Updated: 2017-04-13 18:52:38 CST +08

Nginx

Introduction

NGINX 是一個 HTTP 和反向代理伺服器(Reverse Proxy Server)，與知名的 Apache Server 一樣可作為 HTTP Server，但比 Apache 更為快速，節省更多系統資源。

Apache is like Microsoft Word, it has a million options but you only need six. Nginx does those six things, and it does five of them 50 times faster than Apache. — Chris Lea on nginx and WordPress

Install

Enviroment

OS: CentOS 7

Step

加入下載位置至 RPM 清單

rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

透過安裝工具 yum 安裝 nginx
```
yum install nginx
```

加入防火牆允許清單並重啟防火牆

firewall-cmd –permanent –zone=public –add-service=http
firewall-cmd –permanent –zone=public –add-service=httpd
firewall-cmd –permanent –zone=public –add-service=https
firewall-cmd –reload

啟動 NGINX服務
```
systemctl start nginx.service
```

Path

Config

/etc/nginx/

Log

/var/log/nginx

Daemon

新增以下 Shell Script 至 /ect/init.d/nginx (記得確認 nginx.conf 與 bin 檔的位置)

#!/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:      /etc/nginx/nginx.conf
# config:      /etc/sysconfig/nginx
# pidfile:     /var/run/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/sbin/nginx"
prog=$(basename $nginx)

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx

lockfile=/var/lock/subsys/nginx

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: "
    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
}

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

修改權限
```
chmod +x /etc/init.d/nginx
```
設定開機啟動
```
systemctl enable nginx
```

查看是否成功

# systemctl list-unit-files | grep nginx
nginx.service enabled