Add ability to force-install some systemd packages to make the flow working

Author: Korulag

alts/shared/models.py

@@ -318,6 +318,10 @@ def __init__(self, **data):
         'kernel',
         'dnf',
     ]
+    force_install_pkgs: List[str] = [
+        'systemd-standalone-sysusers',
+        'systemd-standalone-tmpfiles',
+    ]
     keepalive_interval: int = 30  # unit in seconds
     commands_exec_timeout: int = 30  # unit in seconds
     provision_timeout: int = 1200  # 20 minutes in seconds

alts/worker/runners/base.py

@@ -876,11 +876,13 @@ def install_package_no_log(
             package_version=package_version,
             package_epoch=package_epoch,
         )
+        force_install = package_name in CONFIG.force_install_pkgs
 
         self._logger.info(
-            'Installing %s on %s...',
+            'Installing %s on %s...%s',
             full_pkg_name,
             self.env_name,
+            ' (force install due to known conflicts)' if force_install else '',
         )
         cmd_args = [
             '-i',
@@ -892,6 +894,8 @@ def install_package_no_log(
             f'pkg_version={package_version}',
             '-e',
             f'dist_name={dist_name}',
+            '-e',
+            f'force_install={force_install}',
         ]
         if module_name and module_stream and module_version:
             cmd_args.extend([

resources/roles/install_uninstall/tasks/main.yml

@@ -116,9 +116,36 @@
     name: "{{ pkg_name }}"
     state: present
   args: "{{ dnf_args }}"
-  when: ansible_facts.os_family == 'RedHat'
+  when:
+    - ansible_facts.os_family == 'RedHat'
+    - not (force_install | default(false) | bool)
+  tags:
+    - install_package
+
+- name: Force install RPM package (bypass conflicts)
+  when:
+    - ansible_facts.os_family == 'RedHat'
+    - force_install | default(false) | bool
   tags:
     - install_package
+  block:
+    - name: Create temporary directory for forced RPM download
+      ansible.builtin.file:
+        path: /tmp/force_install
+        state: directory
+
+    - name: Download RPM package
+      ansible.builtin.shell:
+        cmd: "dnf download --destdir=/tmp/force_install {{ pkg_name }}"
+
+    - name: Install downloaded RPM bypassing conflicts
+      ansible.builtin.shell:
+        cmd: "rpm -i --nodeps --force /tmp/force_install/*.rpm"
+
+    - name: Clean up downloaded RPMs
+      ansible.builtin.file:
+        path: /tmp/force_install
+        state: absent
 
 - name: Install DEB package
   ansible.builtin.apt: