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:
[azureuser@cdh1~]$ sudo su -
step 1: Download and install Jdk 7
[root@cdh1 ~]# rpm -qa|grep jdk|xargs rpm -e --nodeps
[root@cdh1 ~]# 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
[root@cdh1 ~]# source /etc/profile.d/java.sh
[root@cdh1 ~]# echo "10.0.0.4 cdh1" >>/etc/hosts [root@cdh1 ~]# echo "10.0.0.5 cdh2" >>/etc/hosts [root@cdh1 ~]# echo "10.0.0.6 cdh3" >>/etc/hosts [root@cdh1 ~]# curl -LO http://archive.cloudera.com/cdh5/one-click-install/redhat/6/x86_64/cloudera-cdh-5-0.x86_64.rpm [root@cdh1 ~]# yum localinstall cloudera-cdh-5-0.x86_64.rpm -y [root@cdh1 ~]# yum clean all -y [root@cdh1 ~]# yum repolist [root@cdh1 ~]# rpm --import http://archive.cloudera.com/cdh5/redhat/5/x86_64/cdh/RPM-GPG-KEY-cloudera [root@cdh1 ~]# 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 [root@cdh1 ~]# /etc/init.d/zookeeper-server init --myid=1 && /etc/init.d/zookeeper-server start on cdh2 [root@cdh2 ~]# /etc/init.d/zookeeper-server init --myid=2 && /etc/init.d/zookeeper-server start on cdh3 [root@cdh3 ~]# /etc/init.d/zookeeper-server init --myid=3 && /etc/init.d/zookeeper-server start [root@cdh2 ~]# zookeeper-client -server cdh1:2181 step1: Download latest activemq
[root@cdh1 ~]# wget http://www.us.apache.org/dist/activemq/5.11.1/apache-activemq-5.11.1-bin.tar.gz
step2: Extract archive
[root@cdh1 ~]# tar zxvf apache-activemq-5.11.1-bin.tar.gz -C /opt/
[root@cdh1 ~]# cd /opt/apache-activemq-5.11.1/conf
<persistenceAdapter>
<kahaDB directory="${activemq.data}/kahadb"/>
</persistenceAdapter>6. 2. After activemq.xml
Note: Each node of the hostname must be different.
<persistenceAdapter>
<replicatedLevelDB
directory="${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>
7. Testing activemq high availability
step 1: Start ActiveMQ on each node
[root@cdh1 ~]# cd /opt/apache-activemq-5.11.1/
[root@cdh1 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
[root@cdh1 ~]# netstat -tulpn | grep 61616
step 3: Stop ActiveMQ on cdh1 [root@cdh1 ~]# cd /opt/apache-activemq-5.11.1/ [root@cdh1 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.
