In Orion NPM we can check the volumes of a node and create alerts based on % or disk free space, a node with 0 byte free normally is not a good thing.
In Window systems the normal SNMP check works perfectly, and all the data are correct.
In Linux systems these standard checks are not correct...and I had some problems with Linux servers with 0% free space... and in Orion the free space was 4%... and obviously my linux team was not "happy"... server under monitoring, no alerts and all services blocked..
The problem is that Linux reserves a percentage of free space for the superuser in order to be sure that you can work on the system in case of problems, normally this reserved free space is 5%.. so in the server below... "3.8Gb : 2.0Gb = 100 : X" mathematically the used space is ~52% BUT the real used disk is ~56%.
So for Linux there are other values and other OID.
Path where the disk is mounted: .22.214.171.124.4.1.2021.9.1.2.1
Path of the device for the partition: .126.96.36.199.4.1.2021.9.1.3.1
Total size of the disk/partion (kBytes): .188.8.131.52.4.1.2021.9.1.6.1
Available space on the disk: .184.108.40.206.4.1.2021.9.1.7.1
Used space on the disk: .220.127.116.11.4.1.2021.9.1.8.1
Percentage of space used on disk: .18.104.22.168.4.1.2021.9.1.9.1
Percentage of inodes used on disk: .22.214.171.124.4.1.2021.9.1.10.1
The request is simple, for Linux like for Cisco systems it would be nice to have the possibility to choose the type of SNMP checks, the "126.96.36.199.188.8.131.52.3.1" family or the "184.108.40.206.4.1.2021.9.1.9" family...
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