Amazon Linux 2 Tomcat Setup

Setting up an Amazon Linux 2 server for PilotFish can be tricky without prior knowledge.

Below are some general steps to get a Tomcat set up to host PilotFish war files.

Install OpenJDK 11:

• sudo amazon-linux-extras install java-openjdk11

Installing and Running Tomcat 8.5:

• sudo amazon-linux-extras install tomcat8.5
• sudo systemctl start|stop|restart tomcat
• webapps dir /var/lib/tomcat/webapps/
  • drop your PilotFish war files here

Set Environment Settings:

• /usr/lib/systemd/system/tomcat.service
  • Adding {Environment=”CATALINA_OPTS=-Xms512M -Xmx1024M”} without the brackets will allow you to set normal java params for memory and etc.
  • Additionally, you can add custom variables as System Environment Variables in this manner. This is usually done if credentials are to be stored outside of the EIP Interfaces.
  • Edits to this will likely require a “sudo systemctl daemon-reload” to be run

General Troubleshooting:

• If you see “Failed to execute operation: The name org.freedesktop.PolicyKit1 was not provided by any .service files”, you probably didn’t run the command with sudo.