Describing Deployment Jobs strategies in Azure DevOps multi-stage YAML

Describing Deployment Jobs strategies in Azure DevOps multi-stage YAML

Deployment jobs strategies in Azure DevOps Multi-stage YAML can be divided into several steps.

Here are the brief details about them.

1. Enable Initialization: Set up necessary configurations before deploying the update.

2. Deploy the Update: Apply the update or changes to the environment.

3. Route Traffic to the Updated Version: Shift traffic from the old version to the new version once deployed.

4. Test the Updated Version After Routing Traffic: Validate the new deployment by running tests.

5. Restore to Last Known Good Version: In case of failure, revert to the last stable deployment version.

Let's go these steps in detail now to understand them better.

1. Enable Initialization:

Before deploying the update, initialize necessary resources or configurations. This step ensures the environment is ready for the deployment.

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stages:
2
  - stage: Initialization
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    jobs:
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      - job: InitJob
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        steps:
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          - script: |
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              echo "Initializing environment..."
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              # Add necessary setup or initialization scripts

2. Deploy the Update:

Deploy the update to the environment. This step applies the necessary changes (e.g., new version, configurations) to the environment.

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stages:
2
  - stage: Deployment
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    dependsOn: Initialization
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    jobs:
5
      - job: DeployJob
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        steps:
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          - script: |
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              echo "Deploying updates..."
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              # Deployment scripts or infrastructure changes

3. Route Traffic to the Updated Version:

Once the update is deployed, route traffic to the new version. This step ensures that users interact with the latest changes.

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stages:
2
  - stage: TrafficRouting
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    dependsOn: Deployment
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    jobs:
5
      - deployment: RouteTraffic
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        steps:
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          - script: |
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              echo "Routing traffic to new version..."
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              # Traffic routing logic or configuration

4. Test the Updated Version After Routing Traffic:

After traffic has been shifted to the new version, run automated or manual tests to validate the deployment.

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1
stages:
2
  - stage: Testing
3
    dependsOn: TrafficRouting
4
    jobs:
5
      - job: TestJob
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        steps:
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          - script: |
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              echo "Testing updated version..."
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              # Run functional, performance, or integration tests

5. If There’s a Failure, Run Steps to Restore to the Last Known Good Version:

In case the update fails, revert to the last known stable version. This step ensures that the system remains functional even in failure scenarios.

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1
stages:
2
  - stage: FailureHandling
3
    dependsOn: Testing
4
    jobs:
5
      - job: RestoreJob
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        condition: failure()
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        steps:
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          - script: |
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              echo "Rolling back to last known good version..."
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              # Revert deployment or roll back changes

Complete Example

Here is the complete yaml.

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1
stages:
2
  - stage: Initialization
3
    jobs:
4
      - job: InitJob
5
        steps:
6
          - script: |
7
              echo "Initializing environment..."
8
              # Setup configurations or resources
9
  - stage: Deployment
10
    dependsOn: Initialization
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    jobs:
12
      - job: DeployJob
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        steps:
14
          - script: |
15
              echo "Deploying updates..."
16
              # Deployment scripts
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  - stage: TrafficRouting
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    dependsOn: Deployment
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    jobs:
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      - deployment: RouteTraffic
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        steps:
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          - script: |
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              echo "Routing traffic to new version..."
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              # Traffic configuration
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  - stage: Testing
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    dependsOn: TrafficRouting
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    jobs:
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      - job: TestJob
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        steps:
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          - script: |
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              echo "Testing updated version..."
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              # Run tests
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  - stage: FailureHandling
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    dependsOn: Testing
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    jobs:
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      - job: RestoreJob
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        condition: failure()
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        steps:
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          - script: |
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              echo "Rolling back to last known good version..."
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              # Rollback scripts

Explanation of Steps

1. Initialization: Prepares the environment for deployment, such as configuring infrastructure or environment settings.

2. Deploy the Update: Applies changes or updates to the environment, such as deploying a new application version or infrastructure updates.

3. Route Traffic: Directs user traffic to the updated version.

4. Test: Validates the success of the deployment through tests.

5. Rollback: Handles failures by rolling back to the last known stable state.

Summary

These strategies ensure a smooth deployment workflow while maintaining system stability and availability. Please come back through your comments and post about detail on any specific part. Thanks you for reading.