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Bug 1840364

Summary:	ERROR:dbus.proxies:Introspect error on :1.1185298:/EntitlementStatus: dbus.exceptions.DBusException
Product:	Red Hat Enterprise Linux 8	Reporter:	John Sefler <jsefler>
Component:	subscription-manager	Assignee:	Jiri Hnidek <jhnidek>
Status:	CLOSED ERRATA	QA Contact:	Red Hat subscription-manager QE Team <rhsm-qe>
Severity:	high	Docs Contact:
Priority:	urgent
Version:	8.3	CC:	csnyder, jhnidek, jstavel, redakkan
Target Milestone:	rc	Keywords:	EasyFix, Regression, Triaged
Target Release:	8.3	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	subscription-manager-1.27.9-1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-04 01:39:09 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:	1842946

Description John Sefler 2020-05-26 19:21:06 UTC

Description of problem:

I suspect that with the removal of rhsmd from RHEL-8.3 with Bug 1775714 / ENT-1959 , an upgraded system neglects to inform the dbus.service leaving behind a situation whereby the service continues to attempt to run rhsmd, but because  /usr/libexec/rhsmd has been removed, a traceback is thrown.  I believe this issue will happen when a RHEL-8.2 system is upgraded to RHEL8.3.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
Starting out with a RHEL8.2 system, I will show that subscription-manager registration is working and then upgrade subscription-manager and the demonstrate that registration will subsequently trace back...

[root@kvm-06-guest39 ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux release 8.2 (Ootpa)
[root@kvm-06-guest39 ~]# subscription-manager version
server type: This system is currently not registered.
subscription management server: 2.9.27-1
subscription management rules: 5.37
subscription-manager: 1.26.16-1.el8
[root@kvm-06-guest39 ~]# 
[root@kvm-06-guest39 ~]# systemctl status dbus.service
● dbus.service - D-Bus System Message Bus
   Loaded: loaded (/usr/lib/systemd/system/dbus.service; static; vendor preset: disabled)
   Active: active (running) since Tue 2020-05-26 14:47:55 EDT; 16min ago
     Docs: man:dbus-daemon(1)
 Main PID: 17370 (dbus-daemon)
    Tasks: 3 (limit: 23960)
   Memory: 29.1M
   CGroup: /system.slice/dbus.service
           ├─17370 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
           └─18026 /usr/libexec/platform-python /usr/libexec/rhsmd

May 26 14:47:55 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Successfully activated service 'org.freedesktop.PolicyKit1'
May 26 14:48:39 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.5' (uid=0 pid=17532 comm="/usr/libexec/pla>
May 26 14:48:39 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17535]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDenied: Failed to restore old f>
May 26 14:48:39 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
May 26 15:01:23 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.10' (uid=0 pid=17983 comm="/usr/libexec/pl>
May 26 15:01:23 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17986]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDenied: Failed to restore old f>
May 26 15:01:23 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
May 26 15:02:34 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.14' (uid=0 pid=18023 comm="/usr/libexec/pl>
May 26 15:02:34 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[18026]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDenied: Failed to restore old f>
May 26 15:02:34 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
[root@kvm-06-guest39 ~]# 
[root@kvm-06-guest39 ~]# subscription-manager register --serverurl=subscription.rhsm.stage.redhat.com --username=stage_auto_testuser
Registering to: subscription.rhsm.stage.redhat.com:443/subscription
Password: 
The system has been registered with ID: 73728245-eeb0-4b89-9dd4-d883a03fa697
The registered system name is: kvm-06-guest39.hv2.lab.eng.bos.redhat.com
[root@kvm-06-guest39 ~]# 
[root@kvm-06-guest39 ~]# subscription-manager unregister
Unregistering from: subscription.rhsm.stage.redhat.com:443/subscription
System has been unregistered.
[root@kvm-06-guest39 ~]# 
[root@kvm-06-guest39 ~]# subscription-manager unregister
This system is currently not registered.
[root@kvm-06-guest39 ~]# 


Now upgrade subscription-manager (using a nightly RHEL8.3 beaker repo for the upgrade)

