【Haproxy】To setup logging in HAproxy

以下方法适用于RHEL，其他平台没有测试过。

Step 1: In Global Section of haproxy.cfg put the value log 127.0.0.1 local0 .Like given below

global log 127.0.0.1 local0

log语法：

log

[len ] [format ] [ []]

备注：

address：指明日志存储设备的IP。

facility:日志设备名称（local0~7）

[ []]：空缺表示存储所示级别日志。如果指明，表示存储改级别及以上的日志。

修改/etc/rsyslog.conf,添加local0.none到下面这行保存，并重启rsyslog服务：

*.info;local0.none;mail.none;authpriv.none;cron.none /var/log/messages

备注：

默认情况下，local0.info信息也会被记录到 /var/log/messages。经过这样修改后，只保存到/var/log/haproxy.log文件中。

Step 2: Create new haproxy configuration file in /etc/rsyslog.d . Here we are keeping the log in localhost or in other words we should say HAproxy server

Note:

local0.=info -/var/log/haproxy.log defines the http log will be saved in haproxy.log

local0.notice -/var/log/haproxy-status.log defines the Server status like start,stop,restart,down,up etc. will be saved in haproxy-status.log

UDPServerRun 514 means opening UDP port no. 514 to listen haproxy messages

vi /etc/rsyslog.d/haproxy.conf $ModLoad imudp $UDPServerRun 514 $template Haproxy,”%syslogseverity-text% %msg%\n”

$template Haproxy-status,”%syslogseverity-text% %timereported% %msg%\n”

#大流量情况下，提高消息级别

local0.=info -/var/log/haproxy.log;Haproxy

local0.notice -/var/log/haproxy-status.log;Haproxy-status

service rsyslog restart

Step 3: Now restart the HAproxy service

/etc/init.d/haproxy restart

After restarting the haproxy service two logs will be created itself i.e haproxy.log and haproxy-status.log

Step 4: Check your logrotae file for haproxy also so that logs keep on rotating and compress itself. If bydefault it is not present in /etc/logrotate.d directory then create a new file called haproxy and paste the given below code.

Here I am keeping the logs upto 120 days hence rotate 120 and daily is written in file.

cat /etc/logrotate.d/haproxy

/var/log/haproxy.log {

 missingok

 notifempty

 sharedscripts

 rotate 120

 daily

 compress

 postrotate

   service rsyslog restart >/dev/null2>&1||true

 endscript

}