apache: enable Munin plugins and CGI mode

apache/handlers/main.yml

@@ -8,3 +8,8 @@
   service:
     name: apache2
     state: reloaded
+
+- name: restart munin-node
+  service:
+    name: munin-node
+    state: restarted

apache/tasks/main.yml

@@ -209,6 +209,16 @@
 - include: phpmyadmin.yml
   when: _default_index.stat.exists
 
+- name: Check if Munin plugins exists
+  stat:
+    path: /etc/munin/plugins/
+  register: _munin_plugins
+  check_mode: no
+  tags:
+  - apache
+
+- include: munin.yml
+  when: _munin_plugins.stat.exists
 
 # - block:
 #   - name: generate random string for serverstatus suffix

apache/tasks/munin.yml

@@ -0,0 +1,24 @@
+---
+
+- name: install packages for Apache and Munin
+  apt:
+    name: libapache2-mod-fcgid
+    state: installed
+  notify: reload apache
+  tags:
+  - apache
+  - munin
+
+- name: install munin plugins
+  file:
+    src: "/etc/munin/plugins/{{ item }}"
+    dest: "/usr/share/munin/plugins/{{ item }}"
+    state: link
+  with_items:
+  - apache_accesses
+  - apache_processes
+  - apache_volume
+  notify: restart munin-node
+  tags:
+  - apache
+  - munin

apache/templates/evolinux-default.conf.j2

@@ -53,6 +53,25 @@
         Include /etc/apache2/private_ipaddr_whitelist.conf
     </Directory>
 
+    # Munin cgi
+    # Ensure we can run (fast)cgi scripts
+    ScriptAlias /munin-cgi/munin-cgi-graph /usr/lib/munin/cgi/munin-cgi-graph
+    <Location /munin-cgi/munin-cgi-graph>
+        Options +ExecCGI
+        <IfModule mod_fcgid.c>
+            SetHandler fcgid-script
+        </IfModule>
+        <IfModule mod_fastcgi.c>
+            SetHandler fastcgi-script
+        </IfModule>
+        <IfModule !mod_fastcgi.c>
+            <IfModule !mod_fcgid.c>
+                SetHandler cgi-script
+            </IfModule>
+        </IfModule>
+        Allow from all
+    </Location>
+
     # For CGI Scripts. We need to set Directory directive as ScriptAlias take precedence.
     ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
     <Directory /usr/lib/cgi-bin>