Install Tomcat and configure the JDK environment in CentOS

Install Tomcat and configure the JDK environment in CentOS

Step 1: Download JDK and Tomcat
Download JDK
Https://edelivery.Oracle.com/otn-pub/java/jdk/7u45-b18/jdk-7u45-linux-x64.rpm
Or: # wget https://edelivery.oracle.com/otn-pub/java/jdk/7u45-b18/jdk-7u45-linux-x64.rpm
Version: jdk-7u45-linux-x64.rpm
Install JDK
[Root @ thinkpig00ss] # rpm-ivhjdk-7u45-linux-x64.rpm
Download tomcat7
Http://apache.fayea.com/apache-mirror/tomcat/tomcat-7/v7.0.47/bin/apache-tomcat-7.0.47.tar.gz
Or:
# Wget http://apache.fayea.com/apache-mirror/tomcat/tomcat-7/v7.0.47/bin/apache-tomcat-7.0.47.tar.gz
Version: apache-tomcat-7.0.47.tar.gz
Step 2. Uninstall the old tomcat
Uninstall Tomcat 6 automatically installed with yum
# Yum remove tomcat6
View the local jdk version
# Java-version
[Root @ thinkpig007 ss] # java-version
Java version "1.6.0 _ 24"
OpenJDK Runtime Environment (IcedTea6 1.11.13) (rhel-1.65.1.11.13.el6_4-x86_64)
OpenJDK 64-Bit Server VM (build between 0-b12, mixed mode)
[Root @ thinkpig007 ss] #
View the JDK version installed on the local machine
[Root @ thinkpig007 ss] # cd/usr/java/
Default/jdk1.7.0 _ 45/latest/
Note: The jdk directory here is the path and directory name to be filled in when we modify the/etc/profile environment variable.
ExportJAVA_HOME =/usr/java/jdk1.7.0 _ 45
(Details: "(4) add tomcat environment variables" in "step 3, install tomcat 7 ")
[Root @ thinkpig007 ss] # cd/usr/java/
[Root@thinkpig007jdk1.7.0 _ 45] # cat release
JAVA_VERSION = "1.7.0"
OS _NAME = "Linux"
OS _VERSION = "2.6"
OS _ARCH = "amd64"
SOURCE = ".: Role: includeploy: 2b1995e2c8f5 hotspot: Role/make/closed: Role hotspot/src/closed: Role/test/closed: 47eee40b7622 install: 99193876e329 jaxp: Role jdk: c5ca4daec23b jdk/make/closed: Pushed/src/closed: b6108fd9ff72 jdk/test/closed: e3c74041acc5 langtools: ba3ff27d4082pubs: 476da1da84f7 supervisor SORS: Pushed"
BUILD_TYPE = policcial
Step 3. install Tomcat 7
Install tomcat
(1)decompress apache-tomcat-7.0.47.tar.gz
[Root @ thinkpig007 ss] # tar-zxvf apache-tomcat-7.0.47.tar.gz
(2) copy the decompressed directory apache-tomcat-7.0.47 to/usr/local and rename it as tomcat7.
[Root @ thinkpig007 ss] # cp-Rapache-tomcat-7.0.47/usr/local/tomcat7
Note:/usr/local/tomcat7 is the directory path to be filled in when we want to modify the environment variable.
(3) enter the bin directory
[Root @ thinkpig007 ss] # cd/usr/local/tomcat7/
[Root @ thinkpig007 tomcat7] # cdbin/
[Root @ thinkpig007 bin] #
An error occurred while starting tomcat before modifying environment variables.
[Root @ thinkpig007 bin] #./startup. sh
Cannot find "/usr/local/tomcat"/bin/setclasspath. sh
(4) add tomcat Environment Variables
# [Root @ thinkpig007 ~] # Vi/etc/profile
Add code
# Set environment variable
ExportJAVA_HOME =/usr/java/jdk1.7.0 _ 45
Export CLASSPATH =.: $ JAVA_HOME/jre/lib/rt. jar: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar
ExportTOMCAT_HOME =/usr/local/tomcat7
ExportCATALINA_HOME =/usr/local/tomcat7
ExportPATH = $ PATH: $ JAVA_HOME/bin
(5) modify the application environment variable to make the configuration take effect.
[Root @ thinkpig007 bin] # source/etc/profile
(6) modify the environment variable and restart tomcat to start successfully.
This file is needed to runthis program
[Root @ thinkpig007 bin] #./startup. sh
Using CATALINA_BASE:/usr/local/tomcat7
Using CATALINA_HOME:/usr/local/tomcat7
Using CATALINA_TMPDIR:/usr/local/tomcat7/temp
Using JRE_HOME:/usr/java/jdk1.7.0 _ 45
Using CLASSPATH:/usr/local/tomcat7/bin/bootstrap. jar:/usr/local/tomcat7/bin/tomcat-juli.jar

(7) Disable tomcat
[Root @ thinkpig007 bin] #./shutdown. sh
Using CATALINA_BASE:/usr/local/tomcat7
Using CATALINA_HOME:/usr/local/tomcat7
Using CATALINA_TMPDIR:/usr/local/tomcat7/temp
Using JRE_HOME:/usr/java/jdk1.7.0 _ 45
Using CLASSPATH:/usr/local/tomcat7/bin/bootstrap. jar:/usr/local/tomcat7/bin/tomcat-juli.jar
[Root @ thinkpig007 bin] #
Step 4: add management Permissions
By default, Tomcat does not provide an account with administrative permissions, so you need to add an account with such permissions. Role manager-gui has this permission, but the two roles and their corresponding users are not set in the System user control file tomcat-users.xml, so you need to add such roles and users, to open the tomcat-users.xml file, add the following:
<Rolerolename = "manager-gui"/>
<Userusername = "manager" password = "manager" roles = "manager-gui"/>
Restart the Tomcat server, and the file modification takes effect.

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