Beluga 是一個命令行工具，用來將 Docker 容器發布到單個服務器以及數量不多的服務器群組。

為什么不用 Kubernetes 或者 Mesos?

• 當前 Docker 不支持多租戶環境

• 所以不管是 Kubernetes 還是 Mesos 都無法操作 Docker/容器層

• 很多實際的問題：

• #2918 (PR: #4572) (container root is identical to host root -- volumes can be written and read from as host root inside container).

• (WIP) Docker doesn't have any ACL. Writing to docker.sock == root.

• #5619 (PR: #6000) (absolute symlinks and symlink path components copy host target).

Beluga 不能做什么

• Down-to-distro cluster managements

• Docker registry or app management itself

• Magic service discovery

• Infrastructure management ### How is it working?

  • Run dockerfiles to build them

  • Push them to repository

  • Pull them when connected to server by ssh

  • That's it!

需求

• A Unix compatible system with RSync

• SSH

• Docker Compose

• Obviously, Docker..

• Some love.