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Ceph Cookbook - Second Edition by Karan Singh, Michael Hackett, Vikhyat Umrao

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Upgrading your Ceph cluster

One of the several reasons for the greatness of Ceph is that almost all the operations on a Ceph cluster can be performed online, which means that your Ceph cluster is in production and serving clients, and you can perform administrative tasks on the cluster without downtime. One of these operations is upgrading the Ceph cluster version.

Since the first chapter, we have been using the Jewel release of Ceph. We will be demonstrating upgrading the Ceph cluster version from Jewel to Kraken using the Ansible rolling_update.yml playbook located in the /usr/share/ceph-ansible/infrastructure-playbooks directory. The rolling_update.yml playbook fully automates the Ceph cluster upgrade process.

Ansible upgrades the Ceph ...

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