linux中service配置之nginx

 

#!/bin/sh
# section 1
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   2345 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:     /var/run/nginx/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
#section 2
start() {
    [ -x $nginx ] || exit 5
    [ -f $NGINX_CONF_FILE ] || exit 6
    gprintf "Starting %s: " "$prog"
    daemon $nginx -c $NGINX_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    gprintf "Stopping %s: " "$prog"
    killproc $prog
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    configtest_q || configtest || return 6
    stop
    start
}

reload() {
    configtest_q || configtest || return 6
    gprintf "Reloading %s: " "$prog"
    killproc $nginx -HUP
    echo
}
#section 3
configtest() {
  $nginx -t -c $NGINX_CONF_FILE
}

configtest_q() {
    configtest >/dev/null 2>&1
}

rh_status() {
    status $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

# Upgrade the binary with no downtime.
upgrade() {
    local pidfile="/var/run/${prog}/${prog}.pid"
    local oldbin_pidfile="${pidfile}.oldbin"

    configtest_q || configtest || return 6
    gprintf "Starting new master %s: " "$prog"
    killproc $nginx -USR2
    retval=$?
    echo
    sleep 1
    if [[ -f ${oldbin_pidfile} && -f ${pidfile} ]];  then
        gprintf "Graceful shutdown of old %s: " "$prog"
        killproc -p ${oldbin_pidfile} -QUIT
        retval=$?
        echo
#section 4
 return 0
    else
        gprintf "Something bad happened, manual intervention required, maybe restart?\n"
        return 1
    fi
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest)
        $1
        ;;
    force-reload|upgrade)
        rh_status_q || exit 7
        upgrade
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    status|status_q)
        rh_$1
        ;;
    condrestart|try-restart)
        rh_status_q || exit 7
        restart
#section 5
            ;;
    *)
        gprintf "Usage: %s {start|stop|reload|configtest|status|force-reload|upgrade|restart}\n" "$0"
        exit 2
esac

 

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