Feature Request: be able to configure node name on node creation

[mbelchin]

Right now, when you create a new node, CSE picks a random node name, would be great to be able to define the name for the node on creation

[sahithi]

Hi,

Can you please state your use-cases on why you want to specify custom names for nodes? FYI, CSE uses strict naming convention to execute some logic internally. Your request is doable but would like to understand your cases better before we evaluate this further.

[mbelchin]

This is our use case:

Usually we use this naming convention master-XXX for masters or node-XXX for worker nodes.

The XXX is a number, i.e.: master-001, master-002, node-001, node-002, ... node-110, etc.

We make that XXX number to be the last part of our internal IPs, .i.e:
master node -> IP: 10.0.0.1 -> master-001
master node -> IP: 10.0.0.23 -> master-023
worker node -> IP: 10.0.0.172 -> node-172
worker node -> IP: 10.0.0.21 -> node-021

This way we can easily, at a glance, identify the node but also the internal IP for that node and we can really quick SSH into that node. We have some ssh custom config which allows us to do something like:
ssh [email protected]

Once you're inside the node through SSH, you always see the machine name as node-021 so you always know where you are. Simpler tan node-xr7j

Furthermore, we use external tool to monitorize our clusters and those tools send alerts. On that system we have also configured the names of the machines following same approach, node-XXX, master-XXX so it's quite handy whenever you receive the alert because you know how to connect to the node and fix the issue quickly.

Also when working with kubectl command plus the argument -o wide, you can filter for a specific node, using grep for instance. In this case is also way simpler to remind node-021 than node-x3ts.

So, would be great if at least we could define the random part of the name for new nodes. So your template could continue doing steps based on node-XXXX but the random part it's something configurable by the user.

If you need further clarifications, please feel free to contanct me.