2019独角兽企业重金招聘Python工程师标准>>> 
基础环境：
系统环境：centos6.7
软件包:zookeeper-3.4.10.tar.gz
| 主机ip | 消息端口 | 通信端口 |
| 192.168.33.17 | 2181 | 2888：3888 |
| 192.168.33.18 | 2181 | 2888：3888 |
| 192.168.33.19 | 2181 | 2888：3888 |
| 主机ip | 集群间的通信端口 | 消息端口 | 控制台端口 |
| 192.168.33.17 | 62621 | 61616 | 8161 |
| 192.168.33.18 | 62621 | 61616 | 8161 |
| 192.168.33.19 | 62621 | 61616 | 8161 |
zookeeper集群安装配置（需要在所有集群节点配置）：
0.ZooKeeper依赖于Java,请先安装好java，并配置好环境变量。
1.配置ZooKeeper环境变量
# vim /etc/profile
export ZOOKEEPER=/usr/local/zookeeper-3.4.10
export PATH=$ZOOKEEPER/bin:$PATH2.修改配置文件名
mv zoo_sample.cfg zoo.cfg3. 修改配置文件
vim zoo.cfg主要修改两个地方,如下：
(1)data文件目录默认不存在需要手动创建
dataDir=/usr/local/zookeeper-3.4.10/data
(2)配置文件最后增加集群服务器ip及端口信息
server.1=192.168.33.17:2888:3888
server.2=192.168.33.18:2888:3888
server.3=192.168.33.19:2888:3888
4.在Zookeeper主目录下创建data目录
mkdir data
cd data/在data文件夹下建立myid(三个节点，0，1，2)
#vim myid
05.启动zookeeper
cd /usr/local/zookeeper-3.4.10/bin
./zkServer.sh start6.查看ZooKeeper进程
[root@localhost bin]# jps
2406 QuorumPeerMain
2487 Jps
7.查看节点状态(可以看到该节点角色为master)
# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.4.10/bin/../conf/zoo.cfg
Mode: leader
ActiveMQ集群配置：
1.vim usr/local/activemq5.15/conf/activemq.xml
(1)修改brokerName,三台机器的brokerName相同,都为"activemq-cluster"
<broker xmlns="http://activemq.apache.org/schema/core" brokerName="activemq-cluster" dataDirectory="${activemq.data}">(2)修改数据库为replicatedLevelDB
注:hostname 填写本机的ip
<persistenceAdapter>
<!--
<kahaDB directory="${activemq.data}/kahadb"/>
-->
<replicatedLevelDB
directory="${activemq.data}/leveldb"
replicas="3"
bind="tcp://0.0.0.0:62621"
zkAddress="192.168.33.17:2181,192.168.33.18:2181,192.168.33.19:2181"
hostname="192.168.33.19"
zkPath="/activemq/leveldb-stores"
/>
</persistenceAdapter>
2.三台mq机器分别启动mq服务
/usr/local/activemq5.15/bin/activemq start
3.集群测试
访问http://192.168.33.17:8161/
http://192.168.33.18:8161/
http://192.168.33.19:8161/
可以发现只有一台机器能够访问到，则集群配置成功
4.zookeeper client端，查看zookeeper集群信息
zkCli.sh
[zk: localhost:2181(CONNECTED) 4] ls /activemq/leveldb-stores
[00000000002, 00000000003, 00000000001]可以看到有三个节点信息
5.通过idea,安装zookeeper插件，也可以查询到ActiveMq集群信息
01
{"id":"activemq-cluster","container":null,"address":"tcp://192.168.33.18:62621","position":-1,"weight":1,"elected":"0000000001"}02
{"id":"activemq-cluster","container":null,"address":null,"position":-1,"weight":1,"elected":null}03
{"id":"activemq-cluster","container":null,"address":null,"position":-1,"weight":1,"elected":null}可以看到，192.68.33.18为目前active的机器。