zookeeper集群部署

# zookeeper集群部署

# 安装jdk环境

# zookeeper安装

# 配置zookeeper集群

wget https://archive.apache.org/dist/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz 
tar xf zookeeper-3.4.14.tar.gz -C /opt 
ln -s /opt/zookeeper-3.4.14/ /opt/zookeeper
cd /opt/zookeeper/

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配置zoo.cfg

mkdir -p /data/zookeeper/{data,logs}
vi /opt/zookeeper/conf/zoo.cfg

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单机模式示例

dataDir=/data/zookeeper/data
dataLogDir=/data/zookeeper/logs
clientPort=2181
tickTime=2000
initLimit=5
syncLimit=2
autopurge.snapRetainCount=3
autopurge.purgeInterval=0
maxClientCnxns=60

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集群模式

添加hosts,或者DNS解析

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/data/zookeeper/data
dataLogDir=/data/zookeeper/logs
clientPort=2181
server.1=hdss14-12.host.com:2888:3888
server.2=hdss14-21.host.com:2888:3888
server.3=hdss14-22.host.com:2888:3888

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添加myid

注意这个myid要与zoo.cfg里面的 server.ID 对应

[root@hdss14-12 src]# echo '1' > /data/zookeeper/data/myid 
[root@hdss14-21 src]# echo '2' > /data/zookeeper/data/myid 
[root@hdss14-22 src]# echo '3' > /data/zookeeper/data/myid

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# 启动，检查

#启动
/opt/zookeeper/bin/zkServer.sh start 

#三台都执行，再检查
/opt/zookeeper/bin/zkServer.sh status

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zookeeper启动异常，检查

bash -x /opt/zookeeper/bin/zkServer.sh start
找到java 执行的那条命令，在命令行执行，查看报错日志

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[root@hdss14-12 zookeeper]# ./bin/zkServer.sh status 
ZooKeeper JMX enabled by default 
Using config: /opt/zookeeper/bin/../conf/zoo.cfg 
Mode: follower 
[root@hdss14-21 zookeeper]# ./bin/zkServer.sh status 
ZooKeeper JMX enabled by default 
Using config: /opt/zookeeper/bin/../conf/zoo.cfg 
Mode: leader 
[root@hdss14-22 zookeeper]# ./bin/zkServer.sh status 
ZooKeeper JMX enabled by default 
Using config: /opt/zookeeper/bin/../conf/zoo.cfg 
Mode: follower

# zookeeper添加到systemd

创建用户，修改权限

groupadd zookeeper
useradd  -M -s /sbin/nologin -g zookeeper zookeeper
chown -R zookeeper.zookeeper /data/zookeeper/

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添加zookeeper systemd

vi /usr/lib/systemd/system/zookeeper.service

[Unit]
Description=ZooKeeper Service
After=network.target
After=syslog.target

[Service]
Environment=ZOO_LOG_DIR=/data/zookeeper/logs
Environment=JAVA_HOME=/usr/local/jdk1.8
PIDFile=/data/zookeeper/data/zookeeper_server.pid
SyslogIdentifier=zookeeper

Type=forking
User=zookeeper
Group=zookeeper
ExecStart=/opt/zookeeper/bin/zkServer.sh start /opt/zookeeper/conf/zoo.cfg
ExecStop=/opt/zookeeper/bin/zkServer.sh stop /opt/zookeeper/conf/zoo.cfg
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=default.target

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上次更新: 2022/07/10, 23:09:14

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