[root@kvm-06-guest39 ~]# yum update subscription-manager redhat-release
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Last metadata expiration check: 0:01:05 ago on Tue 26 May 2020 02:15:56 PM EDT.
Dependencies resolved.
==========================================================================================
 Package                                  Arch     Version          Repository       Size
==========================================================================================
Upgrading:
 dnf-plugin-subscription-manager          x86_64   1.27.4-1.el8     beaker-BaseOS   282 k
 python3-subscription-manager-rhsm        x86_64   1.27.4-1.el8     beaker-BaseOS   354 k
 redhat-release                           x86_64   8.3-0.0.el8      beaker-BaseOS    40 k
 subscription-manager                     x86_64   1.27.4-1.el8     beaker-BaseOS   1.1 M
 subscription-manager-rhsm-certificates   x86_64   1.27.4-1.el8     beaker-BaseOS   255 k

Transaction Summary
==========================================================================================
Upgrade  5 Packages

Total download size: 2.0 M
Is this ok [y/N]: y
Downloading Packages:
(1/5): redhat-release-8.3-0.0.el8.x86_64.rpm              7.2 MB/s |  40 kB     00:00    
(2/5): dnf-plugin-subscription-manager-1.27.4-1.el8.x86_6  30 MB/s | 282 kB     00:00    
(3/5): python3-subscription-manager-rhsm-1.27.4-1.el8.x86  30 MB/s | 354 kB     00:00    
(4/5): subscription-manager-rhsm-certificates-1.27.4-1.el  20 MB/s | 255 kB     00:00    
(5/5): subscription-manager-1.27.4-1.el8.x86_64.rpm        54 MB/s | 1.1 MB     00:00    
------------------------------------------------------------------------------------------
Total                                                      73 MB/s | 2.0 MB     00:00     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                  1/1 
  Running scriptlet: subscription-manager-rhsm-certificates-1.27.4-1.el8.x86_64       1/1 
  Upgrading        : subscription-manager-rhsm-certificates-1.27.4-1.el8.x86_64      1/10 
  Upgrading        : python3-subscription-manager-rhsm-1.27.4-1.el8.x86_64           2/10 
  Upgrading        : dnf-plugin-subscription-manager-1.27.4-1.el8.x86_64             3/10 
  Upgrading        : subscription-manager-1.27.4-1.el8.x86_64                        4/10 
  Running scriptlet: subscription-manager-1.27.4-1.el8.x86_64                        4/10 
  Upgrading        : redhat-release-8.3-0.0.el8.x86_64                               5/10 
  Cleanup          : redhat-release-8.2-1.0.el8.x86_64                               6/10 
  Running scriptlet: subscription-manager-1.26.16-1.el8.x86_64                       7/10 
  Cleanup          : subscription-manager-1.26.16-1.el8.x86_64                       7/10 
  Running scriptlet: subscription-manager-1.26.16-1.el8.x86_64                       7/10 
  Cleanup          : python3-subscription-manager-rhsm-1.26.16-1.el8.x86_64          8/10 
  Cleanup          : subscription-manager-rhsm-certificates-1.26.16-1.el8.x86_64     9/10 
  Cleanup          : dnf-plugin-subscription-manager-1.26.16-1.el8.x86_64           10/10 
  Running scriptlet: dnf-plugin-subscription-manager-1.26.16-1.el8.x86_64           10/10 
  Verifying        : dnf-plugin-subscription-manager-1.27.4-1.el8.x86_64             1/10 
  Verifying        : dnf-plugin-subscription-manager-1.26.16-1.el8.x86_64            2/10 
  Verifying        : python3-subscription-manager-rhsm-1.27.4-1.el8.x86_64           3/10 
  Verifying        : python3-subscription-manager-rhsm-1.26.16-1.el8.x86_64          4/10 
  Verifying        : redhat-release-8.3-0.0.el8.x86_64                               5/10 
  Verifying        : redhat-release-8.2-1.0.el8.x86_64                               6/10 
  Verifying        : subscription-manager-1.27.4-1.el8.x86_64                        7/10 
  Verifying        : subscription-manager-1.26.16-1.el8.x86_64                       8/10 
  Verifying        : subscription-manager-rhsm-certificates-1.27.4-1.el8.x86_64      9/10 
  Verifying        : subscription-manager-rhsm-certificates-1.26.16-1.el8.x86_64    10/10 
Installed products updated.

