ServiceMix / Karaf web-console default username and password

Install the karaf-web-console
karaf@root> features:install webconsole

From web-console documentation
... "Accessing the web console"
To access the console for an instance of Karaf running locally, enter the following address in your web browser: http://localhost:8181/system/console
Log in with the username karaf and the password karaf. If you have changed the default user or password, use the one you have configured.

The username and password are smx / smx
see file: $SERVICE_MIX_INSTALL_DIR/etc/users.properties