5.3. Image pull policy
Each container in a pod has a container image. Once you have created an image and pushed it to a registry, you can then refer to it in the pod.
5.3.1. Image pull policy overview
When OpenShift Container Platform creates containers, it uses the container imagePullPolicy to determine if the image should be pulled prior to starting the container. There are three possible values for imagePullPolicy:
| Value | Description |
|---|---|
|
| Always pull the image. |
|
| Only pull the image if it does not already exist on the node. |
|
| Never pull the image. |
If a container imagePullPolicy parameter is not specified, OpenShift Container Platform sets it based on the image tag:
-
If the tag is
latest, OpenShift Container Platform defaultsimagePullPolicytoAlways. -
Otherwise, OpenShift Container Platform defaults
imagePullPolicytoIfNotPresent.
