@teamgantt/eb-blue-green
v1.0.0
Published
Utilities for blue green deployments
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eb-blue-green
Utilities for handling blue green deployments in elastic beanstalk environments.
Configuration
You will want some environment variables set for local use:
export AWS_PROFILE=teamgantt
export AWS_REGION=us-east-2
export NODE_ENV=development
If running in an AWS environment, you don't really need to worry about anything.
Local use assumes it will be reading profile information from ~/.aws/credentials
based off the AWS_PROFILE
environment variable and the AWS_REGION
environment variable.
There is .envrc
in the repo if you are into using direnv. Just update the values with your own profile/region.
Usage
These are mostly functions that sit on top of the aws sdk for JavaScript.
Since beanstalk environment names have to be unique for a region within an account, most of these functions operate from that starting point.
The main functions of interest are cloneEnvironment
, swapUrls
, and terminateEnvironment
.
const eb = require('@teamgantt/eb-blue-green');
(async function() {
// clone the blue environment to a new env called "green"
await eb.cloneEnvironment('blue', 'green');
// swap the blue and green cnames - i.e direct traffic to green
const from = 'blue';
const to = 'green';
await eb.swapUrls(from, to);
// when you are done deploying and testing blue, swap things back and clean up
await eb.swapUrls(to, from);
await eb.terminateEnvironment('green');
})();