Is Blue-Green deployment zero downtime?

Instead of waiting until midnight to push the update to the production environment (when the least amount of users are active), you’re using a blue green deployment model to update the app during peak use. And you’re going to do it with zero downtime.

Which k8s resource should be used for blue Green deployments?

Blue/green deployment step for Kubernetes Codefresh offers a blue/green plugin that can be used in place of a standard Kubernetes deployment. The plugin offers the basic blue/green deployment process along with the automatic service switch if the new version works without errors.

What is Blue-Green deployment in Azure?

Blue-Green deployment approach is to achieve zero downtime by having two identical production environments: Blue and Green. Blue is current live app and Green is new identical environment where you will deploy the latest code.

What do you use to implement Blue-Green deployment for an application running on Azure VMs?

If the deployment is a web application running on Azure Web Apps, then you can simply use Visual Studio to execute most of the Blue-Green deployment.

What does staging mean in blue green deployment?

In the case of Blue-Green Deployment, the staging slot represents your “green” deployment. The production slot represents your “blue” deployment. Once you validate that everything has been successfully deployed to the staging slot (i.e. green), the Prod stage performs a swap of green and blue.

When to move Blue deployment to Green deployment?

The production slot represents your “blue” deployment. Once you validate that everything has been successfully deployed to the staging slot (i.e. green), the Prod stage performs a swap of green and blue. This makes the green deployment live for end users and moves the blue deployment to your staging slot where it remains until you remove it.

Which is staging slot blue or green in azure?

In simple words, staging slot is another web application, which sits inside in main web app service. It will have its own endpoint, configurations, connection string, extensions, etc. In above picture, Blue is Production Slot of Azure Web app service and Green is Staging Slot.

How are Azure web apps used in blue green deployments?

Azure web apps have the concept of slots. These are effectively a copy of the web app with a unique DNS name, which you can deploy your updated app to for testing, before swapping the slots to make the copy the master. The slots are commonly referred to as ‘staging’ and ‘production’. This is known as a ‘blue-green’ deployment.

Is Blue Green deployment zero downtime?

Instead of waiting until midnight to push the update to the production environment (when the least amount of users are active), you’re using a blue green deployment model to update the app during peak use. And you’re going to do it with zero downtime.

How do you do blue green deployments?

Using Blue-Green Deployment to Reduce Downtime and Risk

1. Step 1: Push an App.
2. Step 2: Update App and Push.
3. Step 3: Map Original Route to Green.
4. Step 4: Unmap Route to Blue.
5. Step 5: Remove Temporary Route to Green.

What is blue green deployment routing policy?

Route53
Weighted Routing is a routing policy on Route53 to control traffic weights among DNS endpoints. With this policy, we could test a pre-production stack with a small amount of live traffic or increase the amount gradually until it reaches 100%. For example, if blue is live, green is idle.

How does ECS blue green deployment work?

The workflow builds an automated CI/CD pipeline that deploys your service onto an ECS cluster and offers a controlled process to swap target groups when you’re ready to promote the latest version of your code to production. You can quickly set up the environment in three steps and see the blue/green swap in action.

What’s a major downside of the blue-green deployment strategy?

There are some drawbacks to blue/green deployment. For one thing, running two identical environments is expensive. Database refactoring can fix the schema problem, and a mirror database can fix a few other issues, but in general, caution is necessary when any blue/green deployment involves a database component.

How do you get zero downtime deployment blue-green when there is a database change?

The first try at the blue/green deployment process for this change could look like this:

1. Run the script to add the column CustomerFullName .
2. Run the backfill script to populate CustomerFullName .
3. Deploy code to the Blue environment.
4. Verify the code and database changes in the Blue environment.

What’s the difference between a blue-green deployment and a rolling deployment?

The difference between the rolling and blue/green strategies is that in a rolling strategy, the infrastructure is not in a separate network or environment like in blue/green. Like in-place deployments, rolling deployments suffer from a risky rollback if issues occur during deployment.

What is the difference between blue-green and canary deployment strategies?

Canary deployments allow organizations to test in production with real users and use cases and compare different service versions side by side. It’s cheaper than a blue-green deployment because it does not require two production environments.

Which routing policy could you ideally use in route53 for achieving Blue Green deployments?

AWS Documentation mentions that Weighted routing policy is good for testing new versions of software. And that this is the ideal approach for Blue-Green deployments.

What is AWS blue green deployment?

A blue/green deployment is a deployment strategy in which you create two separate, but identical environments. A number of AWS deployment services support blue/green deployment strategies including Elastic Beanstalk, OpsWorks, CloudFormation, CodeDeploy, and Amazon ECS.

How do you implement Blue Green deployment in AWS?

The deployment process, which takes about 15 minutes, includes these steps:

1. Check the prerequisites.
2. (Optional) Make a note of an existing Elastic Beanstalk environment and application.
3. Launch the Quick Start and customize your settings.
4. (Optional) If Git to S3 integration is enabled, configure your Git repository.

How do you do blue green deployment in Kubernetes?

Blue-Green Deployments

1. Version 1 of your application is already deployed.
2. Push version 2 of your application to your container image repository.
3. Deploy version 2 of your application to a new group of pods.
4. Run internal testing on version 2 and make sure it is ready to go live.

Can you use terraform for a blue green deployment?

Doing blue-green or canary deployments with terraform is a bit tricky but not impossible. Here, I have used resource targetting with Terraform to achieve Canary deployments Terraform is quite a versatile tool when it comes to infrastructure automation for cloud platforms.

Is it possible to use Terraform with AWS?

Terraform is quite a versatile tool when it comes to infrastructure automation for cloud platforms. If you are using tools like Kubernetes or ECS, blue-green or canary deployments using AWS primitives is quite straightforward. However, if you are stuck with using EC2 instances like I am, it becomes tricky to do this.

Why is it important to have blue infrastructure in TerraForm?

This is useful not only to reduce downtime, but also to improve rollback time when something bad happens.

Can a canary deployment be blue green using AWS?

If you are using tools like Kubernetes or ECS, blue-green or canary deployments using AWS primitives is quite straightforward. However, if you are stuck with using EC2 instances like I am, it becomes tricky to do this. The awesome folks at Hashicorp have already written a blog on how to do blue-green with Terraform.