cronolog를 이용한 nginx log rotate

cronolog를 이용한 nginx log rotate

• cronolog 다운로드

wget https://vps.googlecode.com/files/cronolog-1.6.2.tar.gz

• cronolog 설치

./configure --prefix=/usr/local/cronolog
make
make install

• cronolog를 이용해서 nginx 의 access log, error log를 시간 별로 rotate 하기 위해 nginx 시작 스크립트를 다음과 같이 수정

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15
# description:  Nginx is an HTTP(S) server, HTTP(S) reverse
#               proxy and IMAP/POP3 proxy server
# processname: nginx
# config:      /usr/local/nginx/conf/nginx.conf
# config:      /etc/sysconfig/nginx
# pidfile:     /usr/local/nginx/logs/nginx.pid
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
nginx="/usr/local/nginx/sbin/nginx"
prog=$(basename $nginx)
NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf"
[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx
lockfile=/var/lock/subsys/nginx
cronolog="/usr/local/cronolog/sbin/cronolog"
logdir="/usr/local/nginx/logs"
make_dirs() {
   # make required directories
   user=`$nginx -V 2>&1 | grep "configure arguments:" | sed 's/[^*]*--user=([^ ]*).*/1/g' -`
   if [ -z "`grep $user /etc/passwd`" ]; then
       useradd -M -s /bin/nologin $user
   fi
   options=`$nginx -V 2>&1 | grep 'configure arguments:'`
   for opt in $options; do
       if [ `echo $opt | grep '.*-temp-path'` ]; then
           value=`echo $opt | cut -d "=" -f 2`
           if [ ! -d "$value" ]; then
               # echo "creating" $value
               mkdir -p $value && chown -R $user $value
           fi
       fi
   done
}
start() {
    [ -x $nginx ] || exit 5
    [ -f $NGINX_CONF_FILE ] || exit 6
    make_dirs
    echo -n $"Starting $prog: "
    cronolog_start || return 7
    daemon $nginx -c $NGINX_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}
stop() {
    echo -n $"Stopping $prog: "
    killproc $prog -QUIT
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}
restart() {
    configtest || return $?
    stop
    sleep 1
    start
}
reload() {
    configtest || return $?
    echo -n $"Reloading $prog: "
    killproc $nginx -HUP
    RETVAL=$?
    echo
}
force_reload() {
    restart
}
configtest() {
  $nginx -t -c $NGINX_CONF_FILE
}
rh_status() {
    status $prog
}
cronolog_start() {
    if ! [ -p $logdir/access.log ]; then
       rm -f $logdir/access.log
       rm -f $logdir/error.log
       mkfifo $logdir/access.log
       mkfifo $logdir/error.log
    fi
    /bin/sh -c "/bin/cat $logdir/access.log | $cronolog $logdir/%Y%m%d/access_%H.log &"
    /bin/sh -c "/bin/cat $logdir/error.log  | $cronolog $logdir/%Y%m%d/error_%H.log &"
}
rh_status_q() {
    rh_status >/dev/null 2>&1
}
case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
            ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
        exit 2
esac

• 수정(추가)된 부분

cronolog="/usr/local/cronolog/sbin/cronolog"
logdir="/usr/local/nginx/logs"

start function 내에 다음 내용 추가

cronolog_start || return 7

cronolog_start 함수 추가

cronolog_start() {
    if ! [ -p $logdir/access.log ]; then
       rm -f $logdir/access.log
       rm -f $logdir/error.log
       mkfifo $logdir/access.log
       mkfifo $logdir/error.log
    fi
    /bin/sh -c "/bin/cat $logdir/access.log | $cronolog $logdir/%Y%m%d/access_%H.log &;"
    /bin/sh -c "/bin/cat $logdir/error.log  | $cronolog $logdir/%Y%m%d/error_%H.log &;"
}