[WIP] Document Journald on docker

Author: belimawr

packages/journald/changelog.yml

@@ -1,5 +1,9 @@
 # newer versions go on top
 - version: "1.1.2"
+  changes:
+    - description: Update documentation to mention the requirements for reading Journald logs.
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/99999
   changes:
     - description: Update Kibana requirement to support 9.x.
       type: enhancement

packages/journald/docs/README.md

@@ -5,6 +5,14 @@ The journald input reads the log data and the metadata associated with it.
 
 The journald input is available on Linux systems with `systemd` installed.
 
+To read Journald logs from within a container, you need to use the
+[`elastic-agent-complete`](https://www.elastic.co/docs/reference/fleet/install-elastic-agents#elastic-agent-complete-flavor)
+Docker image that contains the `jouranlctl` binary. Journal files can have breaking changes making it
+impossible to read files generated by a newer versions of
+Journald. Ensure the jounral files you are reading were generated by
+a version equal or older than the `journalctl` shipped with the Docker
+image.x
+
 An example event looks as follows:
 
 ```json

packages/journald/manifest.yml

@@ -1,7 +1,7 @@
 format_version: 3.3.0
 name: journald
 title: "Custom Journald logs"
-version: 1.1.2
+version: 1.1.3
 description: Collect logs from journald with Elastic Agent.
 type: input
 categories:

packages/system/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.68.2"
+  changes:
+    - description: Update documentation to mention the requirements for reading Journald logs.
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/99999
 - version: "1.68.1"
   changes:
     - description: Change security pipeline to be defensive against different data types.

packages/system/docs/README.md

@@ -38,6 +38,14 @@ Each data stream collects different kinds of metric data, which may require dedi
 to be fetched and which may vary across operating systems.
 Details on the permissions needed for each data stream are available in the [Metrics reference](#metrics-reference).
 
+To read Journald logs from within a container, you need to use the
+[`elastic-agent-complete`](https://www.elastic.co/docs/reference/fleet/install-elastic-agents#elastic-agent-complete-flavor)
+Docker image that contains the `jouranlctl` binary. Journal files can have breaking changes making it
+impossible to read files generated by a newer versions of
+Journald. Ensure the jounral files you are reading were generated by
+a version equal or older than the `journalctl` shipped with the Docker
+image.
+
 ## Setup
 
 For step-by-step instructions on how to set up an integration, see the

packages/system/manifest.yml

@@ -1,7 +1,7 @@
 format_version: 3.0.2
 name: system
 title: System
-version: "1.68.1"
+version: "1.68.2"
 description: Collect system logs and metrics from your servers with Elastic Agent.
 type: integration
 categories: