This article provides vSphere Administrators steps to toggle between default shells available on the vCenter Server Appliance (vCSA).
VMware vCenter Server Appliance 6.0.x
VMware vCenter Server Appliance 6.5.x
VMware vCenter Server Appliance 6.7.x
VMware vCenter Server Appliance 7.0.x
VMware vCenter Server Appliance 8.0.x
Switching the vCenter Server Appliance 6.x to BASH Shell
Switching the vCenter Server Appliance 6.x to Appliance Shell
Note: This KB explains how to enable SSH on VCSA and also login issues with VCSA.
If you see the error message Access Denied when logging into an SSH session, see "Access Denied" error when using SSH to login to the appliance