=network.target

[Service]
Environment=JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk
Type=forking
WorkingDirectory=/data/zookeeper
PermissionsStartOnly=true
ExecStart=/opt/zookeeper/bin/zkServer.sh start
ExecStop=/opt/zookeeper/bin/zkServer.sh stop
ExecReload=/opt/zookeeper/bin/zkServer.sh restart
PIDFile=/data/zookeeper/data/zookeeper_server.pid
KillMode=none
Restart=always
User=ispong
Group=ispong

[Install]
WantedBy=multi-user.target

启动开机自启 (每台都要执行)

sudo systemctl daemon-reload
sudo systemctl enable zookeeper
# sudo systemctl disable zookeeper

提前测试是否命令可以启动

zkServer.sh start
# 查看日志
cat /opt/zookeeper/logs/zookeeper-*.out
# 查看端口是否启动
ps -ef | grep org.apache.zookeeper.server.quorum.QuorumPeerMain
sudo netstat -nap | grep 31669
zkServer.sh status

启动命令

sudo systemctl stop zookeeper
sudo systemctl restart zookeeper

sudo systemctl start zookeeper

查看运行状态

sudo systemctl status zookeeper

查看日志

tail -f /data/zookeeper/apache-zookeeper-3.8.1-bin/logs/zookeeper-isxcode-server-main1.out

查看进程

sudo ps aux | grep zookeeper

查看节点状态

zkServer.sh status

🔗 Links

• zookeeper website
• zookeeper download