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It is recommended that you create a Ceph configuration file and populate it with the fsid, the mon initial members and the mon host settings. You set all the settings at runtime. If desired, the Ceph configuration file can contain only those items that override the default values. Maintaining those settings in a file makes it easier
24 Mar 2015 Honestly, protection group calculations is something that still does not convince me totally, I don't get the reason why it should be left to the Ceph admin to be manually configured, and then often complain that is wrong. Anyway, as long as it cannot be configured automatically, the rule of thumb I've find out
Generate a unique ID (i.e., fsid ) for your cluster. Add the unique ID to your Ceph configuration file. Add the initial monitor(s) to your Ceph configuration file. Add the IP address(es) of the initial monitor(s) to your Ceph configuration file and save the file.
28 May 2013 Notes on deploying ceph manually. Most of the docs on setting up ceph either use ceph-deploy or mkcephfs. However, these tools are not suitable for an automatic deploying system like Ansible, CFEngie or Puppet, because by hiding the complexity behind the installation and configuration process, they
The Configuration File. When you start a Ceph Storage Cluster, each daemon looks for a Ceph configuration file (i.e., ceph.conf by default) that provides the cluster's configuration settings. For manual deployments, you need to create a Ceph configuration file.
Deployment Scenarios. There are two main scenarios for deploying a Ceph cluster, which impact how you initially configure Cephx. Most first time Ceph users use ceph-deploy to create a cluster (easiest). For clusters using other deployment tools (e.g., Chef, Juju, Puppet, etc.), you will need to use the manual procedures or
For example, if you upgraded Red Hat Ceph Storage 1.3 clusters to version 2 manually, configure them to use Ansible by following this procedure: After manually upgrading from version 1.3 to version 2, install and configure Ansible on the administration node. This is the node where the master Ceph configuration file is
Install the Required Software¶. For manually deployed clusters, you must install Ceph packages manually. See Installing Ceph (Manual) for details. You should configure SSH to a user with password-less authentication and root permissions.

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February 2018