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Upgrade Image

You can declare the application's container image via image field of the Container schema.

For the full Container schema reference, please see here for more details.

Pre-requisite​

Please refer to the prerequisites in the guide for deploying an application.

The example below also requires you to have initialized the project using the kusion init command, which will generate a kcl.mod file under the project directory.

Example​

Update the image value in dev/main.k:

import catalog.models.schema.v1 as ac

helloworld: ac.AppConfiguration {
    workload.containers.nginx: {
        # dev stack has different image
        # set image to your want
        # before: 
        # image = "gcr.io/google-samples/gb-frontend:v4"
        # after: 
        image = "gcr.io/google-samples/gb-frontend:v5"
    }
}

Everything else in main.k stay the same.

Applying​

Re-run steps in Applying, update image is completed.

$ kusion apply
✔︎  Generating Spec in the Stack dev...                                                                                                                                                                                                                                         
Stack: dev  ID                                                       Action
* ├─     v1:Namespace:helloworld                                  UnChanged
* ├─     v1:Service:helloworld:helloworld-dev-helloworld-private  UnChanged
* └─     apps/v1:Deployment:helloworld:helloworld-dev-helloworld  Update


? Do you want to apply these diffs? yes
Start applying diffs ...
 SUCCESS  UnChanged v1:Namespace:helloworld, skip                                                                                                                                                                                                                               
 SUCCESS  UnChanged v1:Service:helloworld:helloworld-dev-helloworld-private, skip                                                                                                                                                                                               
 SUCCESS  Update apps/v1:Deployment:helloworld:helloworld-dev-helloworld success                                                                                                                                                                                                
Update apps/v1:Deployment:helloworld:helloworld-dev-helloworld success [3/3] █████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████ 100% | 0s
Apply complete! Resources: 0 created, 1 updated, 0 deleted.

Validation​

We can verify the application container (in the deployment template) now has the updated image (v5) as defined in the container configuration:

kubectl get deployment -n helloworld -o yaml
...
    template:
      ...
      spec:
        containers:
        - env:
          ...
          image: gcr.io/google-samples/gb-frontend:v5
          ...
...