DescriptionApache Tomcat implements several Java EE specifications including Java Servlet, JavaServer Pages, Java EL, and WebSocket, and provides a “pure Java” HTTP web server environment in which Java code can run.
Apache License 2.0
installation
Firstly, make sure jdk is installed.
Download the latest binary release of Tomcat from the official site
wget http://apache.website-solution.net/tomcat/tomcat-8/v8.5.41/bin/apache-tomcat-8.5.41.tar.gz
sudo tar zxvf apache-tomcat-8.5.41.tar.gz -C /opt/
sudo ln -s /opt/apache-tomcat-8.5.41 /opt/tomcat
Then, for security purposes, Tomcat should be run as an unprivileged user( not root), so we have to create necessary group and users.
sudo groupadd tomcat
And create a tomcat user. And we make this user a member of tomcat group, with a shell of /bin/false( so nobody can log into the account ), and with a home directory of /opt/tomcat (where we install Tomcat)
sudo useradd -s /bin/false -g tomcat -d /opt/tomcat tomcat
Now, tomcat user is set up.
Give the tomcat group ownership over the entire installation directory:
sudo chgrp -R tomcat /opt/tomcat
And give the tomcat group read access to the conf directory and all of its contents.
sudo chmod -R g+r conf
sudo chmod g+x conf
sudo chown -R tomcat webapps/ work/ temp/ logs/
Create a systemd Service file
sudo vim /etc/systemd/system/tomcat.service
And paste this:
[Unit]
Description=Apache Tomcat Web Application Container
After=network.target
[Service]
Type=forking
Environment=JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-amd64/jre
Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
Environment=CATALINA_HOME=/opt/tomcat
Environment=CATALINA_BASE=/opt/tomcat
Environment='CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC'
Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'
ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/opt/tomcat/bin/shutdown.sh
User=tomcat
Group=tomcat
UMask=0007
RestartSec=10
Restart=always
[Install]
WantedBy=multi-user.target
And remember to replace your own java home.
Next, reload the systemd daemon
sudo systemctl daemon-reload
sudo systemctl start tomcat
sudo systemctl status tomcat
How you can visit http://localhost:8080 to check Tomcat page. Oh if you have ufw installed, don’t forget to allow traffic by:
sudo ufw allow 8080
And finally, if you want to go with Tomcat when start up, you can enable Tomcat automatically starts at boot:
sudo systemctl enable tomcat
management
In order to use the manager web app that comes with Tomcat, we must add a login to our Tomcat server.
sudo vim /opt/tomcat/conf/tomcat-users.xml
and edit:
<tomcat-users . . .>
<user username="admin" password="password" roles="manager-gui,admin-gui"/>
</tomcat-users>
Restart your server
sudo systemctl restart tomcat
you can get what you want:
http://localhost:8080/manager/html
http://localhost:8080/host-manager/html
questions
修改 Tomcat 端口
修改 conf 目录下 server.xml 文件，修改 http 访问端口，默认为 8080
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
搜索 Connector port 修改这里的端口号。