Labels

Question 1

How do you get all pods that have a color label set to red?

Answer 1

kubectl get pods –selector=”color=red”

Question 2

How do you get all pods that have the labels color and shape set to red and ball?

Answer 2

kubectl get pods –selector=”color=red,shape=ball”

Question 3

How do you get all pods that have the label color, no matter the value?

Answer 3

kubectl get pods –selector=”color”

Question 4

How do you get all pods that have the label color set to red or blue?

Answer 4

kubectl get pods –selector=”color in (red, blue)”

Question 5

Give examples of use cases for annotations?

Answer 5

To track rollout status in rolling deployments. Add pointers to logging urls and other links.

Question 6

If no prefix is used in a label, can every user see the label?

Answer 6

No, only labels with prefixes can be seen by other users (Needs to be tested)

Question 7

What are field selectors?

Answer 7

Field selectors are another way of filtering resources by looking into the resources fields. For example “kubectl get pods –field-selector “metadata.name=pod-name”