**详细编译安装nginx请参考[【Nginx目录结构与配置文件详解】](https://editor.csdn.net/md/?articleId=103508936)以及[【Nginx安装部署】](https://editor.csdn.net/md/?articleId=103458639)，在这里就进行简单安装**
# 安装Nginx
## 环境介绍
**操作系统：**
```bash
[root@localhost ~]# cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core) 
[root@localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-957.el7.x86_64 #1 SMP Thu Nov 8 23:39:32 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
```
**nginx软件版本：** **nginx-1.17.6.tar.gz**
## 安装依赖
**注意：编译安装一定要安装开发工具，否则无法进行安装或安装报错**
```bash
[root@localhost opt]# yum -y install openssl openssl-devel zlib zlib-devel pcre pcre-devel make gcc gcc-c++
```
## 安装nginx
```bash
[root@localhost ~]# cd /opt/
[root@localhost opt]# wget http://nginx.org/download/nginx-1.17.6.tar.gz
[root@localhost opt]# tar zxf nginx-1.17.6.tar.gz 
[root@localhost opt]# cd nginx-1.17.6/
[root@localhost opt]# cd nginx-1.17.6/
[root@localhost nginx-1.17.6]# 
[root@localhost nginx-1.17.6]# ls
auto  CHANGES  CHANGES.ru  conf  configure  contrib  html  LICENSE  man  README  src
[root@localhost nginx-1.17.6]# ./configure --prefix=/usr/local/nginx && make && make install
```
## 启动测试nginx
```bash
[root@localhost nginx-1.17.6]# cd /usr/local/nginx/
[root@localhost nginx]# ls
conf  html  logs  sbin
[root@localhost nginx]# cd sbin/
[root@localhost sbin]# ./nginx 
[root@localhost sbin]# netstat -anpl | grep nginx		//查看端口
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      11881/nginx: master 
unix  3      [ ]         STREAM     CONNECTED     53405    11881/nginx: master  
unix  3      [ ]         STREAM     CONNECTED     53404    11881/nginx: master  
[root@localhost sbin]# ps aux | grep nginx		//查看进程
jia       5496  0.0  0.0 302400   852 ?        Sl   10:58   0:00 /usr/libexec/ibus-engine-simple
root     11881  0.0  0.0  20560   620 ?        Ss   11:23   0:00 nginx: master process ./nginx
nobody   11882  0.0  0.1  23080  1632 ?        S    11:23   0:00 nginx: worker process
root     11896  0.0  0.1 112728   988 pts/0    S+   11:24   0:00 grep --color=auto ngin
```
# 设置为系统命令
```bash
[root@localhost sbin]# ln nginx /usr/local/sbin/
[root@localhost ~]# nginx -t		//检查nginx语法
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@localhost ~]# nginx -s stop		//停止nginx
[root@localhost ~]# which nginx		//查看启动程序位置
/usr/local/sbin/nginx
```
# 方法一利用rc.local脚本
rc.local是启动加载文件,在linux中要把一个程序加入开机启动，一般可以通过修改rc.local来完成，这个文件时开机就要加载的文件，所以我们就可以利用linux这个文件设置nginx开机自启动
```bash
[root@localhost ~]# cat /etc/rc.local 		//文件存放在/etc目录下

下面时rc.local的文件内容：

#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.
touch /var/lock/subsys/local
```
利用这个文件可以设置自己想在开机时启动的命令，直接把自己想执行的命令写到rc.local中就可以了
我们把nginx启动命令加入此文件中
```bash
[root@localhost ~]# echo sh /usr/local/nginx/sbin/nginx >> /etc/rc.local 
[root@localhost ~]# cat /etc/rc.local 
#!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot.
touch /var/lock/subsys/local
/usr/local/nginx/sbin/nginx
如果你上面把nginx设置为系统命令那你就可以直接写命令就好了
nginx
```
然后让我们重启系统再次查看端口和进程
```bash
[root@localhost ~]# reboot
重启后发现nginx自动启动了
[root@localhost ~]# netstat -anpl | grep nginx
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      4847/nginx: master  
unix  3      [ ]         STREAM     CONNECTED     39265    4847/nginx: master   
unix  3      [ ]         STREAM     CONNECTED     39264    4847/nginx: master   
[root@localhost ~]# ps aux | grep nginx
root      4847  0.0  0.0  20560   612 ?        Ss   11:45   0:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody    4848  0.0  0.1  23080  1388 ?        S    11:45   0:00 nginx: worker process
root      4860  0.0  0.1 112724   988 pts/0    S+   11:45   0:00 grep --color=auto nginx
[root@localhost ~]# 
```
# 方法二设置系统服务
## 推荐设置开机自启
### 配置启动生成pid文件
pid文件是进程文件里面存放的是程序运行的进程ID也就是进程号
nginx生成pid文件需要修改配置文件
**修改内容如下：**
```bash
默认配置文件有这一条，如果没有请在nginx.conf中找到这一条然后将前面注释删除就可以了
pid        logs/nginx.pid;
```

