This is interesting since the bug was fixed in 1.6-dev2.
https://github.com/haproxy/haproxy/commit/4cd477f3721f6a3fe7cf55ae729388bf7f279331
There are two curious conditions in the code:
if (s->admin & SRV_ADMF_MAINT)
return;
if (s->state == SRV_ST_STARTING || s->state == SRV_ST_RUNNING)
return;
Basically, if the server is in maintenance mode or is still starting, it
bails out. But that should preclude the UP logging you see. Can you
confirm the server in question isn't in maintenance mode? I might try to
reproduce this with gdb running to debug.
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https://bugs.launchpad.net/bugs/1582708
Title:
HAproxy 1.6.3 mail alerts on DOWN but not UP
Status in haproxy package in Ubuntu:
New
Bug description:
This has plagued since I upgraded to Xenial beta and HAProxy 1.6.x
(latest is .3). For some reason, HAProxy will mail alerts when the
state changes to DOWN, but not when the state changes back to UP. I
get mails for DOWN, so the mailer settings are correct, so this must
be something in HAProxy that's not quite right.
This is on a fully updated Xenial
Kernel: 4.4.0-22-generic
Description: Ubuntu 16.04 LTS
Release: 16.04
DOWN Alert:
May 16 15:52:44 caesar haproxy[957]: Server lc-db-cluster/qa-db is DOWN,
reason: Layer7 wrong status, code: 503, info: "Service Unavailable", check
duration: 9ms. 1 active and 0 backup servers left. 0 sessions active, 0
requeued, 0 remaining in queue.
DOWN Mail:
May 16 15:52:45 caesar postfix/smtp[1366]: 9D5CC1E0419:
to=<[email protected]>, relay=smtp.sendgrid.net[167.89.121.145]:587,
delay=0.94, delays=0.08/0.03/0.67/0.16, dsn=2.0.0, status=sent (250 Ok: queued
as ab6lg_ZkT6arW6MD-zLMlw)
UP Alert:
May 16 15:55:32 caesar haproxy[957]: Server lc-db-cluster/qa-db is UP,
reason: Layer7 check passed, code: 200, info: "OK", check duration: 9ms. 2
active and 0 backup servers online. 0 sessions requeued, 0 total in queue.
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