diff options
Diffstat (limited to 'conf.d/health.d/tcp_orphans.conf')
| -rw-r--r-- | conf.d/health.d/tcp_orphans.conf | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/conf.d/health.d/tcp_orphans.conf b/conf.d/health.d/tcp_orphans.conf new file mode 100644 index 000000000..280d6590f --- /dev/null +++ b/conf.d/health.d/tcp_orphans.conf @@ -0,0 +1,21 @@ + +# +# check +# http://blog.tsunanet.net/2011/03/out-of-socket-memory.html +# +# The kernel may penalize orphans by 2x or even 4x +# so we alarm warning at 25% and critical at 50% +# + + alarm: tcp_orphans + on: ipv4.sockstat_tcp_sockets + os: linux + hosts: * + calc: ${orphan} * 100 / ${tcp_max_orphans} + units: % + every: 10s + warn: $this > (($status >= $WARNING ) ? ( 20 ) : ( 25 )) + crit: $this > (($status >= $CRITICAL) ? ( 25 ) : ( 50 )) + delay: up 0 down 5m multiplier 1.5 max 1h + info: the percentage of orphan IPv4 TCP sockets over the max allowed (this may lead to too-many-orphans errors) + to: sysadmin |