private static List<LogctlSpec> defaultLogctlSpecs() {
        // Turn off info logging for all containers for some classes (unimportant log messages that create noise in vespa log)
        return List.of(new LogctlSpec("com.yahoo.vespa.spifly.repackaged.spifly.BaseActivator", getLevelModSpec("-info")),
                       new LogctlSpec("org.eclipse.jetty.server.Server", getLevelModSpec("-info")),
                       new LogctlSpec("org.eclipse.jetty.server.handler.ContextHandler", getLevelModSpec("-info")),
                       new LogctlSpec("org.eclipse.jetty.server.handler.ErrorHandler", getLevelModSpec("-info -warning")),
                       new LogctlSpec("org.eclipse.jetty.server.AbstractConnector", getLevelModSpec("-info")));
    }
Adds services to all hosts in the system.
config-model/src/main/java/com/yahoo/vespa/model/admin/Admin.java