Zookeeper3.4.10 + ActiveMQ-5.15.0 集群搭建

网上的教程真的是凤毛麟角，就不想说啥了，一次一次把我带入坑。

好了关于Zookeeper的搭建已经说好了，本文说说基于Zookeeper的MQ集群。

第一步、将mq安装包上传到CentOS7，并解压

我这里有个   /mysoft   的路径，用来存放安装包的。执行命令：

[root@localhost mysoft]# ll
total
-rw-r--r--.  root root   Jul  : apache-activemq-5.15.-bin.tar.gz
-rw-r--r--.  root root  Jul  : jdk-8u131-linux-x64.gz
-rw-r--r--.  root root   Jul  : zookeeper-3.4..tar.gz
[root@localhost mysoft]# tar -zxvf apache-activemq-5.15.-bin.tar.gz -C /usr/local

我这里解压到了/usr/local 目录下。

第二步、修改配置文件

小插曲：
 
当我没有配置ActiveMQ的环境变量时，会出现（两个/）
[root@localhost conf]# cd ../
[root@localhost apache-activemq-5.15.]# cd bin
[root@localhost bin]# ./activemq start
INFO: Loading '/usr/local/apache-activemq-5.15.0//bin/env'
INFO: Using java '/usr/local/java/jdk/jdk1.8.0_131/bin/java'
INFO: Starting - inspect logfiles specified in logging.properties and log4j.properties to get details
INFO: pidfile created : '/usr/local/apache-activemq-5.15.0//data/activemq.pid' (pid '')
 
所以我就配了个环境变量，
 
vi /etc/profile
 
export ACTIVEMQ_HOME=/usr/local/apache-activemq-5.15.0

之后就没有两个/了

找到配置文件

cd /usr/local/apache-activemq-5.15./conf
 
vi activemq.xml

1. 先修改节点名称，这里三台机器一致

2. 修改persistenceAdapter

节点一：

节点二：

节点三：

3. 提个醒

第三步、开放端口

2. 端口说明

Zookeeper
 – the port that clients will use to connect to the ZK ensemble
 – port used by ZK for quorum election
 – port used by ZK for leader election
ActiveMQ
 – 消息端口（服务端口）　　# 默认的
  – 控制台端口　　　　　　　# 默认的
 – 集群通信端口

centos7命令开放端口--重启防火墙--查看端口：

[root@localhost conf]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost conf]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost conf]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost conf]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost conf]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost conf]# firewall-cmd --zone=public --add-port=/tcp --permanent
success

[root@localhost conf]# systemctl restart firewalld 

[root@localhost conf]# firewall-cmd --zone=public --list-ports 
/tcp /tcp /tcp /tcp /tcp /tcp

第四步、启动Zookeeper，启动MQ

Zookeeper的启动我就不说了，我写的那篇文章有。

先定位到ActiveMQ的bin目录。然后
 
./activemq start

节点一：

节点二：

节点三：

那么有没有启动成功呢？

先看看ActiveMQ的启动日志，有没有异常的东西

[root@localhost conf]# cd ../
[root@localhost apache-activemq-5.15.]# cd data/
[root@localhost data]# tail activemq.log
-- ::, | WARN  | unprocessed event state: AuthFailed | org.apache.activemq.leveldb.replicated.groups.ZKClient | main-EventThread
-- ::, | INFO  | Socket connection established to 192.168.127.131/192.168.127.131:, initiating session | org.apache.zookeeper.ClientCnxn | main-SendThread(192.168.127.131:)
-- ::, | INFO  | Session establishment complete on server 192.168.127.131/192.168.127.131:, sessionid = 0x25d71f9f3ed0000, negotiated timeout =  | org.apache.zookeeper.ClientCnxn | main-SendThread(192.168.127.131:)
-- ::, | WARN  | listeners are taking too long to process the events | org.apache.activemq.leveldb.replicated.groups.ChangeListenerSupport | main-EventThread
-- ::, | WARN  | listeners are taking too long to process the events | org.apache.activemq.leveldb.replicated.groups.ChangeListenerSupport | main-EventThread
-- ::, | INFO  | Using the pure java LevelDB implementation. | org.apache.activemq.leveldb.LevelDBClient | ActiveMQ BrokerService[activemqCluster] Task-
-- ::, | INFO  | Attaching to master: tcp://192.168.127.129:62621 | org.apache.activemq.leveldb.replicated.SlaveLevelDBStore | ActiveMQ BrokerService[activemqCluster] Task-1
-- ::, | INFO  | Slave started | org.apache.activemq.leveldb.replicated.MasterElector | ActiveMQ BrokerService[activemqCluster] Task-
-- ::, | INFO  | Attaching... Downloaded 0.00/0.00 kb and / files | org.apache.activemq.leveldb.replicated.SlaveLevelDBStore | hawtdispatch-DEFAULT-
-- ::, | INFO  | Attached | org.apache.activemq.leveldb.replicated.SlaveLevelDBStore | hawtdispatch-DEFAULT-