Upgraded:
  dnf-plugin-subscription-manager-1.27.4-1.el8.x86_64                                     
  python3-subscription-manager-rhsm-1.27.4-1.el8.x86_64                                   
  redhat-release-8.3-0.0.el8.x86_64                                                       
  subscription-manager-1.27.4-1.el8.x86_64                                                
  subscription-manager-rhsm-certificates-1.27.4-1.el8.x86_64                              

Complete!
[root@kvm-06-guest39 ~]# 

Now attempt to use subscription-manager to register and unregister....

[root@kvm-06-guest39 yum.repos.d]# subscription-manager register --serverurl=subscription.rhsm.stage.redhat.com --username=stage_auto_testuser
Registering to: subscription.rhsm.stage.redhat.com:443/subscription
Password: 
The system has been registered with ID: acd31e79-dbe9-4948-90aa-20206b9c412f
The registered system name is: kvm-06-guest39.hv2.lab.eng.bos.redhat.com
ERROR:dbus.proxies:Introspect error on :1.16:/EntitlementStatus: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.19" (uid=0 pid=18257 comm="/usr/libexec/platform-python /usr/sbin/subscriptio" label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023") interface="org.freedesktop.DBus.Introspectable" member="Introspect" error name="(unset)" requested_reply="0" destination=":1.16" (uid=0 pid=18026 comm="/usr/libexec/platform-python /usr/libexec/rhsmd " label="system_u:system_r:rhsmcertd_t:s0-s0:c0.c1023")
ERROR:subscription_manager.dbus_interface:org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.19" (uid=0 pid=18257 comm="/usr/libexec/platform-python /usr/sbin/subscriptio" label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023") interface="com.redhat.SubscriptionManager.EntitlementStatus" member="update_status" error name="(unset)" requested_reply="0" destination=":1.16" (uid=0 pid=18026 comm="/usr/libexec/platform-python /usr/libexec/rhsmd " label="system_u:system_r:rhsmcertd_t:s0-s0:c0.c1023")
Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/subscription_manager/dbus_interface.py", line 64, in _update
    ignore_reply=self.has_main_loop)
  File "/usr/lib64/python3.6/site-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib64/python3.6/site-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib64/python3.6/site-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.19" (uid=0 pid=18257 comm="/usr/libexec/platform-python /usr/sbin/subscriptio" label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023") interface="com.redhat.SubscriptionManager.EntitlementStatus" member="update_status" error name="(unset)" requested_reply="0" destination=":1.16" (uid=0 pid=18026 comm="/usr/libexec/platform-python /usr/libexec/rhsmd " label="system_u:system_r:rhsmcertd_t:s0-s0:c0.c1023")
[root@kvm-06-guest39 yum.repos.d]# 
[root@kvm-06-guest39 yum.repos.d]# systemctl status dbus.service
● dbus.service - D-Bus System Message Bus
   Loaded: loaded (/usr/lib/systemd/system/dbus.service; static; vendor preset: disabled)
   Active: active (running) since Tue 2020-05-26 14:47:55 EDT; 23min ago
     Docs: man:dbus-daemon(1)
 Main PID: 17370 (dbus-daemon)
    Tasks: 3 (limit: 23960)
   Memory: 29.5M
   CGroup: /system.slice/dbus.service
           ├─17370 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
           └─18026 /usr/libexec/platform-python /usr/libexec/rhsmd

