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Installing Cephadm on Ubuntu

Ceph is an open source fault tolerant distributed storage system. It’s getting a lot of attention in the Kubernetes world via the Rook project, but you can install it directly onto servers using the cephadm tool.

However, the official curl-based installation doesn’t work on Ubuntu due to an outstanding bug with the add-repo command. But that’s easily fixed like this:

ubuntu@srv-n2uas:~$ curl --silent https://download.ceph.com/keys/release.asc | sudo apt-key add -
ubuntu@srv-n2uas:~$ sudo apt-add-repository https://download.ceph.com/debian-pacific
ubuntu@srv-n2uas:~$ sudo apt install -y cephadm

This installs cephadm and all the dependencies necessary to use it.

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