postfix metadata.yaml - add links and some descriptions (#15544)

* add links and some descriptions

1 files changed, 79 insertions, 33 deletions

diff --git a/collectors/python.d.plugin/postfix/metadata.yaml b/collectors/python.d.plugin/postfix/metadata.yaml
index 0cb0da5742..7fc9de8936 100644
--- a/collectors/python.d.plugin/postfix/metadata.yaml
+++ b/collectors/python.d.plugin/postfix/metadata.yaml
@@ -1,53 +1,98 @@
+# yamllint disable rule:line-length
+---
 meta:
   plugin_name: python.d.plugin
   module_name: postfix
   monitored_instance:
     name: Postfix
-    link: ''
+    link: https://www.postfix.org/
     categories:
-    - data-collection.mail-servers
-    icon_filename: 'postfix.png'
+      - data-collection.mail-servers
+    icon_filename: "postfix.png"
   related_resources:
     integrations:
       list: []
   info_provided_to_referring_integrations:
-    description: ''
-  keywords: []
+    description: ""
+  keywords:
+    - postfix
+    - mail
+    - mail server
   most_popular: false
 overview:
   data_collection:
-    metrics_description: 'Keep an eye on Postfix metrics for efficient mail server operations. Improve your mail server performance with Netdata''s real-time metrics and built-in alerts.'
-    method_description: ''
+    metrics_description: >
+      Keep an eye on Postfix metrics for efficient mail server operations. 
+
+      Improve your mail server performance with Netdata's real-time metrics and built-in alerts.
+    method_description: >
+      Monitors MTA email queue statistics using [postqueue](http://www.postfix.org/postqueue.1.html) tool.
   supported_platforms:
     include: []
     exclude: []
   multi_instance: true
   additional_permissions:
-    description: ''
+    description: >
+      Postfix has internal access controls that limit activities on the mail queue. By default, all users are allowed to view
+      the queue. If your system is configured with stricter access controls, you need to grant the `netdata` user access to
+      view the mail queue. In order to do it, add `netdata` to `authorized_mailq_users` in the `/etc/postfix/main.cf` file.
+
+      See the `authorized_mailq_users` setting in
+      the [Postfix documentation](https://www.postfix.org/postconf.5.html) for more details.
   default_behavior:
     auto_detection:
-      description: ''
+      description: "The collector executes  `postqueue -p` to get Postfix queue statistics."
     limits:
-      description: ''
+      description: ""
     performance_impact:
-      description: ''
+      description: ""
 setup:
   prerequisites:
     list: []
   configuration:
     file:
-      name: ''
-      description: ''
+      name: ""
+      description: ""
     options:
-      description: ''
+      description: |
+        There are 2 sections:
+
+        * Global variables
+        * One or more JOBS that can define multiple different instances to monitor.
+
+        The following options can be defined globally: priority, penalty, autodetection_retry, update_every, but can also be defined per JOB to override the global values.
+
+        Additionally, the following collapsed table contains all the options that can be configured inside a JOB definition.
+
+        Every configuration JOB starts with a `job_name` value which will appear in the dashboard, unless a `name` parameter is specified.
       folding:
-        title: ''
+        title: Config options
         enabled: true
-      list: []
+      list:
+        - name: update_every
+          description: Sets the default data collection frequency.
+          default_value: 1
+          required: false
+        - name: priority
+          description: Controls the order of charts at the netdata dashboard.
+          default_value: 60000
+          required: false
+        - name: autodetection_retry
+          description: Sets the job re-check interval in seconds.
+          default_value: 0
+          required: false
+        - name: penalty
+          description: Indicates whether to apply penalty to update_every in case of failures.
+          default_value: yes
+          required: false
+        - name: name
+          description: Job name. This value will overwrite the `job_name` value. JOBS with the same name are mutually exclusive. Only one of them will be allowed running at any time. This allows autodetection to try several alternatives and pick the one that works.
+          default_value: ""
+          required: false
     examples:
       folding:
         enabled: true
-        title: ''
+        title: ""
       list: []
 troubleshooting:
   problems:
@@ -60,19 +105,20 @@ metrics:
   description: ""
   availability: []
   scopes:
-  - name: global
-    description: ""
-    labels: []
-    metrics:
-    - name: postfix.qemails
-      description: Postfix Queue Emails
-      unit: "emails"
-      chart_type: line
-      dimensions:
-      - name: emails
-    - name: postfix.qsize
-      description: Postfix Queue Emails Size
-      unit: "KiB"
-      chart_type: area
-      dimensions:
-      - name: size
+    - name: global
+      description: |
+        These metrics refer to the entire monitored application.
+      labels: []
+      metrics:
+        - name: postfix.qemails
+          description: Postfix Queue Emails
+          unit: "emails"
+          chart_type: line
+          dimensions:
+            - name: emails
+        - name: postfix.qsize
+          description: Postfix Queue Emails Size
+          unit: "KiB"
+          chart_type: area
+          dimensions:
+            - name: size