Yum
General Information
YellowDog Update Manager (yum) .
Checklist
- Distro(s): Enterprise Linux
Kernel Maintenance
View Installed Kernels
rpm -q kernel
Remove Old Kernels
- Install yum utils
yum install yum-utils
- Cleanup, set count to how many old kernels you want to remain
package-cleanup --oldkernels --count=3
- Set number of installed kernels as a persistent setting
vim /etc/yum.conf installonly_limit=3
Package Version Locking
Lock packages at specific versions to prevent them from being upgraded with “yum update”.
Install the version lock yum plugin
yum install yum-plugin-versionlock
Lock httpd package at the current installed version
yum versionlock httpd
List version locked entries
yum versionlock list
Remove httpd from being version locked
yum versionlock delete httpd
Remove all packages from being version locked
yum versionlock clear
Package Excludes
Exclude packages from a yum update, temporarily and persistently.
Exclude one time
yum update --exclude=kernel*
Exclude persistently
vim /etc/yum.conf exclude=kernel* httpd*