CentOS Change Kernel

Check Network Interface information:

• ip a
• ip l
• nmcli d
• nmtui

Download replacement kernel

The CentOS6 kernel is replaced with: 2.6.32-504.3.3.el6.x86_64

1 2	rpm -ivh http://soft.91yun.pw/ISO/Linux/CentOS/kernel/kernel-firmware-2.6.32-504.3.3.el6.noarch.rpm rpm -ivh http://soft.91yun.pw/ISO/Linux/CentOS/kernel/kernel-2.6.32-504.3.3.el6.x86_64.rpm --force

The CentOS7 kernel is replaced with: 3.10.0-229.1.2.el7.x86_64

1	rpm -ivh http://soft.91yun.pw/ISO/Linux/CentOS/kernel/kernel-3.10.0-229.1.2.el7.x86_64.rpm --force

Check if the kernel is installed successfully

1

[root@centos7-test1 ~]# rpm -qa | grep kernel kernel-3.10.0-1062.el7.x86_64 kernel-3.10.0-229.1.2.el7.x86_64 abrt-addon-kerneloops-2.1.11-55.el7.centos.x86_64 kernel-tools-3.10.0-1062.12.1.el7.x86_64 kernel-3.10.0-1062.12.1.el7.x86_64 kernel-tools-libs-3.10.0-1062.12.1.el7.x86_64 [root@centos7-test1 ~]#

If it shows that there is this kernel in it, that's right.

Restart to see if kernel is successfully replaced

Reboot machine and check the kernel again:

[root@centos7-test1 ~]# uname -r 

3.10.0-229.1.2.el7.x86_64

[root@centos7-test1 ~]# rpm -ivh http://soft.91yun.pw/ISO/Linux/CentOS/kernel/kernel-3.10.0-229.1.2.el7.x86_64.rpm --force
Retrieving http://soft.91yun.pw/ISO/Linux/CentOS/kernel/kernel-3.10.0-229.1.2.el7.x86_64.rpm
Preparing...                          ################################# [100%]
Updating / installing...
   1:kernel-3.10.0-229.1.2.el7        ################################# [100%]
bash
modsign
nss-softokn
i18n
network
ifcfg
drm
plymouth
btrfs
crypt
dm
dmraid
kernel-modules
lvm
mdraid
qemu
qemu-net
iscsi
nfs
oci
resume
rootfs-block
terminfo
udev-rules
virtfs
biosdevname
systemd
usrmount
base
fs-lib
microcode_ctl-fw_dir_override
shutdown
bash
modsign
rescue
nss-softokn
i18n
network
ifcfg
drm
plymouth
btrfs
crypt
dm
dmraid
kernel-modules
lvm
mdraid
qemu
qemu-net
iscsi
nfs
oci
resume
rootfs-block
terminfo
udev-rules
virtfs
biosdevname
systemd
usrmount
base
fs-lib
microcode_ctl-fw_dir_override
shutdown
[root@centos7-test1 ~]#

References