Add general issue workflow, closes https://github.com/opnsense/docs/issues/208

source/troubleshooting.rst

@@ -10,8 +10,60 @@ Generally it's always good to check your logs (:menuselection:`System --> Log Fi
 but sometimes more help is needed.
 
 
-Within this chapter we collect some of the common mistakes we have seen over the years, combined with pointers
-where to look for solutions.
+General issue workflow
+...........................
+
+Before reporting issues, please make sure yours still exists on the latest version.
+We generally advice to check the existing `issues <https://github.com/opnsense/core/issues>`__ and our `forum <https://forum.opnsense.org/>`__
+before reporting new ones.
+
+In case your issue was introduced after a (minor) upgrade, you can use `opnsense-revert <https://docs.opnsense.org/manual/opnsense_tools.html#opnsense-revert>`__
+to downgrade specific packages installed on the system.
+
+Using the firmware section (:menuselection:`System --> Firmware --> Updates`) you can perform a health check on the system, in
+the right top corner of the page is a button named **Audit now** which can be collapsed into **Health**.
+When clicked this outputs something like the following:
+
+.. code-block:: text
+
+    ***GOT REQUEST TO AUDIT HEALTH***
+    >>> Check installed kernel version
+    Version 19.7.3 is correct.
+    >>> Check for missing or altered kernel files
+    No problems detected.
+    >>> Check installed base version
+    Version 19.7.3 is correct.
+    >>> Check for missing or altered base files
+    No problems detected.
+    >>> Check for and install missing package dependencies
+    Checking all packages: .......... done
+    >>> Check for missing or altered package files
+    Checking all packages: ....
+    opnsense-19.7.4_1: checksum mismatch for /usr/local/etc/inc/auth.inc
+    Checking all packages...
+    Checking all packages......... done
+    ***DONE***
+
+When mismatches are reported, you can reinstall affected packages in the **Packages** section of the firmware screen.
+In the case above you would reinstall opnsense, since the :code:`auth.inc` looks tainted.
+
+.. Note::
+
+    We advise to include the output of the health check if it seems to report issues when creating bug reports on GitHub.
+
+
+.. Tip::
+
+    Always try to be precise in issue reports, either if their about a possible bug or a feature request, it helps if
+    intentions are absolutely clear. Our GitHub repositories use templates which should guide you through, we kindly
+    ask you to use them (tickets not using our templates are treated as low priority).
+
+
+Topics
+...........................
+
+Some of the common mistakes we have seen over the years, combined with pointers where to look for solutions can
+be found in the list below.
 
 .. toctree::
    :maxdepth: 2