message: infra: update discord-mods-bot documentation
diff: # Discord moderation bot
  -* Source code: [rust-lang-nursery/discord-mods-bot][repo]
  -* Hosted on: [`bots.infra.rust-lang.org`][rust-bots] (behind the bastion -- [how to connect][bastion-connect])
  +* Source code: [rust-lang/discord-mods-bot][repo]
  +* Hosted on: [`rust-ecs-prod` ECS cluster][ecs]
  * Maintainers: [technetos]
  -## Service configuration
  +The bot is hosted on the `rust-ecs-prod` ECS cluster, on the project's AWS
  +account, with the `discord-mods-bot` service name. Its container image is
  +stored in a ECR repository with the same name, and its data is stored in the
  +`shared` RDS PostgreSQL instance.
  -The service uses a PostgreSQL database called `discord_mods_bot` hosted on the
  -same server, and connects to it with the `discord_mods_bot` user. Backups are
  -not yet setup for the database contents.
  +Automatic deploys are setup from the [rust-lang/discord-mods-bot][repo] GitHub
  +repository.
  -The service is run with docker-compose on the home of the `ec2-user` user, and
  -its docker image is hosted on ECR. The image is automatically rebuilt by the
  -git repository's CI every time a new commit is pushed to master.
  -
  -The server doesn't expose anything to the outside, as it uses websockets to
  -communicate with Discord.
  -
  -The bot is [`rustbot#4299`][devportal]. [pietroalbini], [Mark-Simulacrum],
  -[alexcrichton] and [aidanhs] have access to the developer portal.
  +The Discord bot account is [`rustbot#4299`][devportal]. [pietroalbini],
  +[Mark-Simulacrum], [alexcrichton] and [aidanhs] have access to the developer
  +portal.
  ## Common maintenance procedures
  -### Deploying changes to the bot
  -
  -Once the CI build on the `master` branch of [the repo][repo] ends you can SSH
  -into the server and run this command:
  -
  -```
  -./redeploy
  -```
  -
  -The command might also redeploy other services hosted on the same server.
  +[Instructions on how to manage ECS services are available here.][ecs]
  -[repo]: https://github.com/rust-lang-nursery/discord-mods-bot
  -[rust-bots]: https://github.com/rust-lang/infra-team/blob/master/docs/hosts/rust-bots.md
  -[bastion-connect]: https://github.com/rust-lang/infra-team/blob/master/docs/hosts/bastion.md#logging-into-servers-through-the-bastion
  +[repo]: https://github.com/rust-lang/discord-mods-bot
  +[ecs]: ecs-services.md
  [devportal]: https://discordapp.com/developers/applications/615806512790503424
  [technetos]: https://github.com/technetos
  [pietroalbini]: https://github.com/pietroalbini
  