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Update migration document to include private nodegroups #5084

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Apr 7, 2022
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Update migration document to include private nodegroups #5084

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14 changes: 14 additions & 0 deletions userdocs/src/usage/nodegroup-override-announcement.md
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Expand Up @@ -37,6 +37,20 @@ command:
/etc/eks/bootstrap.sh test-override-11 --container-runtime containerd --kubelet-extra-args "--node-labels=${NODE_LABELS}"
```

For nodegroups that have no outbound internet access, you'll need to supply `--apiserver-endpoint` and `--b64-cluster-ca`
to the bootstrap script as follows:

```yaml
overrideBootstrapCommand: |
#!/bin/bash

source /var/lib/cloud/scripts/eksctl/bootstrap.helper.sh

# Note "--node-labels=${NODE_LABELS}" needs the above helper sourced to work, otherwise will have to be defined manually.
/etc/eks/bootstrap.sh test-override-11 --container-runtime containerd --kubelet-extra-args "--node-labels=${NODE_LABELS}" \
--apiserver-endpoint ${API_SERVER_URL} --b64-cluster-ca ${B64_CLUSTER_CA}
```

Note the _`--node-labels`_ setting. If this is not defined, the node will join the cluster, but `eksctl` will ultimately
time out on the last step when it's waiting for the nodes to be `Ready`. It's doing a Kubernetes lookup for nodes that
have the label `alpha.eksctl.io/nodegroup-name=<cluster-name>`. This is only true for unmanaged nodegroups. For managed
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