Bundle uninstall via relayctl

[kevsmith]

This is an obsolete design. See comments below for more recent info.

Trigger uninstalling a bundle from Cog and all Relays.

Examples:

cogctl bundle rm --bundle=BFC92057-B4AB-43B0-9E4C-D044AEDDCD78

[christophermaier]

Did we decide to manage this via scripts and manual coordination for initial launch, rather than managing the coordination centrally from the bot?

[kevsmith]

Yes. For launch we should have a bundle uninstall workflow like so:

cogctl bundle deactivate <bundle_name>
On each Relay host: relayctl bundle remove <bundle_name>
cogctl bundle remove <bundle_name>

tl;dr we need a basic relayctl command which:

• Communicates with Relay via Distributed Erlang. Relay should only ever use the relay@127.0.0.1 node name to prevent unauthorized access over the network. This means relayctl will only work when executed directly on the Relay host which is fine for launch.
• Supports two commands:
  • relayctl bundle list to list all installed bundles on a given Relay
  • relayctl bundle remove <bundle_name> to uninstall a bundle. Successful removal should trigger a new snapshot announcement to sync Cog with the Relay's updated available bundle list.

[christophermaier]

Done!

[christophermaier]

Completed with operable/relay#12