AWS - Deploy Function

The sls deploy function command deploys an individual function without AWS CloudFormation. This command simply swaps out the zip file that your CloudFormation stack is pointing toward. This is a much faster way of deploying changes in code.

serverless deploy function -f functionName

Note: This command now deploys both function configuration and code by default. Just as before, this puts your function in an inconsistent state that is out of sync with your CloudFormation stack. Use this for faster development cycles and not production deployments. A later serverless deploy does not undo a configuration change made this way: CloudFormation changes only what differs from the template it deployed last, and when nothing else changed, the deploy is skipped. To put the function back, run serverless deploy function again from the configuration you want. With codeStorageMode: reference, this command updates the function using Lambda-managed storage; the next serverless deploy restores reference mode.

Options

• --function or -f The name of the function which should be deployed
• --stage or -s The stage in your service that you want to deploy to.
• --region or -r The region in that stage that you want to deploy to.
• --aws-profile The AWS profile you want to use.
• --update-config or -u Pushes ONLY Lambda-level configuration changes e.g. handler, timeout or memorySize

Examples

Deployment without stage and region options

serverless deploy function --function helloWorld

Deployment with stage and region options

serverless deploy function --function helloWorld \
  --stage dev \
  --region us-east-1

Deploy only configuration changes

serverless deploy function --function helloWorld --update-config