CentOS7 install update security patch

The simplest and most comprehensive update, you can directly use the yum update command, but this command, check all the rpm software packages in the system, find updated, directly upgrade

yum update
yum update --exclude=kenel* #Exclude the upgrade of all packages starting with kenel, the test may fail because other packages depend on the exclusion
yum update --exclude=kenel*,pthon* #Exclude multiple, it is also possible not to write the equal sign, and -x is the short option of --exclude

System administrators usually only care about the security update part of the system when upgrading the system, and the upgrade of pure software version does not need to be rooted, because upgrading them may cause unpredictable problems. We only install the security update part of the system update.

The commonly used ones are as follows, two, recommended to use yum –security update-minimal

yum --security update
yum --security update-minimal