Arvados

Establish a convention for health check scripts such as "keep-web-health-check.sh" which check cluster functionality for a particular service.

Should only require ARVADOS_API_HOST and ARVADOS_API_TOKEN, should self-configure based on discovery document (if necessary).

Use Nagios-compatible convention for health reporting:

https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/3/en/pluginapi.html

To be described in the spec:

• directory layout in the arvados tree
• naming convention for directory layout and scripts