With a lot of configuration possibilities, manually editing config.php means it's not uncommon that mistakes get made. It's also impossible to validate user input in config.php when you're just using a text editor :)
So, to try and help with some of the general issues people come across we've put together a simple validation tool which at present will:
- Validate config.php from a php perspective including whitespace where it shouldn't be.
- Connection to your MySQL server to verify credentials.
- Checks if you are running the older alerting system.
- Checks your rrd directory setup if not running rrdcached.
- Checks disk space for where /opt/librenms is installed.
- Checks location to fping
- Tests MySQL strict mode being enabled
- Tests for files not owned by librenms user (if configured)
Optionally you can also pass -m and a module name for that to be tested. Current modules are:
- mail - This will validate your mail transport configuration.
- dist-poller - This will test your distributed poller configuration.
- rrdcheck - This will test your rrd files to see if they are unreadable or corrupted (source of broken graphs).
You can run validate.php as
root by executing
./validate.php within your install directory.
The output will provide you either a clean bill of health or a list of things you need to fix:
OK - This is a good thing, you can skip over these :)
WARN - You probably want to check this out.
FAIL - This is going to need your attention!
Validate from the WebUI
You can validate your LibreNMS install from the WebUI, using the nav bar and clicking on the little Gear Icon -> Validate Config. Then You should see the results of validate. Below is just example of the results.