Database Setup

The required Artemis schema will be created / updated automatically at startup time of the server application. Artemis supports MySQL and PostgreSQL databases.

MySQL Setup

Download and install the MySQL Community Server (8.0.x).

You have to run a database on your local machine to be able to start Artemis.

We recommend starting the database in a docker container. You can run the MySQL Database Server using e.g. docker compose -f docker/mysql.yml up.

If you run your own MySQL server, make sure to specify the default character-set as utf8mb4 and the default collation as utf8mb4_unicode_ci. You can achieve this e.g. by using a my.cnf file in the location /etc.

[client]
default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
[mysqld]
character-set-client-handshake = TRUE
init-connect='SET NAMES utf8mb4'
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

Make sure the configuration file is used by MySQL when you start the server. You can find more information on https://dev.mysql.com/doc/refman/8.0/en/option-files.html

Users for MySQL

For the development environment, the default MySQL user is ‘root’ with an empty password.

(In case you want to use a different password, make sure to change the value in application-local.yml (spring > datasource > password) and in liquibase.gradle (within the ‘liquibaseCommand’ as argument password)).

Set empty root password for MySQL 8

If you have problems connecting to the MySQL 8 database using an empty root password, you can try the following command to reset the root password to an empty password:

mysql -u root --execute "ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY ''";

Warning

Empty root passwords should only be used in a development environment. The root password for a production environment must never be empty.

PostgreSQL Setup

No special PostgreSQL settings are required. You can either use your package manager’s version, or set it up using a container. An example Docker Compose setup based on the official container image is provided in docker/postgres.yml.

When setting up the Artemis server, the following values need to be added/updated in the server configuration (see setup steps below) to connect to PostgreSQL instead of MySQL:

spring:
    datasource:
        url: jdbc:postgresql://localhost:5432/Artemis?ssl=false
        username: Artemis
    jpa:
        database: POSTGRESQL

Note

This example assumes that you use the mentioned Docker Compose file on your localhost, leading to a database called Artemis that runs on port 5432 and where no password is necessary. You might have to update spring.datasource.url if you use another configuration and set the password in spring.datasource.password.