Register multiple Content Hosts with Duplicate UUID's to Red Hat Satellite 6

Solution Verified - Updated -

Environment

  • Red Hat Satellite 6.6 and later Versions.
  • Red Hat Enterprise Linux.
  • Register multiple machines which have duplicate UUID's

Issue

  • The system is registered and subscribed to Red Hat Satellite, but is not visible on the WebUI

  • Experiencing following error while trying to register Content Hosts with the same UUID

    HTTP error (500 - Internal Server Error): Multiple profiles found. Consider removing XXX which match this 
host.

  • Getting below error when trying to register a system:

    bash-4.2# subscription-manager register --org="RedHat" --activationkey="Test" --force
HTTP error (422 - Unknown): The DMI UUID of this host (EXXXXX-7XX7-XXXX-XXXX-AXXXXXXXX) matches other 
registered 
hosts: client.example.com

Resolution

  1. Add system dmi.system.uuid:

    [root@client ~]# subscription-manager facts|grep dmi.system.uuid
dmi.system.uuid: 45AA7104-5CB0-4A75-945D-7173C8DC5783

Administer > Settings > Content(tab) > Host Duplicate DMI UUIDs - Add the UUID in the form of an array

  2. Alternatively, Update UUID on individual machine

    [root@client ~]# vi /etc/rhsm/facts/uuid.facts
{"dmi.system.uuid": "customuuid"}

*customuuid = hostname which is unique for every machine.

  3. Re-register client machine. (Re-registering of both systems may be needed if the profile was unregistered by using the --force option)

  4. Verify that UUID in systems is different from the client machine:
    Hosts -> All Hosts -> Client machine -> facts -> dmi -> systems

Note

  • If registering to the Red Hat Customer Portal, navigate to the Systems page and search for your new and old host after reregistering.
  • If the machine has been cloned from the Virtual Machine, then remove the old facts.json file and re-register the system.

For more KB articles/solutions related to Red Hat Satellite 6.x Client Subscription Issues, please refer to the Red Hat Satellite Consolidated Troubleshooting Article for Red Hat Satellite 6.x Client Subscription Issues

Root Cause

  • The subscription-manager when trying to register a Content Host to Red Hat Satellite or Red Hat Customer Portal looks for dmi.system.uuid parameter that should be unique.
  • Creating a custom fact at /etc/rhsm/facts/ on the Content Host takes precedence over subscription-manager facts located in /var/lib/rhsm/facts/.
  • During cloning, the old subscription-manager ( RHSM ) data gets copied to the newly cloned Virtual Machine.
  • A system's UUID is a motherboard product UUID, which is set by the hardware vendor and is encoded into the BIOS and should always be unique.
  • The newly cloned Virtual Machine contains the copy of facts.json file which results in a duplicate UUID error.

Diagnostic Steps

  • Change the Context to any Organization and any location.

  • Check for duplicate resource errors like the one below in /var/log/foreman/production.log

    2020-05-10T20:00:49 [E|kat|388f6507] POST: https://satellite.example.com/pulp/api/v2/consumers/: {"id":"ede5aaea-f460-48fb-aa2a-f8d49c7eb373","display_name":"client.example.com"}: {"content_type"=>"application/json", "accept"=>"application/json"}
409 Conflict: {"error": {"code": "PLP0018", "data": {"resource_id": "ede5aaea-f460-48fb-aa2a-f8d49c7eb373"}, "description": "Duplicate resource: ede5aaea-f460-48fb-aa2a-f8d49c7eb373", "sub_errors": []}, "http_request_method": "POST", "exception": null, "error_message": "Duplicate resource: ede5aaea-f460-48fb-aa2a-f8d49c7eb373", "_href": "/pulp/api/v2/consumers/", "http_status": 409, "resource_id": "ede5aaea-f460-48fb-aa2a-f8d49c7eb373", "traceback": null}

  • Provide output of:

    # cat /var/lib/rhsm/facts/facts.json

  • Check for duplicate RHSM facts between 2 hosts in /var/lib/rhsm/facts/facts.json:

    {"dmi.system.uuid": "Not Present", "proc_cpuinfo.common.cpuid_level": "13", "virt.host_type": "kvm", "dmi.bios.address": "0xe8000", "lscpu.l1d_cache": "32K", "dmi.chassis.manufacturer": "QEMU", "distribution.name": "Red Hat Enterprise Linux Server", "lscpu.l1i_cache": "32K", "dmi.chassis.security_status": "Unknown", "dmi.memory.error_correction_type": "Multi-bit ECC", "dmi.processor.type": "Central Processor", 
--snip--
"dmi.memory.array_handle": "0x1000", "dmi.system.sku_number": "Not Specified", "dmi.processor.asset_tag": "Not Specified", "dmi.meta.cpu_socket_count": "8", "dmi.system.wake-up_type": "Power Switch"}

This solution is part of Red Hat’s fast-track publication program, providing a huge library of solutions that Red Hat engineers have created while supporting our customers. To give you the knowledge you need the instant it becomes available, these articles may be presented in a raw and unedited form.

Comments