From 1e6c93250172946eeb38e94a92a1fd12c9d3011e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Nov 2018 13:22:44 +0100 Subject: Merging upstream version 1.11.0+dfsg. Signed-off-by: Daniel Baumann --- health/health.d/tcp_mem.conf | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 health/health.d/tcp_mem.conf (limited to 'health/health.d/tcp_mem.conf') diff --git a/health/health.d/tcp_mem.conf b/health/health.d/tcp_mem.conf new file mode 100644 index 000000000..6927d5765 --- /dev/null +++ b/health/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 -- cgit v1.2.3