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Last Updated on August 2, 2019 by admin
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
Configuring 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.
In the [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.
Run the following command to check the available updates for CentOS 7.
sudo yum check-updateYou will see the the output with a list of all packages that are available for update for CentOS 7.
To update single package, run the following command:
sudo yum install curlMeanwhile, 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-versionlockRun the following command to prevent specific packages from being updated:
sudo yum versionlock curl-*
Summary: Multiple method to install updates on CentOS 7.
