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Hi,

create is used for new object(s) creation declaratively (from a configuration file) or imperatively ( kubectl create deployment... ,kubectl create service...).

apply offers more flexibility and it is a recommended method for production object updates: it creates new objects if they do not exist from configuration files, it updates existing/live objects from single or multiple configuration files or directories, it helps preserve multiple configuration changes when performed by different sources.

Both commands are described in detail throughout the documentation. Here are a few links:

Kubectl book: https://kubectl.docs.kubernetes.io/

https://kubernetes.io/docs/concepts/overview/object-management-kubectl/overview/

https://kubernetes.io/docs/reference/kubectl/cheatsheet/

https://kubernetes.io/docs/reference/kubectl/overview/

Regards,
-Chris

Hi @furqanbaqai,
You are correct, the statement provided by you is useful for a multi-container pod. That is also mentioned on slide 3.14, right above the statement from the lecture:

If you have more than one container, declare which container

However, for a single-container pod, you can use it just as it is presented in the lecture, without declaring a container name. It works for a multi-container pod as well, but it defaults to the first started container.

Regards,
-Chris

You can find details about the Cloud Foundry certification exam here: https://training.linuxfoundation.org/certification/cloud-foundry-certified-developer-cfcd/.
This forum is only for the LFD232 course.