Tomcat Management Platform

Tomcat's management platform
When using Tomcat's WebApps directory to manage Web apps, you can't control the start and stop of a single web App
To this end, Tomcat provides a management platform that lists all Web applications and their status, and provides the ability to control the start, stop, and unload of each Web application

In the address bar of the browser, enter
http://localhost:8080/
Open Tomcat Home page, click the Manager app link on the Tomcat home page to access the Tomcat management platform
The results are as follows

Login dialog box, you need to enter a user name and password

Because it is the first time you are logged into the Tomcat management platform, you do not know the username and password
So, click the Cancel button, and the browser jumps to another page

The browser displays information about the login management platform
According to the message, to access the management platform, you need to add an account with administrative privileges in the Conf\tomcat-users.xml file.

Tomcat 7.0 defines 4 different roles
Specific roles and the content of their management, as follows
Manager-gui-allows access to the HTML GUI and the status pages
Manager-script-allows access to the text interface and the status pages
Manager-jmx-allows access to the JMX proxy and the status pages
Manager-status-allows access to the status pages only

Chinese translation
Manager-gui: Allow access to HTML graphics management Console and Status page
Manager-script: Allow access to text interfaces and status pages
MANAGER-JMX: Allow access to JMX agents and status pages
Manager-status: Only allow access to status pages

Add admin Account
The Tomcat management platform is an HTML page in the Conf\tomcat-users.xml file that adds the Manager-gui role and creates a user with a read role, with a username of itcast, with a password of 123

The code is as follows

<role rolename= "Manager-gui"/>
<user username= "itcast" password= "123" roles= "Manager-gui"/>

Configuration complete, restart the Tomcat server
Access the Manager app connection again, in the login dialog box that pops up
Enter user name Itcast, password 123, click OK

At this point, you will see the Tomcat Management platform page

The Tomcat management platform lists all the Web applications under the WebApps directory.

and provides the ability to manage these web apps
Start, used to start a web App
Stop, used to stop an app
Reload, used to stop and reload a web App
Undeploy, used to indicate uninstall and delete an app

Note that after you modify the Web. xml file for a running website, you must restart the Web app to make changes to the. xml file take effect