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Bug 1873614 - [OSP16][RHEL8.2] some nodes do not support Cipher Suite 17 in lanplus mode
Summary: [OSP16][RHEL8.2] some nodes do not support Cipher Suite 17 in lanplus mode
Keywords:
Status: CLOSED MIGRATED
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: ipmitool
Version: 8.2
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: rc
: 8.0
Assignee: Pavel Cahyna
QA Contact: Jeff Bastian
Šárka Jana
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-08-28 18:37 UTC by camorris@redhat.co
Modified: 2023-12-15 19:04 UTC (History)
15 users (show)

Fixed In Version:
Doc Type: Known Issue
Doc Text:
.`ipmitool` is incompatible with certain server platforms The `ipmitool` utility serves for monitoring, configuring, and managing devices that support the Intelligent Platform Management Interface (IPMI). The current version of `ipmitool` uses Cipher Suite 17 by default instead of the previous Cipher Suite 3. Consequently, `ipmitool` fails to communicate with certain bare metal nodes that announced support for Cipher Suite 17 during negotiation, but do not actually support this cipher suite. As a result, `ipmitool` aborts with the `no matching cipher suite` error message. For more details, see the related link:https://access.redhat.com/solutions/5931381[Knowledgebase article]. To solve this problem, update your baseboard management controller (BMC) firmware to use the Cipher Suite 17. Optionally, if the BMC firmware update is not available, you can work around this problem by forcing `ipmitool` to use a certain cipher suite. When invoking a managing task with `ipmitool`, add the `-C` option to the `ipmitool` command together with the _number_ of the cipher suite you want to use. See the following example: ----- # ipmitool -I lanplus -H myserver.example.com -P mypass -C 3 chassis power status -----
Clone Of:
: 1876620 (view as bug list)
Environment:
Last Closed: 2023-09-21 22:08:16 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker   RHEL-6846 0 None Migrated None 2023-12-05 15:26:21 UTC
Red Hat Knowledge Base (Solution) 5931381 0 None None None 2021-04-06 08:31:23 UTC

Description camorris@redhat.co 2020-08-28 18:37:06 UTC 
Description of problem:
When using lanplus and forcing the cipher to be used we found that some nodes do not support Cipher Suite 17 in lanplus mode. It seems like in 16.0/8.1 the ipmitool version defaulted to C 3 but in 16.1/8.2 its defaulting to 17.  In the previous examples you can see I was using -l lan and not lanplus. 


Version-Release number of selected component (if applicable):
ipmitool-1.8.18-14.el8.x86_64

How reproducible:
Everytime

Steps to Reproduce:
1. Try to inspect a node or run the correct ipmitool command

Actual results:
Fails

Expected results:
Inspection successful

Additional info:

I peeled two from an existing OSP13 cluster to prep wider deployment. The two nodes import perfectly fine in 16.0 running on the same networks, but it fails in 16.1
Comment 3 Dmitry Tantsur 2020-08-30 10:55:44 UTC 
Could you show the error that actually happens without the -C flag? I suspect your hardware does not support the cipher discovery, which is now mandated by ipmitool. Moving to ipmitool for investigation.

I do agree that specifying cipher suite could be handy - could you open an RFE for that?
Comment 10 Dmitry Tantsur 2020-09-18 10:50:46 UTC 
Hi Vaclav,

We're receiving an increasing number of reports about hardware that claims to do negotiation but actually refuses to use the negotiated cipher 17 (even people from CERN have reported that upstream). Would it be possible for ipmitool to detect the cipher error and fall back to cipher 3 (unless an explicit one is requested)?

We have landed a work-around in ironic to provide an ability to pick a suite, but I don't think this approach scales well. It also won't help any other consumers of ipmitool.
Comment 23 Pavel Cahyna 2021-07-08 07:14:39 UTC 
Also, as a workaround seems to be implemented in ironic now (bz1876620), is it still a priority for OpenStack? And I suppose it should not be a blocker of bz1876620 anymore.
Comment 45 RHEL Program Management 2023-09-21 21:31:37 UTC 
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.
Comment 46 RHEL Program Management 2023-09-21 22:08:16 UTC 
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