# Serverless Prune Plugin Following deployment, the Serverless Framework does not purge previous versions of functions from AWS, so the number of deployed versions can grow out of hand rather quickly. This plugin allows pruning of all but the most recent version(s) of managed functions from AWS. This plugin is compatible with Serverless 1.x and higher. [](http://www.serverless.com) [](https://coveralls.io/github/claygregory/serverless-prune-plugin?branch=master) ## Installation Install with **npm**: ```sh npm install --save-dev serverless-prune-plugin ``` And then add the plugin to your `serverless.yml` file: ```yaml plugins: - serverless-prune-plugin ``` Alternatively, install with the Serverless **plugin command** (Serverless Framework 1.22 or higher): ```sh sls plugin install -n serverless-prune-plugin ``` ## Usage In the project root, run: ```sh sls prune -n ``` This will delete all but the `n`-most recent versions of each function deployed. Versions referenced by an alias are automatically preserved. ### Single Function A single function can be targeted for cleanup: ```sh sls prune -n -f helloWorld ``` ### Region/Stage The previous usage examples prune the default stage in the default region. Use `--stage` and `--region` to specify: ```sh sls prune -n --stage production --region eu-central-1 ``` ### Automatic Pruning This plugin can also be configured to run automatically, following a deployment. Configuration of automatic pruning is within the `custom` property of `serverless.yml`. For example: ```yaml custom: prune: automatic: true number: 3 ``` To run automatically, the `automatic` property of `prune` must be set to `true` and the `number` of versions to keep must be specified. It is possible to set `number` to `0`. In this case, the plugin will delete all the function versions (except $LATEST); this is useful when disabling function versioning for an already-deployed stack. ### Layers This plugin can also prune Lambda Layers in the same manner that it prunes functions. You can specify a Lambda Layer, or add the flag, `includeLayers`: ```yaml custom: prune: automatic: true includeLayers: true number: 3 ``` ### Dry Run A dry-run will preview the deletion candidates, without actually performing the pruning operations: ```sh sls prune -n --dryRun ``` ### Additional Help See: ```sh sls prune --help ``` ## Permissions Required To run this plugin, the user will need to be allowed the following permissions in AWS: - `lambda:listAliases` - `lambda:listVersionsByFunction` - `lambda:deleteFunction` - `lambda:listLayerVersions` - `lambda:deleteLayerVersion` ## Common Questions **How do I set up different pruning configurations per region/stage?** Several suggestions are available in [this thread](https://github.com/claygregory/serverless-prune-plugin/issues/21#issuecomment-622651886). **Can I just disable versioning entirely?** Absolutely. While Serverless Framework has it enabled by default, [versioning can be disabled](https://www.serverless.com/framework/docs/providers/aws/guide/functions/#versioning-deployed-functions). ## License Copyright (c) 2017 [Clay Gregory](https://claygregory.com). See the included [LICENSE](LICENSE.md) for rights and limitations under the terms of the MIT license.