ZooKeeper集群部署
作者:互联网
Zookeeper的介绍
- ZooKeeper主要服务于分布式系统,可以用ZooKeeper来做:统一配置管理、统一命名服务、分布式锁、集群管理。
- 使用分布式系统就无法避免对节点管理的问题(需要实时感知节点的状态、对节点进行统一管理等等),而由于这些问题处理起来可能相对麻烦和提高了系统的复杂性,ZooKeeper作为一个能够通用解决这些问题的中间件就应运而生了。
zookeeper的选举策略也是需要半数以上的节点同意才能当选leader,如果是偶数节点可能导致票数相同的情况,所以Zookeeper做集群最好部署3,5,7个节点。
Zookeeper包下载地址:http://zookeeper.apache.org/releases.html#download 或 http://archive.apache.org/dist/zookeeper/
服务规划
Zookeeper部署
1.关闭防火墙和SELinux(所有设备)
systemctl stop firewalld.service
systemctl disable firewalld.service
setenforce 0
vi /etc/selinux/config
SELINUX=enforcing改为SELINUX=disabled
2.安装JDK
zookeeper是由java开发,所以需要有JDK 1.6以上的运行环境支持,JDK的部署可参考JDK的安装配置(Windows、Linux)
3.配置IP地址和主机名之间的映射(所有设备)
vim /etc/hosts
192.168.36.152 node1 192.168.36.153 node2 192.168.36.154 node3
4.配置主机名(所有设备)
vim /etc/sysconfig/network
network=主机名
需重启设备使配置生效:init 6
5.安装Zookeeper(192.168.36.152)
先在一台设备上部署
解压安装包
tar -zxvf apache-zookeeper-3.8.0-bin.tar.gz -C /usr/local/
修改Zookeeper配置文件
cd /usr/local/apache-zookeeper-3.8.0-bin/conf/
cp zoo_sample.cfg zoo.cfg
vim zoo.cfg
#数据文件目录 dataDir=/usr/local/apache-zookeeper-3.8.0-bin/data #Zookeeper客户端连接端口 clientPort=2181 #集群服务地址,2888为zookeeper集群内通讯端口,Leader监听此端口 server.1=node1:2888:3888 server.2=node2:2888:3888 server.3=node3:2888:3888 #保留3个快照 autopurge.snapRetainCount=3 #1小时清理一下日志 autopurge.purgeInterval=1
mkdir /usr/local/apache-zookeeper-3.8.0-bin/data
将Zookeeper拷贝至其他节点
scp -r /usr/local/apache-zookeeper-3.8.0-bin/ root@node2:/usr/local/
scp -r /usr/local/apache-zookeeper-3.8.0-bin/ root@node3:/usr/local/
6.配置Zookeeper的id(所有设备)
cd /usr/local/apache-zookeeper-3.8.0-bin/data
vi myid
#myid对应zoo.cfg配置文件里相应的server号,node1也就会是1,node2是2,node3则是3 1
7.配置环境变量(所有设备)
vim /etc/profile
export ZK_HOME=/usr/local/apache-zookeeper-3.8.0-bin export PATH=$PATH:$ZK_HOME/bin
source /etc/profile
8.启动Zookeeper(所有设备)
cd /usr/local/apache-zookeeper-3.8.0-bin/bin #配置了环境变量则不进入该路径也可以
./zkServer.sh start
ZooKeeper JMX enabled by default Using config: /usr/local/apache-zookeeper-3.8.0-bin/bin/../conf/zoo.cfg Starting zookeeper ... STARTED
三台zookeeper启动后再查看zookeeper状态,可以看到我是node2被选举为了leader
[root@node2 bin]# ./zkServer.sh status ZooKeeper JMX enabled by default Using config: /usr/local/apache-zookeeper-3.8.0-bin/bin/../conf/zoo.cfg Client port found: 2181. Client address: localhost. Client SSL: false. Mode: leader [root@node1 bin]# ./zkServer.sh status ZooKeeper JMX enabled by default Using config: /usr/local/apache-zookeeper-3.8.0-bin/bin/../conf/zoo.cfg Client port found: 2181. Client address: localhost. Client SSL: false. Mode: follower
jps命令查看,看到QuorumPeerMain即可,QuorumPeerMain是zookeeper集群的启动类,用来加载配置启动QuorumPeer线程的
10451 QuorumPeerMain 10622 Jps
标签:bin,zookeeper,部署,ZooKeeper,集群,usr,apache,local,3.8 来源: https://www.cnblogs.com/cjzzz/p/16279255.html