Installing kernel 4.4 on CentOS 6.7
wget https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
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rpm –import RPM-GPG-KEY-elrepo.org
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wget http://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm
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rpm -Uvh elrepo-release-6-8.el6.elrepo.noarch.rpm
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yum install yum-plugin-fastestmirror
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sudo yum –enablerepo=elrepo-kernel install kernel-lt
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cat /boot/grub/grub.conf
grep title /boot/grub/grub.conf
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# uname -a
Linux localhost.localdomain 3.8.13-98.1.2.el6uek.x86_64 #2 SMP Thu Aug 13 12:24:05 PDT 2015 x86_64 x86_64 x86_64 GNU/Linux
$ uname -a
Linux localhost.localdomain 4.4.179-1.el6.elrepo.x86_64 #1 SMP Sat Apr 27 08:49:05 EDT 2019 x86_64 x86_64 x86_64 GNU/Linux