Update files for matrix-appservice-irc: add the common section "Troubleshooting"

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-playbook-bridge-appservice-irc.md

@@ -89,3 +89,22 @@ ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,ensure-matrix-use
 ## Usage
 
 To use the bridge, you need to start a chat with `@irc_bot:example.com` (where `example.com` is your base domain, not the `matrix.` domain).
+
+## Troubleshooting
+
+As with all other services, you can find the logs in [systemd-journald](https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html) by logging in to the server with SSH and running `journalctl -fu matrix-appservice-irc`.
+
+### Configuring for logging
+
+The default logging level for this component is `debug`, and the log is output to the console only. If you want to change the verbosity or enable logging to a file, add the following configuration to your `vars.yml` file (adapt to your needs) and re-run the playbook:
+
+```yaml
+matrix_appservice_irc_configuration_extension_yaml: |
+  logging:
+    # Level to log on console/logfile. One of error|warn|info|debug
+    level: "debug"
+    # The file location to log to. This is relative to the project directory.
+    logfile: "debug.log"
+    # The file location to log errors to. This is relative to the project directory.
+    errfile: "errors.log"
+```

roles/custom/matrix-bridge-appservice-irc/templates/config.yaml.j2

@@ -78,8 +78,7 @@ ircService:
     level: "debug"
     # The file location to log to. This is relative to the project directory.
     #logfile: "debug.log"
-    # The file location to log errors to. This is relative to the project
-    # directory.
+    # The file location to log errors to. This is relative to the project directory.
     #errfile: "errors.log"
     # Whether to log to the console or not.
     toConsole: true