[vSphere Provider] Optimize the doc about frozen VM expressions (ray-…

…project#41233)

Currently some expressions in our doc about how to prepare the frozen VM are inprecise, this change optimized the document.

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Signed-off-by: Chen Jing <[email protected]>
Co-authored-by: Archit Kulkarni <[email protected]>

doc/source/cluster/vms/user-guides/launching-clusters/vsphere.md

@@ -16,13 +16,13 @@ Another way to prepare the vSphere environment is with VMware Cloud Foundation (
 
 ## Prepare the frozen VM
 
-The vSphere Ray cluster launcher requires the vSphere environment to have a VM in a frozen state prior to deploying a Ray cluster. This VM has all the dependencies installed and is later used to rapidly create head and worker nodes by VMware's [instant clone](https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-vm-administration/GUID-853B1E2B-76CE-4240-A654-3806912820EB.html) technology. The internal details of the Ray cluster provisioning process using frozen VM can be found in this [Ray on vSphere architecture document](https://github.com/ray-project/ray/blob/master/python/ray/autoscaler/_private/vsphere/ARCHITECTURE.md). 
+The vSphere Ray cluster launcher requires the vSphere environment to have a VM in a frozen state for deploying a Ray cluster. This VM has all the dependencies installed and is later used to rapidly create head and worker nodes by VMware's [instant clone](https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-vm-administration/GUID-853B1E2B-76CE-4240-A654-3806912820EB.html) technology. The details of the Ray cluster provisioning process using frozen VM can be found in this [Ray on vSphere architecture document](https://github.com/ray-project/ray/blob/master/python/ray/autoscaler/_private/vsphere/ARCHITECTURE.md). 
 
-You can follow [this document](https://via.vmw.com/frozen-vm-ovf) to create and set up the frozen VM, or a set of frozen VMs in which each one will be hosted on a distinct ESXi host in the vSphere cluster. By default, Ray clusters' head and worker node VMs will be placed in the same resource pool as the frozen VM. When building and deploying the frozen VM, there are a couple of things to note:
+You can follow the vm-packer-for-ray's [document](https://github.com/vmware-ai-labs/vm-packer-for-ray/blob/main/README.md) to use Packer to create and set up the frozen VM, or a set of frozen VMs in which each one will be hosted on a distinct ESXi host in the vSphere cluster. By default, Ray clusters' head and worker node VMs will be placed in the same resource pool as the frozen VM. When building and deploying the frozen VM, there are a couple of things to note:
 
 * The VM's network adapter should be connected to the port group or NSX segment configured in the above section. And the `Connect At Power On` check box should be selected.
 * After the frozen VM is built, a private key file (`ray-bootstrap-key.pem`) and a public key file (`ray_bootstrap_public_key.key`) will be generated under the HOME directory of the current user. If you want to deploy Ray clusters from another machine, these files should be copied to that machine's HOME directory to be picked up by the vSphere cluster launcher.
-* An OVF will be generated in the content library. If you want to deploy Ray clusters in other vSphere deployments, you can export the OVF and use it to create the frozen VM, instead of building it again from scratch.
+* An OVF will be generated in the content library. If you want to deploy Ray clusters in other vSphere deployments, you can use the content library's [publish and subscribe](https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-vm-administration/GUID-254B2CE8-20A8-43F0-90E8-3F6776C2C896.html) feature to sync the frozen VM's template to another vSphere environment. Then you can leverage Ray Cluster Launcher to help you create a single frozen VM or multiple frozen VMs firstly, then help you create the Ray cluster, check the [document](https://docs.ray.io/en/latest/cluster/vms/references/ray-cluster-configuration.html?highlight=yaml#vsphere-config-frozen-vm) for how to compose the yaml file to help to deploy the frozen VM(s) from an OVF template. 
 
 ## Install Ray cluster launcher