How to install Mejiro on Fedora CoreOS

In this tutorial, we will go through the process of installing Mejiro from its source code on Fedora CoreOS. Mejiro is a web-based front-end for managing PostgreSQL databases.

Prerequisites

Before we start, make sure you have the following prerequisites:

• A running instance of Fedora CoreOS
• A user account with administrator privileges
• A working internet connection

Step 1: Install Dependencies

Before we can install Mejiro, we need to install its dependencies. One of the dependencies is the go programming language. To install go, run the following command as a sudoer:

sudo dnf install golang

Once go is installed, we will also need to install the postgresql server and its development package:

sudo dnf install postgresql postgresql-devel

Step 2: Clone Mejiro Repository

Now that we have the dependencies installed, let's clone the Mejiro repository. Navigate to a directory where you want to keep the Mejiro source code and clone the repository:

git clone https://github.com/dmpop/mejiro.git

Once cloned, navigate to the Mejiro directory:

cd mejiro

Step 3: Build and Install Mejiro

To build and install Mejiro, run the following command:

sudo make install

The above command will download and install all the necessary dependencies, build Mejiro, and install it on the system.

Step 4: Configure Mejiro

Before we can use Mejiro, we need to configure it. Create a configuration file named config.yaml in the Mejiro directory:

nano config.yaml

Add the following configuration to the config.yaml file:

listen: ":8080"
username: "postgres"
password: "password"
database: "postgres"
sslmode: "disable"

Replace password with the actual password that you set for the postgres user during the installation of the PostgreSQL server.

Step 5: Run Mejiro

Finally, we can start Mejiro by running the following command:

sudo mejiro -c config.yaml

If everything was successful, you will see output similar to the following:

2022/01/01 20:48:12 Starting Mejiro...
2022/01/01 20:48:12 Listening on: :8080

You can now access Mejiro by visiting http://<your-fcos-instance-ip-address>:8080 in your web browser.

Conclusion

In this tutorial, we went through the process of installing Mejiro on Fedora CoreOS. Mejiro makes managing PostgreSQL databases a lot easier by providing a web-based front-end.

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