How to build a tomcat container in CentOS

Here we need to configure the JDK1.8 + Tomcat 8 environment. Tomcat is a web container that runs web applaction.

1. Install JDK1.8
1. Download
Http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Unable to directly obtain the download address, you can only download from the local machine before uploading the rpm package to the server.

Network Disk sharing address:
Jdk-8u45-linux-x64.tar.gz
Jdk-8u45-linux-x64.rpm

2. Uninstall OpenJDK

Rpm-qa | grep java

The old JDK version needs to be uninstalled online, if any.

3. Installation
Install after uploading:

# Rpm-ivh/tmp/jdk-8u45-linux-x64.rpm

Preparing... ######################################## ### [100%]
1: jdk1.8.0 _ 45 ##################################### ###### [100%]
Unpacking JAR files...
Rt. jar...
Jsse. jar...
Charsets. jar...
Tools. jar...
Localedata. jar...
Jfxrt. jar...
Plugin. jar...
Javaws. jar...
Deploy. jar...

The JDK installation path is/usr/java.

4. Verify that jdk is successfully installed.

# Java-version

Java version "1.8.0 _ 45"
Java (TM) SE Runtime Environment (build 1.8.0 _ 45-b14)
Java HotSpot (TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

5. Set environment variables

Vim/etc/profile
Join:
JAVA_HOME =/usr/java/jdk1.8.0 _ 45
JRE_HOME =/usr/java/jdk1.8.0 _ 45/jre
PATH = $ PATH: $ JAVA_HOME/bin: $ JRE_HOME/bin
Export JAVA_HOME JRE_HOME PATH CLASSPATH

6. Make the settings take effect

Source/etc/profile

7. View environment variables

Echo $ PATH

2. Install Tomcat 8
1. Download

Cd/tmp
Wget http://mirror.bit.edu.cn/apache/tomcat/tomcat-8/v8.0.23/bin/apache-tomcat-8.0.23.tar.gz
Tar-zxvf apache-tomcat-8.0.23.tar.gz
Mv apache-tomcat-8.0.23/usr/local/tomcat

2. Start Tomcat

/Usr/local/tomcat/bin/startup. sh

Using CATALINA_BASE:/usr/local/tomcat
Using CATALINA_HOME:/usr/local/tomcat
Using CATALINA_TMPDIR:/usr/local/tomcat/temp
Using JRE_HOME:/usr/java/jdk1.8.0 _ 45/jre
Using CLASSPATH:/usr/local/tomcat/bin/bootstrap. jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.

Tomcat started successfully.

Check whether the JAVA environment variables are correctly set and whether the firewall has enabled port 8080.

3. Stop Tomcat

/Usr/local/tomcat/bin/shutdown. sh

4. Add users in Tomcat

Vim/usr/local/tomcat/conf/tomcat-users.xml

Add the following to tomcat-users angle brackets:

<Role rolename = "manager-gui"/>
<User username = "tomcat" password = "123456" roles = "manager-gui"/>
<Role rolename = "admin-gui"/>
<User username = "admin" password = "123456" roles = "admin-gui"/>

Restart tomcat.

5. Visit the Tomcat homepage.
Http:/// IP: 8080

There are three options:
Server Status
Manager App
Host Manager

Manager-gui roles correspond to Server Status and Manager App
Admin-gui role corresponds to Host Manager

6. Put the test into the war package
1) drop the war package webapp1.war in the tomcat directory \ webapps \
2) restart Tomcat
3) access http: // IP: 8080/webapp1 in the browser to check whether the operation is successful.