kamranazeem/centos-multitool image - ErrImagePull

[themsay]

Your tutorial is really helpful. I have two things to point at on https://github.com/Praqma/LearnKubernetes/blob/master/kamran/Kubernetes-The-Hard-Way-on-BareMetal.md

1. As I was going through this I hit an issue with your test image kamranazeem/centos-multitool. I don't know if the problem is from my setup?

$ kubectl run centos-multitool --image=kamranazeem/centos-multitool
deployment "centos-multitool" created

$ kubectl get pods -o wide -w
NAME                                READY     STATUS             RESTARTS   AGE       IP            NODE
centos-multitool-1226373562-rb2md   0/1       ImagePullBackOff   0          53s       10.200.0.14   worker-1
nginx-158599303-7jkwz   1/1       Running   3         1d        10.200.1.13   worker-2
nginx-158599303-p89b2   1/1       Running   3         1d        10.200.0.13   worker-1
centos-multitool-1226373562-rb2md   0/1       ErrImagePull   0         1m        10.200.0.14   worker-1
centos-multitool-1226373562-rb2md   0/1       ImagePullBackOff   0         1m        10.200.0.14   worker-1
centos-multitool-1226373562-rb2md   0/1       ErrImagePull   0         1m        10.200.0.14   worker-1
centos-multitool-1226373562-rb2md   0/1       ImagePullBackOff   0         1m        10.200.0.14   worker-1

2. I suggesting instead of extracting the PodCIDR information with https://github.com/Praqma/LearnKubernetes/blob/master/kamran/Kubernetes-The-Hard-Way-on-BareMetal.md#managing-the-container-network-routes steps.

You can simple get all at once without container with command:

$ kubectl get nodes --output=jsonpath='{range .items[*]} {.spec.podCIDR} {.spec.externalID} {"\n"}{end}'
 10.200.0.0/24 worker-1 
 10.200.1.0/24 worker-2

or for each node can be done with below:

$ kubectl get nodes --output=jsonpath='{range .items[*]}{.spec.podCIDR} {.spec.externalID} {"\n"}{end}' | grep worker-1 | awk '{print $1}'
10.200.0.0/24

NB: 'worker-1' and 'worker-2' is my worker node hostname(s).

Thanks once again for your time.

[KamranAzeem]

Hi!
Thanks for your feedback!

For the multitool, the new image is actually here: https://github.com/Praqma/Network-MultiTool

Thanks for the short-hand / simplified command to extract network routes information. Very helpful. Thanks!

Regards,
Kamran

[themsay]

No such file or directory

$ git clone https://github.com/Praqma/LearnKubernetes.git
Cloning into 'LearnKubernetes'...
remote: Counting objects: 1279, done.
remote: Total 1279 (delta 0), reused 0 (delta 0), pack-reused 1279
Receiving objects: 100% (1279/1279), 6.93 MiB | 0 bytes/s, done.
Resolving deltas: 100% (564/564), done.
Checking connectivity... done.

$ cd LearnKubernetes/kamran/LoadBalancer-Files/
-bash: cd: LearnKubernetes/kamran/LoadBalancer-Files/: No such file or directory