Since there is currently no official RPM build, I created automated builds of the proxmox-backup-client for RHEL based distros on Fedora's COPR.
You can find the builds and further instructions here: https://copr.fedorainfracloud.org/coprs/derenderkeks/proxmox-backup-client/
The source for the builds is here: https://gitlab.com/DerEnderKeks/proxmox-backup-client-rpm
My builds are available for amd64 and aarch64, and are mostly based on the version from the AUR. I'm currently using them on Rocky Linux 9 without any problems.
If you have any issues with the builds or need a build for a RHEL-based distro that is currently not built in COPR, just let me know (here or, preferably, in a Gitlab issue).
Now you can install the proxmox-backup-client package:
You can now use the proxmox-backup-client and pxar binaries.
If you want to use the SRPMs for some reason, note that they do not actually contain any source code, since for unknown reasons the Proxmox devs don't publish their crates to the crates.io registry. This makes it way harder to do it the proper™ way and I thus just put a script into SRPM that downloads everything from their Git repos during the actual build. This doesn't influence the final RPM though.
You can find the builds and further instructions here: https://copr.fedorainfracloud.org/coprs/derenderkeks/proxmox-backup-client/
The source for the builds is here: https://gitlab.com/DerEnderKeks/proxmox-backup-client-rpm
My builds are available for amd64 and aarch64, and are mostly based on the version from the AUR. I'm currently using them on Rocky Linux 9 without any problems.
If you have any issues with the builds or need a build for a RHEL-based distro that is currently not built in COPR, just let me know (here or, preferably, in a Gitlab issue).
Installation:
First, enable the copr repo:dnf copr enable derenderkeks/proxmox-backup-client
Now you can install the proxmox-backup-client package:
dnf install proxmox-backup-client
You can now use the proxmox-backup-client and pxar binaries.
If you want to use the SRPMs for some reason, note that they do not actually contain any source code, since for unknown reasons the Proxmox devs don't publish their crates to the crates.io registry. This makes it way harder to do it the proper™ way and I thus just put a script into SRPM that downloads everything from their Git repos during the actual build. This doesn't influence the final RPM though.