TL:DR - Sorry if this is basic stuff, I'm learning Kubernetes. I'm trying to create a Kubernetes deployment in IBM Cloud and it's failing. The deployment works fine on my local minikube, but fails in IBM Cloud. Am I required to use the IBM Cloud namespace for deployment or should I be able to pull a Docker image into IBM Cloud from Docker public offerings?

Long version

I'm working through this course on IBM Cloud Kubernetes service (https://courses.cognitiveclass.ai/courses/course-v1:CognitiveClass+CO0401EN+v1/info)

In the prereqs, I need to deploy Redis for a guestbook database.

Those steps are: 1. Clone the repo

$  clone https://github.com/IBM/guestbook.git

2. cd to /guestbook/v2

3. Create the Redis controllers and services for both the master and the slave:

   $ kubectl create -f redis-master-deployment.yaml

The problem is that when I run:

$ kubectl create -f redis-master-deployment.yaml

The deployment fails:

$ kubectl get deployments -o wide
NAME           READY   UP-TO-DATE   AVAILABLE   AGE   CONTAINERS     IMAGES        SELECTOR
redis-master   0/1     1            0           10m   redis-master   redis:3.2.9   app=redis,role=master

$ kubectl get pods -o wide
NAME                           READY   STATUS             RESTARTS   AGE   IP              NODE          NOMINATED NODE   READINESS GATES
redis-master-577bc6fbb-b4trd   0/1     ImagePullBackOff   0          14m   172.30.113.18   10.241.0.11   <none>           <none>

I'm guessing here, but it looks like the IBM Cloud Kubernetes service cannot contact Docker to get the image.

$ kubectl describe pods redis-master-577bc6fbb-b4trd
Name:               redis-master-577bc6fbb-b4trd
Namespace:          default
Priority:           0
PriorityClassName:  <none>
Node:               10.241.0.11/10.241.0.11
Start Time:         Thu, 05 Mar 2020 12:01:45 -0500
Labels:             app=redis
                    pod-template-hash=577bc6fbb
                    role=master
Annotations:        kubernetes.io/psp: ibm-privileged-psp
Status:             Pending
IP:                 172.30.113.18
Controlled By:      ReplicaSet/redis-master-577bc6fbb
Containers:
  redis-master:
    Container ID:   
    Image:          redis:3.2.9
    Image ID:       
    Port:           6379/TCP
    Host Port:      0/TCP
    State:          Waiting
      Reason:       ErrImagePull
    Ready:          False
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-rxmp2 (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             False 
  ContainersReady   False 
  PodScheduled      True 
Volumes:
  default-token-rxmp2:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-rxmp2
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 600s
                 node.kubernetes.io/unreachable:NoExecute for 600s
Events:
  Type     Reason     Age                   From                  Message
  ----     ------     ----                  ----                  -------
  Normal   Scheduled  <unknown>             default-scheduler     Successfully assigned default/redis-master-577bc6fbb-b4trd to 10.241.0.11
  Warning  Failed     13m (x2 over 14m)     kubelet, 10.241.0.11  Failed to pull image "redis:3.2.9": rpc error: code = Unknown desc = failed to pull and unpack image "docker.io/library/redis:3.2.9": failed to resolve reference "docker.io/library/redis:3.2.9": failed to do request: Head https://registry-1.docker.io/v2/library/redis/manifests/3.2.9: dial tcp 34.197.189.129:443: i/o timeout
  Warning  Failed     12m                   kubelet, 10.241.0.11  Failed to pull image "redis:3.2.9": rpc error: code = Unknown desc = failed to pull and unpack image "docker.io/library/redis:3.2.9": failed to resolve reference "docker.io/library/redis:3.2.9": failed to do request: Head https://registry-1.docker.io/v2/library/redis/manifests/3.2.9: dial tcp 3.224.75.242:443: i/o timeout
  Normal   Pulling    11m (x4 over 14m)     kubelet, 10.241.0.11  Pulling image "redis:3.2.9"
  Warning  Failed     11m                   kubelet, 10.241.0.11  Failed to pull image "redis:3.2.9": rpc error: code = Unknown desc = failed to pull and unpack image "docker.io/library/redis:3.2.9": failed to resolve reference "docker.io/library/redis:3.2.9": failed to do request: Head https://registry-1.docker.io/v2/library/redis/manifests/3.2.9: dial tcp 54.210.105.17:443: i/o timeout
  Normal   BackOff    10m (x6 over 14m)     kubelet, 10.241.0.11  Back-off pulling image "redis:3.2.9"
  Warning  Failed     9m21s (x5 over 14m)   kubelet, 10.241.0.11  Error: ErrImagePull
  Warning  Failed     4m38s (x28 over 14m)  kubelet, 10.241.0.11  Error: ImagePullBackOff

I then went to my minikube to test and ran the same command

$ kubectl create -f ./redis-master-deployment.yaml 
deployment.apps/redis-master created


$ kubectl get deployments -o wide
NAME           READY   UP-TO-DATE   AVAILABLE   AGE   CONTAINERS     IMAGES        SELECTOR
redis-master   1/1     1            1           14s   redis-master   redis:3.2.9   app=redis,role=master

So I just need a point in the direction of where I'm going wrong here.