How to Deploy Dubbo with Zookeeper on CentOS: Step‑by‑Step Guide

Overview

Dubbo is an open‑source Java RPC framework that can use Apache Zookeeper as its service registry. Zookeeper provides centralized configuration, naming, synchronization, and group services.

1. Prepare the system

yum install -y gcc gcc-c++ vim-enhanced glibc make unzip openssl openssl-devel openssh-server openssh-clients wget

2. Synchronize time

yum install -y ntp
/usr/sbin/ntpdate cn.pool.ntp.org
# Add to crontab to run hourly
* */1 * * * /usr/sbin/ntpdate cn.pool.ntp.org > /dev/null 2>&1

3. Install JDK and Zookeeper on 192.168.199.175

rpm -ivh jdk-7u55-linux-x64.rpm
tar zxvf zookeeper-3.4.5.tar.gz
cd zookeeper-3.4.5
cp conf/zoo_sample.cfg conf/zoo.cfg

Edit conf/zoo.cfg with:

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/dubbo/zookeeper/data
clientPort=2181
server.1=192.168.199.175:2555:3555
server.2=192.168.199.176:2555:3555

Create data directory and set the server id:

mkdir -p /dubbo/zookeeper/data
touch /dubbo/zookeeper/data/myid
echo 1 > /dubbo/zookeeper/data/myid

4. Install JDK and Zookeeper on 192.168.199.176

Repeat the steps above, but set myid to 2:

rpm -ivh jdk-7u55-linux-x64.rpm
tar zxvf zookeeper-3.4.5.tar.gz
cd zookeeper-3.4.5
cp conf/zoo_sample.cfg conf/zoo.cfg
# same zoo.cfg content as host 175
mkdir -p /dubbo/zookeeper/data
touch /dubbo/zookeeper/data/myid
echo 2 > /dubbo/zookeeper/data/myid

5. Start Zookeeper

On each host:

cd /root/zookeeper-3.4.5/bin
./zkServer.sh start

Successful start prints:

JMX enabled by default
Using config: /root/zookeeper-3.4.5/conf/zoo.cfg
Starting zookeeper ... STARTED

6. Deploy Dubbo admin console on 192.168.199.175

tar zxvf apache-tomcat-7.0.14.tar.gz
cd apache-tomcat-7.0.14
rm -rf webapps/ROOT
unzip /root/dubbo-admin-2.4.1.war -d webapps/ROOT

Edit webapps/ROOT/WEB-INF/dubbo.properties:

dubbo.registry.address=zookeeper://192.168.199.175:2181
dubbo.admin.root.password=root
dubbo.admin.guest.password=guest

Start Tomcat:

cd bin
sh startup.sh

7. Verify deployment

Open a browser to http://192.168.199.175:8080. Log in with username root and password root. The Dubbo management console appears, confirming that Zookeeper and Dubbo are correctly configured and running.