bulk purge AWS CloudFromation stacks

1-README.md

Simple Stack Purge

Install

npm i

Run

Just keep running... things will fail depending on your dependancy graph

AWS_PROFILE=nbos AWS_REGION=us-west-2 node .

Tricky Things

• non-empty S3 buckets (easy to delete via Console or Python)

purge-stacks.js

const AWS = require('aws-sdk')

const cloudformation = new AWS.CloudFormation();

const StackNameFilter = /^ris-[^-]+-[1-9]([0-9])*-.*$/
const StackStatusFilter = [
    "CREATE_IN_PROGRESS",
    "CREATE_FAILED",
    "CREATE_COMPLETE",
    "ROLLBACK_IN_PROGRESS",
    "ROLLBACK_FAILED",
    "ROLLBACK_COMPLETE",
    // "DELETE_IN_PROGRESS",
    "DELETE_FAILED",
    // "DELETE_COMPLETE",
    "UPDATE_IN_PROGRESS",
    "UPDATE_COMPLETE_CLEANUP_IN_PROGRESS",
    "UPDATE_COMPLETE",
    "UPDATE_ROLLBACK_IN_PROGRESS",
    "UPDATE_ROLLBACK_FAILED",
    "UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS",
    "UPDATE_ROLLBACK_COMPLETE",
    "REVIEW_IN_PROGRESS",
    "IMPORT_IN_PROGRESS",
    "IMPORT_COMPLETE",
    "IMPORT_ROLLBACK_IN_PROGRESS",
    "IMPORT_ROLLBACK_FAILED",
    "IMPORT_ROLLBACK_COMPLETE",
]

async function purge () {

    let stacks = []

    // list stacks
    let NextToken = undefined
    while (true) {
        console.log("discovering stacks ...", { count: stacks.length })
        const result = await cloudformation.listStacks({ NextToken, StackStatusFilter }).promise()
        const names = result.StackSummaries.map( s => s.StackName )
        stacks.push(...names)
        if ( !result.NextToken ) break
        NextToken = result.NextToken
    }

    console.log("discovered stacks", { count: stacks.length, stacks })
    
    // filter
    stacks = stacks.filter( name => name.match(StackNameFilter) )
    console.log("filtered stacks", { count: stacks.length, stacks })

    // delete
    const results = stacks.map( StackName => {
        return cloudformation.deleteStack({ StackName }).promise()
            .then( _ => console.log("deleting", { StackName }) )
    })

    await Promise.all( results )

}

async function main () {
    await purge()
}

main().then(
    console.log,
    console.error,
)