May 26 15:02:34 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.14' (uid=0 pid=18023 comm="/usr/libexec/pl>
May 26 15:02:34 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[18026]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDenied: Failed to restore old f>
May 26 15:02:34 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
May 26 15:05:41 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Reloaded configuration
May 26 15:05:41 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Reloaded configuration
May 26 15:05:42 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Reloaded configuration
May 26 15:05:42 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Reloaded configuration
May 26 15:05:42 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Reloaded configuration
May 26 15:06:45 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Rejected send message, 1 matched rules; type="method_call", sender=":1.19" (uid=0 pid=18257 comm="/usr/libexec/platf>
May 26 15:07:02 kvm-06-guest39.hv2.lab.eng.bos.redhat.com dbus-daemon[17370]: [system] Rejected send message, 1 matched rules; type="method_call", sender=":1.19" (uid=0 pid=18257 comm="/usr/libexec/platf>
[root@kvm-06-guest39 ~]# 




Actual results:
Notice above that /usr/libexec/platform-python /usr/libexec/rhsmd is still running as pat of the dbus.service (prior to the upgrade)

Expected results:
I think that as part of the upgrade of subscription-manager, that /usr/libexec/rhsmd service should be killed as an immediate post-install task.


Additional info:

Comment 4 Jan Stavel 2020-07-02 16:26:48 UTC

I have verified, that it works in version  - ie. no rhsmd dbus service anymore. 
And no traceback appears after I register a system.


[root@kvm-08-guest16 ~]# rpm -qa | grep subscription
python3-subscription-manager-rhsm-1.27.9-1.git.0.189a976.el8.x86_64
dnf-plugin-subscription-manager-1.27.9-1.git.0.189a976.el8.x86_64
subscription-manager-rhsm-certificates-1.27.9-1.git.0.189a976.el8.x86_64
subscription-manager-1.27.9-1.git.0.189a976.el8.x86_64


root@kvm-08-guest16 ~]# systemctl status dbus.service
● dbus.service - D-Bus System Message Bus
   Loaded: loaded (/usr/lib/systemd/system/dbus.service; static; vendor preset: disabled)
   Active: active (running) since Thu 2020-07-02 13:43:26 EDT; 1h 19min left
     Docs: man:dbus-daemon(1)
 Main PID: 822 (dbus-daemon)
    Tasks: 2 (limit: 23960)
   Memory: 3.8M
   CGroup: /system.slice/dbus.service
           └─822 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only

Jul 02 12:16:02 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[19351]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDenied: Failed to restore old fd limit: Operation n>
Jul 02 12:16:02 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
Jul 02 12:16:06 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.53' (uid=0 pid=19356 comm="/usr/libexec/platform-python /usr/sbi>
Jul 02 12:16:06 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[19359]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDenied: Failed to restore old fd limit: Operation n>
Jul 02 12:16:06 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
Jul 02 12:20:07 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Reloaded configuration
Jul 02 12:20:07 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Reloaded configuration
Jul 02 12:20:08 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Reloaded configuration
Jul 02 12:20:08 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Reloaded configuration
Jul 02 12:20:08 kvm-08-guest16.hv2.lab.eng.bos.redhat.com dbus-daemon[822]: [system] Reloaded configuration

Comment 5 Jan Stavel 2020-07-02 16:28:25 UTC

I have used our repo build in our rhsm-qe jenkins job.

Comment 7 John Sefler 2020-07-20 15:27:50 UTC

Verifying upgrade from subscription-manager-1.26.16-1.el8 on RHEL-8.2 to subscription-manager-1.27.10-1.el8 on RHEL-8.3...


[root@kvm-08-guest15 ~]# cat /etc/redhat-release
Red Hat Enterprise Linux release 8.2 (Ootpa)
[root@kvm-08-guest15 ~]# subscription-manager version
server type: This system is currently not registered.
subscription management server: 3.1.16-1
subscription management rules: 5.40
subscription-manager: 1.26.16-1.el8
[root@kvm-08-guest15 ~]# 
[root@kvm-08-guest15 ~]# subscription-manager identity
This system is not yet registered. Try 'subscription-manager register --help' for more information.
[root@kvm-08-guest15 ~]# 
[root@kvm-08-guest15 ~]# systemctl status dbus.service
● dbus.service - D-Bus System Message Bus
   Loaded: loaded (/usr/lib/systemd/system/dbus.service; static; vendor preset: disabled)
   Active: active (running) since Mon 2020-07-20 14:31:24 EDT; 3h 17min left
     Docs: man:dbus-daemon(1)
 Main PID: 838 (dbus-daemon)
    Tasks: 3 (limit: 23960)
   Memory: 31.1M
   CGroup: /system.slice/dbus.service
           ├─  838 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
           └─16076 /usr/libexec/platform-python /usr/libexec/rhsmd

