currently i used docker-compose to arrange my application that consists of 3 dockerimages - a postgresql database and 2 wildfly application servers (Frontend-ui, backend).
My docker-compose.yml looks like this:
version: '3.0'
services:
my-webgui-service:
image: test/mywebgui
ports:
- "18081:8080"
links:
- my-app-service
my-app-service:
image: test/myapp
ports:
- "18080:8080"
- "29990:9990"
links:
- db-service
db-service:
image: test/postgres
ports:
- "15432:5432
Now, i would like to implement the same thing via kubernetes.
Is it possible to arrange this in a single yaml-File, that contains the configuration for service, deployment and pods? I thought that it is easier to manage automated deployments when not having seperated yml-files.
Is this a best practice?
Yes it's possible, simply separate the different resources such as deployments, services, etc. with ---. Concerning if it's a good practice or not: a matter of taste, rather. If you have all in one file it's more self-contained but for kubectl apply -f it doesn't really matter since it operates on directories as well.