initializing-deployments.md

Initializing Deployments

In this section you will create an InitializerConfiguration that force new Deployments to be initialized by the Envoy Initializer.

Create the helloworld deployment

kubectl apply -f deployments/helloworld.yaml

Notice only one container is running in the helloworld Pod:

kubectl get pods

NAME                                 READY     STATUS    RESTARTS   AGE
envoy-initializer-3840443721-bjfb4   1/1       Running   0          20m
helloworld-3116035291-3sswk          1/1       Running   0          7s

Create the Envoy Initializer InitializerConfiguration

kubectl apply -f initializer-configurations/envoy.yaml

At this point new Deployments will be initialized by the envoy-initializer.

Test the Envoy Initializer

Recreate the helloworld Deployment:

kubectl delete deployment helloworld

kubectl apply -f deployments/helloworld.yaml

Notice there are now two containers running in the helloworld Pod:

kubectl get pods

NAME                                 READY     STATUS    RESTARTS   AGE
envoy-initializer-3840443721-bjfb4   1/1       Running   0          22m
helloworld-3012526715-zk5kg          2/2       Running   0          31s

The second container is the Envoy proxy which was injected into the Pod by the Envoy Initializer.