Add non-standard kernel installation for RockyLinux 8 (#146)

* Add non-standard kernel installation for RockyLinux 8

* Add test VM in molecule tests for Rocky8 non-standard installation method

* Rename non-standard to dkms as an install method

* Automate installation process : kmod if possible, dkms as fallback

* BUGFIX : dmks installation needs EPEL repo for wireguard-tools

* Molecule : install ELRepo mainline kernel for rocky8 dkms installation

* Revert "Automate installation process : kmod if possible, dkms as fallback"

This reverts commit 822fbcbe5d8c484ecd984df57fd170749d6b97c1.

* Molecule : add wireguard_rockylinux8_installation_method variable to test-wg-rocky8-dkms

defaults/main.yml

@@ -57,3 +57,16 @@ wireguard_centos7_installation_method: "standard"
 
 # The default seconds to wait for machine to reboot and respond
 wireguard_centos7_kernel_plus_reboot_timeout: "600"
+
+#########################################
+# Settings only relevant for RockyLinux 8
+#########################################
+
+# Set wireguard_rockylinux8_installation_method to "dkms"
+# to build WireGuard module from source, with wireguard-dkms.
+# This is required if you use a custom kernel and/or your arch
+# is not x64_64.
+#
+# The default of "standard" will install the kernel module
+# with kmod-wireguard from ELRepo.
+wireguard_rockylinux8_installation_method: "standard"

molecule/kvm/molecule.yml

@@ -136,6 +136,17 @@ platforms:
     groups:
       - vpn
       - fedora
+  - name: test-wg-rocky8-dkms
+    box: generic/rocky8
+    interfaces:
+      - auto_config: true
+        network_name: private_network
+        type: static
+        ip: 192.168.10.130
+    groups:
+      - vpn
+      - el8
+      - el8-dkms
 
 provisioner:
   name: ansible
@@ -211,6 +222,12 @@ provisioner:
         wireguard_port: 51823
         wireguard_persistent_keepalive: "30"
         wireguard_endpoint: "192.168.10.120"
+      test-wg-rocky8-dkms:
+        wireguard_address: "10.10.10.130/24"
+        wireguard_port: 51820
+        wireguard_persistent_keepalive: "30"
+        wireguard_endpoint: "192.168.10.130"
+        wireguard_rockylinux8_installation_method: "dkms"
 
 scenario:
   name: kvm

molecule/kvm/prepare.yml

@@ -45,3 +45,16 @@
       ansible.builtin.apt:
         update_cache: true
         cache_valid_time: 3600
+
+- hosts: el8-dkms
+  remote_user: vagrant
+  become: true
+  gather_facts: true
+  tasks:
+    - name: Install ELRepo mainline kernel
+      ansible.builtin.raw: |
+        rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
+        dnf install -y https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm
+        dnf --enablerepo=elrepo-kernel install -y kernel-ml
+      changed_when: false
+      failed_when: false

tasks/setup-rocky-8.yml

@@ -2,6 +2,8 @@
 # Copyright (C) 2021 Robert Wimmer
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+- name: (Rocky Linux 8) Tasks for standard kernel
+  block:
     - name: (Rocky Linux 8) Install EPEL & ELRepo repository
       ansible.builtin.yum:
         name:
@@ -21,3 +23,35 @@
           - "kmod-wireguard"
           - "wireguard-tools"
         state: present
+  when:
+    - wireguard_rockylinux8_installation_method == "standard"
+
+- name: (Rocky Linux 8) Tasks for non-standard kernel
+  block:
+    - name: (Rocky Linux 8) Install jdoss/wireguard COPR repository
+      community.general.copr:
+        state: enabled
+        name: jdoss/wireguard
+        chroot: epel-8-{{ ansible_architecture }}
+
+    - name: (Rocky Linux 8) Install EPEL repository
+      ansible.builtin.yum:
+        name:
+          - epel-release
+        update_cache: true
+
+    - name: (Rocky Linux 8) Ensure WireGuard KMOD package is removed
+      ansible.builtin.yum:
+        name:
+          - "kmod-wireguard"
+        state: absent
+
+    - name: (Rocky Linux 8) Install WireGuard packages
+      ansible.builtin.yum:
+        name:
+          - "wireguard-dkms"
+          - "wireguard-tools"
+        state: present
+  when:
+    - wireguard_rockylinux8_installation_method == "dkms"
+