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Tomcat_Config.txt
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---------------------------------------CONFIGURING TOMCAT-----------------------------------------
1). sudo apt-get install default-jdk // Installing jdk
2). we will create a tomcat user and group, which will be used to run the Tomcat service
sudo groupadd tomcat
sudo useradd -s /bin/false -d /opt/tomcat -g tomcat tomcat
3). cd /tmp
4). curl -O http://apache.mirrors.ionfish.org/tomcat/tomcat-8/v8.5.13/bin/apache-tomcat-8.5.13.tar.gz. // Downloading tomcat
5). sudo mkdir /opt/tomcat
7). sudo chgrp -R tomcat /opt/tomcat //Changing ownership from root to non root user
sudo tar xzvf apache-tomcat-8*tar.gz -C /opt/tomcat --strip-components=1
8). sudo chmod g+r /opt/tomcat/conf
9). sudo chmod g+x /opt/tomcat/conf // giving tomcat group read and execute permission
10). sudo chown -R tomcat webapps/ work/ temp/ logs/
11). Creating systemd service file--
a). sudo update-java-alternatives -l // for checking java location
b). sudo vim /etc/systemd/system/tomcat.service -- >
[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
12). sudo systemctl daemon-reload // reload the systemd daemon so that it knows about our service file.
13). sudo systemctl start tomcat
14). sudo systemctl status tomcat
15). sudo ufw allow 8080
16). Add a custom tcp rule in aws instance to allow 8080 port
17). In browser -> YOUR_SERVER_IP:8080
Note - To redirect requests from nginx to tomcat
vim /opt/tomcat/webapps/ROOT/index.html
<html>
<head>
<meta http-equiv="refresh" content="0; URL=http://admin.hoppapp.com">
</head>
<body>
</body>
</html>
NOTE - If it does not work give permission to tomcat user to the whole directory
18). Deploy war file
19) intsall mongo
20) . ****** DO ALL THINGS WITH TOMCAT USER ONLY **********