I'm using the SNMP Memory sensor to monitor the free memory on CentOS 7 servers. The results are totally wrong.
The command "free -h" displays this:
total used free shared buff/cache available Mem: 3.6G 1.4G 984M 36M 1.2G 1.9G Swap: 0B 0B 0B
PRTG Shows me 61% free. So the sensor might measure something wrong. What can i do to fix this?