In RHEL 10, /usr/bin/rhcd is being replaced with /usr/bin/yggd. In order to correctly support upgrading from rhc-0.2.x to rhc-0.3.x, a systemd drop-in file is being delivered with rhc-0.3.x. This file includes an alias from yggdrasil.service to rhcd.service, so any references to rhcd.service will continue to work.

Additionally, the configuration file /etc/rhc/config.toml is no longer read by yggd; a %pre and %post RPM script handle the migration from the old file to the one; it copies the file to the new location during %pre and modifies it during %post.

After upgrading, running systemctl status rhcd should print the status of yggdrasil.service.
After upgrading, the file /etc/rhc/config.toml should no longer exist; its contents should be in /etc/yggdrasil/config.toml instead.