Troubleshooting “Error: Cannot retrieve repository metadata (repomd.xml)” in Yum Update

Summary: Learn how to address the “Error: Cannot retrieve repository metadata (repomd.xml)” issue in Yum update. Follow these troubleshooting steps to resolve repository-related problems and keep your system up-to-date.
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Troubleshooting “Error: Cannot retrieve repository metadata (repomd.xml)” in Yum Update

If you’ve encountered the frustrating “Error: Cannot retrieve repository metadata (repomd.xml)” message while trying to update your system using Yum, fear not. This issue is often related to problems with the repository configuration on your Linux system. Here’s a step-by-step guide to troubleshooting and resolving this common problem.

Check Internet Connection

The first and simplest step is to ensure that your system has a working internet connection. Use commands like ping or try opening a web browser to verify connectivity. If the internet is not accessible, resolving that issue may fix your repository problem as well.

ping google.com

Disable IPv6

Some users have reported success by disabling IPv6. To do this, open the /etc/sysctl.conf file and add the following lines:

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1

Then, apply the changes with:

sysctl -p

Check Repository URLs

Ensure that the repository URLs in your Yum configuration files are correct. Navigate to the /etc/yum.repos.d/ directory and open the respective repository configuration file. Verify that the base URL is accurate and accessible.

cd /etc/yum.repos.d/
cat <repository_file_name>.repo

Clean Yum Metadata

Corrupted metadata may lead to the mentioned error. Clean the Yum metadata using the following commands:

yum clean all
rm -rf /var/cache/yum

Then, try running the update again:

yum update

Set Correct Date and Time

An incorrect system date or time can cause issues with SSL certificates. Ensure that your system’s date and time are set correctly.

date

Firewall Settings

Check if your firewall is blocking the Yum traffic. If you’re using a firewall, make sure it allows connections to the necessary repositories.

Proxy Configuration

If you are behind a proxy, make sure your proxy settings are configured correctly. Open the Yum configuration file and add your proxy information.

Conclusion

By following these troubleshooting steps, you should be able to resolve the “Error: Cannot retrieve repository metadata (repomd.xml)” issue in Yum update. Keep your system repositories properly configured, and you’ll be able to enjoy a smooth and error-free update process.

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