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From Jean Baptiste Favre <webmas...@jbfavre.org>
Subject Weird "warning too many connections, throttling" message
Date Tue, 19 Nov 2013 10:36:18 GMT
Hello,
I'm trying to set up a cluster with 2 TrafficServer nodes.
I use following configuration:
LOCAL proxy.local.cluster.type INT 1
CONFIG proxy.config.cluster.cluster_port INT 8086
CONFIG proxy.config.cluster.rsport INT 8088
CONFIG proxy.config.cluster.mcport INT 8089
CONFIG proxy.config.cluster.mc_group_addr STRING 224.0.1.37
CONFIG proxy.config.cluster.mc_ttl INT 1
CONFIG proxy.config.cluster.log_bogus_mc_msgs INT 1
CONFIG proxy.config.cluster.ethernet_interface STRING eth0

Everything is fine so far, except that, from time to time, each node
opens tons of connections with... itself. Then I can see in logs:

[Nov 19 10:37:58.808] Server {0x2b2f0f9a8700} WARNING: too many
connections, throttling
[Nov 19 10:52:07.727] Server {0x2b2f0f9a8700} WARNING: too many
connections, throttling
[Nov 19 10:52:08.675] Manager {0x7f37b2ddb720} NOTE:
[Alarms::signalAlarm] Skipping Alarm: 'too many connections, throttling'
[Nov 19 11:02:33.561] Server {0x2b2f0f9a8700} WARNING: too many
connections, throttling
[Nov 19 11:12:51.726] Server {0x2b2f0f9a8700} WARNING: too many
connections, throttling
[Nov 19 11:12:54.213] Manager {0x7f37b2ddb720} NOTE:
[Alarms::signalAlarm] Skipping Alarm: 'too many connections, throttling'

Problem is, on of the 2 nodes opens connection on its own loopback, the
other on its own public adress.
Second problem is that traffic server's instances are not used for now.

I'm sure they share exactly the same configuration since it's
distributed via Chef.

Could HAproxy load-balancer health checks generate so much connections ?

Any advice welcome,
Regards,
Jean-Baptiste Favre

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