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Learning Ceph - Second Edition by Karan Singh, Vaibhav Bhembre, Anthony D'Atri

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Admin host

Management of Ceph clusters is usually done via a set of command-line interface (CLI) tools. While some Ceph managers perform these actions from one or more MON hosts, others choose to provision one or more dedicated, standalone servers for the purpose. These admin hosts require very few resources and are easily implemented as Virtual Machines (VMs) or even piggybacked onto bastion, jump, gateway, or other infrastructure services. One choice might be to share an existing Puppet or Ansible master host, which is likely set up in a conducive fashion. Be careful, though, to not provision Admin hosts with circular dependencies. If you use an OpenStack instance with a boot drive that lives on a Ceph cluster, sooner or later you'll find ...

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