How to install manually Apache Tomcat 9 on CentOS 7 minimal Linux
We will install currently the latest version of Apache Tomcat on CentOS 7 minimal Linux machine…and currently (on day 16/08/2018) that is version 9.0.10. Because we will do this on minimal install, we don’t have Java either, so we will install the latest Java – also manually and for the day of writing, that is version 1.8.0.181. Tomcat cannot be started without the JAVA_HOME variable.
# Download Java jdk from official webite (link here) # In this case we will use Java version 8u181 tar zxvf jdk-8u181-linux-x64.tar.gz rm -f jdk-8u181-linux-x64.tar.gz mv jdk1.8.0_181/ /opt/ alternatives --install /usr/bin/java java /opt/jdk1.8.0_181/bin/java 2 # Chose your 'newly' installed version of java (in this case 1) and press enter, # and later check is that version of java - present. Screenshot here. alternatives --config java # Many application need JAVA_HOME and JRE_HOME as a variables, so we will put them on profile file # to became global variable cp /etc/profile ~/etc-profile-backup-$(date +%Y%m%d%H%M) echo "export JAVA_HOME=/opt/jdk1.8.0_181" >> /etc/profile echo "export JRE_HOME=/opt/jdk1.8.0_181/jre" >> /etc/profile # Download Tomcat. On script writing newest Tomcat version was 9.0.10 and we will install it here. curl -O http://www-us.apache.org/dist/tomcat/tomcat-9/v9.0.10/bin/apache-tomcat-9.0.10.tar.gz curl -O https://www.apache.org/dist/tomcat/tomcat-9/v9.0.10/bin/apache-tomcat-9.0.10.tar.gz.sha512 # Check SHA512 of downloaded file. If you get any record from next command you have # done something wrong witg download and try again. diff <(echo "$(sha512sum apache-tomcat-9.0.10.tar.gz | awk '{print $1}')" ) <(echo "$(cat apache-tomcat-9.0.10.tar.gz.sha512 | awk '{print $1}')") # Extract and move Tomcat to /opt tar zxvf apache-tomcat-9.0.10.tar.gz mv /opt/tomcat /opt/tomcat-$(date +%Y%m%d%H%M) 2>/dev/null # Just in case mv apache-tomcat-9.0.10 /opt/tomcat # Add CATALINA_HOME environment variable if not exists [ -z ${CATALINA_HOME} ] && echo "export CATALINA_HOME='/opt/tomcat/'" >> /etc/profile . /etc/profile || echo "CATALINA_HOME already exists. Please check" # Add user for Tomcat and grant ownerwhip on folder useradd -r tomcat --shell /bin/false chown -R tomcat:tomcat /opt/tomcat/ # Create a a systemd file. # We will give to Tomcat in this scenario 1GB of RAM (see CATALINA_OPTS value) [ ! -f /etc/systemd/system/tomcat.service ] && echo "[Unit] Description=Apache Tomcat 9 After=syslog.target network.target [Service] User=tomcat Group=tomcat Type=forking Environment=CATALINA_PID=/opt/tomcat/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 Restart=on-failure [Install] WantedBy=multi-user.target" >> /etc/systemd/system/tomcat.service || echo "File is missing" # Reload daemon because of newly added service systemctl daemon-reload # Open Firewalld port for tomcat firewall-cmd --add-port=8080/tcp firewall-cmd --add-port=8080/tcp --permanent # Start, enable and check tomcat as a service systemctl start tomcat systemctl enable tomcat systemctl status tomcat
Now you can go to web address http://SERVER-IP-ADDRESS:8080 and test do you see default Tomcat page – if you see it – a job is done successfully.
# If you want to have Tomcat on http port (80) easyest way if to make
# port forward on firewalld level with next commands
firewall-cmd --add-forward-port=port=80:proto=tcp:toport=8080 --permanent
firewall-cmd --reload
# If you want you can test install of simple web application with sample from
# Apache Tomcat website. When you run this commands go with your browser to
# http://tomcaturl/sample to test sample app (see screenshot bellow)
cd /opt/tomcat/webapps/
curl -O https://tomcat.apache.org/tomcat-9.0-doc/appdev/sample/sample.war
