# 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, Ubuntu20.04 to Ubuntu21.04 is Upgrade
  • MySQL5.6.25 to MySQL5.6.30 is Update, MySQL5.6 to MySQL5.7 is Upgrade

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

  • Sytem update(Operating System and Running Environment)
  • PHP Version Upgrade
  • Application Upgrade

# System Update

Run an update command to complete the system update:

#For Ubuntu
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

# PHP Version Upgrade

Refert to the docs PHP version upgrade (opens new window)

# Application Upgrade

Different application have different upgrade solution, not discussed here

# Q&A

# Is this Image support MySQL5.6 upgrade to MySQL5.7?

No,you can upgrade the same version, E.g 5.6.x to 5.6.y or 5.7.x to 5.7.y

# Is this Image support PHP7.0 upgrade to PHP7.2?

Yes

# Is this Image support PHP7.2 downgrade PHP7.0?

No

# What should I do before upgrade?

You should backup all your data