Migrate hd_monitor.py to ROS2 about diagnostics HOT 2 CLOSED

Hi @limaanto

Thanks for your interest in working on this.

1. I was not involved with that. But I think the main point was, that it was unmanageably big. So not against the porting per se. I think porting the hd_monitor is a good idea.
2. From porting the NTP monitor I learned, that finding the right dependency is probably the hardest task in this. I don't have an overview on HDD tools. But it would be ideal if you find something that is well-supported also under RHEL. Looking for existing rosdep keys is also a good idea.
   I agree that the temperature could be skipped if not readily available. If someone needs it, please open an issue.
3. I guess the partition of the home folder is the most important one, because it could cause boot issues. So I would suggest having a list of disks to monitor and by default populate it just with the one of the home folder
4. I agree, one hostname is enough.

from diagnostics.

Hi @ct2034
Thank you for your thorough answer :)
I agree with your points. I will provide a merge request in the following days/weeks.

from diagnostics.