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Install kernel from elrepo

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At first need enable ELRepo Repository. To set up ELRepo repository, you need to import its official GPG key and then install ELRepo RPM as follows. Also you can follow original http://elrepo.org/tiki/tiki-index.php instalation guide.

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For Centos 7

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rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
+rpm -Uvh https://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
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For Centos 8

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rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
+yum install https://www.elrepo.org/elrepo-release-8.0-2.el8.elrepo.noarch.rpm
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Install kernel-ml and kernel-ml-devel

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yum --enablerepo=elrepo-kernel install -y kernel-ml kernel-ml-devel
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To show installed kernels run command:

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awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg
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Set installed kernel as default for grub2 bootloader:

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grub2-set-default 0
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Reboot system and check kernel version

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uname -r
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Now you can continue Install on Centos with modules vlan_mon and ipoe

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