
= Configuration Tester
:description: Learn how the configuration tester can help you identify configuration problems in {page-component-title}.

To identify configuration problems, use the configuration tester located in `$\{OPENNMS_HOME}/bin/`.
You can use the tool when {page-component-title} is either running or stopped.

Use the `config-tester` command to check configuration files.
The tool prints issues to `output.log`.

== Parameters

The following parameters are available for the configuration tester:

[options="autowidth"]
|===
| Parameter | Description

| -a, --all
| Check all supported configuration files.

| -h, --help
| Print the tool's help guide and exit.

| -i, --ignore-unknown
| Ignore unknown configuration files and continue processing.

| -l, --list
| List supported configuration files and exit.

| -v, --verbose
| List each configuration file as it is tested.
|===
