collectd Exec 플러그인을 사용하여 HAproxy 모니터링하기 - CentOS

haproxy 통계를 수행할 스크립트를 작성한다.(/usr/local/bin/haproxy-stat.sh, chmod 755)

 #!/bin/sh

# Script basat de https://collectd.org/wiki/index.php/Plugin:haproxy-stat.sh

# Parametres de haproxy consultables a http://cbonte.github.com/haproxy-dconv/configuration-1.4.html#9.2

#

#

# Us:

# LoadPlugin exec

# <Plugin exec>

#    Exec "haproxy:haproxy" "/etc/collectd.d/haproxy-stat.sh" "-s" "/var/run/haproxy-stat"

# </Plugin>

#

# Novembre de 2012

# Toni Comerma

sock='/var/lib/haproxy/stats'

host="$(hostname -f)"

pause=10

while getopts "h:p:s:" c; do

    case $c in

         s)      sock=$OPTARG;;

         *)      echo "Usage: $0 [-s <sockfile>]";;

    esac

done

host="${COLLECTD_HOSTNAME:-$host}"

pause="${COLLECTD_INTERVAL:-$pause}"

INTERVAL=$pause

while [ $? -eq 0 ]; do

        time="$(date +%s)"

        echo 'show stat' | socat - UNIX-CLIENT:$sock \

        |while IFS=',' read pxname svname qcur qmax scur smax slim stot bin bout dreq dresp ereq econ eresp wretr wredis status weight act bck chkfail chdown lastchg downtime qlimit pid iid sid throttle lbtot tracked type rat

e rate_lim rate_max check_status check_code check_duration hrsp_1xx hrsp_2xx hrsp_3xx hrsp_4xx hrsp_5xx hrsp_other hanafail req_rate req_rate_max req_tot cli_abrt srv_abrt

        do

          if [ "$svname" != "svname" -a ! -z "$svname" ]

            then

              if [ "$svname" = 'FRONTEND' ]

              then

                echo "PUTVAL $host/haproxy-$pxname-$svname/gauge-req_rate interval=$INTERVAL $time:${req_rate:-0}"

                echo "PUTVAL $host/haproxy-$pxname-$svname/counter-ereq interval=$INTERVAL $time:${ereq:-0}"

              fi

              echo "PUTVAL $host/haproxy-$pxname-$svname/bytes-bin interval=$INTERVAL $time:${bin:-0}"

              echo "PUTVAL $host/haproxy-$pxname-$svname/bytes-bout interval=$INTERVAL $time:${bout:-0}"

              echo "PUTVAL $host/haproxy-$pxname-$svname/gauge-scur interval=$INTERVAL $time:${scur:-0}"

              echo "PUTVAL $host/haproxy-$pxname-$svname/gauge-rate interval=$INTERVAL $time:${rate:-0}"

              if [ "$svname" != 'FRONTEND' ]

              then

                echo "PUTVAL $host/haproxy-$pxname-$svname/counter-eresp interval=$INTERVAL $time:${eresp:-0}"

                echo "PUTVAL $host/haproxy-$pxname-$svname/counter-econ interval=$INTERVAL $time:${econ:-0}"

              fi

          fi

        done

만약, socat 패키지가 설치되어있지 않다면 설치한다.

#yum install socat

설정 파일에서 exec 모듈을 활성화한다.

#vi /etc/collectd.conf

LoadPlugin exec

<Plugin exec>

         Exec "haproxy:haproxy" "/usr/local/bin/haproxy-stat.sh" "-s" "/var/lib/haproxy/stats"

#       Exec "user:group" "/path/to/exec"

#       NotificationExec "user:group" "/path/to/exec"

</Plugin>

/var/lib/haproxy/stats 파일의 소유권을 haproxy로 변경한다.

#chown haproxy.haproxy /var/lib/haproxy/stats

collectd 를 재실행한다.

---

2013-12-30

 #!/bin/sh

 

 sock='/var/lib/haproxy/stats'

 host="${COLLECTD_HOSTNAME}"

 pause="${COLLECTD_INTERVAL:-10}"

 

 while getopts "h:p:s:" c; do

  case $c in

  h) host=$OPTARG;;

  p) pause=$OPTARG;;

  s) sock=$OPTARG;;

  *) echo "Usage: $0 [-h <hostname>] [-p <seconds>] [-s <sockfile>]";;

  esac

 done

 

 while [ $? -eq 0 ]; do

  time="$(date +%s)"

  echo 'show stat' | socat - UNIX-CLIENT:$sock \

  |while IFS=',' read pxname svname qcur qmax scur smax slim stot bin bout dreq dresp ereq econ eresp wretr wredis status weight act bck chkfail chdown lastchg downtime qlimit pid iid sid throttle lbtot tracked type rate rate_lim rate_max check_status check_code check_duration hrsp_1xx hrsp_2xx hrsp_3xx hrsp_4xx hrsp_5xx hrsp_other hanafail req_rate req_rate_max req_tot cli_abrt srv_abrt; do

  [ "$svname" != 'BACKEND' ] && continue

  echo "PUTVAL $host/haproxy/haproxy_backend-$pxname $time:${stot:-0}:${econ:-0}:${eresp:-0}"

  done

  sleep $pause

 done

collectd.conf 의 내용을 아래와 같이 수정

Exec "haproxy:haproxy" "/etc/collectd/haproxy-stat.sh" "-s" "/var/lib/haproxy/stats" "-h" "logy.kr" "-p" "10"

마지막으로 /usr/share/collectd/types.db 에 아래의 내용을 추가함

haproxy_backend         stot:COUNTER:0:U, econ:COUNTER:0:U, eresp:COUNTER:0:U

만약, 서버/클라이언트 형태로 collectd 를 사용하고 있다면 서버의 types.db 에도 해당 항목을 추가한다.