centos/rhel下实现nginx自启动脚本实例

通常在centos、rhel的OS下，我们大多是通过chkconfig来管理服务，比如开机自动启动服务之类。
这里给大家介绍一个很好用的nginx启动脚本。以及简单的使用，如下：

1. 执行如下命令：

vim /etc/init.d/nginxd

2.输入如下内容：

注意：该文件中的如下几个变量，都需要根据你实际的目录来改写。

nginx="/usr/local/nginx/sbin/nginx"  ##nginx的可执行文件路径
lockfile="/var/nginx/nginx.lock"   ##需要先创建/var/nginx目录
NGINX_CONF_FILE="/etc/nginx/nginx.conf" ##需要先创建该配置文件
#!/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
# 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 $nginx)
sysconfig="/etc/sysconfig/$prog"
lockfile="/var/nginx/nginx.lock"
pidfile="/var/nginx/${prog}.pid"
NGINX_CONF_FILE="/etc/nginx/nginx.conf"
[ -f $sysconfig ] && . $sysconfig
start() {
  [ -x $nginx ] || exit 5
  [ -f $NGINX_CONF_FILE ] || exit 6
  echo -n $"Starting $prog: "
  daemon $nginx -c $NGINX_CONF_FILE
  retval=$?
  echo
  [ $retval -eq 0 ] && touch $lockfile
  return $retval
}
stop() {
  echo -n $"Stopping $prog: "
  killproc -p $pidfile $prog
  retval=$?
  echo
  [ $retval -eq 0 ] && rm -f $lockfile
  return $retval
}
restart() {
  configtest_q || return 6
  stop
  start
}
reload() {
  configtest_q || return 6
  echo -n $"Reloading $prog: "
  killproc -p $pidfile $prog -HUP
  echo
}
configtest() {
  $nginx -t -c $NGINX_CONF_FILE
}
configtest_q() {
  $nginx -t -q -c $NGINX_CONF_FILE
}
rh_status() {
  status $prog
}
rh_status_q() {
  rh_status >/dev/null 2>&1
}
# Upgrade the binary with no downtime.
upgrade() {
  local oldbin_pidfile="${pidfile}.oldbin"
  configtest_q || return 6
  echo -n $"Upgrading $prog: "
  killproc -p $pidfile $prog -USR2
  retval=$?
  sleep 1
  if [[ -f ${oldbin_pidfile} && -f ${pidfile} ]]; then
    killproc -p $oldbin_pidfile $prog -QUIT
    success $"$prog online upgrade"
    echo
    return 0
  else
    failure $"$prog online upgrade"
    echo
    return 1
  fi
}
# Tell nginx to reopen logs
reopen_logs() {
  configtest_q || return 6
  echo -n $"Reopening $prog logs: "
  killproc -p $pidfile $prog -USR1
  retval=$?
  echo
  return $retval
}
case "$1" in
  start)
    rh_status_q && exit 0
    $1
    ;;
  stop)
    rh_status_q || exit 0
    $1
    ;;
  restart|configtest|reopen_logs)
    $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
    ;;
  *)
    echo $"Usage: $0 {start|stop|reload|configtest|status|force-reload|upgrade|restart|reopen_logs}"
    exit 2
esac

保存完毕之后，可以执行以下命令来启动nginx

chmod 777 /etc/init.d/nginxd
/etc/init.d/nginxd start

3. 配置开机启动

执行以下命令：

chkconfig nginxd on

可以以下命令查看是否成功

chkconfig --list | grep nginxd