Adds support for configuring chrony

Chrony is already bundled in the generic cloud image so we just have to
configure it. For this I am using an off the shelf role. I've chosen
mrlesmithjr.chrony as it is also used in kayobe (so we can share
development effort)

ansible/bootstrap.yml

@@ -52,6 +52,14 @@
     - import_role:
         name: proxy
 
+- hosts: chrony
+  gather_facts: false
+  tags: chrony
+  become: yes
+  tasks:
+    - import_role:
+        name: chrony
+
 - hosts: cluster
   gather_facts: false
   become: yes

ansible/roles/compute_init/README.md

@@ -40,6 +40,7 @@ it also requires an image build with the role name added to the
 | bootstrap.yml            | (wait for ansible-init) | Not relevant during boot        | n/a                 |
 | bootstrap.yml            | resolv_conf             | Fully supported                 | No                  |
 | bootstrap.yml            | etc_hosts               | Fully supported                 | No                  |
+| bootstrap.yml            | chrony                  | Fully supported                 | No                  |
 | bootstrap.yml            | proxy                   | None at present                 | No                  |
 | bootstrap.yml            | (/etc permissions)      | None required - use image build | No                  |
 | bootstrap.yml            | (ssh /home fix)         | None required - use image build | No                  |

ansible/roles/compute_init/files/compute-init.yml

@@ -14,6 +14,7 @@
     enable_manila: "{{ os_metadata.meta.manila | default(false) | bool }}"
     enable_basic_users: "{{ os_metadata.meta.basic_users | default(false) | bool }}"
     enable_eessi: "{{ os_metadata.meta.eessi | default(false) | bool }}"
+    enable_chrony: "{{ os_metadata.meta.chrony | default(false) | bool }}"
 
     # TODO: "= role defaults" - could be moved to a vars_file: on play with similar precedence effects
     resolv_conf_nameservers: []
@@ -97,6 +98,10 @@
 
       # TODO: should /mnt/cluster now be UNMOUNTED to avoid future hang-ups?
 
+    - name: Run chrony role
+      ansible.builtin.include_role:
+        name: mrlesmithjr.chrony
+
     - name: Configure resolve.conf
       block:
         - name: Set nameservers in /etc/resolv.conf

ansible/roles/compute_init/tasks/install.yml

@@ -36,6 +36,8 @@
       dest: tasks/tuned.yml
     - src: ../../stackhpc.nfs/tasks/nfs-clients.yml
       dest: tasks/nfs-clients.yml
+    - src: ../../mrlesmithjr.chrony
+      dest: roles/
 
 - name: Add filter_plugins to ansible.cfg
   lineinfile:

docs/configuration.md

@@ -0,0 +1,25 @@
+# Configuration
+
+This page provides configuration snippets for various services.
+
+## Chrony
+
+Use variables from the [mrlesmithjr.chrony](https://github.com/mrlesmithjr/ansible-chrony) role.
+
+For example in: `environments/<environment>/inventory/group_vars/all/chrony`:
+
+```
+---
+chrony_ntp_servers:
+  - server: ntp-0.example.org
+    options:
+      - option: iburst
+      - option: minpoll
+        val: 8
+  - server: ntp-1.example.org
+    options:
+      - option: iburst
+      - option: minpoll
+        val: 8
+
+```

requirements.yml

@@ -22,6 +22,8 @@ roles:
   - src: https://github.com/stackhpc/ansible-role-os-manila-mount.git
     name: stackhpc.os-manila-mount
     version: v25.1.1
+  - src: mrlesmithjr.chrony
+    version: v0.1.4
 
 collections:
   - name: containers.podman