Hi Lukas,
Your reply hints at the possibility that logging has not been configured properly for this set of servers.
Just to let you know, we have configured logging in precisely the same manner for HAProxy for another set of servers, and are able to see the logs for this server.
This is the configuration file for HA Proxy for the working set of servers:
[root@EDEMUMHAPRXY01 ~]# cat /etc/haproxy/haproxy.cfg
global
log /dev/log local0 info
log /dev/log local1 notice
defaults
log global
option dontlognull
timeout connect 10000
timeout client 45000
timeout server 24000
maxconn 50000
frontend firstpoint
mode tcp
bind 10.250.2.127:54321 transparent
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz
backend trackwizz
mode tcp
balance roundrobin
balance leastconn
option forwardfor
timeout server 30000
timeout connect 40000
server server1 10.250.0.41:54321 check weight 1 fall 2 inter 1s rise 2
server server2 10.250.0.36:54321 check weight 1 backup fall 2 inter 1s rise 2
frontend secondpoint
mode tcp
bind 10.250.2.127:8011 transparent
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz_2
backend trackwizz_2
balance leastconn
option forwardfor
timeout server 30000
timeout connect 40000
server server1 10.250.0.41:8011 check weight 1 fall 2 inter 1s rise 2
server server2 10.250.0.36:8011 check weight 1 fall 2 inter 1s rise 2
frontend thirdpoint
mode tcp
bind 10.250.2.127:54322
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz_3
backend trackwizz_3
balance leastconn
option forwardfor
timeout server 30000
timeout connect 40000
server server1 10.250.0.41:54322 check weight 1 fall 2 inter 1s rise 2
server server2 10.250.0.36:54322 check weight 1 fall 2 inter 1s rise 2
frontend fourthpoint
mode tcp
bind 10.250.2.127:54323
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz_4
backend trackwizz_4
balance leastconn
option forwardfor
timeout server 30000
timeout connect 40000
server server1 10.250.0.41:54323 check weight 1 fall 2 inter 1s rise 2
server server2 10.250.0.36:54323 check weight 1 fall 2 inter 1s rise 2
listen status 10.250.2.144:8888
mode http
stats enable
stats uri /hastatus
stats auth admin:12345678
[root@EDEMUMHAPRXY01 ~]#
and here is a snippet of logs for the server:
[root@EDEMUMHAPRXY01 ~]# less /var/log/haproxy/haproxy.log
Feb 23 08:21:53 EDEMUMHAPRXY01 haproxy[30747]: Connect from 10.172.0.239:64734 to 10.250.2.144:8888 (status/HTTP)
Feb 23 08:21:53 EDEMUMHAPRXY01 haproxy[30747]: Connect from 10.172.0.239:64735 to 10.250.2.144:8888 (status/HTTP)
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64721 [23/Feb/2019:08:21:35.118] firstpoint trackwizz/server1 1/0/40700 4300 sD 10/5/5/5/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64722 [23/Feb/2019:08:21:35.200] firstpoint trackwizz/server1 1/0/40618 4696 sD 9/4/4/4/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64724 [23/Feb/2019:08:21:35.202] firstpoint trackwizz/server1 1/0/40616 3379 sD 8/3/3/3/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64714 [23/Feb/2019:08:21:26.496] secondpoint trackwizz_2/server2 1/0/49322 5599 sD 7/3/3/1/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64725 [23/Feb/2019:08:21:35.202] firstpoint trackwizz/server1 1/0/40616 4172 sD 6/2/2/2/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64720 [23/Feb/2019:08:21:35.117] firstpoint trackwizz/server1 1/0/40701 100193 sD 5/1/1/1/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64716 [23/Feb/2019:08:21:28.790] secondpoint trackwizz_2/server2 1/0/47028 11597 sD 4/2/2/0/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64704 [23/Feb/2019:08:21:19.975] secondpoint trackwizz_2/server1 1/0/55844 99109 sD 3/1/1/1/0 0/0
Feb 23 08:22:15 EDEMUMHAPRXY01 haproxy[30747]: 10.172.0.239:64715 [23/Feb/2019:08:21:28.789] secondpoint trackwizz_2/server1 1/0/47029 93409 sD 2/0/0/0/0 0/0
Can you let me know why HA Proxy is able to log all connection requests to haproxy.log for this set of servers, but not able to log connection requests for the server whose file has been posted earlier?