Ubuntu 16.04安裝Nginx

在ubuntu中安裝nginx有兩種方式，分別是apt安裝和源碼安裝，若是想要安裝最新版就須要下載源碼編譯安裝。

apt安裝

sudo apt-get install nginx
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/usr/sbin/nginx ： 主程序位置
/etc/nginx：nginx文件配置
/usr/share/nginx：存放靜態文件
/var/log/nginx：存放日誌
有關nginx映射配置文件默認放在/etc/nginx/sites-available/中的default文件，但爲了方便管理，通常會在/etc/nginx/conf.d/中建立一個新的配置文件。
使用apt安裝能夠不用配置使用以下命令：

sudo service nginx {start|stop|restart|reload|force-reload|status|configtest|rotate|upgrade}的命令啓動。
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源碼安裝

安裝nginx依賴庫

安裝gcc g++的依賴庫

apt-get install build-essential
apt-get install libtool
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安裝 pcre依賴庫

sudo apt-get update
sudo apt-get install libpcre3 libpcre3-dev
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安裝 zlib依賴庫

apt-get install zlib1g-dev
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安裝 ssl依賴庫

apt-get install openssl
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安裝nginx

#下載最新版本：
wget http://nginx.org/download/nginx-1.11.3.tar.gz
#解壓：
tar -zxvf nginx-1.11.3.tar.gz
#進入解壓目錄：
cd nginx-1.11.3
#配置：
./configure --prefix=/usr/local/nginx 
#編輯nginx：
make
注意：這裏可能會報錯，提示「pcre.h No such file or directory」,具體詳見：http://stackoverflow.com/questions/22555561/error-building-fatal-error-pcre-h-no-such-file-or-directory
須要安裝 libpcre3-dev,命令爲：sudo apt-get install libpcre3-dev
#安裝nginx：
sudo make install
#啓動nginx：
sudo /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
注意：-c 指定配置文件的路徑，不加的話，nginx會自動加載默認路徑的配置文件，能夠經過 -h查看幫助命令。
#查看nginx進程：
ps -ef|grep nginx
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源碼安裝時，啓用nginx須要使用/usr/local/nginx/sbin/nginx 若是不輸入路徑須要配置軟鏈接即

sudo ln -s /usr/local/nginx/sbin/nginx /usr/bin/nginx
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設置開機啓動

設置以前先來了解下update-rc.d命令， 該命令是用來自動的升級System V 類型初始化腳本，就是你想要哪些東西在系統引導初始化時運行，那些東西是但願在關機或重啓時中止。
咱們先要在/etc/init.d目錄下建立一個nginx的命令腳本， 命令 sudo vi nginx 輸入如下內容

#!/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
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

STOP_SCHEDULE="${STOP_SCHEDULE:-QUIT/5/TERM/5/KILL/5}"

test -x $DAEMON || exit 0

. /lib/init/vars.sh
. /lib/lsb/init-functions

# Try to extract nginx pidfile
PID=$(cat /usr/local/nginx/conf/nginx.conf | grep -Ev '^\s*#' | awk 'BEGIN { RS="[;{}]" } { if ($1 == "pid") print $2 }' | head -n1)
if [ -z "$PID" ]; then
    PID=/run/nginx.pid
fi

if [ -n "$ULIMIT" ]; then
    # Set ulimit if it is set in /etc/default/nginx
    ulimit $ULIMIT
fi

start_nginx() {
    # Start the daemon/service
    #
    # Returns:
    # 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_config() {
    # Test the nginx configuration
    $DAEMON -t $DAEMON_OPTS >/dev/null 2>&1
}

stop_nginx() {
    # Stops the daemon/service
    #
    # 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=$STOP_SCHEDULE --pidfile $PID --name $NAME
    RETVAL="$?"
    sleep 1
    return "$RETVAL"
}

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

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

upgrade_nginx() {
    # Online upgrade nginx executable
    # http://nginx.org/en/docs/control.html
    #
    # 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)
        log_daemon_msg "Starting $DESC" "$NAME"
        start_nginx
        case "$?" in
            0|1) log_end_msg 0 ;;
            2)   log_end_msg 1 ;;
        esac
        ;;
    stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        stop_nginx
        case "$?" in
            0|1) log_end_msg 0 ;;
            2)   log_end_msg 1 ;;
        esac
        ;;
    restart)
        log_daemon_msg "Restarting $DESC" "$NAME"

        # Check configuration before stopping nginx
        if ! test_config; then
            log_end_msg 1 # Configuration error
            exit $?
        fi

        stop_nginx
        case "$?" in
            0|1)
                start_nginx
                case "$?" 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 stopping 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_config; then
            log_end_msg 1 # Configuration error
            exit $?
        fi

        reload_nginx
        log_end_msg $?
        ;;
    configtest|testconfig)
        log_daemon_msg "Testing $DESC configuration"
        test_config
        log_end_msg $?
        ;;
    status)
        status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
        ;;
    upgrade)
        log_daemon_msg "Upgrading binary" "$NAME"
        upgrade_nginx
        log_end_msg $?
        ;;
    rotate)
        log_daemon_msg "Re-opening $DESC log files" "$NAME"
        rotate_logs
        log_end_msg $?
        ;;
    *)
        echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest|rotate|upgrade}" >&2
        exit 3
        ;;
esac
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而後設置服務有執行權限並註冊服務

#設置服務腳本有執行權限
sudo chmod +x /etc/init.d/nginx
#註冊服務
cd /etc/init.d/
sudo update-rc.d nginx defaults
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用sudo ps -ef | grep nginx查看nginx進程狀況。
若是要取消開機啓動能夠這樣 update-rc.d -f nginx remove
如今安裝基本完成，即可以使用以下nginx命令

sudo service nginx {start|stop|restart|reload|forcereload|status|configtest|rotate|upgrade}
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參考：
www.cnblogs.com/EasonJim/p/…
www.cnblogs.com/piscesLoveC…
www.cnblogs.com/wkun/p/3798…

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