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<header>Updated: 2017-04-13 18:52:38 CST +08</header>
<main>
<h1 id="nginx">Nginx</h1>
<h2 id="introduction">Introduction</h2>
<p>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。</p>
<blockquote>
<p>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</p>
</blockquote>
<h2 id="install">Install</h2>
<h3 id="enviroment">Enviroment</h3>
<p>OS: CentOS 7</p>
<h3 id="step">Step</h3>
<ol>
<li><p>加入下載位置至 RPM 清單</p>
<pre><code class="language-bash">rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
</code></pre></li>
<li><p>透過安裝工具 yum 安裝 nginx</p>
<pre><code class="language-bash">yum install nginx
</code></pre></li>
<li><p>加入防火牆允許清單並重啟防火牆</p>
<pre><code class="language-bash">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
</code></pre></li>
<li><p>啟動 NGINX服務</p>
<pre><code class="language-bash">systemctl start nginx.service
</code></pre></li>
</ol>
<h2 id="path">Path</h2>
<h3 id="config">Config</h3>
<pre><code class="language-bash">/etc/nginx/
</code></pre>
<h3 id="log">Log</h3>
<pre><code class="language-bash">/var/log/nginx
</code></pre>
<h2 id="daemon">Daemon</h2>
<ol>
<li><p>新增以下 Shell Script 至 /ect/init.d/nginx (記得確認 nginx.conf 與 bin 檔的位置)</p>
<pre><code class="language-bash">#!/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
</code></pre></li>
<li><p>修改權限</p>
<pre><code class="language-bash">chmod +x /etc/init.d/nginx
</code></pre></li>
<li><p>設定開機啟動</p>
<pre><code class="language-bash">systemctl enable nginx
</code></pre></li>
<li><p>查看是否成功</p>
<pre><code class="language-bash"># systemctl list-unit-files | grep nginx
nginx.service enabled
</code></pre></li>
</ol>
<h2 id="reference">Reference</h2>
<ul>
<li><a href="http://www.wikivs.com/wiki/apache_vs_nginx">http://www.wikivs.com/wiki/apache_vs_nginx)</a></li>
<li><a href="http://wiki.nginx.org/RedHatNginxInitScript">http://wiki.nginx.org/RedHatNginxInitScript</a></li>
<li><a href="http://www.rackspace.com/knowledge_center/article/centos-adding-an-nginx-init-script">http://www.rackspace.com/knowledge_center/article/centos-adding-an-nginx-init-script</a></li>
</ul>
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