If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.

• Limits can be used to set the minimum amount of CPU and memory reserved or allocated for a container in a deployment and to also set the maximum amount of CPU and memory that can be used by the container in a deployment.
• Qutoas can be used the set the minimum and maximum amount of CPU and memory that can be used by all of the containers / deployments / pods in a project / namespace, or on a group of projects / namespaces, or to a user account. Quotas can also set a limit on the maximum number of running persistent volume claims, pods, replication controllers, routes, secrets, services, et cetera in a project / namespace.

The oc create quota command can be used to create a quota. In this example, the quota would be limited to a specific project / namespace.

oc create quota default-quota --hard=pods=10,cpu=1,memory=1G,pods=2,secrets=1 --namespace <some namespace>

The oc create clusterresourcequota command can be used to create a quota for the entire cluster.

oc create clusterresourcequota onehundredpods --hard=pods=100

If you do something that exceeds the quota, something like this should be returned.

~]$ oc create --filename pod.yml
Error from server (Forbidden): pods "pod001" is forbidden: exceeded quota: default-quota, requested: pods=1, used: pods=10, limited: pods=5