diff options
author | Costa Tsaousis (ktsaou) <costa@tsaousis.gr> | 2017-11-08 00:06:20 +0200 |
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committer | Costa Tsaousis (ktsaou) <costa@tsaousis.gr> | 2017-11-08 00:06:20 +0200 |
commit | b3fee04bf0a12bf3dcf1b7aed4e4ea9b3665f0cf (patch) | |
tree | 9c3ef76375c2fa5a3d241135c8ce94ffbad9e09d /conf.d/health.d | |
parent | 0f9cc9f04fd8b49f17c8bf620d05c6b4c3633b60 (diff) |
provide tcp memory alarm
Diffstat (limited to 'conf.d/health.d')
-rw-r--r-- | conf.d/health.d/tcp_mem.conf | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/conf.d/health.d/tcp_mem.conf b/conf.d/health.d/tcp_mem.conf new file mode 100644 index 0000000000..6927d57652 --- /dev/null +++ b/conf.d/health.d/tcp_mem.conf @@ -0,0 +1,20 @@ +# +# check +# http://blog.tsunanet.net/2011/03/out-of-socket-memory.html +# +# We give a warning when TCP is under memory pressure +# and a critical when TCP is 90% of its upper memory limit +# + + alarm: tcp_memory + on: ipv4.sockstat_tcp_mem + os: linux + hosts: * + calc: ${mem} * 100 / ${tcp_mem_high} + units: % + every: 10s + warn: ${mem} > (($status >= $WARNING ) ? ( ${tcp_mem_pressure} * 0.8 ) : ( ${tcp_mem_pressure} )) + crit: ${mem} > (($status >= $CRITICAL ) ? ( ${tcp_mem_pressure} ) : ( ${tcp_mem_high} * 0.9 )) + delay: up 0 down 5m multiplier 1.5 max 1h + info: the amount of TCP memory as a percentage of its max memory limit + to: sysadmin |