ECS Builds a Java Web Development Environment

We can use the one-hour instance experience given to us by Alibaba Cloud ecs:
https://developer.aliyun.com/adc/scenario/bbad6f5e0cba4c0ba5c904f6cf06a8d0

1. Create resources

Click Create Resource and wait for the Alibaba Cloud instance allocated to us by the system:

2. Connect to ECS

This time, use putty to connect to the Alibaba Cloud instance:

3. Install JDK1.8

1. Run the following command to view the JDK version in the yum source.
   yum list java*
   
2. Run the following command to install JDK1.8 using yum.
   yum -y install java-1.8.0-openjdk*
   
3. Execute the following command to check whether the installation is successful.
   java -version
   

Fourth, install the MySQL5.7 database

1. Execute the following command to download and install the official MySQL Yum Repository.

wget http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
yum -y install mysql57-community-release-el7-10.noarch.rpm
yum -y install mysql-community-server

2. Execute the following command to start the MySQL database.

systemctl start mysqld.service

3. Execute the following command to view the initial MySQL password.

grep "password" /var/log/mysqld.log

4. Execute the following command to log in to the database.

mysql -uroot -p

5. Run the following command to change the default MySQL password.

 set global validate_password_policy=0;  #修改密码安全策略为低（只校验密码长度，至少8位）。
ALTER USER 'root'@'localhost' IDENTIFIED BY '12345678';

6. Run the following command to grant remote management rights to the root user.

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '12345678';

7. Enter exit to exit the database.

5. Install Tomcat

1. Run the following command to download the Tomcat compressed package.

wget https://mirror.bit.edu.cn/apache/tomcat/tomcat-8/v8.5.57/bin/apache-tomcat-8.5.57.tar.gz

2. Execute the following command to decompress the downloaded Tomcat package.

tar -zxvf apache-tomcat-8.5.57.tar.gz 

3. Execute the following command to modify the name of Tomcat.

mv apache-tomcat-8.5.57 /usr/local/Tomcat8.5

4. Execute the following command to authorize Tomcat.

chmod +x /usr/local/Tomcat8.5/bin/*.sh

5. Execute the following command to modify the default port number of Tomcat to 80.
Note: The default port number of Tomcat is 8080.

sed -i 's/Connector port="8080"/Connector port="80"/' /usr/local/Tomcat8.5/conf/server.xml

6. Start Tomcat.

/usr/local/Tomcat8.5/bin/./startup.sh

6. Access Tomcat

1. Open the browser and enter the ECS public network address in the address bar, for example: 139.196.225.35
   If the following interface is displayed, it means that Tomcat is installed and configured successfully.
   
2. So far, the Java Web development environment has been built!