Introduce support for Rocky Linux 9. (#154)

README.md

@@ -1,13 +1,14 @@
-# Switch from CentOS to Oracle Linux
+# Switch from CentOS/Rocky Linux to Oracle Linux
 
-This script is designed to automatically switch a CentOS instance to Oracle Linux
-by removing any CentOS-specific packages or replacing them with the Oracle Linux
+This script is designed to automatically switch a CentOS or Rocky Linux instance to Oracle Linux
+by removing any distribution-specific packages or replacing them with the Oracle Linux
 equivalent.
 
 ## Supported versions and architectures
 
 This script currently supports switching CentOS Linux 6, CentOS Linux 7,
-CentOS Linux 8, and Rocky Linux on both `x86_64` and `aarch64` architectures. It does **not** support CentOS Stream.
+CentOS Linux 8, Rocky Linux 8 and Rocky Linux 9 on both `x86_64` and `aarch64` architectures. 
+It does **not** support CentOS Stream.
 
 > Support for switching Rocky Linux should be considered **experimental** due to limited testing. Likewise, switching any of the
 > operating systems mentioned above on `aarch64` hosts should be considered **experimental**.
@@ -44,7 +45,8 @@ any kernel that is installed that is _not_ provided by either the `base` or
 
 ## Usage
 
-1. Login to your CentOS Linux 6, 7 or 8 instance as a user who has `sudo` privileges.
+1. Login to your CentOS Linux 6, 7 or 8 or Rocky Linux 8 or 9 instance as a user 
+ who has `sudo` privileges.
 1. Either clone this repository or download the [`centos2ol.sh`][3] script.
 1. Run `sudo bash centos2ol.sh` to switch your CentOS instance to Oracle Linux.
 
@@ -88,7 +90,7 @@ how to run them.
 
 ## Limitations
 
-1. The script currently needs to be able communicate with the CentOS and Oracle
+1. The script currently needs to be able communicate with the CentOS/Rocky and Oracle
  Linux yum repositories either directly or via a proxy.
 1. The script currently does not support instances that are registered to a
  third-party management tool like Spacewalk, Foreman or Uyuni.

centos2ol.sh

@@ -145,6 +145,11 @@ else
 fi
 
 case "$os_version" in
+ 9*)
+repo_file=public-yum-ol9.repo
+new_releases=(oraclelinux-release oraclelinux-release-el9 redhat-release)
+base_packages=("${base_packages[@]}" plymouth grub2 grubby)
+;;
  8*)
  repo_file=public-yum-ol8.repo
  new_releases=(oraclelinux-release oraclelinux-release-el8 redhat-release)
@@ -189,7 +194,7 @@ fi
 
 echo "Checking for required python packages..."
 case "$os_version" in
- 8*)
+ 8* | 9* )
  dep_check /usr/libexec/platform-python
  ;;
  *)
@@ -238,7 +243,7 @@ fi
 
 echo "Finding your repository directory..."
 case "$os_version" in
- 8*)
+ 8* | 9* )
 reposdir=$(/usr/libexec/platform-python -c "
 import dnf
 import os
@@ -263,7 +268,7 @@ esac
 
 echo "Learning which repositories are enabled..."
 case "$os_version" in
- 8*)
+ 8* | 9* )
  enabled_repos=$(/usr/libexec/platform-python -c "
 import dnf
 
@@ -294,6 +299,36 @@ cd "$reposdir"
 # No https://yum.oracle.com/public-yum-ol8.repo file exists
 # Download the content for 6 and 7 based systems and directly enter the content for 8 based systems
 case "$os_version" in
+
+
+ 9*)
+ cat > "switch-to-oraclelinux.repo" <<-'EOF'
+[ol9_baseos_latest]
+name=Oracle Linux 9 BaseOS Latest ($basearch)
+baseurl=https://yum.oracle.com/repo/OracleLinux/OL9/baseos/latest/$basearch/
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
+gpgcheck=1
+enabled=1
+
+[ol9_appstream]
+name=Oracle Linux 9 Application Stream ($basearch)
+baseurl=https://yum.oracle.com/repo/OracleLinux/OL9/appstream/$basearch/
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
+gpgcheck=1
+enabled=1
+
+EOF
+ if [ "$arch" == "x86_64" ]; then
+ cat >> "switch-to-oraclelinux.repo" <<-'EOF'
+	[ol9_UEKR7]
+name=Latest Unbreakable Enterprise Kernel Release 7 for Oracle Linux $releasever ($basearch)
+baseurl=https://yum.oracle.com/repo/OracleLinux/OL9/UEKR7/$basearch/
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
+gpgcheck=1
+enabled=1
+EOF
+ fi
+ ;;
  8*)
  cat > "switch-to-oraclelinux.repo" <<-'EOF'
 [ol8_baseos_latest]
@@ -358,7 +393,7 @@ if [[ $old_release =~ ^centos-release-8.* ]] || [[ $old_release =~ ^centos-linux
  old_release=$(rpm -qa centos*repos)
 fi
 # Most distros keep their /etc/yum.repos.d content in the -release rpm. Rocky Linux 8 does not.
-if [[ $old_release =~ ^rocky-release-8.* ]]; then
+if [[ $old_release =~ ^rocky-release-*.* ]]; then
  old_release=$(rpm -qa rocky*repos)
 fi
 
@@ -443,6 +478,16 @@ case "$os_version" in
  [centos-sclo-rh]="RPM oracle-softwarecollection-release-el7"
  )
  ;;
+
+ 9*)
+ declare -A repositories=(
+ [AppStream]="REPO ol9_appstream"
+ [appstream]="REPO ol9_appstream"
+ [BaseOS]="REPO ol9_baseos_latest"
+ [baseos]="REPO ol9_baseos_latest"
+)
+;;
+
  8*)
  declare -A repositories=(
  [AppStream]="REPO ol8_appstream"
@@ -587,7 +632,7 @@ if [ "$arch" == "aarch64" ]; then
 fi
 
 case "$os_version" in
- 7* | 8*)
+ 7* | 8* | 9* )
  echo "Updating the GRUB2 bootloader."
  if [ -d /sys/firmware/efi ]; then
  grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg