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Version: v0.9

Configure Containers

You can manage container-level configurations in the AppConfiguration model via the containers field (under the workload schemas). By default, everything defined in the containers field will be treated as application containers. Sidecar containers will be supported in a future version of kusion.

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

Pre-requisiteโ€‹

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 stack directory.

Exampleโ€‹

helloworld/dev/main.k:

import catalog.models.schema.v1 as ac
import catalog.models.schema.v1.workload as wl
import catalog.models.schema.v1.workload.container as c
import catalog.models.schema.v1.workload.container.probe as p
import catalog.models.schema.v1.workload.network as n

helloworld: ac.AppConfiguration {
workload: wl.Service {
containers: {
"helloworld": c.Container {
image: "gcr.io/google-samples/gb-frontend:v4"
env: {
"env1": "VALUE"
"env2": "VALUE2"
}
resources: {
"cpu": "500m"
"memory": "512M"
}
# Configure an HTTP readiness probe
readinessProbe: p.Probe {
probeHandler: p.Http {
url: "http://localhost:80"
}
initialDelaySeconds: 10
}
}
}
replicas: 2
ports: [
n.Port {
port: 80
}
]
}
}

Applyโ€‹

Re-run steps in Applying, new container configuration can be applied.

$ kusion apply
โœ”๏ธŽ Generating Spec in the Stack dev...
Stack: dev ID Action
* โ”œโ”€ v1:Namespace:helloworld UnChanged
* โ”œโ”€ v1:Service:helloworld:helloworld-dev-helloworld-private UnChanged
* โ””โ”€ 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] โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ 100% | 0s
Apply complete! Resources: 0 created, 1 updated, 0 deleted.

Validationโ€‹

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

$ kubectl get deployment -n helloworld -o yaml
...
template:
...
spec:
containers:
- env:
- name: env1
value: VALUE
- name: env2
value: VALUE2
image: gcr.io/google-samples/gb-frontend:v4
imagePullPolicy: IfNotPresent
name: helloworld
readinessProbe:
failureThreshold: 3
httpGet:
host: localhost
path: /
port: 80
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
resources:
limits:
cpu: 500m
memory: 512M
...