Hello,
After upgrade from 1.7.4 to 1.8.1, basically with the end of mail conf
snippet, the sessions started to grow, as example:
1.7.4:
Active sessions: ~161
Active sessions rate: ~425
1.8.1:
Active sessions: ~6700
Active sessions rate: ~350
Looking into the linux (3.16.7) server, there are a high number of
CLOSE_WAIT connections from the bind address of the listen service to
the backend nodes.
System logs reported "TCP: too many orphaned sockets", but after
increase net.ipv4.tcp_max_orphans value, the message stops but nothing
changes.
Haproxy logs reported for that listen the indicator "sD", but only with
1.8.
Any ideas to dig into the issue?
Thanks,
defaults
mode tcp
retries 3
option redispatch
maxconn 100000
fullconn 100000
timeout connect 5s
timeout server 50s
timeout client 50s
listen proxy-tcp
bind 192.168.1.1:80
balance roundrobin
server node1 192.168.1.10:80
server node2 192.168.1.11:80
server node3 192.168.1.12:80
