DOCTEAM- 2167 Cockpit Applications (#644)

* Fixed validation errors.
* Update concepts/cockpit-applications.xml

Co-authored-by: lvicoun <JSindelarova@suse.com>
Co-authored-by: Daria Vladykina <daria.vladykina@suse.com>

Author: 3 people

articles/cockpit.asm.xml

@@ -21,6 +21,7 @@ xmlns="http://docbook.org/ns/docbook">
 <resource href="../concepts/cockpit-network-bonds.xml" xml:id="_cockpit-network-bonds"/> 
 <resource href="../concepts/cockpit-selinux.xml" xml:id="_cockpit-selinux"/> 
 <resource href="../concepts/cockpit-system-update.xml" xml:id="_cockpit-system-update"/>
+<resource href="../concepts/cockpit-applications.xml" xml:id="_cockpit-applications"/>
 <resource href="../concepts/cockpit-packages.xml" xml:id="_cockpit-packages"/>
 <resource href="../concepts/cockpit-virtual-machines.xml" xml:id="_cockpit-virtual-machines"/>
 <!-- glue -->
@@ -449,6 +450,7 @@ different levels.</para>
 </module>
 <module renderas="section" resourceref="_cockpit-creating-timers"/>
 </module>
+<module renderas="section" resourceref="_cockpit-applications"/>
 <module renderas="section" resourceref="_cockpit-packages"/>
 <module renderas="section" resourceref="_cockpit-manage-subscriptions"/>
 <module renderas="section" resourceref="_cockpit-selinux">

concepts/cockpit-applications.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE topic
+[
+  <!ENTITY % entities SYSTEM "../common/generic-entities.ent">
+    %entities;
+]>
+<!-- refers to legacy doc: <add github link to legacy doc piece, if applicable> -->
+<!-- point back to this document with a similar comment added to your legacy doc piece -->
+<!-- refer to README.md for file and id naming conventions -->
+<!-- metadata is dealt with on the assembly level -->
+<topic xml:id="concept-cockpit-applications"
+ role="concept" xml:lang="en"
+ xmlns="http://docbook.org/ns/docbook" version="5.2"
+ xmlns:its="http://www.w3.org/2005/11/its"
+ xmlns:xi="http://www.w3.org/2001/XInclude"
+ xmlns:xlink="http://www.w3.org/1999/xlink"
+ xmlns:trans="http://docbook.org/ns/transclusion">
+ <info> <title>Managing applications in &cockpit;</title> <meta name="maintainer" content="shalaka.harne@suse.com" its:translate="no"/> <abstract> <para>The &cockpit; Web interface supports modularity through plug-in applications. This section describes how to view, navigate and remove these applications using the <guilabel>Applications</guilabel> page. </para> </abstract> </info>
+<para>&cockpit; applications (or modules) extend the functionality of the Web interface. Adding an application creates a new entry in the sidebar, allowing you to manage complex system services—such as firewalls, virtual machines or SELinux—through a visual interface rather than the command line.</para>
+  <para>Commonly installed modules include: <guimenu>Networking</guimenu>, <guimenu>Software Updates (Packages)</guimenu>, <guimenu>Repositories</guimenu> and <guimenu>SELinux</guimenu>.</para>
+<section><title>Viewing and navigating applications</title>
+<para>You can access your installed modules by clicking the <guimenu>Applications</guimenu> tab in the left-hand navigation pane and clicking the application's name to switch to its dedicated management tab. To uninstall a module, locate the application in the list and click the <guimenu>Remove</guimenu> button.</para>
+</section>
+<section><title>Troubleshooting missing applications</title>
+<para>If the <guilabel>Applications</guilabel> page is empty, or if a newly installed module does not appear in the list, you may need to refresh the &cockpit; service.</para>
+<para>Restart the socket: Run the following command in your terminal: </para>
+  <screen>&prompt.sudo; systemctl restart cockpit.socket</screen>
+<para>Check for service failures: If a specific service fails to start, the <guilabel>Applications</guilabel> page will display the relevant systemd error logs directly on the screen to assist with debugging.</para>
+</section></topic>

tasks/cockpit-manage-subscriptions.xml

@@ -16,7 +16,7 @@
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:trans="http://docbook.org/ns/transclusion">
   <info>
-    <title>Managing Subscriptions using &cockpit;</title>
+    <title>Managing subscriptions using &cockpit;</title>
     <meta name="maintainer" content="shalaka.harne@suse.com" its:translate="no"/>
     <abstract>
       <para>