Linux environment to build Tutorial

1. Install VMWare virtual machine

VMWare Download: https://www.cr173.com/soft/68480.html

Fool installation: Continue to click Next

To installing permanent use requires a key, there is a lot on Baidu

2. mounted on VM centos7 (installation image)

2.1 Select Typical, click Next

2.2 installation path selection centos

2.3 to your virtual machine a name and set the storage location

2.4 Click Finish

Enter directly

Select Chinese as well as the installation location

Set the root password

Then restart

JDK, Tomcat, MySQL installation

1 Use SecureFX upload JDK, Tomcat archive of linux

2 using SecureCRT installation configuration JDK, Tomcat

An installation configuration JDK 

 1 . Decompressing compressed JDK
  2 . JDK Configuration Environment variables
  1 ) VI / etc / Profile
  2 ) disposed in the rearmost JDK environment variables: 
 #java Environment 
Export the JAVA_HOME . = / Zking / jdk1 . 8 .0_151 (JDK decompression path) 
Export the JRE_HOME = $ {the JAVA_HOME} / JRE 
Export the CLASSPATH =:. $ {the JAVA_HOME} / lib: $ {the JRE_HOME} / lib 
Export the pATH = $ {the JAVA_HOME} / bin: $ the pATH
  . 3 ) set environmental variables 
 Source / etc / Profile
  . 4 ) check the environment variable JDK 
 Java - Version 
 
 3.2 . 2 installation configuration the Tomcat 
 
 . 1The decompressor Tomcat
  2 configure the environment variables.
  . 1 ) VI / etc / Profile
  2 ) disposed in the rearmost Tomcat environment variables: 
 #tomcat 
 Export the TOMCAT_HOME = / zking / tomcat--Apache 8.5 . 20 is (Tomcat decompression path)
  . 3 ) Source / etc / Profile
  . 4 ) start Tomcat: ./ the startup.sh 

  command: 
  . 1 ) .gz unpack the archive: the tar - zxvf compressed name
   2 ) .tar compression decompression: tar -vxf compressed package name

2, install mysql
uninstall mariadb, otherwise there will be conflicts installation MySql
1 RPM -qa | grep MariaDB
2 -e - nodeps RPM file name

rpm -Uvh mysql57-community-release-el7-11.noarch.rpm（mysql源）
或者
yum localinstall mysql57-community-release-el7-8.noarch.rpm

cd /etc/yum.repos.d（目录下多了mysql的文件）
yum install mysql-community-server（安装mysql）
中途Y/D/N        Y
service mysqld start（启动服务）
systemctl|grep mysql（检测mysql是否正在启动）
开机自启动
 systemctl enable mysqld
 systemctl daemon-reload

默认密码是保存在/var/log/mysqld.log文件中
mysql -u root -p
set password=password(‘新密码’);

这是因为密码的规则，设置简单规则
set global validate_password_policy=0
set password=password(‘新密码’);

接下来又是防火墙问题了
以及外网访问权限问题
grant all privileges on *.* to 用户名@'%' identified by '密码';
grant all privileges on *.* to root@'%' identified by 'Xiaoli@2019';
flush privileges;

WuTeng@3088
注意：mysql-community.repo这个文件中可以换数据库版本使用。Enabled=1

3、部署web项目
将war包丢到tomcat的webapp下
启动后报错，将db.properties改掉

多处需要注意、防火墙开放端口
开放端口
firewall-cmd --zone=public --add-port=3306/tcp --permanent
跟新防火墙规则
firewall-cmd --reload
防火墙列表
firewall-cmd --zone=public --list-ports
防火墙状态
systemctl status firewalld
启动防火墙
systemctl start firewalld
关闭防火墙
systemctl stop firewalld.service
systemctl disable firewalld.service

1 通过WinSCP将window中下载的JDK的安装包，传输到centos中

首先在centos中创建一个文件夹，用来保存JDK，Tomcat，MySQL等软件安装包

解压，使用命令 tar -axvf 安装包

配置环境变量，需要修改/etc/profile文件，使用命令

Vi /etc/profile,点击insert进入编辑模式：在文件末尾处添加如下内容：
export JAVA_HOME=/soft/jdk1.8.0_151
export JRE_HOME=JAVAHOME/jreexportCLASSPATH=.: {JAVA_HOME}/jre export CLASSPATH=.:JAVA 
H
    
OME/jreexportCLASSPATH=.:{JAVA_HOME}/lib:JREHOME/libexportPATH= {JRE_HOME}/lib export PATH=JRE 
H
    
OME/libexportPATH={JAVA_HOME}/bin:$PATH

点击esc,然后输入：wq保存退出

使配置文件生效，使用命令 source profile

与安装jdk的步骤与方法大同小异
tomcat安装
使用命令解压
tar -zxvf 安装包名

配置Tomcat，修改catalina.sh文件，文件内容如下
export JAVA_HOME=/soft/jdk1.8.0_151
export JRE_HOME= /soft/jdk1.8.0_151/jre
export TOMCAT_HOME=/soft/apache-tomcat-8.5.20
export CATALINA_HOME=/soft/apache-tomcat-8.5.20

8.可能访问不到，有可能是防火墙的问题，需要设置
(1)将端口8080加入到防火墙中
firewall-cmd --zone=public --add-port=8080/tcp --permanent

(2)更新防火墙规则
firewall-cmd --reload

(3)查看防火墙中已打开的端口
firewall-cmd --zone=public --list-ports

重新访问即可

MySQL安装
将rpm包安装上，使用命令 rpm -Uvh 安装包