Yesterday I posted a blog article around how to create a new namespace for a new deployment and apply quotas. However, I immediately got several requests around is there an easier way to do this or apply quotas at the namespace level for all future pod creations.
Personal best practice; I like creating a yaml file for everything when I can. This way it is easy to transition to other engineers and if you need to make an edit to task it won’t possibly effect other variables inside the config file that may not be related to your change.
Article from yesterday:
How to set defaults at namespace level
Apply the two yaml files
$ kubectl describe limits limits –namespace=<namespace>
This will show you the default limits on the namespace now
This means when you deploy a deployment it will be using the defaults
apiVersion: apps/v1
kind: Deployment
metadata:
name: helloworld-deployment
namespace: namespace-demo
spec:
replicas: 3
selector:
matchLabels:
app: helloworld
template:
metadata:
labels:
app: helloworld
spec:
containers:
- name: k8s-demo
image: vmpebryant/k8s-demo
ports:
- name: nodejs-port
containerPort: 3000
Deploy the helloworld config file
As you may note from the previous blog article we have not specified the quotas in this config file
As you can see the three expected pods were deployed in the namespace
$ kubectl describe pod <pod> –namespace=<namespace>
Just to confirm the limits for the pod.
Summary:
Just by creating one additional config file we are able to set new default limits for resources on this namespace. As always, I hope y’all found this helpful.
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