CentOS installation JDK, Tomcat, MySQL deployment

Installing the JDK

1. Upload a local download of the compressed package, in the terminal input:yum install lrzsz wait for the installation to complete after input:rz Select File Add

2. go to the local directory to create the Java Directory folder:cd/usr/local/ Create folder Java :mkdir java

3. set permissions for the newly created folder:sudo chmod-r 777/usr/local/java

4. Copy the uploaded jdk files to the development directory:cp jdk-8u171-linux-x64.tar.gz/usr/local/ Java

5. go to Java directory:Cd/usr/local/java unzip in current directory:TAR-ZXVF Jdk-8u171-linux-x64.tar.gz a jdk1.8.0_171 folder will appear after decompression

6. set permissions for the current folder:sudo chmod-r 777 jdk1.8.0_171

7. Configure environment variables:VI /etc/profile Press i to enter edit mode at the end, add the following:

Export java_home=/usr/local/java/jdk1.8.0_171

Export path= $JAVA _home/bin: $PATH

Export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

(The configured directory must be consistent with your own directory)

When you are finished editing, press ESC shift+q appears: Edit wq save to exit

6. Verify that the environment is installed: java javac appears as follows:

Installing Tomcat

1. Similarly, the locally downloaded Tomcat is uploaded to the centos system via securecrt

2. Enter the/usr/local directory to create the Tomcat directory folder mkdir/usr/local /tomcat

1. Copy the uploaded file to the specified directory:CP apache-tomcat-9.0.8.tar.gz/usr/local/tomcat

2. go to the development directory to begin decompression:cd/usr/local/tomcat tar-zxvf apache-tomcat-9.0.8.tar.gz

3. after decompression there will be a folder:apache-tomcat-9.0.8

4. Open the file /etc/profile file and append the code to the end of the file:

catalina_home=/usr /local/tomcat/apache-tomcat-9.0.8

catalina_base=/usr/local/tomcat/apache-tomcat-9.0.8

Path= $PATH: $CATALINA _base/bin

Export PATH Catalina_base

Press ESC shift+q Wq save to exit

go to the Make directory CD /usr/local/tomcat/apache-tomcat-9.0.8

./bin/startup.sh start the Tomcat service

Install MySQL

1. test whether MySQL has been installed , enter command:mysql-server

the following message appears stating that MySQL has not been installed

2. you need to download it manually and then install mysql-server, which uses the wget command (yum install wget This command is important, or the MySQL package cannot be loaded .

Local download http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

3. use the RZ command to upload to centos , terminal input command:rpm -IVH mysql-community-release-el7-5.noarch.rpm

Check if installation is successful, such as installation : ls-1/etc/yum.repos.d/mysql-community*

Install the Mysql-server as soon as it is installed.

Yum Install Mysql-server

start service mysqld Start,

To create a root administrator: mysqladmin-u root Password 123456

Log in to MySQL: mysql-u root-p

If the installation is successful:

CentOS installation JDK, Tomcat, MySQL deployment