How to upgrade CentOS 7 to CentOS 8 Linux in tamil
Step 1:
yum update –y
#Install the EPEL Repository
yum install epel-release
#Install yum-utils tools
[root@upgrade-centos ~]# yum install yum-utils -y
#Install rpmconf to resolve RPM packages
[root@upgrade-centos ~]# yum install rpmconf -y
rpmconf -a
package-cleanup –leaves
package-cleanup –orphans
#Step 2:
#Install dnf (package manager) on CentOS 7
yum install dnf -y
#Remove YUM package manager
dnf remove yum yum-metadata-parser
rm -rf /etc/yum
Step 3:
#Upgrade CentOS 7 to Centos 8
dnf upgrade
Step 4:
#Install CentOS 8 release package using dnf
dnf install
#Upgrade EPEL Repository
dnf -y upgrade
#Remove all temporary files
dnf clean all
#Remove the old CentOS 7 Kernel
rpm -e `rpm -q kernel`
#Remove all the conflicting packages
rpm -e –nodeps sysvinit-tools
Step 5:
#Upgrade to CentOS 8. This will take some time
dnf -y –releasever=8 –allowerasing –setopt=deltarpm=false distro-sync
#Install new kernel for CentOS 8
dnf -y install kernel-core
#Install CentOS 8 minimal packages
dnf -y groupupdate “Core” “Server with GUI”
Reboot the server
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