Set PTR for LKE nodes IPs
Standalone Linodes have the option to set Reverse DNS (RDNS / PTR record on the IP address).
For LKE: While the underlying Linodes in a LKE cluster is still accessible (and we can set PTR record on the Linodes there), this won't survive a node recycle action.
Would it be possible to declare the desired PTR setting for all nodes in a LKE cluster? This would allow any node to send emails with the correct PTR setting, even if the nodes are recycled.
1 Reply
jhartman
Linode Staff
I'm not entirely sure how to best leverage our API in this situation, there is a setting exposed for adding/modifying the individual Node's PTR/rDNS value rdns: <string>
This could allow you to update your PTR after a Linode is recycled, but may require other tools like Terraform to handle automatically.
Otherwise, I typically recommend that people deploy a cluster-external Linode to act as the mail server for an LKE cluster.