Arvados

The following commands (copied from #18337) should result in a production-mode single host Arvados cluster:

# add-apt-repository ...
# apt-get install arvados-server-easy
# arvados-server init [some options]
[answer some questions]
OK, you can now log in to https://workbench2.example.com/
# arvados-server health
OK

For now, the intent is not to accommodate all/most real-life situations. There will be many restrictions/requirements/assumptions about the situations where this initial version will work out of the box. For example, we can assume

• It's acceptable for TLS certificates to be signed by a local root CA generated by Arvados
• The operator has a DNS entry configured to send all traffic to the host
• All TCP ports on the host are open and reachable from browsers/clients
• The operator wants Arvados to create its own user and database using a PostgreSQL server that is already installed and running on the host
• The /etc/arvados directory does not exist
• The operator has chosen a unique 5-character cluster ID
• Keep blocks will be stored in a directory on the install host's filesystem (or an existing S3 bucket with credentials available via IAM role)
• The host has enough memory, disk space, CPU power, etc. to support the expected workload