Updating Overlay Packages on CentOS
To update the overlay utility or related packages on CentOS, you can use either yum (CentOS 7 and earlier) or dnf (CentOS 8 and later). Here’s a step-by-step guide:
Before updating, ensure your system’s package repositories are current. Run:
sudo yum clean all && sudo yum update # For CentOS 7
sudo dnf clean all && sudo dnf update # For CentOS 8+
This synchronizes your local package index with remote repositories, ensuring you get the latest versions.
Verify the currently installed overlay package version:
rpm -q overlay # For both yum and dnf
Or, if using yum/dnf directly:
sudo yum list installed | grep overlay # For CentOS 7
sudo dnf list installed | grep overlay # For CentOS 8+
Use the appropriate package manager to update overlay:
sudo yum update overlay # For CentOS 7
sudo dnf update overlay # For CentOS 8+
If you want to update all packages related to overlay (e.g., overlay-utils), use:
sudo yum update \*.overlay\* # For CentOS 7
sudo dnf update \*.overlay\* # For CentOS 8+
After the update completes, confirm the new version:
rpm -q overlay # Check the updated version
You can also check the package changelog for details about the update:
rpm -q --changelog overlay | less
Some services (like Docker) rely on the overlay filesystem. If you’re using Docker with the overlay2 storage driver, restart the Docker service to apply changes:
sudo systemctl restart docker
Check the Docker logs to ensure the overlay driver is active:
sudo journalctl -u docker -f
/etc/yum.repos.d/, /var/lib/docker/) to avoid data loss.overlay. If conflicts arise, consult the application documentation.By following these steps, you can safely update the overlay package on CentOS while minimizing downtime and risks.