可以看出并没有。

再执行一下zkCli.sh ，看看有没有我们配的节点。

[root@localhost data]# cd /usr/local
[root@localhost local]# zkCli.sh
Connecting to localhost:
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:zookeeper.version=3.4.-39d3a4f269333c922ed3db283be479f9deacaa0f, built on // : GMT
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:host.name=localhost
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.version=1.8.0_131
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.vendor=Oracle Corporation
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.home=/usr/local/java/jdk/jdk1..0_131/jre
-- ::, [myid:] - INFO  
 
...省略
 
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.io.tmpdir=/tmp
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.compiler=<NA>
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:os.name=Linux
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:os.arch=amd64
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:os.version=3.10.-.el7.x86_64
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:user.name=root
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:user.home=/root
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:user.dir=/usr/local
-- ::, [myid:] - INFO  [main:ZooKeeper@] - Initiating client connection, connectString=localhost: sessionTimeout= watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@506c589e
-- ::, [myid:] - INFO  [main-SendThread(localhost:):ClientCnxn$SendThread@] - Opening socket connection to server localhost/127.0.0.1:. Will not attempt to authenticate using SASL (unknown error)
Welcome to ZooKeeper!
JLine support is enabled
-- ::, [myid:] - INFO  [main-SendThread(localhost:):ClientCnxn$SendThread@] - Socket connection established to localhost/127.0.0.1:, initiating session
-- ::, [myid:] - INFO  [main-SendThread(localhost:):ClientCnxn$SendThread@] - Session establishment complete on server localhost/127.0.0.1:, sessionid = 0x15d71f9f3e00000, negotiated timeout = 
 
WATCHER::
 
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:(CONNECTED) ] ls /
[activemq, zookeeper]
[zk: localhost:(CONNECTED) ] ls /activemq
[leveldb-stores]
[zk: localhost:(CONNECTED) ] ls /activemq/leveldb-stores
[, , ]
[zk: localhost:(CONNECTED) ] quit
Quitting...
-- ::, [myid:] - INFO  [main:ZooKeeper@] - Session: 0x15d71f9f3e00000 closed
-- ::, [myid:] - INFO  [main-EventThread:ClientCnxn$EventThread@] - EventThread shut down for session: 0x15d71f9f3e00000
[root@localhost local]# 

可以看到

[00000000006, 00000000007, 00000000005]

，之所以不是1，2，3，可能是我前几次没成功导致的吧，毕竟掉了几次坑。。。

你在这三台机器上都可以看到这三个，就证明ok了。

最后直观一点：打开浏览器。分别访问

http://192.168.127.129:8161/admin/

http://192.168.127.130:8161/admin/

http://192.168.127.131:8161/admin/

会发现只有一个提供服务。

------------------------------

-----------------------------------

现在我们停掉129的MQ

[root@localhost local]# cd apache-activemq-5.15./bin/
[root@localhost bin]# ./activemq stop
INFO: Loading '/usr/local/apache-activemq-5.15.0/bin/env'
INFO: Using java '/usr/local/java/jdk/jdk1.8.0_131/bin/java'
INFO: Waiting at least  seconds for regular process termination of pid '' :
Java Runtime: Oracle Corporation 1.8.0_131 /usr/local/java/jdk/jdk1..0_131/jre
  Heap sizes: current=63360k  free=62311k  max=1013632k
    JVM args: -Xms64M -Xmx1G -Djava.util.logging.config.file=logging.properties -Djava.security.auth.login.config=/usr/local/apache-activemq-5.15./conf/login.config -Dactivemq.classpath=/usr/local/apache-activemq-5.15./conf:/usr/local/apache-activemq-5.15./../lib/: -Dactivemq.home=/usr/local/apache-activemq-5.15. -Dactivemq.base=/usr/local/apache-activemq-5.15. -Dactivemq.conf=/usr/local/apache-activemq-5.15./conf -Dactivemq.data=/usr/local/apache-activemq-5.15./data
Extensions classpath:
  [/usr/local/apache-activemq-5.15./lib,/usr/local/apache-activemq-5.15./lib/camel,/usr/local/apache-activemq-5.15./lib/optional,/usr/local/apache-activemq-5.15./lib/web,/usr/local/apache-activemq-5.15./lib/extra]
ACTIVEMQ_HOME: /usr/local/apache-activemq-5.15.
ACTIVEMQ_BASE: /usr/local/apache-activemq-5.15.
ACTIVEMQ_CONF: /usr/local/apache-activemq-5.15./conf
ACTIVEMQ_DATA: /usr/local/apache-activemq-5.15./data
...Connecting to pid:
..Stopping broker: activemqCluster
... TERMINATED
[root@localhost bin]# 

发现刚才不可以访问的130可以访问了

到这里Zookeeper+ActiveMQ集群搭建好了，关于负载均衡以后更新