Centos7 Configure Automatic Update installation security patches

First, we open the CENTOS7 system and ensure that the system can connect to the extranet, in this article, "Ping Www.baidu" for testing, concrete display as shown in the following figure. 2

Then execute the command "Yum update-y" to update the system manually, as shown in the following figure. 3

After the system has been updated, we execute the command "Yum install yum-cron-y" To install the software, as shown in the following figure. 4

Then we use VI to open/etc/yum/yum-cron.conf. Modify the following to the following values:

Update_cmd = Security

Update_messages = yes

Download_updates = yes

Apply_updates = yes

The details are shown in the following figure. Save after the modification is complete. 5

Then we execute the command "systemctl start Yum-cron" and start the Yum-cron. The following figure shows the exact operation. 6

Finally, we will add Yum-cron to boot automatically. Executes the command "Systemctl enable Yum-cron". The following figure shows the exact operation.