Jul 20 10:32:02 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Reloaded configuration
Jul 20 10:47:15 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.39' (uid=0 pid=15>
Jul 20 10:47:15 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[15320]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDeni>
Jul 20 10:47:16 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
Jul 20 11:10:57 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.49' (uid=0 pid=16>
Jul 20 11:10:57 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[16055]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDeni>
Jul 20 11:10:58 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
Jul 20 11:11:23 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Activating service name='com.redhat.SubscriptionManager' requested by ':1.53' (uid=0 pid=16>
Jul 20 11:11:23 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[16076]: [system] Failed to reset fd limit before activating service: org.freedesktop.DBus.Error.AccessDeni>
Jul 20 11:11:23 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Successfully activated service 'com.redhat.SubscriptionManager'
[root@kvm-08-guest15 ~]# 

Now upgrade subscription-manager (using a nightly RHEL8.3 beaker repo for the upgrade)

[root@kvm-08-guest15 ~]# yum update subscription-manager* --enablerepo=beaker*
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Last metadata expiration check: 0:00:51 ago on Mon 20 Jul 2020 11:18:31 AM EDT.
Dependencies resolved.
====================================================================================================
 Package                                    Arch       Version              Repository         Size
====================================================================================================
Upgrading:
 dnf-plugin-subscription-manager            x86_64     1.27.10-1.el8        beaker-BaseOS     285 k
 python3-subscription-manager-rhsm          x86_64     1.27.10-1.el8        beaker-BaseOS     357 k
 subscription-manager                       x86_64     1.27.10-1.el8        beaker-BaseOS     1.1 M
 subscription-manager-rhsm-certificates     x86_64     1.27.10-1.el8        beaker-BaseOS     258 k

Transaction Summary
====================================================================================================
Upgrade  4 Packages

Total download size: 2.0 M
Is this ok [y/N]: y
Downloading Packages:
(1/4): dnf-plugin-subscription-manager-1.27.10-1.el8.x86_64.rpm      15 MB/s | 285 kB     00:00    
(2/4): python3-subscription-manager-rhsm-1.27.10-1.el8.x86_64.rpm    18 MB/s | 357 kB     00:00    
(3/4): subscription-manager-1.27.10-1.el8.x86_64.rpm                 33 MB/s | 1.1 MB     00:00    
(4/4): subscription-manager-rhsm-certificates-1.27.10-1.el8.x86_64.  15 MB/s | 258 kB     00:00    
----------------------------------------------------------------------------------------------------
Total                                                                54 MB/s | 2.0 MB     00:00     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                            1/1 
  Running scriptlet: subscription-manager-rhsm-certificates-1.27.10-1.el8.x86_64                1/1 
  Upgrading        : subscription-manager-rhsm-certificates-1.27.10-1.el8.x86_64                1/8 
  Upgrading        : python3-subscription-manager-rhsm-1.27.10-1.el8.x86_64                     2/8 
  Upgrading        : dnf-plugin-subscription-manager-1.27.10-1.el8.x86_64                       3/8 
  Upgrading        : subscription-manager-1.27.10-1.el8.x86_64                                  4/8 
  Running scriptlet: subscription-manager-1.27.10-1.el8.x86_64                                  4/8 
  Running scriptlet: subscription-manager-1.26.16-1.el8.x86_64                                  5/8 
  Cleanup          : subscription-manager-1.26.16-1.el8.x86_64                                  5/8 
  Running scriptlet: subscription-manager-1.26.16-1.el8.x86_64                                  5/8 
  Cleanup          : python3-subscription-manager-rhsm-1.26.16-1.el8.x86_64                     6/8 
  Cleanup          : subscription-manager-rhsm-certificates-1.26.16-1.el8.x86_64                7/8 
  Cleanup          : dnf-plugin-subscription-manager-1.26.16-1.el8.x86_64                       8/8 
  Running scriptlet: dnf-plugin-subscription-manager-1.26.16-1.el8.x86_64                       8/8 
  Verifying        : dnf-plugin-subscription-manager-1.27.10-1.el8.x86_64                       1/8 
  Verifying        : dnf-plugin-subscription-manager-1.26.16-1.el8.x86_64                       2/8 
  Verifying        : python3-subscription-manager-rhsm-1.27.10-1.el8.x86_64                     3/8 
  Verifying        : python3-subscription-manager-rhsm-1.26.16-1.el8.x86_64                     4/8 
  Verifying        : subscription-manager-1.27.10-1.el8.x86_64                                  5/8 
  Verifying        : subscription-manager-1.26.16-1.el8.x86_64                                  6/8 
  Verifying        : subscription-manager-rhsm-certificates-1.27.10-1.el8.x86_64                7/8 
  Verifying        : subscription-manager-rhsm-certificates-1.26.16-1.el8.x86_64                8/8 
Installed products updated.

