I have created a GKE cluster using terraform script. I have a scenario where the /etc/hosts file has to be updated. Is it possible to update the host file on worker nodes during K8 cluster creation using terraform?
With terraform it's not possible to access the directory, You can use a DeamonSet with Security Context as privileged see below:
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
name: ssd-startup-script
labels:
app: ssd-startup-script
spec:
template:
metadata:
labels:
app: ssd-startup-script
spec:
hostPID: true
containers:
- name: ssd-startup-script
image: gcr.io/google-containers/startup-script:v1
imagePullPolicy: Always
securityContext:
privileged: true
env:
- name: STARTUP_SCRIPT
value: |
#!/bin/bash
<YOUR COMMAND LINE>
<YOUR COMMAND LINE>
<YOUR COMMAND LINE>
echo Done
you need to run the kubectl apply -f <demonset yaml file>