add doc page for haproxy_status

docs/20_Checks/_index.md

@@ -23,7 +23,7 @@ There is one include script used by all checks:
 * [check_fs_errors](check_fs_errors.md)
 * [check_fs_writable](check_fs_writable.md)
 * [check_haproxy_health](check_haproxy_health.md)
-* check_haproxy_status
+* [check_haproxy_status](check_haproxy_status.md)
 * check_memory
 * check_mysqlserver
 * check_netio

docs/20_Checks/check_haproxy_health.md

-# Check filesystem errors
+# Check HA-Proxy health
 
 ## Introduction
 

docs/20_Checks/check_haproxy_status.md

+# Check HA-Proxy Status
+
+## Introduction
+
+**check_haproxy_health** show status and connections count on frontend and backend.
+
+## Syntax
+
+```txt
+______________________________________________________________________
+
+CHECK_HAPROXY_STATUS
+v1.8
+
+(c) Institute for Medical Education - University of Bern
+Licence: GNU GPL 3
+
+https://os-docs.iml.unibe.ch/icinga-checks/Checks/check_haproxy_status.html
+______________________________________________________________________
+
+Check HA Proxy statistics on frontend and backend.
+It shows if the status is OPEN or UP and show counts of current connectons.
+
+The plugin reads /etc/haproxy/haproxy.cfg to detect the required statistics url and get
+csv data.
+It requires wget to handle the http request.
+
+Non OK values occur:
+  UNKNOWN - if /etc/haproxy/haproxy.cfg cannot be read
+          - haproxy is not in http mode
+          - the url wasn't detected
+          - the detected status url doesn't send a response
+  ERROR - a frontend status is not OPEN
+        - a backend status is not UP
+
+The plugin sends performance data.
+
+SYNTAX:
+check_haproxy_status [-h]
+
+OPTIONS:
+
+    -h or --help   show this help.
+
+EXAMPLE:
+
+    check_haproxy_status
+
+```
+
+### Parameters
+
+(none)
+
+## Examples
+
+`$ check_haproxy_status` returns
+
+```txt
+OK: FRONT: OPEN OPEN OPEN  - 2 (max: 30010) .. BACK: UP UP UP  - 0 (max: 3001)
+FRONTEND - 2 BACKEND - 0 FRONTEND - 0 FRONTEND - 0 couchdb-0.example.com - 0 BACKEND - 0 couchdb-0.example.com - 0 couchdb-1.example.com - 0 couchdb-2.example.com - 0 BACKEND - 0  |frontend=2;; frontend-max=30010;; frontend-free=30008;; backend=0;; backend-max=3001;; backend-free=3001;; 
+```