nginx基本使用系列(二)_ubuntu14.04下源码安装配置自启动脚本

上文中利用了

sudo ./configure --prefix=/usr/local/nginx

来编译安装nginx源码包,这样安装所有的nginx源码会被安装在/usr/local/nginx文件下.每次启动都需要通过/user/local/nginx/sbin/nginx来启动,参考通过Ubuntu下通过apt-get安装,会配置自启动脚本,我们也在通过源码包安装的情况下,配置自己的自启动脚本.

配置nginx开机服务

默认这么安装好以后每次检查配置、重启之类的操作略麻烦,所以我们模仿 Ubuntu 14.04 官方源,给系统设置个 nginx 服务,方便我们检查配置、启动重启关闭 Nginx 以及开机自动启动 Nginx.

sudo vim /etc/init.d/nginx

插入如下内容:

#!/bin/sh
### BEGIN INIT INFO
# Provides:       nginx
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the nginx web server
# Description:       starts nginx using start-stop-daemon
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
##### nginx启动脚本
#####DAEMON=/usr/sbin/nginx
DAEMON=/usr/local/nginx/sbin/nginx
NAME=nginx
DESC=nginx
# Include nginx defaults if available
if [ -r /etc/default/nginx ]; then
        . /etc/default/nginx
fi
test -x $DAEMON || exit 0
. /lib/init/vars.sh
. /lib/lsb/init-functions
# Try to extract nginx pidfile
####修改配置文件目录
####PID=$(cat /etc/nginx/nginx.conf | grep -Ev '^\s*#' | awk 'BEGIN { RS="[;{}]" } { if ($1 == "pid") print $2 }' | head -n1)
PID=$(cat /usr/local/nginx/conf/nginx.conf | grep -Ev '^\s*#' | awk 'BEGIN { RS="[;{}]" } { if ($1 == "pid") print $2 }' | head -n1)

##### -z str1:当串的长度为0时为真(空串)
if [ -z "$PID" ]
then
        PID=/run/nginx.pid
fi
# Check if the ULIMIT is set in /etc/default/nginx

#### -n str1:当串的长度大于0时为真(串非空) 
if [ -n "$ULIMIT" ]; then
        # Set the ulimits
        ulimit $ULIMIT
fi

#
# Function that starts the daemon/service
#
do_start()
{
        # Return
        #   0 if daemon has been started
        #   1 if daemon was already running
        #   2 if daemon could not be started
        start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON --test > /dev/null \
                || return 1
        start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON -- \
                $DAEMON_OPTS 2>/dev/null \
                || return 2
}

test_nginx_config() {
        $DAEMON -t $DAEMON_OPTS >/dev/null 2>&1
}

#
# Function that stops the daemon/service
#
do_stop()
{
        # Return
        #   0 if daemon has been stopped
        #   1 if daemon was already stopped
        #   2 if daemon could not be stopped
        #   other if a failure occurred
        start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PID --name $NAME
        RETVAL="$?"
        sleep 1
        return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
        start-stop-daemon --stop --signal HUP --quiet --pidfile $PID --name $NAME
        return 0
}

#
# Rotate log files
#
do_rotate() {
        start-stop-daemon --stop --signal USR1 --quiet --pidfile $PID --name $NAME
        return 0
}

#
# Online upgrade nginx executable
#
# "Upgrading Executable on the Fly"
# http://nginx.org/en/docs/control.html
#
do_upgrade() {
        # Return
        #   0 if nginx has been successfully upgraded
        #   1 if nginx is not running
        #   2 if the pid files were not created on time
        #   3 if the old master could not be killed
        if start-stop-daemon --stop --signal USR2 --quiet --pidfile $PID --name $NAME; then
                # Wait for both old and new master to write their pid file
                while [ ! -s "${PID}.oldbin" ] || [ ! -s "${PID}" ]; do
                        cnt=`expr $cnt + 1`
                        if [ $cnt -gt 10 ]; then
                                return 2
                        fi
                        sleep 1
                done
                # Everything is ready, gracefully stop the old master
                if start-stop-daemon --stop --signal QUIT --quiet --pidfile "${PID}.oldbin" --name $NAME; then
                        return 0
                else
                        return 3
                fi
        else
                return 1
        fi
}

case "$1" in
        start)
                [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
                do_start
                case "$?" in
                        0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
                        2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
                esac
                ;;
        stop)
                [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
                do_stop
                case "$?" in
                        0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
                        2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
                esac
                ;;
        restart)
                log_daemon_msg "Restarting $DESC" "$NAME"
                # Check configuration before stopping nginx
                if ! test_nginx_config; then
                        log_end_msg 1 # Configuration error
                        exit 0
                fi
                do_stop
                case "$?" in
                        0|1)
                                do_start
                                case "$?" in
                                        0) log_end_msg 0 ;;
                                        1) log_end_msg 1 ;; # Old process is still running
                                        *) log_end_msg 1 ;; # Failed to start
                                esac
                                ;;
                        *)
                                # Failed to stop
                                log_end_msg 1
                                ;;
                esac
                ;;
        reload|force-reload)
                log_daemon_msg "Reloading $DESC configuration" "$NAME"
                # Check configuration before reload nginx
                #
                # This is not entirely correct since the on-disk nginx binary
                # may differ from the in-memory one, but that's not common.
                # We prefer to check the configuration and return an error
                # to the administrator.
                if ! test_nginx_config; then
                        log_end_msg 1 # Configuration error
                        exit 0
                fi

                do_reload
                log_end_msg $?
                ;;
        configtest|testconfig)
                log_daemon_msg "Testing $DESC configuration"
                test_nginx_config
                log_end_msg $?
                ;;
        status)
                status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
                ;;
        upgrade)
                log_daemon_msg "Upgrading binary" "$NAME"
                do_upgrade
                log_end_msg 0
                ;;
        rotate)
                log_daemon_msg "Re-opening $DESC log files" "$NAME"
                do_rotate
                log_end_msg $?
                ;;
        *)
                echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest|rotate|upgrade}" >&2
                exit 3
                ;;
esac
:
  • 注意设置好nginx的启动路径 DAEMON=/usr/sbin/nginx;
  • 注意设置nginx.conf配置文件路径,并且nginx.conf配置文件里面的pid路径,以及其他日志文件的路径;
  • 和apt-get官方启动脚本相比,####为修改以及备注理解部分

设置文件权限并增加到系统服务

sudo chmod +x ./nginx
sudo update-rc.d nginx defaults

nginx启动 关闭 重启

sudo /etc/init.d/nginx stop
sudo /etc/init.d/nginx start
sudo /etc/init.d/nginx restart

启动脚本涉及的命令参考:
ulimit -n 修改:http://blog.csdn.net/yangzhenzhen/article/details/8905846
linux shell之if_用if做判断:http://blog.csdn.net/crazyhacking/article/details/10182563
用start-stop-daemon启动Nginx:http://blog.csdn.net/csfreebird/article/details/8181337

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