ObsidianRepository/HaiNiuHadoop搭建/2.ZooKeeper配置.md

Zookeeper脚本配置

• 拷贝ips

cp ips ips_zookeeper

修改为

nn1
nn2
nn3

• 拷贝三个脚本

cp scp_all.sh scp_all_zookeeper.sh 
cp ssh_all.sh ssh_all_zookeeper.sh 
cp ssh_root.sh ssh_root_zookeeper.sh

• 修改脚本

vim scp_all_zookeeper.sh 
vim ssh_all_zookeeper.sh 
vim ssh_root_zookeeper.sh 

将三个脚本中的ips改为ips_zookeeper

Zookeeper安装

• 上传到/tmp目录下，解压

sudo tar -zxvf /tmp/zookeeper-3.4.8.tar.gz -C /usr/local/
scp -r /usr/local/zookeeper-3.4.8/ root@nn2:/usr/local/
scp -r /usr/local/zookeeper-3.4.8/ root@nn3:/usr/local/
ssh_root_zookeeper.sh chown -R hadoop:hadoop /usr/local/zookeeper-3.4.8
ssh_root_zookeeper.s ln -s /usr/local/zookeeper-3.4.8/ /usr/local/zookeeper

Zookeeper配置

• zoo.cfg配置

cd /usr/local/zookeeper/conf/
cp zoo_sample.cfg zoo.cfg

然后vim zoo.cfg,修改如下：

# 修改dataDir
dataDir=/data/zookeeper
# 添加一下内容
server.1=nn1:2888:3888 
server.2=nn2:2888:3888 
server.3=nn3:2888:3888

分发给nn2、nn3 scp_all_zookeeper.sh /usr/local/zookeeper/conf/zoo.cfg /usr/local/zookeeper/conf/

• zkEnv.sh配置 vim /usr/local/zookeeper/bin/zkEnv.sh ! 分发到nn2、nn3

scp_all_zookeeper.sh /usr/local/zookeeper/bin/zkEnv.sh /usr/local/zookeeper/bin/

• 创建zookeeper数据目录

ssh_root_zookeeper.sh mkdir -p /data/zookeeper
ssh_root_zookeeper.sh chown -R hadoop:hadoop /data

• 创建myid文件

ssh nn1 'echo "1" > /data/zookeeper/myid'
ssh nn2 'echo "2" > /data/zookeeper/myid'
ssh nn3 'echo "3" > /data/zookeeper/myid'

• 配置Zookeeper环境变量

  # 在其他所有主机也执行
  sudo chown -R hadoop:hadoop /etc/profile.d/myEnv.sh
  

```bash
echo 'export ZOOKEEPER_HOME=/usr/local/zookeeper' >> /etc/profile.d/myEnv.sh
echo 'export PATH=$PATH:$ZOOKEEPER_HOME/bin' >> /etc/profile.d/myEnv.sh

# 分发到nn2、nn3
scp_all_zookeeper.sh /etc/profile.d/myEnv.sh /etc/profile.d/
# source 环境变量
ssh_all_zookeeper.sh source /etc/profile

Zookeeper的命令

#启动zk服务
ssh_all_zookeeper.sh /usr/local/zookeeper/bin/zkServer.sh start
#查看每个机器ZK运行的状态
ssh_all_zookeeper.sh /usr/local/zookeeper/bin/zkServer.sh status
#整体停止服务
ssh_all_zookeeper.sh /usr/local/zookeeper/bin/zkServer.sh stop 
#重启zk服务
ssh_all_zookeeper.sh /usr/local/zookeeper/bin/zkServer.sh restart

#启动zookeeper客户端，并连接zookeeper集群
/usr/local/zookeeper/bin/zkCli.sh -server nn1:2181
# 可以简化为:
zkCli.sh