Chapter 7. Troubleshooting conversions
This chapter lists troubleshooting resources and tips.
7.1. Troubleshooting resources
To help you troubleshoot issues that can occur during the conversion process, review the log messages that are printed to the console and log files.
Console Output
By default, only info, warning, error, and critical log level messages are printed to the console output by the Convert2RHEL
utility. To also print debug messages, use the --debug
option with the convert2rhel
command.
Logs
-
The
/var/log/convert2rhel/convert2rhel.log
file lists debug, info, warning, error, and critical messages. -
The
/var/log/convert2rhel/rpm_va.log
file lists all package files on the unconverted system that a user has modified. This output is generated by therpm -Va
command, which is run automatically unless the--no-rpm-va
option is used with theconvert2rhel
command.
7.2. Fixing dependency errors
During a conversion from a different Linux distribution to RHEL, certain packages might be installed without some of their dependencies.
Prerequisites
- You have successfully completed the conversion to RHEL. See Converting to a RHEL system for more information.
Procedure
Identify dependencies errors:
# yum check dependencies
If the command displays no output, no further actions are required.
-
To fix dependency errors, reinstall the affected packages. During this operation, the
yum
utility automatically installs missing dependencies. If the required dependencies are not provided by repositories available on the system, install those packages manually.
7.3. Troubleshooting issues with Red Hat Insights conversions
The following issues might occur when using Red Hat Insights to convert to RHEL.
7.3.1. Missing systems in pre-conversion analysis task
When running the Pre-conversion analysis for converting to RHEL task in Red Hat Insights, CentOS Linux 7 systems that appeared correctly in RHEL Inventory might not appear in the list of available systems to run the pre-conversion analysis on. This issue occurs when the Remote Host Configuration (RHC) is disconnected.
Procedure
- Log in to the Red Hat Hybrid Cloud Console and go to Red Hat Insights > RHEL > Inventory > Systems.
- Select the affected system from the table.
In the General Information tab, go to the System Status card and verify the RHC status:
- If the RHC status is Connected, RHC is connected correctly.
- If the RHC status is Not available, RHC is disconnected. Proceed to the next step to reconnect RHC.
Unregister the system in your terminal:
# rhc disconnect
To help with troubleshooting, set the
RHC systemd
service (rhcd
) logging to the highest level:# sed -ie 's%error%trace%' /etc/rhc/config.toml
Register your system with Red Hat Insights and re-enable RHC in your terminal:
# insights-client --register # rhc connect -a <activation_key> -o <organization_ID>
Replace activation_key and organization_ID with the activation key and organization ID from the Red Hat Customer Portal.
Verification
Verify that you can select the system in the Pre-conversion analysis for converting to RHEL task.
If the system still does not appear correctly, review error messages from
rhcd
and theinsights-client
tool:# journalctl -u rhcd # less /var/log/insights-client/insights-client.log
7.3.2. Pre-conversion analysis task fails to complete
After running the Pre-conversion analysis for converting to RHEL task, one or more of the systems can fail to generate a report with the error message Task failed to complete for an unknown reason. Retry this task at a later time. If this issue occurs, complete the steps below to troubleshoot.
Procedure
- Verify if the affected system is unavailable, for example because of a network accessibility issue or because the system is shut off.
Review the
RHC systemd
service (rhcd
) for errors:Stop rhcd in your terminal:
# systemctl stop rhcd
Set
rhcd
logging to the highest level:# sed -ie 's%error%trace%' /etc/rhc/config.toml
Restart
rhcd
:# systemctl start rhcd
Review error messages posted by
rhcd
:# journalctl -u rhcd
Review the
rhc-worker-script
log file for errors:# less /var/log/rhc-worker-script/rhc-worker-script.log
7.4. Known issues and limitations
The following issues and limitations are known to occur during the conversion:
- Systems that connect to the Internet using an HTTP proxy server cannot convert using Red Hat CDN or Satellite through RHSM. (RHELC-559)
- UEFI systems with Secure Boot enabled are not supported for conversion. To work around this issue, disable Secure Boot before the conversion and then re-enable after the conversion is complete. (RHELC-138)
- If you are converting by using Red Hat Insights, running two RHC daemon (rhcd) processes simultaneously prevents the pre-conversion analysis from running as expected. To prevent this issue, run only one rhcd process at a time. (HMS-2629)
- Some inhibitors found in the pre-conversion analysis and conversion can be overridden by setting an environment variable. Due to a known issue, the Hybrid Cloud Console does not recognize when this environment variable is set. As a result, overridable inhibitors must be remediated when converting by using Insights. (RHINENG-5943)
7.5. Obtaining support
If you experience problems during the conversion, notify Red Hat so that these problems can be addressed.
If you are experiencing problems during the conversion, raise a Support case of Severity 3 or Severity 4 level only. For more details, see Production Support Terms of Service.
Prerequisites
-
The
sos
package is installed. You must use this package to generate ansosreport
that is required when opening a support case for the Red Hat Support team.
Procedure
To obtain support, perform either of the following steps:
Open a support case:
-
Select RHEL 7 or RHEL 8 as the product, and provide an
sosreport
from your system. Generate an
sosreport
on your system:# sosreport
Note that you can leave the case ID empty.
-
Select RHEL 7 or RHEL 8 as the product, and provide an
Submit a bug report:
-
Open a bug, select RHEL 7 or RHEL 8 as the product, and select
convert2rhel
as the component.
-
Open a bug, select RHEL 7 or RHEL 8 as the product, and select
For details on generating an sosreport
, see the solution What is an sosreport and how to create one in Red Hat Enterprise Linux?.
For more information about opening and managing a support case on the Customer Portal, see the article How do I open and manage a support case on the Customer Portal?.
For information about Red Hat’s support policy for Linux distribution conversions, see Convert2RHEL Support Policy.