Install Tomcat 9 under Ubuntu 16.10

statement

This article was founded on March 10, 2017. Successful installation is also the day.
The links given in this paper may fail in the future.
About Tomcat self-startup, Tomcat official website prompts one mode.
But this article uses other ways.

Environmental Science

System: Ubuntu-16.10-server-amd64
User:root

Get ready

File: JDK( jdk-8u121-linux-x64.tar.gz),Tomcat(apache-tomcat-9.0.0.M17.tar.gz)
File storage directory: / root/
Installation directories: / usr/local/java (JDK), / usr/local/tomcat (Tomcat) are not created in a hurry. There are instructions in the installation process below.

install

Install JDK first (see Linux Ubuntu Installation JDK 1.8 ) Avoid jumping around and moving logically, as follows:

1. Create the / usr/local/java directory. Note that the current user is root.

mkdir  /usr/local/java

2. Unzip the JDK compressed file into the newly created / usr/local/java.

tar -zxvf /root/jdk-8u121-linux-x64.tar.gz -C /usr/local/java

3. Set up environment variables and add environment variables.

nano /etc/profile

#set java environment
export JAVA_HOME=/usr/local/java/jdk1.8.0_121
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

4. Set the default JDK.

update-alternatives --install /usr/bin/java java /usr/local/java/jdk1.8.0_121/bin/java 300

update-alternatives --install /usr/bin/javac javac /usr/local/java/jdk1.8.0_121/bin/javac 300

5. Check to see if it is successful, if successful, as follows.

java -version

java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

Install Tomcat again (see https://wolfpaulus.com/java/t...).
Still move logic here.

1. Create a dedicated user Tomcat for Tomcat. Note that the following command is one line, no line breaks, and the success is shown below.

adduser \--system \--shell /bin/bash \--gecos 'Tomcat Java Servlet and JSP engine' \--group \--disabled-password \--home /home/tomcat \tomcat

Adding system user 'tomcat' (UID 108) ...
Adding new group 'tomcat' (GID 113) ...
Adding new user 'tomcat' (UID 108) with group 'tomcat' ...
Creating home directory '/home/tomcat' ...

2. Unzip the Tomcat compressed file into / usr/local / directory.

tar -zxvf /root/apache-tomcat-9.0.0.M17.tar.gz -C /usr/local/

3. Create folder soft links.
Note: Before creating, you need to see if it already exists and if so, you need to execute rm-f/usr/local/tomcat

ln -s /usr/local/apache-tomcat-9.0.0.M17 /usr/local/tomcat

4. Modify permissions.

chown -R tomcat:tomcat /usr/local/tomcat/*
chmod +x /usr/local/tomcat/bin/*.sh

5. Start Tomcat. Access 192.168.189.129:8080 in the browser (where IP address and port number have to be changed to their own).

/bin/su - tomcat -c /usr/local/tomcat/bin/startup.sh

6. Stop Tomcat.

/bin/su - tomcat -c /usr/local/tomcat/bin/shutdown.sh

7. Tomcat runs when the system starts. That is Tomcat auto-start.

nano /etc/init.d/tomcat

#!/bin/bash
 
### BEGIN INIT INFO
# Provides:        tomcat
# Required-Start:  $network
# Required-Stop:   $network
# Default-Start:   2 3 4 5
# Default-Stop:    0 1 6
# Short-Description: Start/Stop Tomcat server
### END INIT INFO
 
PATH=/sbin:/bin:/usr/sbin:/usr/bin
 
start() {
 /bin/su - tomcat -c /usr/local/tomcat/bin/startup.sh
}
 
stop() {
 /bin/su - tomcat -c /usr/local/tomcat/bin/shutdown.sh 
}
 
case $1 in
  start|stop) $1;;
  restart) stop; start;;
  *) echo "Run as $0 &lt;start|stop|restart&gt;"; exit 1;;
esac

8. Modify permissions and update system startup items.

chmod 755 /etc/init.d/tomcat

update-rc.d tomcat defaults

9. Reboot the system and check whether Tomcat is self-booting. Of course, browser access is also possible.

reboot

ps -ef|grep tomcat

Reference document

Install JDK: Linux Ubuntu Installation JDK 1.8
Install Tomcat: Installing Java 8 and Tomcat 8 on Debian Jessie or Raspbian or RedHat

Posted by Kryptix on Mon, 15 Apr 2019 23:00:33 -0700

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