Tekton - mount path workspace issue - Error of path - tekton

Question

Currently, I am trying to deploy tutum-hello-world. I have written a script for the same, but it does not work as it is supposed to.
I am certain that this issue is related to workspace.
UPDATE
Here is my code for task-tutum-deploy.yaml-
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
name: tutum-deploy
spec:
steps:
- name: tutum-deploy
image: bitnami/kubectl
script: |
kubectl apply -f /root/tekton-scripts/tutum-deploy.yaml
workspaces:
- name: messages
optional: true
mountPath: /root/tekton-scripts/
Error -
root#master1:~/tekton-scripts# tkn taskrun logs tutum-deploy-run-8sq8s -f -n default
[tutum-deploy] + kubectl apply -f /root/tekton-scripts/tutum-deploy.yaml
[tutum-deploy] error: the path "/root/tekton-scripts/tutum-deploy.yaml" cannot be accessed: stat /root/tekton-scripts/tutum-deploy.yaml: permission denied
container step-tutum-deploy has failed : [{"key":"StartedAt","value":"2021-06-14T12:54:01.096Z","type":"InternalTektonResult"}]
PS - I have placed my script on the master node at - /root/tekton-scripts/tutum-deploy.yaml
root#master1:~/tekton-scripts# ls -l tutum-deploy.yaml
-rwxrwxrwx 1 root root 626 Jun 11 11:31 tutum-deploy.yaml
OLD SCRIPT
Here is my code for task-tutum-deploy.yaml-
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
name: tutum-deploy
spec:
workspaces:
- name: messages
optional: true
mountPath: /root/tekton-scripts/tutum-deploy.yaml
steps:
- name: tutum-deploy
image: bitnami/kubectl
command: ["kubectl"]
args:
- "apply"
- "-f"
- "./tutum-deploy.yaml"
Here is my code for tutum-deploy.yaml which is present on the machine (master node) of Kubernetes cluster with read, write and execute permissions -
apiVersion: apps/v1
kind: Deployment
metadata:
name: hello-world-tutum
labels:
service: hello-world-tutum
spec:
replicas: 1
selector:
matchLabels:
service: hello-world-tutum
template:
metadata:
labels:
service: hello-world-tutum
spec:
containers:
- name: tutum-hello-world
image: tutum/hello-world:latest
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: hello-world-tutum
spec:
type: NodePort
selector:
service: hello-world-tutum
ports:
- name: "80"
port: 80
targetPort: 80
nodePort: 30050
I ran the following commands from my master node of Kubernetes cluster -
1. kubectl apply -f task-tutum-deploy.yaml
2. tkn task start tutum-deploy
Error -
Using tekton command - $ tkn taskrun logs tutum-deploy-run-tvlll -f -n default
task tutum-deploy has failed: "step-tutum-deploy" exited with code 1 (image: "docker-pullable://bitnami/kubectl#sha256:b83299ee1d8657ab30fb7b7925b42a12c613e37609d2b4493b4b27b057c21d0f"); for logs run: kubectl -n default logs tutum-deploy-run-tvlll-pod-vbl5g -c step-tutum-deploy
[tutum-deploy] error: the path "./tutum-deploy.yaml" does not exist
container step-tutum-deploy has failed : [{"key":"StartedAt","value":"2021-06-11T14:01:49.786Z","type":"InternalTektonResult"}]

Answer 1

The error is from this part of your YAML:
spec:
workspaces:
- name: messages
optional: true
mountPath: /root/tekton-scripts/tutum-deploy.yaml
spec.workspaces.mountPath expects a directory, rather than a file, as you have specified here. You may mean /root/tekton-scripts/ instead but I am unfamiliar with tutum-hello-world.
If you look at the documentation you will see that all references to mountPath are directories rather than files.