Bug 1995684
| Summary: | Adding a BYOH node with a different DNS address than the hostname fails | ||
|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Sebastian Soto <ssoto> |
| Component: | Windows Containers | Assignee: | Mohammad Saif Shaikh <mohashai> |
| Status: | CLOSED ERRATA | QA Contact: | gaoshang <sgao> |
| Severity: | low | Docs Contact: | |
| Priority: | high | ||
| Version: | 4.9 | CC: | aos-bugs, jvaldes, mankulka, team-winc |
| Target Milestone: | --- | ||
| Target Release: | 4.9.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
Cause: WMCO used the raw user-provided instance address when creating BYOH Windows nodes
Consequence: BYOH Windows instances would not be configured to join an OpenShift cluster
Fix: Ensures user provided DNS names resolve to valid IPv4 addresses, and using the resolved value when creating associated nodes
Result: Allows BYOH instances with differing hostnames and DNS addresses to be configured as Windows Nodes
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-10-28 17:41:17 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 2000787 | ||
Marking VERIFIED for release-4.8 PR to merge, will move back to ON_QA. This bug has been verified on OCP 4.9.0-0.nightly-2021-09-05-204238, thanks. Steps: 1, On UPI baremetal cluster, configure BYOH Windows instance with DNS name in configmap, make sure DNS name is different with hostname. PS C:\Users\Administrator> nslookup 10.0.55.187 Server: ip-10-0-0-2.us-east-2.compute.internal Address: 10.0.0.2 Name: ip-10-0-55-187.us-east-2.compute.internal Address: 10.0.55.187 PS C:\Users\Administrator> hostname sgao-win1 2, Check BYOH Windows instance is configured as a node Note: Found BYOH Windows instance got deconfigured immediately when ready, another Bug 2001547 is opened to track it. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Windows Container Support for Red Hat OpenShift 4.0.0 product release), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:3702 |
Description of problem: Adding a BYOH node using a DNS address that is different than the hostname results in an error such as: ``` 2021-08-19T15:05:54.094Z DEBUG controller-runtime.manager.events Warning {"object": {"kind":"ConfigMap","namespace":"openshift-windows-machine-config-operator","name":"windows-instances","uid":"29d12cf0-eb29-4712-ba56-7e27e99a899a","apiVersion":"v1","resourceVersion":"525987"}, "reason": "InstanceSetupFailure", "message": "error configuring host with address dhcp-host-90.cloud.chx: error getting node object: unable to find node with address dhcp-host-90.cloud.chx: timed out waiting for the condition"} ``` This is due to the node status object not having the given address present in it: ``` status: addresses: - address: 192.168.1.90 type: ExternalIP - address: 192.168.1.90 type: InternalIP - address: dhcp-host-90 type: Hostname ``` This can be worked around by using the instance's IP address in the windows-instances ConfigMap instead. Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. Try to configure a BYOH Windows instance using a DNS address that is different from the instance's hostname. 2. The error will appear in the WMCO logs and/or the windows-instance ConfigMap events. Actual results: Error as seen above Expected results: No error, instance is fully configured as a node. Additional info: This can be fixed by doing a DNS lookup of the address, and using the IP to locate the node.