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

  • On Red Hat Satellite, 8 repositories are enabled for the target server. However, on the target server, the dnf repolist command displays only 4 repositories. As a result, not all repositories enabled in Red Hat Satellite are available on the client system.

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 = UUID 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:
    Legacy UI:
    Hosts -> All Hosts -> Client machine -> facts -> dmi -> systems

    New UI:
    Monitor -> Facts -> Search bar you can write "host = hostname_requested" -> dmi -> system

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"}

  • The yum repolist all output shows that some repositories appear as disabled on the target server, even though they are enabled in the Red Hat Satellite web UI.

     # yum repolist all
Updating Subscription Management repositories.
repo id                                                              repo name                                                                            status
STARS_DUORHELV8_DUO_RHEL_V8_Repo                                     DUO RHEL V8 Repo                                                                     disabled
STARS_DockerRHEL_Docker                                              Docker Repository                                                                    disabled
STARS_EPELRHELV08_EPELV08                                            EPELV08                                                                              disabled
STARS_MSSQLRHELV8_MSSQL                                              MSSQL                                                                                disabled
STARS_ZabbixRHELV8_Zabbix_repo_RHEL_V8                               Zabbix repo RHEL V8                                                                  enabled
STARS_ZabbixV7RHELV8_Zabbix_V7_RHEL_V8                               Zabbix V7 RHEL V8                                                                    disabled
rhel-8-for-x86_64-appstream-rpms                                     Red Hat Enterprise Linux 8 for x86_64 - AppStream (RPMs)                             enabled
rhel-8-for-x86_64-baseos-rpms                                        Red Hat Enterprise Linux 8 for x86_64 - BaseOS (RPMs)                                enabled
satellite-client-6-for-rhel-8-x86_64-rpms                            Red Hat Satellite Client 6 for RHEL 8 x86_64 (RPMs)                                  enabled

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