Elektra: Use Case: Setup instance

Elektra 0.8.24

Use Case: Setup instance

## Summary

- Title: Setup instance
- Scope: Setup
- Level: User Goal
- Actors: User (usually a sysadmin)
- Brief: User sets up a daemon on the instance and connects it to elektra-web.

## Scenarios

- Main success scenario: User successfully sets up elektrad on the instance and connects it to elektra-web.
- Alternative scenario: Authentication issues when connecting the services, e.g. wrong API key.
- Alternative scenario: The instance is already connected to elektra-web. A message informs the user about this.
- Error scenario: Technical problems - the user is informed about the problem.
- Postcondition: User can now access the instance via the client.
- Non-functional Constraints:
  - Security mechanism