Centos安装MySql、Java、Tomcat

一、安装MySql

1. 安装MySql

yum install -y mysql-server mysql mysql-devel
```

2. 启动MySql服务

service mysqld start
```

3. 为root账号设置密码

/usr/bin/mysqladmin -u root password 'your password'
```

二、安装Java（这里安装的8）

4. 下载JDK

wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u102-b14/jdk-8u102-linux-i586.rpm"
```

5. 安装JDK

rpm -ivh jdk-8u102-linux-i586.rpm
```

6. 设置环境变量

   • 编辑java.sh文件

   vim /etc/profile.d/java.sh
   ```

   • 添加如下内容

     #!/bin/bash
     JAVA_HOME=/usr/java/jdk1.8.0_102/
     PATH=$JAVA_HOME/bin:$PATH
     export PATH JAVA_HOME
     export CLASSPATH=.
     

   • 保存并退出，执行下面两个命令，搞定

   chmod +x /etc/profile.d/java.sh
   source /etc/profile.d/java.sh
   ```

三、安装Tomcat（这里安装的9）

7. 下载Tomcat

wget http://archive.apache.org/dist/tomcat/tomcat-9/v9.0.0.M17/bin/apache-tomcat-9.0.0.M17.tar.gz
```

> 传送门：[tomcat官网](http://tomcat.apache.org/ "tomcat官网")

1. 解压文件

tar -zxvf apache-tomcat-9.0.0.M17.tar.gz
```

2. 将解压后的目录复制到usr/local/下并命名为tomcat9

   cp -R apache-tomcat-9.0.0.M17 /usr/local/tomcat9
   

3. 进入bin目录

```

cd /usr/local/tomcat9/bin
```
11. 启动tomcat

```

./startup.sh
```

• 启动效果

  Using CATALINA_BASE:   /usr/local/tomcat9
  Using CATALINA_HOME:   /usr/local/tomcat9
  Using CATALINA_TMPDIR: /usr/local/tomcat9/temp
  Using JRE_HOME:        /usr/java/jdk1.8.0_102/
  Using CLASSPATH:       /usr/local/tomcat9/bin/bootstrap.jar:/usr/local/tomcat9/bin/tomcat-juli.jar
  Tomcat started.
  

• 关闭tomcat

  ./shutdown.sh