Install ActiveMQ under Centos7

Start learning to use ActiveMQ today. Before learning, we deploy ActiveMQ on the server.

Prepare the environment##

• Centos 7
• JDK 8
• activemq 5.15.11

download link###

The author recommends downloading from Official Website.

Direct download address

Steps##

The next step is to install activemq.

Get activemq

You can directly click the download address above and upload to the server via FTP tool. (FileZilla etc.)

You can also use the wget tool to operate on the server.

wget http://mirror.bit.edu.cn/apache//activemq/5.15.11/apache-activemq-5.15.11-bin.tar.gz

If there is no wget command on the server, you can install wget through yum -y install wget

Unzip###

We install activemq into the /var directory

## First unzip to/var directory
tar -xvf apache-activemq-5.15.11-bin.tar.gz -C /var
## Apache-activemq-5.15.11 Rename
mv /var/apache-activemq-5.15.11/var/activemq

ActiveMQ start and stop###

First we enter the installation directory: /var/activemq

Start the service: ./bin/activemq start

Stop the service: ./bin/activemq stop

Make ActiveMQ a system service##

1. First create a systemd service file: vi /usr/lib/systemd/system/activemq.service
2. Write the following content in the file:

[ Unit]
Description=ActiveMQ service
After=network.target

[ Service]
Type=forking
ExecStart=/var/activemq/bin/activemq start
ExecStop=/var/activemq/bin/activemq stop
User=root
Group=root
Restart=always
RestartSec=9
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=activemq

[ Install]
WantedBy=multi-user.target

1. Find the directory where the java command is located: whereis java

1. Set JAVA_HOME in activemq configuration file /var/activemq/bin/env

# Location of the java installation
# Specify the location of your java installation using JAVA_HOME, or specify the
# path to the "java" binary using JAVACMD
# ( set JAVACMD to "auto"for automatic detection)
JAVA_HOME=" /var/java/jdk1.8.0_241"
JAVACMD="auto"

1. Manage activemq start and stop through systemctl

• Start activemq service: systemctl start activemq
• View service status: systemctl status activemq

If you want to start automatically after booting, you can run the following command:

• Create software link: ln -s /usr/lib/systemd/system/activemq.service /etc/systemd/system/multi-user.target.wants/activemq.service
• Auto start after boot: systemctl enable activemq
• Check whether the opening is successful (enable): systemctl list-unit-files |grep activemq

Firewall configuration###

If we access remotely, there may be a firewall problem. We can turn off the firewall through the following name.

Firewall configuration, the default Web management port of ActiveMQ is 8161 (admin/admin), and the default communication port is 61616

1. Add and restart firewall

firewall-cmd --zone=public--add-port=8161/tcp --permanent
firewall-cmd --zone=public--add-port=61616/tcp --permanent
systemctl restart firewalld.service

1. You can also directly choose to close the firewall: systemctl stop firewalld.service

Configure web management system###

The configuration file of ActiveMQ web management system is in: /var/activemq/conf

Modify port###

< bean id="jettyPort"class="org.apache.activemq.web.WebConsolePort" init-method="start"><!-- the default port number for the web console --><property name="host" value="0.0.0.0"/><!--This is the port of the management platform--><property name="port" value="8161"/></bean>

Close login###

< bean id="securityConstraint"class="org.eclipse.jetty.util.security.Constraint"><property name="name" value="BASIC"/><property name="roles" value="user,admin"/><!--Change to false to close login--><property name="authenticate" value="true"/></bean>

Other configuration###

Other configuration files are in: /var/activemq/conf/jetty-realm.properties

## ---------------------------------------------------------------------------
# The account password can be maintained here, format:
# username:password,Roles
# Defines users that can access the web(console, demo, etc.)
# username: password [,rolename ...]
admin: admin, admin
user:123, user

The above is the basic process of installing ActiveMQ under Centos7 without any problems.