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Highly trained cats for managing servers.

Project description


Highly trained cats for managing servers.

Dedicated server support agent.

What is CatOps?

CatOps is a very simple NoOps framework for deploying your own ChatOps bot.

Commands you wish to add to your CatOps implementation are added to a plugins folder in the same directory, and will then be automatically imported and callable using the function name.

Why CatOps?

  • NoOps.

    • Deploy, rewrite, and redeploy FaaS easily with no worrying about setting up and managing servers.
    • Only charged when CatOps is called.
  • Codify common maintenance procedures.

    • Perform high level actions without intimate low level knowledge.
    • Prevent errors doing complicated but routine tasks.
  • Unify documentation.

    • CatOps can act as a unified go-to location for help, merging/pooling all documentation into one place.
  • Transparency.

    • Team members can see all actions taken by others in solving a problem. Organic learning.
    • No 'go-to' person for certain maintenance tasks.
    • Everyone aware of server changes. No-one surprised that the server is down if they see /meow restart server in the chat.
    • Spread knowledge; everyone becomes equally capable of solving problems.
    • Out of date help messages or documentation is more obvious to everyone.
  • Context-aware suggestions, suggest actions and display help depending on context.

    • Docs/procedures/etc are useful, but can be too much to read through, hard to find, not up to date.
    • Reduce clutter when trying to figure out next actions.
  • Reduce context switching.

    • No need for bash, Linux, ssh or VPN to fix most server issues.
    • No checking server logs.
    • Easily accesible and readble output.
  • Control access.

    • Only gives necessary access, no unnecessary ssh-ing into production!


  • Completely NoOps.
  • Easily extensible.
  • Pay per invocation.
  • Provider agnostic.


Python handler

from catops import dispatch
import json

def endpoint(event, context):
    # event = {'command':['meow', 'hi']} # example event passed to lambda
    params = event['command']
        s = dispatch(params)
    except Exception as err:
        s = str(err)
    response = {
        "statusCode": 200,
        "body": json.dumps(s)
    return response

Example plugin

""" - example plugin for ChatOps."""

def hi(*args):
    return "Meow!"

Serverless configuration

service: CatOps

    - plugins/**

    slim: true

name: aws
runtime: python3.6
profile: serverless

    handler: handler.endpoint
      - http:
          path: ping
          method: get

  - serverless-python-requirements

Deploy and Test

serverless deploy
serverless invoke --function dispatcher --path /path/to/json/data --log

See examples for more.


sudo apt-get install npm
sudo npm install -g serverless
npm install serverless-python-requirements
pip install catops

Install serverless-python-requirements in the same dir as serverless.yml.


  • Passive rather than active; needs to be triggered (e.g. by Slack slash commands)
  • Limitations of FaaS
    • Max size (256MB for AWS Lambda)
    • Execution time limit (5 minute for AWS Lambda)
    • No state (recommend using a cloud-based database for state e.g. DynamoDB for AWS)

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