Consider instrumenting the collectors and record collection errors with dedicated metrics.

[stefanotorresi]

We need to ensure that saptune is available in the specified path.

Feel free to copy-paste from here:
https://github.com/ClusterLabs/ha_cluster_exporter/blob/3c305da4b9af7c24a8fb98389f9db5360733752c/collector/default_collector.go#L77

[MalloZup]

saptune_exporter/default_collector.go

Line 63 in 5482d0c

func checkExecutables(paths ...string) error {

this is already implemented in mostly all places unless i'm missing something?

[stefanotorresi]

Right! I totally missed that! I only checked in the collector constructors, but I see that the check happens in the actual collection cycles.
Maybe we should add the instrumented collector, then, so that we expose collection failures as well, instead of just logging the error?

[MalloZup]

make sense to add it. there are other things I didn't ported like error handling with context and maybe other details for a skeleton