Serverless cron jobs written in python and scheduled as AWS Lambdas.
We used to implement maintenance jobs like RDS snapshots and starting/stopping instances outside of business hours as CI server builds. This always seemed hacky. When scheduled Lambdas were released, we got to work re-implementing these scripts. Unfortunately, scheduled Lambdas have a steep learning curve. You have to understand IAM roles, CloudWatch Events, and how to deploy and update Lambda function code.
Lambder simplifies the creation and deployment of these scheduled jobs.
If you don't use pipsi
, you're missing out.
Here are installation instructions.
Simply run:
$ pipsi install lambder
To create a new Lambda Function project, specify a name and an S3 bucket to store the code zipfile.
lambder functions new --name foo --bucket mys3bucket
cd lambder-foo
lambder functions deploy
lambder functions list
lambder functions invoke
Get help
lambder --help
Schedule an existing AWS Lambda
lambder events add \
--name EbsBackups \
--function-name Lambder-ebs-backup \
--cron 'cron(0 6 ? * * *)'
Remove an event (a scheduled Lambda)
lambder events rm --name EbsBackups
Disable an event
lambder events disable --name EbsBackups
Re-enable a disabled event
lambder events enable --name EbsBackups
Load events from a json file
lambder events load --file example_events.json
List all events created by lambder
lambder events list
Create a new AWS Lambda project. Specify a name and an S3 bucket to store the Lambda function code. Optionally specify function configuration like timeout, memory size, and description.
lambder functions new \
--name ebs-backups \
--bucket my-s3-bucket \
--timeout 30 \
--memory 128 \
--description "ebs backup function"
Deploy the Lambda function (from within the project directory)
lambder functions deploy
Invoke the Lambda in AWS (from within the project directory)
lambder functions invoke
Invoke the function with input (from within the project directory)
lambder functions invoke --input input/ping.json
List all functions
lambder functions list
Delete a function (from within the project directory)
lambder functions rm
- https://github.com/LeafSoftware/lambder-create-images
- https://github.com/LeafSoftware/lambder-start-instances
- https://github.com/LeafSoftware/lambder-stop-instances
- https://github.com/LeafSoftware/lambder-create-snapshots
- https://github.com/LeafSoftware/lambder-create-rds-snapshots
- add code to add site packages from virtualenvwrapper to zip
- add lambda name autodetection to 'lambder events add'
- add pagination where needed (lambda:list-functions)