Spring Cloud Skipper uses a relational database to store metadata. We use flyway to bootstrap and then migrate the database as the product evolves. We currently provide schemas for the following databases: H2, HSQLDB, MySQL, PostgreSQL, Microsoft SQL Server, Oracle 12, IBM DB2.

The JDBC drivers for MySQL (via MariaDB driver), HSQLDB, PostgreSQL, SQL Server, along the embedded H2 database are bundled with the server jar. If you are using any other database, then the corresponding JDBC driver jar needs to be on the classpath of the server. If not specified the server will start with the embedded in memory H2 database.

The database properties can be passed as environment variables or command-line arguments to the Server.

	Note
	Please make sure that you configure the correct flyway.schemas for DB2 and SQL Server, otherwise flyway will try to create it’s schema_version table on the default schema for a connection, which could be different than that your credentials are associated with. Please refer to the Flyway documentation for more options.

Here are some examples.

export spring_datasource_url=jdbc:postgresql://localhost:5432/mydb
export spring_datasource_username=myuser
export spring_datasource_password=mypass
export spring_datasource_driver-class-name="org.postgresql.Driver"

java -jar spring-cloud-skipper-server-{project-version}.jar \
    --spring.datasource.url=jdbc:mysql:<db-info> \
    --spring.datasource.username=<user> \
    --spring.datasource.password=<password> \
    --spring.datasource.driver-class-name=org.mariadb.jdbc.Driver &

java -jar spring-cloud-skipper-server-{project-version}.jar \
    --spring.datasource.url=jdbc:postgresql:<db-info> \
    --spring.datasource.username=<user> \
    --spring.datasource.password=<password> \
    --spring.datasource.driver-class-name=org.postgresql.Driver &

java -jar spring-cloud-skipper-server-{project-version}.jar \
    --spring.datasource.url=jdbc:hsqldb:mem:<db-info> \
    --spring.datasource.username=sa \
    --spring.datasource.password= \
    --spring.datasource.driver-class-name=org.hsqldb.jdbc.JDBCDriver &

java -jar spring-cloud-skipper-server-{project-version}.jar \
    --spring.datasource.url=jdbc:sqlserver://<db-info>;database=<database-name> \
    --spring.datasource.username=<user> \
    --spring.datasource.password=<password> \
    --flyway.schemas=<database-name> \
    --spring.datasource.driver-class-name=com.microsoft.sqlserver.jdbc.SQLServerDriver &

java -jar spring-cloud-skipper-server-{project-version}.jar \
    --spring.datasource.url=jdbc:oracle:thin:<user>/<password>@<db-address>/<service-id> \
    --spring.datasource.username=<user> \
    --spring.datasource.password=<password> \
    --spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver &

java -jar spring-cloud-skipper-server-{project-version}.jar \
    --spring.datasource.url=jdbc:db2:thin://<db-info>/<db-name> \
    --spring.datasource.username=<user> \
    --spring.datasource.password=<password> \
    --flyway.schemas=<db-name> \
    --spring.datasource.driver-class-name=com.ibm.db2.jcc.DB2Driver &