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Deploying New Releases Using the Canary Strategy

Deploying New Releases Using the Canary Strategy

Learn how to deploy a new release using the canary strategy.

We'll cover the following...

Use Argo Rollouts

What we’ve done up to now is a bit boring. We haven’t yet seen any advantage to using Argo Rollouts. That’s about to change. We’ll deploy a second release, and that should kick off the canary deployment process.

Let’s go!

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helm upgrade devops-toolkit helm \
    --namespace devops-toolkit \
    --reuse-values \
    --set image.tag=2.9.9

Watch the rollouts

We changed the tag of the image to 2.9.9 while reusing all the other values.

Let’s watch the rollout and see what’s going on.

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kubectl argo rollouts \
    --namespace devops-toolkit \
    get rollout devops-toolkit-devops-toolkit \
    --watch

Output of the yaml file

The output is as follows.

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Name:            devops-toolkit-devops-toolkit
Namespace:       devops-toolkit
Status:          ॥ Paused
Strategy:        Canary
  Step:          1/8
  SetWeight:     20
  ActualWeight:  20
Images:          vfarcic/devops-toolkit-series:2.6.2 (stable)
                 vfarcic/devops-toolkit-series:2.9.9 (canary)
Replicas:
  Desired:       2
  Current:       3
  Updated:       1
  Ready:         3
  Available:     3
NAME                                                       KIND        STATUS     AGE    INFO
⟳ devops-toolkit-devops-toolkit                            Rollout     ॥ Paused   2m56s  
├──# revision:2                                                                          
│  └──⧉ devops-toolkit-devops-toolkit-6785bfb67b           ReplicaSet  ✔ Healthy  36s    canary
│     └──□ devops-toolkit-devops-toolkit-6785bfb67b-zrzff  Pod         ✔ Running  36s    ready:1/1
└──# revision:1                                                                          
   └──⧉ devops-toolkit-devops-toolkit-849fcb5f44           ReplicaSet  ✔ Healthy  2m41s  stable
      ├──□ devops-toolkit-devops-toolkit-849fcb5f44-fgl5v  Pod         ✔ Running  2m41s  ready:1/1
      └──□ devops-toolkit-devops-toolkit-849fcb5f44-klcrh  Pod         ✔ Running  2m41s  ready:1/1

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