Configuring Ceph with Custom Config Settings¶

Customizing ceph.conf¶

Ceph demands for more careful configuration when deployed at scale.

It is possible to override any of the configuration parameters supported by puppet-ceph at deployment time via Heat environment files. For example:

parameter_defaults:
  ExtraConfig:
    ceph::profile::params::osd_journal_size: 2048

will customize the default osd_journal_size overriding any default provided in the ceph.yaml static hieradata.

Remember to add such an environment file to the deploy commandline:

openstack overcloud deploy --templates --ceph-storage-scale <number of nodes> -e /usr/share/openstack-tripleo-heat-templates/environments/storage-environment.yaml -e ~/my-ceph-settings.yaml

It is also possible to provide arbitrary stanza/key/value lines for ceph.conf using the special ceph::conf configuration class. For example by using:

parameter_defaults:
  ExtraConfig:
    ceph::conf::args:
      global/max_open_files:
        value: 131072
      global/my_setting:
        value: my_value

the resulting ceph.conf file should be populated with the following:

[global]
max_open_files: 131072
my_setting: my_value