一. 通过yum安装jdk，mysql，python，redis，nginx

1.安装jdk

yum install -y java-1.8.0-openjdk

2.安装mysql

   在安装mysql的目录下创建一个文件夹

mkdir mysql
cd mysql

   下载 Mysql Yum

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
##如果没有wget 用yum安装
yum install wget

   安装 Yum

yum -y install mysql57-community-release-el7-10.noarch.rpm

   安装 Mysql

yum install mysql-server

    运行 Mysql

service mysqld start 

   获取初始密码

grep "password" /var/log/mysqld.log
#### 下面是返回的内容，密码也末尾
2019-04-16T08:49:16.906290Z 1 [Note] A temporary password is generated for root@localhost: w*3tUglUo=p:

   修改密码

### 使用临时密码登陆
mysql -u root -p

### 由于 5.7 处于安全考虑，不让设置简单密码，要先更改其密码机制
set global validate_password_policy=LOW;
### 设置密码长度
set global validate_password_length=6;
### 修改密码
SET PASSWORD = PASSWORD('111111');
flush privileges;

   远程和本地访问

use mysql;
grant all privileges  on *.* to root@'%' identified by "password";
### 使配置生效
flush privileges;
vi /etc/my.cnf   #编辑mysql配置文件
在 [mysqld]和[mysql]下添加
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
service mysqld restart 

   设置字符集

### 登陆数据库后
set character_set_database=utf8;
flush privileges;

3.安装redis

   安装数据库

yum install epel-release
yum install redis

   启动redis服务

systemctl start redis

   查看redis状态

systemctl status redis
systemctl stop redis 停止服务
systemctl restart redis 重启服务

   设置开机自启动

systemctl enable redis

4.安装nginx

   添加源

##默认情况Centos7中无Nginx的源，最近发现Nginx官网提供了Centos的源地址。因此可以如下执行命令添加源：
rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

   安装Nginx

yum install -y nginx

   启动Nginx并设置开机自动运行

systemctl start nginx.service
systemctl enable nginx.service
2.nginx的配置文件在/etc/nginx/nginx.conf
3.自定义的配置文件放在/etc/nginx/conf.d
3.全局的配置文件放在/etc/nginx/conf.d/default.conf
4.项目文件存放在/usr/share/nginx/html/
5.日志文件存放在/var/log/nginx/

5,安装node

yum install -y nodejs
node -v
##随着命令窗口关闭node服务也会关闭
#方法
##安装forever
npm install forever -g 
##使用forever启动js文件
forever start app.js