gregmoy / list-lambdas

Enumerate Lambda functions across all regions with useful metadata 💡💵⚙

List Lambdas functions

(Based on photo by Valve Software / CC BY-SA 4.0)

Motivation

• Read our blog post, "The curse of dead Lambda functions": https://medium.com/epsagon/the-curse-of-dead-lambda-functions-228bf812c10a
• Enumerate list of Lambda functions from every region.
• Detect "dead" or unused Lambda functions.

Setup

git clone https://github.com/epsagon/list-lambdas
cd list-lambdas/
pip install -r requirements.txt
python list_lambdas.py

Docker

git clone https://github.com/epsagon/list-lambdas
cd list-lambdas/
docker build -t list_lambdas:latest .
docker run --rm -v $HOME/.aws:/root/.aws -t list_lambdas:latest --profile myprofile

Example Outputs

CLI:

CSV file:

Usage

Filter only Lambda functions that have not been active in the last 10 days:

python list_lambdas.py --inactive-days-filter 10

Print extended information to the screen (same as in the CSV file):

python list_lambdas.py --all

Sort by a chosen column (e.g. by last invocation time):

python list_lambdas.py --sort-by last-invocation

Output table (with extra data) to a CSV file:

python list_lambdas.py --csv lambdas.csv

Provide credentials:

python list_lambdas.py --token-key-id <access_key_id> --token-secret <secret_access_key>