swarmy is a command-line tool (Terminal UI) that allows you to manage Docker swarm services and containers easily.

Installation

Homebrew

brew install alexcastrodev/swarmy/swarmy

Script

curl -sSL https://raw.githubusercontent.com/alexcastrodev/swarmy/main/install.sh | bash

Usage

swarmy

• Show all service
• You see the services with their name, replicas, image, and ports.
• You can enter the service name to see more details about it.
• You can see why a service is not running in details.
• You can also filter the services by name using the --filter option.

Remote servers

swarmy can manage a Docker Swarm running on a remote machine over SSH, without needing any SSH client of its own — it just points the docker CLI at ssh://user@host and lets your system's SSH handle the connection.

One-off usage

swarmy --host 10.0.0.5 --user deploy
swarmy --host staging.example.com --user root --port 2222

Saved servers

List named servers in ~/.config/swarmy/servers.yml:

servers:
  - name: prod-eu
    host: 10.0.0.5
    user: deploy
  - name: staging
    host: staging.example.com
    user: root
    port: 2222

Then either pick one from the welcome screen's "Select server" menu, or jump straight to it:

swarmy --server prod-eu

List your saved servers at any time:

swarmy servers

Or save a one-off --host connection as a named server instead of editing the YAML by hand:

swarmy --host 10.0.0.5 --user deploy --save prod-eu
swarmy --host 10.0.0.5 --save            # name defaults to the host

Authentication

• SSH key: load it into your ssh-agent before running swarmy (ssh-add ~/.ssh/id_ed25519) — any key in the agent is used automatically.
• Password auth is not supported. Docker's ssh:// transport streams its protocol over stdin/stdout from the first packet, so there is no channel left for an interactive password prompt — this is a limitation of the Docker CLI itself, not swarmy. Set up key-based auth on the remote host instead (e.g. ssh-copy-id user@host).

Update

Reinstall the latest version by re-running the install script:

swarmy update

Release

$ make install

Debug

$ make run

API docs

Generate browsable API docs (RubyDoc-style) from the source comments:

$ make docs

This writes static HTML to docs/ (gitignored) — open docs/index.html.

Technologies

• Crystal language