r/collectd: Add custom types database

All values sent to *collectd* must have an associated type.  The type
defines the acceptable range of values.  Types are defined in a simple
text file database.  *collectd* loads all of the databases specified by
`TypesDB` directives in its configuration file.  When configuring a
custom types database, the default database needs to be specified
explicitly; it will not be loaded automatically if there are any
`TypesDB` directives in the configuration.

roles/collectd/files/collectd-typesdb.conf

@@ -0,0 +1,2 @@
+TypesDB "/usr/share/collectd/types.db"
+TypesDB "/etc/collectd/types.db.local"

roles/collectd/files/types.db.local

@@ -0,0 +1 @@
+version value:GAUGE:0:1

roles/collectd/tasks/main.yml

@@ -23,6 +23,33 @@
   tags:
   - collectd-config
 
+- name: ensure collectd directory exists
+  file:
+    path: /etc/collectd
+    mode: 'u=rwx,go=rx'
+    state: directory
+  tags:
+  - collectd-config
+  - collectd-typesdb
+- name: ensure collectd local types.db exists
+  copy:
+    src: types.db.local
+    dest: /etc/collectd/
+    mode: 'u=rw,go=r'
+  notify: restart collectd
+  tags:
+  - collectd-config
+  - collectd-typesdb
+- name: ensure collectd types.db is configured
+  copy:
+    src: collectd-typesdb.conf
+    dest: /etc/collectd.d/typesdb.conf
+    mode: 'u=rw,go=r'
+  notify: restart collectd
+  tags:
+  - collectd-config
+  - collectd-typesdb
+
 - name: ensure collectd unixsock plugin is configured
   template:
     src: collectd-unixsock.conf.j2