Tutorial: How to Install GraphHopper on Fedora CoreOS Latest

In this tutorial, we will guide you through the steps to install GraphHopper on the latest version of Fedora CoreOS. GraphHopper is a routing engine for routing vehicles, bikes, and footpaths. It is an open-source solution for routing software applications.

Prerequisites

Before we proceed with the installation, you should have the following prerequisites:

  • A virtual or physical machine with the latest version of Fedora CoreOS installed.
  • A user account with SSH access and root privileges.

Step 1: Install Java

GraphHopper requires Java 8 or higher to run. To install Java on the system, follow the steps below:

  1. Open a terminal on your Fedora machine.

  2. Run the following command to install OpenJDK: 

    $ sudo dnf install java

  3. Verify the Java installation by running the following command: 

    $ java -version

    This should output the version of Java installed on the system.

Step 2: Download GraphHopper

Now, we will download the GraphHopper package from the official website. Follow these steps:

  1. Open a terminal on your Fedora machine.

  2. Run the following command to download the latest version of GraphHopper: 

    $ wget https://graphhopper.com/public/releases/graphhopper-web-3.x.x.zip

    Replace 3.x.x with the latest version available.

  3. Extract the downloaded package to a new directory: 

    $ unzip graphhopper-web-3.x.x.zip -d graphhopper

    Replace 3.x.x with the latest version available.

Step 3: Customize GraphHopper

GraphHopper has some configuration files that can be customized according to the user's preferences. We will explain how to configure a few of them.

  1. Open a terminal on your Fedora machine and navigate to the GraphHopper directory: 

    $ cd graphhopper

  2. Edit the config.yml file to specify the routing profiles you want to use: 

    $ nano config.yml

    In this file, you can specify which routing profiles you want to enable. For example, to enable the car, bike, and foot profiles, add the following lines: 

    graphhopper:
   profiles: car,bike,foot

  3. Edit the graphhopper.sh file to specify the memory that can be used by GraphHopper: 

    $ nano graphhopper.sh

    In this file, you can specify the memory limits for GraphHopper. For example, to limit GraphHopper to use a maximum of 2GB, add the following line: 

    JAVA_OPTS="-server -Xconcurrentio -Xmx2g -Djava.awt.headless=true"

Step 4: Start GraphHopper

After configuring the GraphHopper, we can start the service by running the following command: 

$ ./graphhopper.sh start

This will start the GraphHopper service on your Fedora machine. You can access it by navigating to http://localhost:8989 in your web browser.

Conclusion

In this tutorial, we have shown you how to install GraphHopper on the latest version of Fedora CoreOS. We have also explained how to customize the configuration files of GraphHopper to your preference. Now, you can start using GraphHopper to provide routing solutions for your software applications.