Update & Upgrade

Updates and upgrades are one of the maintenance tasks for sytem. Programs that are not upgraded for a long time, like buildings that are not maintained for a long time, will accelerate aging and gradually lose functionality until they are unavailable.

You should know the differences between the terms Update and Upgrade(Extended reading (opens new window))

• Operating system patching is Update, Ubuntu16.04 to Ubuntu18.04 is Upgrade
• MySQL5.6.25 to MySQL5.6.30 is Update, MySQL5.6 to MySQL5.7 is Upgrade

For ActiveMQ maintenance, focus on the following two Update & Upgrade jobs

• Sytem update(Operating System and Running Environment)
• ActiveMQ upgrade

System Update

Run an update command to complete the system update:

#For Ubuntu&Debian
apt update && apt upgrade -y

#For Centos&Redhat
yum update -y

This deployment package is preconfigured with a scheduled task for automatic updates. If you want to remove the automatic update, please delete the corresponding Cron

ActiveMQ Upgrade

ActiveMQ upgrade is similar to installation, you can upgrade it by the following steps

1. Prepare for upgrade

   # stop ActiveMQ service
   systemctl stop activemq
   
   # rename the dir of ActiveMQ for backup
   mv /opt/apache-activemq  /opt/apache-activemqBK
   

2. Download ActiveMQ (opens new window) and upload it to the directory /opt after unzip it, then renamed the directory to apache-activemq
3. Run the following modify permissions separately

   chown -R activemq. /opt/apache-activemq
   chmod 640  /opt/apache-activemq/examples/stomp/php/*
   chmod +x /opt/apache-activemq/bin/activemq
   

4. Restart the ActiveMQ Service