From 1b0ee50d8d9da411eb4e0960b181ce1390446c4e Mon Sep 17 00:00:00 2001
From: Jeremy Lecour <jlecour@evolix.fr>
Date: Thu, 23 Nov 2017 08:39:58 +0100
Subject: [PATCH] [WIP] configure munin graphs for HAProxy

---
 haproxy/README.md                     |  3 ++-
 haproxy/defaults/main.yml             |  6 ++++++
 haproxy/tasks/main.yml                |  3 +++
 haproxy/tasks/munin.yml               | 23 +++++++++++++++++++++++
 haproxy/templates/munin/haproxy_ng.j2 |  8 ++++++++
 5 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 haproxy/tasks/munin.yml
 create mode 100644 haproxy/templates/munin/haproxy_ng.j2

diff --git a/haproxy/README.md b/haproxy/README.md
index 9f597baa..0f2a4982 100644
--- a/haproxy/README.md
+++ b/haproxy/README.md
@@ -8,7 +8,8 @@ Everything is in the `tasks/main.yml` file.
 
 ## Available variables
 
-* `haproxy_jessie_backports` : on Debian Jessie, we can prefer v1.7 from backports (default: `False`)
+* `haproxy_jessie_backports` : on Debian Jessie, we can prefer v1.7 from backports (default: `False`) ;
+* `haproxy_munin` : install and configure Munin for HAProxy stats (default: `False`).
 
 ## Configuration templates
 
diff --git a/haproxy/defaults/main.yml b/haproxy/defaults/main.yml
index ea4a8e38..a05c73fd 100644
--- a/haproxy/defaults/main.yml
+++ b/haproxy/defaults/main.yml
@@ -1,3 +1,9 @@
 ---
 
 haproxy_jessie_backports: False
+
+haproxy_munin: False
+
+haproxy_status_url: "http://localhost/haproxy-status;csv;norefresh"
+haproxy_status_login: Null
+haproxy_status_passwd: Null
diff --git a/haproxy/tasks/main.yml b/haproxy/tasks/main.yml
index 054aec1a..3eba18a0 100644
--- a/haproxy/tasks/main.yml
+++ b/haproxy/tasks/main.yml
@@ -34,3 +34,6 @@
   - config
 
 - include: nagios.yml
+
+- include: munin.yml
+  when: haproxy_munin
diff --git a/haproxy/tasks/munin.yml b/haproxy/tasks/munin.yml
new file mode 100644
index 00000000..dfea8631
--- /dev/null
+++ b/haproxy/tasks/munin.yml
@@ -0,0 +1,23 @@
+---
+
+- include_role: munin
+
+- name: Enable haproxy_ng munin plugin
+  file:
+    src: "/usr/local/share/munin/plugins/haproxy_ng"
+    dest: "/etc/munin/plugins/haproxy_ng"
+    state: link
+  notify: restart munin-node
+  tags:
+    - haproxy
+    - munin
+
+- name: Copy Munin plugin conf
+  template:
+    src: munin/haproxy_ng.j2
+    dest: /etc/munin/plugin-conf.d/haproxy_ng
+    mode: "0644"
+  notify: restart munin-node
+  tags:
+    - haproxy
+    - munin
diff --git a/haproxy/templates/munin/haproxy_ng.j2 b/haproxy/templates/munin/haproxy_ng.j2
new file mode 100644
index 00000000..d74f2d8d
--- /dev/null
+++ b/haproxy/templates/munin/haproxy_ng.j2
@@ -0,0 +1,8 @@
+[haproxy_*]
+env.url {{ haproxy_status_url }}
+{% if haproxy_status_login %}
+env.username {{ haproxy_status_login }}
+{% endif %}
+{% if haproxy_status_passwd %}
+env.password {{ haproxy_status_passwd }}
+{% endif %}