I have a template that is basically an utility container for running kubectl inside a pod.
What I want to do, is to be able to have multiple deployments of that same template, with different names, as in "utilitypod-randomID".
Is there a way to do that, via kubectl and some shell scripting, or something similar?
The current template looks like this:
apiVersion: v1
kind: Pod
metadata:
name: utilitypod
namespace: blah-dev
labels:
purpose: utility-pod
spec:
containers:
- name: utilitypod
image: blahblah/utilitypod:latest
command: [ "/bin/bash", "-c", "--" ]
args: [ "while true; do sleep 28800; done;" ]
env:
- name: KUBERNETES_SERVICE_HOST
value: "api.dev.blah.internal"
- name: KUBERNETES_SERVICE_PORT
value: "443"You can replace name with generateName, which adds a random suffix. Your template will look like this:
apiVersion: v1
kind: Pod
metadata:
generateName: utilitypod-
namespace: blah-dev
labels:
purpose: utility-pod
spec:
containers:
- name: utilitypod
image: blahblah/utilitypod:latest
command: [ "/bin/bash", "-c", "--" ]
args: [ "while true; do sleep 28800; done;" ]
env:
- name: KUBERNETES_SERVICE_HOST
value: "api.dev.blah.internal"
- name: KUBERNETES_SERVICE_PORT
value: "443"Mind you, this will only work with kubectl create -f template.yaml, not apply, as apply looks for a resource by its name and tries to compare their definitions, but this template doesn't contain a specific name.