### 在/usr/lib/systemd/system路径下添加nginx.service文件
/usr/lib/systemd/system		此目录是用来存放一些系统服务的
**nginx文件内容：**
```bash
[root@localhost system]# cat nginx.service 
[Unit]
Description=nginx		//描述
After=syslog.target network.target remote-fs.target nss-lookup.target		\\描述服务类别

[Service]
Type=forking		//设置运行方式，后台运行
PIDFile=/usr/local/nginx/logs/nginx.pid		//设置PID文件
ExecStart=/usr/local/nginx/sbin/nginx		//启动命令
ExecReload=/bin/kill -s HUP $MAINPID		//重启命令
ExecStop=/bin/kill -s QUIT $MAINPID			//关闭命令
PrivateTmp=true		//分配独立的临时空间
*注意命令需要写绝对路径
[Install]		///服务安装的相关设置，可设置为多用户
WantedBy=multi-user.target		
```
**注意：此文件需要754的权限**
### 测试启动关闭
```bash
[root@localhost ~]# systemctl start nginx		//启动服务
[root@localhost ~]# netstat -anpl | grep nginx
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      5249/nginx: master  
unix  3      [ ]         STREAM     CONNECTED     42458    5249/nginx: master   
unix  3      [ ]         STREAM     CONNECTED     42459    5249/nginx: master  
[root@localhost ~]# systemctl stop nginx			//关闭服务
[root@localhost ~]# netstat -anpl | grep nginx
[root@localhost ~]# systemctl restart nginx			//重新启动服务
[root@localhost ~]# netstat -anpl | grep nginx
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      5289/nginx: master  
unix  3      [ ]         STREAM     CONNECTED     45346    5289/nginx: master   
unix  3      [ ]         STREAM     CONNECTED     45347    5289/nginx: master   
```
**需要注意的是使用之前执行脚本来启动服务的，无法使用此方法关闭服务**
### 设置开机自启动
```bash
[root@localhost ~]# systemctl enable nginx
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.
[root@localhost ~]# systemctl enable nginx
```
重启看效果
```bash
[root@localhost ~]# netstat -anpl | grep nginx
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      4081/nginx: master  
unix  3      [ ]         STREAM     CONNECTED     32429    4081/nginx: master   
unix  3      [ ]         STREAM     CONNECTED     32428    4081/nginx: master  
```
## init.d设置开机启动
**init启动方式在centos7系统版本已经不推荐使用了**
### 在/etc/init.d目录中创建启动文件nginx
**文件内容如下：**
```bash
#!/bin/bash
# chkconfig: 345 80 20	//启动顺序
# description: start the nginx deamon		//说明
# Source function library
. /etc/rc.d/init.d/functions

prog=nginx
# 根据自己的路径改写CATALANA_HOME
CATALANA_HOME=/usr/local/nginx
export CATALINA_HOME

case "$1" in
start)
    echo "Starting nginx..."
    $CATALANA_HOME/sbin/nginx
    ;;

stop)
    echo "Stopping nginx..."
    $CATALANA_HOME/sbin/nginx -s stop
    ;;

restart)
    echo "Stopping nginx..."
    $CATALANA_HOME/sbin/nginx -s stop
    sleep 2
    echo
    echo "Starting nginx..."
    $CATALANA_HOME/sbin/nginx
    ;;
*)
    echo "Usage: $prog {start|stop|restart}"
    ;;
esac
exit 0
```
### 设置权限
```bash
[root@localhost ~]# chmod +x /etc/init.d/nginx		//设置执行权限
```
### 测试启动
```bash
[root@localhost init.d]# service nginx start			//启动nginx
Starting nginx (via systemctl):                            [  确定  ]
[root@localhost init.d]# netstat -anpl | grep nginx
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      4081/nginx: master  
unix  3      [ ]         STREAM     CONNECTED     38534    4081/nginx: master   
unix  3      [ ]         STREAM     CONNECTED     38535    4081/nginx: master 
[root@localhost init.d]# service nginx stop			//关闭nginx
Stopping nginx (via systemctl):                            [  确定  ]
[root@localhost init.d]# netstat -anpl | grep nginx
[root@localhost init.d]# service nginx restart 			//重新启动nginx
Restarting nginx (via systemctl):                          [  确定  ]
[root@localhost init.d]# netstat -anpl | grep nginx
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      5304/nginx: master  
unix  3      [ ]         STREAM     CONNECTED     43218    5304/nginx: master   
unix  3      [ ]         STREA  
```
**在centos7中init.d中的服务默认也会在system目录中**

ITPub博客

编译安装nginx时配置开机自启

最新文章