Memory Linux check result not accurate

[carlsnyman]

The memory is not accurate and does not correlate with actual system memory. See below.

System values calulated using free command.

host 1: Oracle Linux Server release 7.9

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NCPA memory: 76.5 %
System memory: 32.73 %

host 2: Oracle Linux Server release 6.10

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NCPA memory: 20.7 %
System memory: 98.17 %

[ssax]

What version of NCPA is the remote system running?

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/usr/local/nagios/libexec/check_ncpa.py -H X.X.X.X -t 'yourtoken' -M 'system/agent_version'

I'm labbing this up to investigate further.

EDIT: I labbed it up with OL7 and they are matching on mine:

NCPA: 11.70%
System: 3693/310 = 11.91%

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[root@xid ~]# /usr/local/nagios/libexec/check_ncpa.py -H X.X.X.X -t 'yyyyyyy' -P 5693 -M memory/virtual -u Gi -w 50 -c 80
OK: Memory usage was 11.70 % (Available: 3.19 GiB, Total: 3.61 GiB, Free: 2.90 GiB, Used: 0.30 GiB) | 'available'=3.19GiB;;; 'total'=3.61GiB;;; 'free'=2.90GiB;;; 'used'=0.30GiB;;;

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[root@oracle7 ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:           3693         310        2973           8         408        3262
Swap:          1639           0        1639