HAProxy community

Problem with logging

#1

Greetings,

My HAProxy 1.8.19 on Debian-9 is logging starts and stops but not traffic. Using the logger tool I can log anything I want to the proper files, so I can’t figure out what’s wrong.

Here is my logging config for rsyslog, saved in /etc/rsyslog.d/haproxy.conf.

Thanks for any clues!

$ModLoad imudp
$UDPServerAddress 127.0.0.1
$UDPServerRun 514
$FileOwner dialog
$FileGroup dialog
$FileCreateMode 0644

local0.* -/home/dialog/HAPROXY/logs/haproxy-traffic.log
local0.notice -/home/dialog/HAPROXY/logs/haproxy-admin.log
local0.info -/home/dialog/HAPROXY/logs/haproxy-info.log

…and here is the HAProxy config:

global
daemon
maxconn 256
log 127.0.0.1:514 local0

defaults
log global
option tcplog
mode tcp
timeout connect 5000ms
timeout client 50000ms
timeout server 50000ms

frontend fr_server1
log 127.0.0.1:514 local0
bind 0.0.0.0:8000
default_backend bk_server1

backend bk_server1
log 127.0.0.1:514 local0
server srv1 10.1.1.184:2775 maxconn 2048

#2

From what I know HAProxy logs connections / requests only after they end, therefore you should see a log line only after the connection was closed.

However you could try to use log global also in the frontend / backend, (although it shouldn’t make a difference). Also check Rsyslog own logs as perhaps it doesn’t understand the syslog protocol version HAProxy is sending (there are two versions RFC-3164 and RFC-5424).


Looking through some of my old HAProxy configuration files, this is how I configured them at that time (it is using Rsyslog):

log /dev/log len 65535 format rfc3164 daemon info err
# do not set log-send-hostname and log-tag

And for Rsyslog:

template(name="haproxy_log_file" type="string"
    string="/var/logs/haproxy/%timereported:1:10:date-rfc3339%.log")

template(name="haproxy_log_file_err" type="string"
    string="/var/logs/haproxy/%timereported:1:10:date-rfc3339%.err.log")

template(name="haproxy_log_line" type="string"
    string="<< %timereported:::date-rfc3339% %syslogseverity-text% >> %msg%\n")


ruleset(name="haproxy_rules") {

    action(
        type="omfile"
        dynaFile="haproxy_log_file"
        template="haproxy_log_line"
        fileOwner="syslog" fileGroup="haproxy" fileCreateMode="0640"
        dirOwner="syslog" dirGroup="haproxy" dirCreateMode="0750" createDirs="off"
        sync="off" ioBufferSize="128k" flushOnTXEnd="on" dynaFileCacheSize="2")

    if prifilt("*.err") then
        action(
            type="omfile"
            dynaFile="haproxy_log_file_err"
            template="haproxy_log_line"
            fileOwner="syslog" fileGroup="haproxy" fileCreateMode="0640"
            dirOwner="syslog" dirGroup="haproxy" dirCreateMode="0750" createDirs="off"
            sync="on" ioBufferSize="128k" flushOnTXEnd="on" dynaFileCacheSize="2")

    stop
}


input(type="imuxsock"
    socket="/var/lib/haproxy/dev/log"
    createPath="on" unlink="on"
    ignoreTimestamp="off" useSysTimeStamp="on"
)


if ($programname == "haproxy") then call haproxy_rules
& stop