Install Activemq Cluster on CentOS 6.6

ACTIVEMQ Cluster Environment

Role IP hostname
master:10.0.0.4 CDH1
Slave 1:10.0.0.5 CDH2
Slave 2:10.0.0.6 Cdh3

1. Install JDK on your Server

Note:the same steps on each node (include Cdh1, CDH2, and CDH3)

To elevate permissions, Run command:

[Email protected]~]$ sudo su-

Step 1:download and install JDK 7

[Email protected] ~]# rpm-qa|grep Jdk|xargs rpm-e--nodeps

[Email protected] ~]# wget--no-check-certificate--no-cookies--header "cookie:oraclelicense= Accept-securebackup-cookie "

sudo tar zxvf jdk-7u67-linux-x64.tar.gz-c/opt/

Step 2:configuration environment variable

Cat >/etc/profile.d/java.sh<<eof

Export java_home=/opt/jdk1.7.0_67

Export path=\ $PATH: \ $JAVA _home/bin

Eof

Step 3:take effect immediately

[[email protected] ~]# source /etc/profile.d/java.sh
[[email protected] ~]# echo "10.0.0.4 cdh1" >>/etc/hosts
[[email protected] ~]# echo "10.0.0.5 cdh2" >>/etc/hosts
[[email protected] ~]# echo "10.0.0.6 cdh3" >>/etc/hosts




[[email protected] ~]# curl -LO http://archive.cloudera.com/cdh5/one-click-install/redhat/6/x86_64/cloudera-cdh-5-0.x86_64.rpm
 
[[email protected] ~]# yum localinstall cloudera-cdh-5-0.x86_64.rpm -y
[[email protected] ~]# yum clean all -y
[[email protected] ~]# yum repolist
 
[[email protected] ~]# rpm --import http://archive.cloudera.com/cdh5/redhat/5/x86_64/cdh/RPM-GPG-KEY-cloudera
 



[[email protected] ~]# yum install zookeeper* -y
 
cat >/etc/zookeeper/conf/zoo.cfg <<EOF
maxClientCnxns=50
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/var/lib/zookeeper
clientPort=2181
server.1=cdh1:2888:3888
server.2=cdh2:2888:3888
server.3=cdh3:2888:3888
EOF
 
on cdh1
[[email protected] ~]# /etc/init.d/zookeeper-server init --myid=1 && /etc/init.d/zookeeper-server start

on cdh2
[[email protected] ~]# /etc/init.d/zookeeper-server init --myid=2 && /etc/init.d/zookeeper-server start

on cdh3
[[email protected] ~]# /etc/init.d/zookeeper-server init --myid=3 && /etc/init.d/zookeeper-server start



[[email protected] ~]# zookeeper-client -server cdh1:2181



step1: Download latest activemq
[[email protected] ~]# wget http://www.us.apache.org/dist/activemq/5.11.1/apache-activemq-5.11.1-bin.tar.gz
 
step2: Extract archive

[[email protected] ~]# tar zxvf apache-activemq-5.11.1-bin.tar.gz -C /opt/ 

[[email protected] ~]# cd /opt/apache-activemq-5.11.1/conf




    <persistenceAdapter>
        <kahaDB directory="${activemq.data}/kahadb"/>
    </persistenceAdapter>

6.2. After Activemq.xml

 
<persistenceAdapter> 

<replicatedleveldb 

directory= "${activemq.data}/leveldb" 

Replicas= "3" 

Bind= "tcp://0.0.0.0:0" 

Zkaddress= "cdh1:2181,cdh2:2181,cdh3:2181" 

Hostname= "Cdh1" 

Sync= "Local_disk" 

Zkpath= "/activemq/leveldb-stores" 

/> 

</persistenceAdapter> 

 Strong>

 

	
  


 

Note:each node of the hostname must be different.

7. Testing activemq high availability

step 1: Start ActiveMQ on each node

[[email protected] ~]# cd /opt/apache-activemq-5.11.1/

[[email protected] apache-activemq-5.11.1]# ./bin/activemq start

step 2: Verify Service on each node 

Note: We can see only the 61616 port of the CDH1 node is working 

[[email protected] ~]# netstat -tulpn | grep 61616

step 3: Stop ActiveMQ on cdh1

[[email protected] ~]# cd /opt/apache-activemq-5.11.1/
 
[[email protected] apache-activemq-5.11.1]# ./bin/activemq stop

13. Output results of cdh1 and cdh2 are compared.

Note: we can see cdh2 node has taken over the cdh1‘s work.