Linux installs Java JDK, MySQL, tomcat

Installing JAVAJDK 1.8

Check if RPM-QA is installed | grep JDK

RPM mode installation Download java1.8 JDK http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/ jdk-8u131-linux-x64.rpm

Upload to Usr/java

Add executable permissions

Cd/usr/java

chmod +x jdk-8u131-linux-x64.rpm

Perform the rpm command to install

RPM-IVH jdk-8u131-linux-x64.rpm (I is the installation meaning, VH is the display installation process)

Check if the installation is successful

Java--version

RPM installation does not require configuration of environment variables

Install MySQL 5.7.17 (RMP mode installation)

Download RPM Package Http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

1. Check if RPM-QA is installed | grep mysql

If installed can remove rpm-e--nodeps mysql name

2. Create MySQL group and MySQL user

Groupadd MySQL

Useradd-r-G MySQL MySQL

After completion can be ID MySQL view

3. Upload MySQL to/usr/local/

4. Run the command to extract to/usr/local/

Cd/usr/local

　　TAR-XVF Mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

5. Uninstalling the system's own mariadb-lib

Rpm-qa | grep mariadb

　　RPM-E mariadb-libs-5.5.56-2.el7.x86_64--nodeps

6. Installing the simplest Mysql-server service requires only the following 4 installation packages, which are installed in sequence

　　RPM-IVH mysql-community-common-5.7.17-1.el6.x86_64.rpm

RPM-IVH mysql-community-libs-5.7.17-1.el6.x86_64.rpm

RPM-IVH mysql-community-client-5.7.17-1.el6.x86_64.rpm

　　RPM-IVH mysql-community-server-5.7.17-1.el6.x86_64.rpm

7. Start MySQL

Service mysqld Start

Get temporary password:grep ' temporary password '/var/log/mysqld.log

8. Login to reset Password

　　Mysql-uroot-p

Enter password

　　Set Password = password (' 1234 '); --You can modify this policy by saying that it is not compliant with security policy

Set global validate_password_policy=0;
　　set global validate_password_length=4; --and then you can change it.

9. Restart Service login with new password

　　Exit

Service mysqld Restart

Mysql-uroot-p

1234

10. Configure Boot Boot

Create a configuration file to start MySQL:touch/usr/lib/systemd/system/mysqld.service

Edit this file:vim/usr/lib/systemd/system/mysqld.service

　　

[Unit]description=MySQL serverdocumentation=man:mysqld (8) documentation=http ://dev.mysql.com/doc/refman/en/using-systemd.htmlafter=network.targetafter=  Syslog.target[install]wantedby=multi-user.target[service]user=Mysqlgroup=  Mysqlexecstart=/usr/sbin/mysqld--defaults-file=/etc/

Execstart fill in the actual path

　　Which mysqld

Output = /usr/sbin/mysqld

Start mysql5.7 by Systemctl mode

　　Systemctl Start mysqld

Set boot up

　　Systemctl Enable Mysqld　　

Cancel Boot Boot

　　Systemctl Disable Mysqld

View service Current status systemctl list-unit-files | grep mysqld

Installing Tomcat 9.0

Download Tomcat http://tomcat.apache.org/download-90.cgi Download tar.gz

Linux installs Java JDK, MySQL, tomcat