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handle last redhat net-snmp version for memory mode

This commit is contained in:
Colin Gagnaire 2019-08-22 10:10:27 +02:00
parent cb18a78a1b
commit d052083aed
1 changed files with 59 additions and 2 deletions
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61
centreon-plugins/snmp_standard/mode/memory.pm
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@ -156,6 +156,7 @@ sub new {
'units:s' => { name => 'units', default => '%' },
'free' => { name => 'free' },
'swap' => { name => 'check_swap' },
'redhat' => { name => 'redhat' },
});
return $self;
@ -208,8 +209,54 @@ sub memory_calc {
my ($used, $free, $prct_used, $prct_free) = (0, 0, 0, 0);
if ($total != 0) {
$used = $total - $available - $buffer - $cached;
$free = $total - $used;
#### procps-ng-3.3.10-23
## Mem:
## total = MemTotal in /proc/meminfo
## used = total - free - buffer - cache
## free = MemFree in /proc/meminfo
## shared = Shmem in /proc/meminfo
## buffers = Buffers in /proc/meminfo
## cache = Cached and Slab in /proc/meminfo
## available = MemAvailable in /proc/meminfo
## Swap:
## total = SwapTotal in /proc/meminfo
## used = total - free
## free = SwapFree in /proc/meminfo
#### net-snmp-5.7.2-38
## memTotalSwap = SwapTotal in /proc/meminfo
## memAvailSwap = SwapFree in /proc/meminfo
## memTotalReal = MemTotal in /proc/meminfo
## memAvailReal = MemFree in /proc/meminfo
## memTotalFree = memAvailSwap + memAvailReal
## memShared = MemShared in /proc/meminfo
## memBuffer = Buffers in /proc/meminfo
## memCached = Cached in /proc/meminfo (missing Slab)
#### procps-ng-3.3.10-26
## Mem:
## total = MemTotal in /proc/meminfo
## used = total - free - buffer - cache
## free = MemFree in /proc/meminfo
## shared = Shmem in /proc/meminfo
## buffers = Buffers in /proc/meminfo
## cache = Cached and SReclaimable in /proc/meminfo (https://gitlab.com/procps-ng/procps/commit/05d751c4f076a2f0118b914c5e51cfbb4762ad8e)
## available = MemAvailable in /proc/meminfo
## Swap:
## total = SwapTotal in /proc/meminfo
## used = total - free
## free = SwapFree in /proc/meminfo
#### net-snmp-5.7.2-43
## memTotalSwap = SwapTotal in /proc/meminfo
## memAvailSwap = SwapFree in /proc/meminfo
## memTotalReal = MemTotal in /proc/meminfo
## memAvailReal = MemFree + Buffers + Cached + SReclaimable in /proc/meminfo (https://bugzilla.redhat.com/attachment.cgi?id=1554747&action=diff)
## memTotalFree = memAvailSwap + memAvailReal
## memShared = MemShared in /proc/meminfo
## memBuffer = Buffers in /proc/meminfo
## memCached = Cached + SReclaimable in /proc/meminfo (https://bugzilla.redhat.com/attachment.cgi?id=1554747&action=diff)
$used = (defined($self->{option_results}->{redhat})) ? $total - $available : $total - $available - $buffer - $cached;
$free = (defined($self->{option_results}->{redhat})) ? $available : $total - $used;
$prct_used = $used * 100 / $total;
$prct_free = 100 - $prct_used;
}
@ -289,6 +336,16 @@ Can be: 'usage' (B), 'usage-free' (B), 'usage-prct' (%),
'swap' (B), 'swap-free' (B), 'swap-prct' (%),
'buffer' (B), 'cached' (B), 'shared' (B).
=item B<--redhat>
If using RedHat distribution with net-snmp >= 5.7.2-43.
This version: used = memTotalReal - memAvailReal // free = memAvailReal
Others versions: used = memTotalReal - memAvailReal - memBuffer - memCached // free = total - used
(grep for '##' in this mode for more informations)
=back
=cut