v.: 2020-09-04
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Definition of the vSAN ESXi host nodes
Define the hosts to be shut down by RCCMD. The virtual machines
can be moved to other hosts via the vCenter. To shut down a host,
RCCMD requires the following information:
HOST / IP name
We recommend using the IP address of the host at this point to
avoid addressing problems when parts of the IT infrastructure are
down.
Due to the fact RCCMD supports host names, you may enter a host
name, too.
User
A user with the appropriate system rights to shut down the VM Ware
environment accordingly. Normally, it is the local host administrator
Password
The password assigned to the user that allows RCCMD to authenticate itself as authorized.
Shutdown delay
The next step is to determine how much time RCCMD should allow the virtual machines to shut down before the before the
ESXi host will quit all operation and switches off:
The vSAN has a special feature compared to other operating modes:
The shutdown duration typically defines the time window that a host grant the operating systems within virtual machines before
the virtual machine is simply powered off. Thereby it does not matter if a vCenter has previously tried to migrate machines or
not.
When this command is issued to the hosts running in a vSAN, there are no more virtual machines that need to be powered off:
- All hosts must be in maintenance mode
- A host can only be in maintenance if all virtual machines are moved or switched off.
For the hosts in vSAN, this means that the shutdown time of virtual machines can be set to 1 second:
The shutdown routine on a vSAN has already brought all hosts into maintenance mode. Consequently, no time window is
required to grant operating systems within a virtual machine for a shut down.
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