Upgraded:
  dnf-plugin-subscription-manager-1.27.10-1.el8.x86_64                                              
  python3-subscription-manager-rhsm-1.27.10-1.el8.x86_64                                            
  subscription-manager-1.27.10-1.el8.x86_64                                                         
  subscription-manager-rhsm-certificates-1.27.10-1.el8.x86_64                                       

Complete!

[root@kvm-08-guest15 ~]# systemctl status dbus.service
● dbus.service - D-Bus System Message Bus
   Loaded: loaded (/usr/lib/systemd/system/dbus.service; static; vendor preset: disabled)
   Active: active (running) since Mon 2020-07-20 14:31:24 EDT; 3h 11min left
     Docs: man:dbus-daemon(1)
 Main PID: 838 (dbus-daemon)
    Tasks: 2 (limit: 23960)
   Memory: 4.1M
   CGroup: /system.slice/dbus.service
           └─838 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-ac>

Jul 20 11:10:57 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[16055]: [system] Failed to re>
Jul 20 11:10:58 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Successfully a>
Jul 20 11:11:23 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Activating ser>
Jul 20 11:11:23 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[16076]: [system] Failed to re>
Jul 20 11:11:23 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Successfully a>
Jul 20 11:19:30 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Reloaded confi>
Jul 20 11:19:30 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Reloaded confi>
Jul 20 11:19:31 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Reloaded confi>
Jul 20 11:19:31 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Reloaded confi>
Jul 20 11:19:31 kvm-08-guest15.hv2.lab.eng.bos.redhat.com dbus-daemon[838]: [system] Reloaded confi>
[root@kvm-08-guest15 ~]# 

VERIFIED: The running /usr/libexec/rhsmd process was killed as part of the upgrade.

[root@kvm-08-guest15 ~]# subscription-manager register --serverurl=subscription.rhsm.stage.redhat.com --username=stage_auto_testuser
Registering to: subscription.rhsm.stage.redhat.com:443/subscription
Password: 
The system has been registered with ID: 983068f8-22e4-4a11-9050-28fc670bdae8
The registered system name is: kvm-08-guest15.hv2.lab.eng.bos.redhat.com
[root@kvm-08-guest15 ~]# 
[root@kvm-08-guest15 ~]# rpm -q subscription-manager --changelog | grep 1840364
- 1840364: Kill rhsmd during post-install on rhel8
[root@kvm-08-guest15 ~]# 

VERIFIED: Registration after the upgrade succeeds without a traceback for org.freedesktop.DBus.Error.AccessDenied

Comment 10 errata-xmlrpc 2020-11-04 01:39:09 UTC

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 (subscription-manager bug fix and enhancement update), 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-2020:4460