For security reasons, phpMyAdmin is accessible only when using 127.0.0.1 as the hostname. To access it from a remote system, you must create an SSH tunnel that routes requests to the Apache Web server from 127.0.0.1. This implies that you must be able to connect to your server over SSH in order to access these applications remotely.
The steps below suggest using port 8888 for the SSH tunnel. If this port is already in use by another application on your local machine, replace it with any other port number greater than 1024 and modify the steps below accordingly. Similarly, if you have enabled Varnish, your stack's Apache Web server might be running on port 81. In this case, modify the steps below to use port 81 instead of port 80 for the tunnel endpoint.
To access the application using your Web browser, create an SSH tunnel, as described below.
Open a new terminal window on your local system (for example, using "Finder -> Applications -> Utilities -> Terminal" in Mac OS X or the Dash in Ubuntu).
Make sure you can log in to the server console following the instructions in the FAQ. Once you have confirmed you are able to log in successfully, log back out.
Run the following command to configure the SSH tunnel. Remember to replace SERVER-IP with the public IP address or hostname of your server. Enter your SSH password when prompted.
ssh -N -L 8888:127.0.0.1:80 bitnami@SERVER-IP
If you are using a private key to connect to the server, use the following command instead, remembering to replace KEYFILE with the path to your private key and SERVER-IP with the public IP address or hostname of your server:
ssh -N -L 8888:127.0.0.1:80 -i KEYFILE bitnami@SERVER-IP
NOTE: If successful, the above commands will create an SSH tunnel but will not display any output on the server console.
While the tunnel is active, you should be able to access the phpMyAdmin console through the secure SSH tunnel you created, by browsing to http://127.0.0.1:8888/phpmyadmin.
To log in, use username root for MySQL and the application password from the detail page for your cloud server.
I hope this information is useful for you. If you have any other question, please do not hesitate to let us know.
Carlos R. Hernández