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docker_memory: handle cgroup v2

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Andreas Perhab 2023-03-30 14:46:23 +02:00
parent 3148cec2cb
commit 0e24b3c935
1 changed files with 12 additions and 0 deletions
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12
plugins/docker/docker_memory
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@ -67,6 +67,18 @@ for my $i (1 .. $#containers)
$name =~ s/,.*//g;
if (open(my $file, '<', "/sys/fs/cgroup/memory/docker/$id/memory.usage_in_bytes"))
{
# https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
my $memory_bytes = <$file>;
$memory_bytes =~ s/\s+$//;
push @result, {'name'=>$name, 'memory_bytes'=>$memory_bytes};
$total = $total + $memory_bytes;
}
elsif(open($file, '<', "/sys/fs/cgroup/system.slice/docker-$id.scope/memory.current"))
{
# https://www.kernel.org/doc/Documentation/cgroup-v2.txt
# hexdump -C < /sys/fs/cgroup/system.slice/docker-f226ca5e7e61b884a87ae25912b6da1a62cc7c518add8940dfd81c6e6015a738.scope/memory.current
# 00000000 39 35 30 32 37 32 30 0a |9502720.|
# 00000008
my $memory_bytes = <$file>;
$memory_bytes =~ s/\s+$//;
push @result, {'name'=>$name, 'memory_bytes'=>$memory_bytes};