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CentOS6.x/7.x配置Nginx系统服务

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使用源代码编译方式安装Nginx的时候，肯定不如用用yum方式安装来得便捷，CentOS的系统服务需要自行配置。
自行配置Nginx为CentOS的系统服务时，出于进程管理考虑需要首先配置pid，出于安全考虑建议修改nginx的运行用户。

创建nginx.pid文件用于nginx主进程

touch /usr/local/nginx/logs/nginx.pid

修改conf/nginx.conf,设置pid和user

user     nobody;
pid       logs/nginx.pid;

CentOS6.x配置nginx系统服务
创建一个/etc/init.d/nginx文件

touch /etc/init.d/nginx
chmod 755 /etc/init.d/nginx

/etc/init.d/nginx文件中写入以下内容，
源文件取自yum方式安装后的文件，不过需要自己修改一下nginx的指向位置
nginx=”/usr/local/nginx/sbin/nginx”
NGINX_CONF_FILE=”/usr/local/nginx/conf/nginx.conf”

#!/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 binary
nginx="/usr/local/nginx/sbin/nginx" 
prog=$(basename $nginx) 
 
# config file
NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf" 
 
[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx 
 
lockfile=/var/lock/subsys/nginx 
 
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 $prog -QUIT 
    retval=$? 
    echo 
    [ $retval -eq 0 ] && rm -f $lockfile 
    return $retval 
    killall -9 nginx 
} 
 
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

使用Service管理nginx服务

开启nginx服务
/etc/init.d/nginx start
service nginx start
# 配置开机启动
chkconfig nginx on

CentOS7.x配置nginx系统服务
创建一个/lib/systemd/system/nginx.service文件

touch /lib/systemd/system/nginx.service
chmod 755 /lib/systemd/system/nginx.service

在nginx.service中写入以下内容

[Unit]
Description=nginx
After=network.target
[Service]
Type=forking
#PIDFile=/usr/local/nginx/logs/nginx.pid
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/usr/local/sbin/nginx -s reload
ExecStop=/usr/local/sbin/nginx -s stop
PrivateTmp=true
[Install]
WantedBy=multi-user.target

如果使用systemctl来守护nginx的主进程的话，可以设置PIDFile
#PIDFile=/usr/local/nginx/logs/nginx.pid

最后 systemctl daemon-reload一下即可

# 刷新Service配置
systemctl daemon-reload

使用 systemctl 管理nginx.service

开启nginx服务
systemctl start nginx.service
# 配置开机启动
systemctl enable nginx.service
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