There are a few ways to restrict vCLS machines to be run on one single datastore in VMware vCenter:
Storage policies: Create a storage policy that specifies the datastore you want to use for vCLS machines and then apply that policy to the Kubernetes namespace where vCLS machines are running. This will ensure that all vCLS machines in that namespace will be placed on the specified datastore.
Datastore clusters: Create a datastore cluster that contains only the datastore you want to use for vCLS machines and then configure the Kubernetes namespace where vCLS machines are running to use that datastore cluster. This will ensure that all vCLS machines in that namespace will be placed on the specified datastore.
Virtual machine storage policies: Create a virtual machine storage policy that specifies the datastore you want to use for vCLS machines and then apply that policy to the vCLS machines. This will ensure that all vCLS machines will be placed on the specified datastore
Virtual machine anti-affinity rules: You can create a virtual machine anti-affinity rule, which will prevent vCLS machines from running on the same datastore.
It’s important to note that these methods are not mutually exclusive and can be combined for a more robust restriction.
Additionally, it’s recommended to test the restriction in a non-production environment to ensure that the restriction does not negatively impact the performance or availability of the vCLS machines before implementing it in a production environment.
Is it a good practice to restrict vCLS machines to be run on one single datastore?
It depends on the specific requirements and use case for the vCLS machines. In general, it’s good practice to ensure that data is stored on a datastore that is appropriate for the specific use case and that meets the performance and availability requirements for the vCLS machines.
Restricting vCLS machines to run on a single datastore can have benefits, such as:
Improved performance: If the single datastore is optimized for the specific use case of the vCLS machines, performance can be improved.
Reduced storage costs: If the single datastore is less expensive than other datastores, storage costs can be reduced.
Simplified management: If all vCLS machines are on a single datastore, it can be easier to manage and monitor the storage for those machines.
However, restricting vCLS machines to run on a single datastore can also have drawbacks, such as:
Limited availability: If the single datastore experiences a failure, all vCLS machines will be affected and could result in a service interruption.
Limited scalability: If the single datastore becomes full, it could limit the ability to add more vCLS machines.
It’s important to weigh the benefits and drawbacks of restricting vCLS machines to run on a single datastore and consider the specific requirements and use case for the vCLS machines before making a decision. It’s also important to have a disaster recovery plan in case of any datastore failure.