CentOS6.X upgrade kernel Kernel
CentOS 6.X upgrades Kernel to facilitate the installation of Docker
- Upgrade method
Reference: http://elrepo.org/tiki/tiki-index.php
- Import public key:
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
For more information about the GPG key used by the ELRepo project, please refer to https://www.elrepo.org/tiki/key If your system has secure boot enabled, please refer to the SecureBootKey page for more information.
- Install ELRepo for RHEL-7, SL-7 or CentOS-7:
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm(external link)
- Install ELRepo for RHEL-6, SL-6 or CentOS-6:
rpm -Uvh http://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm
- Upgrade Kernel
It should be noted here that there are two kernel options in ELRepo, one is kernel-lt (long-term support version), the other is kernel-ml (the latest version of the mainline), using the long-term support version (kernel-lt), which is more stable
# kernel-lt
yum --enablerepo=elrepo-kernel install kernel-lt -y
or
# kernel-ml
yum --enablerepo=elrepo-kernel install kernel-ml -y
- The installation is complete, you need to modify grub
vim /etc/grub.conf
According to the location of the kernel after installation, modify the value of default, which is generally modified to 0, because default starts from 0, and generally the newly installed kernel is in the first position, so set default=0
After all operations are completed, restart the host, and execute uname -r after restarting to check the kernel version number
[ root@db-slave ~]# uname -r
4.14.3- 1. el6.elrepo.x86_64
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