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четверг, 18 июня 2020 г.

Kubernetes tricks. How to get shell into a Kubernetes Node?


Question


I don't have SSH access to Kubernnetes nodes. How I can get into?

Answer


Get nodes names

kubectl get nodes -o wide
NAME                                 STATUS   ROLES   AGE   VERSION    INTERNAL-IP    EXTERNAL-IP   OS-IMAGE             KERNEL-VERSION      CONTAINER-RUNTIME
aks-agentpool1-81885468-vmss000000   Ready    agent   37d   v1.15.10   172.16.1.152   <none>        Ubuntu 16.04.6 LTS   4.15.0-1077-azure   docker://3.0.7
aks-agentpool1-81885468-vmss000001   Ready    agent   37d   v1.15.10   172.16.1.183   <none>        Ubuntu 16.04.6 LTS   4.15.0-1075-azure   docker://3.0.7
aks-agentpool1-81885468-vmss00000r   Ready    agent   16d   v1.15.10   172.16.0.206   <none>        Ubuntu 16.04.6 LTS   4.15.0-1075-azure   docker://3.0.7

Create YAML file

Update nodeName to name of the node you want access

helper.yaml


Run pod

kubectl apply -f .\helper.yaml

Attach to the pod

kubectl attach helper -i

Delete pod after you finish

kubectl delete pod/helper

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