ERROR: Unused Arguments when rendering RRD graph

In some cases you may see this error when inspecting graphs from the check_mssql_health command, but it’s currently unknown if this is a general issue or an error that only occurs in some cases.

What has helped in the past that you may want to try is to change the following file:

/opt/monitor/op5/pnp/templates.dist/check_mssql_health.php

Modify the line around #266 that looks like this:

$def[$defcnt] .= rrd::line1("bufcahitrat","#000000:");

To:

$def[$defcnt] .= rrd::line1("bufcahitrat","#000000");

Meaning, remove the trailing comma in the second argument.

If you see this error in other templates, it’s possible the error is caused by something similar, i.e. too many colons in the rrdtool generated output.