get trouble with start exporter

[mcl116cn]

i've built up a 3-node-cluster with coroysnc and pacemaker
but when i startup the ha_cluster_exporter the log shows error:

could not initialize 'drbd' collector : '/sbin/drbdsetup' does not exist

which means must i have to built a drbd cluster?

[stefanotorresi]

The exporter needs to be able to initialize at least one collector. As long as one of the others works, you can safely ignore that message. The process will only fail hard if it can't initialize any collector.