<datasource jndi-name="java:jboss/datasources/KeycloakDS" pool-name="KeycloakDS" enabled="true" use-java-context="true">
    <connection-url>jdbc:mysql://blah.cleardb.net/blah?user=blah&password=blah</connection-url>
    <driver>mysql</driver>
    <pool>
        <min-pool-size>1</min-pool-size>
        <max-pool-size>10</max-pool-size>
    </pool>
    <timeout>
        <idle-timeout-minutes>1</idle-timeout-minutes>
    </timeout>
    <validation>
        <validate-on-match>true</validate-on-match>
        <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLValidConnectionChecker"/>
        <exception-sorter  class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLExceptionSorter"/>
    </validation>
</datasource>