Insight: How to Install Updates on CentOS 7
CentOS 7 is one of the popular server side Linux operating system. Today, we will show you the method to install updates on CentOS 7.
Tutorial To Install Updates On CentOS 7 Operating System.
There are two ways to install updates on CentOS 7.
Method 1: Automatic updates on CentOS 7.
You can use yum-cron script to configure automatic updates on CentOS 7. Install yum-cron script using following command:
sudo yum install yum-cron
Enable and start the service:
sudo systemctl enable yum-cronsudo systemctl start yum-cron
To verify that the service is running:
systemctl status yum-cron
There are two configuration files, the hourly configuration file yum-cron.conf and the daily configuration file yum-cron-hourly.conf.
To edit the yum-cron configuration file, open the file in your text editor:
sudo nano /etc/yum/yum-cron-hourly.conf
We changed the update_cmd to security and enabled unattended updates by setting apply_updates to yes:
[commands] update_cmd = security update_messages = yes download_updates = yes apply_updates = yes random_sleep = 360
The second sections defines how to send messages.
[base] section you can override the settings defined in the
yum.conf file. For example, you can exclude specific packages from being updated.
[base] debuglevel = -2 mdpolicy = group:main exclude = firefox*
Method 2: Manual updates on CentOS 7.
sudo yum check-update
sudo yum install curl
Meanwhile, if you want to prevent any pacakges being updated, you can do it with the help of third party app called
versionlock , run the following command to install it:
sudo install yum-plugin-versionlock
Run the following command to prevent specific packages from being updated:
sudo yum versionlock curl-*
Summary: Multiple method to install updates on CentOS 7.