4.2 Ubuntu Virtual Machine in the Cloud
20210728 The cloud provides quick and cheap access to Ubuntu servers from $5 per month (or less if you shutdown the server when not required). Cloud vendors often provide free credit (from $100 to $200) to get you started. Linux oriented vendors include Linode and Digital Ocean. Azure and Amazon also support Ubuntu.
A new Ubuntu 20.04 LTS server can be set up on any one of the cloud platforms. You will often have a choice of hosting locations from around the world. Typically, you will name the virtual machine and provide a user name for the default user. A password or ssh public key will be required, being sure to open network port 22 for ssh connectivity. Machine sizes to suit your needs can be chosen. A DNS name will usually be created so as to refer to the server by name rather than IP address.
You can then connect to the server using ssh from a terminal to the DNS name.
$ ssh -X myhub.australiacentral.cloudapp.azure.com
Once connected you can set up the server with the initial install instructions in Section 4.1.
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