Cara Migrasi Ke Almalinux Dari Centos

Semenjak Centos 8 masa support nya berakhir pada 31 januari 2022, tentunya bagi sysadmin yang menggunakan Centos 8 perlu melakukan Migrasi demi keberlangsungan server kedepannya terutama pengguna Control Panel seperti CPanel, DirectAdmin, IspManager, dsb.

Tidak hanya Centos 8 yang bisa di migrasi ke AlamaLinux, varian distribusi dibawah ini bisa juga di konversi ;

• CentOS 8, 9
• CentOS Stream 8, 9
• Oracle Linux 8, 9
• RHEL 8, 9
• Rocky Linux 8, 9
• Virtuozzo Linux (VZLinux) 8, 9

Tapi dalam tulisan berikut ini menggunakan Centos 8.

Persiapan

Untuk minimal versi yang di support untuk migrasi/konversi untuk Centos adalah versi 8.4, jadi pastikan versi centos kalian sesuai dengan command.

sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[baseos\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/BaseOS/$basearch/os' /etc/yum.repos.d/CentOS-Linux-BaseOS.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[appstream\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/AppStream/$basearch/os' /etc/yum.repos.d/CentOS-Linux-AppStream.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[cr\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/ContinuousRelease/$basearch/os' /etc/yum.repos.d/CentOS-Linux-ContinuousRelease.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[devel\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/Devel/$basearch/os' /etc/yum.repos.d/CentOS-Linux-Devel.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[extras\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/extras/$basearch/os' /etc/yum.repos.d/CentOS-Linux-Extras.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[fasttrack\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/fasttrack/$basearch/os' /etc/yum.repos.d/CentOS-Linux-FastTrack.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[ha\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/HighAvailability/$basearch/os' /etc/yum.repos.d/CentOS-Linux-HighAvailability.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[plus\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/centosplus/$basearch/os' /etc/yum.repos.d/CentOS-Linux-Plus.repo
sudo sed -i -e '/mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&arch=$basearch&repo=/ s/^#*/#/' -e '/baseurl=http:\/\/mirror.centos.org\/$contentdir\/$releasever\// s/^#*/#/' -e '/^\[powertools\]/a baseurl=https://mirror.rackspace.com/centos-vault/8.5.2111/PowerTools/$basearch/os' /etc/yum.repos.d/CentOS-Linux-PowerTools.repo

atau jika centos masih dalam config yum respos default fresh install, bisa gunakan yang dibawah ini :

sed -i 's/#mirrorlist/mirrorlist/g' /etc/yum.repos.d/CentOS-Linux-*
sed -i 's|baseurl=http://mirror.centos.org|baseurl=https://mirror.rackspace.com/centos-vault|g' /etc/yum.repos.d/CentOS-*

Jika sudah melakukan update pada centos dan tunggu hingga selesai

# dnf update -y

Download dan Running Script konversi Almalinux

Download script konversi AlmaLinux, bisa pakai curl atau wget.

# curl -O https://raw.githubusercontent.com/AlmaLinux/almalinux-deploy/master/almalinux-deploy.sh

atau

# wget https://raw.githubusercontent.com/AlmaLinux/almalinux-deploy/master/almalinux-deploy.sh

Tampilan eksekusinya

Running atau jalankan script konversi.

# bash almalinux-deploy.sh

Setelah progress selesai tampilan akan seperti dibawah ini

Cek Linux version dan Grub loader kernel.

Tampilan Versi Linux sudah ke AlmaLinux 8.7 (Stone Smilodon)

[root@server ~]# cat /etc/redhat-release
AlmaLinux release 8.7 (Stone Smilodon)

Grub Kernel sudah boot default ke AlmaLinux

[root@server ~]# grubby --info DEFAULT | grep AlmaLinux
title="AlmaLinux (4.18.0-425.13.1.el8_7.x86_64) 8.7 (Stone Smilodon)"

Sampai Disini proses migrasi atau konversi dari centos ke almalinux sudah selesai dah server bisa di reboot.

Almalinux Instalasi Linux Web-Server

Cara Install dan Running Multi PHP ( Ver. 7.4 dan 8.2) serta Apache Di AlmaLinux 9

Instalasi Linux Networking

Cara Disable NetworkManager dan install Network-Scripts AlmaLinux 8, RockyLinux

Aplikasi

Membuat Bootable flashdisk dengan Rufus