How to Create a Deployment
In this section, we'll create a brand-new Kubernetes Deployment from a YAML file. We can do the same thing imperatively using the kubectl run command, but we shouldn't. The right way is the declarative way!
The following code snippet is the Deployment manifest file that we'll use. It's available in the book's GitHub repo in the deployments folder and is called deploy.yml.
The examples assume it's in your system's PATH and is called deploy.yml.
apiVersion: apps/v1 #Older versions of k8s use apps/v1beta1
kind: Deployment
metadata:
name: hello-deploy
spec:
replicas: 10
selector:
matchLabels:
app: hello-world
minReadySeconds: 10
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
maxSurge: 1
template:
metadata:
labels:
app: hello-world
spec:
containers:
- name: hello-pod
image: nigelpoulton/k8sbook:latest
ports:
...