Add standalone munin-node role

ansible/host_vars/lovelace/munin.yml

@@ -0,0 +1,25 @@
+---
+munin_node__plugins:
+  # SpamAssassin
+  - src: spamstats
+  # Nginx
+  - src: nginx_request
+  - src: nginx_status
+  # Postfix
+  - src: postfix_mailstats
+  - src: postfix_mailqueue
+  - src: postfix_mailvolume
+  # PostgreSQL
+  - src: postgres_size_
+    dest: postgres_size_metricity
+  - src: postgres_size_
+    dest: postgres_size_site
+  - src: postgres_size_
+    dest: postgres_size_ALL
+  - src: postgres_xlog
+  - src: postgres_autovacuum
+  - src: postgres_bgwriter
+  - src: postgres_checkpoints
+  - src: postgres_connections_db
+  - src: postgres_users
+  - src: postgres_xlog

ansible/playbook.yml

@@ -4,6 +4,7 @@
     - common
     - pydis-mtls
     - wireguard
+    - munin-node
 
 - name: Deploy services to Netcup nodes
   hosts: netcup

ansible/roles/munin-node/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+munin_node__plugin_packages: "{{ ('databases' in group_names) | ternary(['libdbd-pg-perl'], []) }}"
+munin_node__plugins: []

ansible/roles/munin/handlers/main.yml → ansible/roles/munin-node/handlers/main.yml

@@ -3,3 +3,5 @@
   service:
     name: munin-node
     state: restarted
+  tags:
+    - role::munin-node

ansible/roles/munin-node/tasks/main.yml

@@ -0,0 +1,74 @@
+---
+- name: Install munin-node & plugin packages
+  package:
+    name: "{{ ['munin-node'] + munin_node__plugin_packages }}"
+    state: present
+  tags:
+    - role::munin-node
+
+- name: Template munin-node configuration file
+  template:
+    src: munin-node.conf.j2
+    dest: /etc/munin/munin-node.conf
+    owner: root
+    group: root
+    mode: "0444"
+  tags:
+    - role::munin-node
+  notify:
+    - Restart munin-node service
+
+- name: Template munin plugin configuration file
+  template:
+    src: plugin.conf.j2
+    dest: /etc/munin/plugin-conf.d/custom
+    owner: root
+    group: root
+    mode: "0444"
+  tags:
+    - role::munin-node
+  notify:
+    - Restart munin-node service
+
+- name: Enable non-default munin plugins
+  file:
+    src: "/usr/share/munin/plugins/{{ item.src }}"
+    dest: "/etc/munin/plugins/{{ item.dest | default(item.src) }}"
+    state: link
+  loop: "{{ munin_node__plugins }}"
+  tags:
+    - role::munin-node
+  notify:
+    - Restart munin-node service
+
+- name: Copy custom munin plugins
+  template:
+    src: "{{ item }}"
+    # Split two levels of file extensions
+    dest: "/etc/munin/plugins/{{ item | basename | splitext | first | splitext | first }}"
+    owner: root
+    group: root
+    mode: "0555"
+  loop_control:
+    # I love representing data modification logic in YAML!
+    label: "{{ item | basename | splitext | first | splitext | first }}"
+  with_fileglob: "../templates/plugins/{{ ansible_hostname }}/*"
+  tags:
+    - role::munin-node
+
+- name: Disable some unneeded plugins
+  file:
+    path: "/etc/munin/plugins/{{ item }}"
+    state: absent
+  loop:
+    - squeezebox_albums
+    - squeezebox_artists
+    - squeezebox_genres
+    - squeezebox_signalstrength
+    - squeezebox_songs
+    - squeezebox_volume
+    - squeezebox_years
+  tags:
+    - role::munin-node
+  notify:
+    - Restart munin-node service

ansible/roles/munin/tasks/main.yml

@@ -20,93 +20,3 @@
     mode: "0444"
   tags:
     - role::munin
-
-- name: Template munin-node configuration file
-  template:
-    src: munin-node.conf.j2
-    dest: /etc/munin/munin-node.conf
-    owner: root
-    group: root
-    mode: "0444"
-  tags:
-    - role::munin
-  notify:
-    - Restart munin-node service
-
-- name: Template munin plugin configuration file
-  template:
-    src: plugin.conf.j2
-    dest: /etc/munin/plugin-conf.d/custom
-    owner: root
-    group: root
-    mode: "0444"
-  tags:
-    - role::munin
-  notify:
-    - Restart munin-node service
-
-- name: Enable non-default munin plugins
-  file:
-    src: "/usr/share/munin/plugins/{{ item.src }}"
-    dest: "/etc/munin/plugins/{{ item.dest | default(item.src) }}"
-    state: link
-  loop:
-    # SpamAssassin
-    - src: spamstats
-    # Nginx
-    - src: nginx_request
-    - src: nginx_status
-    # Postfix
-    - src: postfix_mailstats
-    - src: postfix_mailqueue
-    - src: postfix_mailvolume
-    # PostgreSQL
-    - src: postgres_size_
-      dest: postgres_size_metricity
-    - src: postgres_size_
-      dest: postgres_size_site
-    - src: postgres_size_
-      dest: postgres_size_ALL
-    - src: postgres_xlog
-    - src: postgres_autovacuum
-    - src: postgres_bgwriter
-    - src: postgres_checkpoints
-    - src: postgres_connections_db
-    - src: postgres_users
-    - src: postgres_xlog
-  tags:
-    - role::munin
-  notify:
-    - Restart munin-node service
-
-- name: Copy custom munin plugins
-  template:
-    src: "{{ item }}"
-    # Split two levels of file extensions
-    dest: "/etc/munin/plugins/{{ item | basename | splitext | first | splitext | first }}"
-    owner: root
-    group: root
-    mode: "0555"
-  loop_control:
-    # I love representing data modification logic in YAML!
-    label: "{{ item | basename | splitext | first | splitext | first }}"
-  with_fileglob: "../templates/plugins/*"
-  tags:
-    - role::munin
-
-- name: Disable some unneeded plugins
-  file:
-    path: "/etc/munin/plugins/{{ item }}"
-    state: absent
-  loop:
-    - squeezebox_albums
-    - squeezebox_artists
-    - squeezebox_genres
-    - squeezebox_signalstrength
-    - squeezebox_songs
-    - squeezebox_volume
-    - squeezebox_years
-  tags:
-    - role::munin
-  notify:
-    - Restart munin-node service