文件列表:

LICENSE (11357, 2021-09-26)
app.py (4311, 2021-09-26)
requirements.txt (192, 2021-09-26)
sample_config.yaml (487, 2021-09-26)
scripts (0, 2021-09-26)
scripts\__init__.py (0, 2021-09-26)
scripts\whatsup.py (333, 2021-09-26)
setup.py (293, 2021-09-26)

# Whatsup -- A frugal serverless up/down monitor ## Purpose This is a simple serverless up/down monitor that runs every 5 minutes and sends you an alert in Slack if your website is down (or goes from down->up). I wanted to see if I could use AWS SSM Parameter Store as a free key-value DB. Nothing as brazen as [@QuinnyPig's route53 database](https://twitter.com/QuinnyPig/status/1120653859561459712), but still interesting: * Use AWS Chalice to define a scheduled AWS Lambda job that runs every 5 minutes. * Uses SSM Parameter Store as a database to store the last known status of each endpoint. That's it! ## Prerequisites - You must have an AWS account, and have your default credentials and AWS Region configured as described in the [AWS Tools and SDKs Shared Configuration and Credentials Reference Guide](https://docs.aws.amazon.com/credref/latest/refdocs/creds-config-files.html). - Python 3.7 or later - Boto3 1.14.20 or later - AWS Chalice 1.15.1 or later - Requests 2.23.0 or later - PyTest 5.3.5 or later (to run unit tests) - Access to [AWS SSM Parameter Store](https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-parameter-store.html). ## Cautions - As an AWS best practice, grant this code least privilege, or only the permissions required to perform a task. For more information, see [Grant Least Privilege](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#grant-least-privilege) in the *AWS Identity and Access Management User Guide*. - This is an early version and has not been tested very thoroughly. - Running this code might result in charges to your AWS account. ## Running the code 1. Clone the whatsup repository, initialize a virtual env, and install prerequisite packages. ``` git clone https://github.com/foretheta/whatsup.git cd whatsup python3 -m venv source venv/bin/activate pip install -r requirements ``` 1. Make a copy of the `sample_confg.yaml` file and edit to add the endpoints you want to monitor. Add your Slack webhook for notifications. ``` cp sample_config.yaml config.yaml && vim config.yaml ``` 1. Deploy the app to your AWS account. ``` whatsup deploy ``` ### Example structure The example is divided into the following files: **app.py** Defines the scheduled function to monitor your endpoints.. Uses Chalice to decorate scheduled functions and handle associated actions. Stores data in AWS SSM Parameter Store. **requirements.txt** Defines the minimum package versions to deploy to AWS Lambda. **config.json** Configuration for the application. It has a list of endpoints you want to monitor and provide the Slack webhook that will send a simple up/down notication to the channel associated with the webhook. ## Running the tests (coming soon) The unit tests in this module use the moto AWS Services mocker. This captures requests before they are sent to AWS, and returns a mocked response. ``` python -m pytest ``` ## Additional information - [AWS Chalice Quickstart](https://aws.github.io/chalice/quickstart.html) - [Boto3 AWS Lambda service reference](https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/lambda.html) - [AWS Systems Manager Parameter Store](https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-parameter-store.html) --- Copyright Foretheta, Inc. All Rights Reserved. SPDX-License-Identifier: Apache-2.0

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