is it possible to register a new node against an RKE cluster rancher-users #general

Title

limited-eye-27484

07/15/2022, 7:35 PM

is it possible to register a new node against an RKE cluster and apply a node label as part of the registration?

Does the

-e CATTLE_HOST_LABELS='my/label=setting'

still work with Rancher 2.x? I see it mentioned in the Rancher 1.x docs

tall-school-18125

07/15/2022, 10:55 PM

In RKE you would update the cluster.yml file and run

rke up

. In the cluster.yml you can add an arbitrary map of labels for each node.

limited-eye-27484

07/15/2022, 10:58 PM

What about from a cluster registration command?

sudo docker run -d --privileged --restart=unless-stopped --net=host -v /etc/kubernetes:/etc/kubernetes -v /var/run:/var/run  rancher/rancher-agent:v2.6.2 --server <https://my.rancher.domain> -e CATTLE_HOST_LABELS='my/label=setting' --token nope --worker

I haven’t tried it yet, just curious

tall-school-18125

07/15/2022, 11:03 PM

I've never seen a registration command for RKE1. Is this for RKE1 or RKE2?

limited-eye-27484

07/15/2022, 11:04 PM

tall-school-18125

07/15/2022, 11:05 PM

yes, it looks like you should be able to pass a

--node-label

option https://docs.rke2.io/install/install_options/linux_agent_config/

limited-eye-27484

07/15/2022, 11:05 PM

shoot

my bad It’s RKE1

I totally forgot about the Rancher vs RKE distinction >_<

tall-school-18125

07/15/2022, 11:07 PM

Ah, I see. So what we are really looking for is an option for the rancher agent.

In that case, yes - you can use CATTLE_NODE_LABEL
or
--label
and for multiple labels pass the option more than once. other options are here https://rancher.com/docs/rancher/v2.6/en/cluster-provisioning/rke-clusters/custom-nodes/agent-options/

limited-eye-27484

07/15/2022, 11:08 PM

Well there it is right in the documentation 🤦

TY much!!

tall-school-18125

07/15/2022, 11:09 PM

you're welcome!

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