How to Login to SupervisorControlVM in vSphere Kubernetes

 vSphere 7 onwards provides vSphere with Kubernetes (formerly Project Pacific). Natively it supports VMs and containers on vSphere. Tanzu Kubernetes Grid Service (TKGS) helps to run fully compliant and conformant Kubernetes with vSphere. vSphere Pod runs natively on vSphere whereas Tanzu Kubernetes Cluster (TKC) is a managed cluster by the Tanzu Kubernetes Grid Service, with the virtual machine objects deployed inside of a vSphere Namespace.

For many administrative operations, system or cloud administrator needs to login to SupervisorControlVM to do those tasks. This article describes a step-by-step process to login to SupervisorControlVM and do administrative tasks.

First step is to login to vCenter via SSH. Execute decryptK8Pwd.py script under /usr/lib/vmware-wcp/ directory. This will help us to obtain SupervisorControlVM Virtual IP (VIP) and login credential

Connected to service
    * List APIs: "help api list"
    * List Plugins: "help pi list"
    * Launch BASH: "shell"

Command> shell

Shell access is granted to root

[ ~ ]# cd /usr/lib/vmware-wcp/
[ /usr/lib/vmware-wcp ]# ./decryptK8Pwd.py

Read key from file
Connected to PSQL

Cluster: domain-cxxxx:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx

IP: 10.10.10.2

PWD: sadfjhsdifudnnxjzxcnAIJDIDJFKASD-=+ASDJASDNksdjfhkcbbcdcbk

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Now I can login to SupervisorControlVM with above obtained virtual IP and password

[ /usr/lib/vmware-wcp ]# ssh 10.10.10.2

FIPS mode initialized

Password:

Last login: Tue Oct  4 05:35:57 2022 from 10.10.100.102

root@420f007a3156d05baab95084b457eb4c [ ~ ]#

I am successfully able to log in to SupervisorControlVM and do administrative tasks now.

root@420f007a3156d05baab95084b457eb4c [ ~ ]# kubectl get pods -n kube-system

NAME                           READY   STATUS    RESTARTS   AGE

coredns-855c5b4cfd-ftfx9       1/1     Running   0          3d2h

coredns-855c5b4cfd-lfcjf       1/1     Running   0          3d2h

coredns-855c5b4cfd-vzj42       1/1     Running   0          3d2h

Cheers 😎