auth-supported | string

Default: cephx

Which authentication flavour to use. . Valid options are "cephx" and "none". If "none" is specified, keys will still be created and deployed so that it can be enabled later.

ceph-cluster-network | string

The IP address and netmask of the cluster (back-side) network (e.g., 192.168.0.0/24) . If multiple networks are to be used, a space-delimited list of a.b.c.d/x can be provided.

ceph-public-network | string

The IP address and netmask of the public (front-side) network (e.g., 192.168.0.0/24) . If multiple networks are to be used, a space-delimited list of a.b.c.d/x can be provided.

config-flags | string

User provided Ceph configuration. Supports a string representation of a python dictionary where each top-level key represents a section in the ceph.conf template. You may only use sections supported in the template. . WARNING: this is not the recommended way to configure the underlying services that this charm installs and is used at the user's own risk. This option is mainly provided as a stop-gap for users that either want to test the effect of modifying some config or who have found a critical bug in the way the charm has configured their services and need it fixed immediately. We ask that whenever this is used, that the user consider opening a bug on this charm at http://bugs.launchpad.net/charms providing an explanation of why the config was needed so that we may consider it for inclusion as a natively supported config in the the charm.

customize-failure-domain | boolean

Setting this to true will tell Ceph to replicate across Juju's Availability Zone instead of specifically by host.

expected-osd-count | int

Provides an expected number of OSDs for the cluster. This value is used when calculating the number of placement groups for a pool creation. The number of placement groups for new pools are based upon the actual number of OSDs in the cluster or the expected-osd-count, whichever is greater. A value of 0 will cause the charm to only consider the OSDs which are in the cluster.

fsid | string

fsid of the ceph cluster. To generate a suitable value use `uuid` . This configuration element is mandatory and the service will fail on install if it is not provided.

harden | string

Apply system hardening. Supports a space-delimited list of modules to run. Supported modules currently include os, ssh, apache and mysql.

key | string

Key ID to import to the apt keyring to support use with arbitary source configuration from outside of Launchpad archives or PPA's.

loglevel | int

Default: 1

Mon and OSD debug level. Max is 20.

monitor-count | int

Default: 3

How many nodes to wait for before trying to create the monitor cluster this number needs to be odd, and more than three is a waste except for very large clusters.

monitor-secret | string

This value will become the mon. key. To generate a suitable value use: . ceph-authtool /dev/stdout --name=mon. --gen-key . This configuration element is mandatory and the service will fail on install if it is not provided.

nagios_context | string

Default: juju

Used by the nrpe-external-master subordinate charm. A string that will be prepended to instance name to set the host name in nagios. So for instance the hostname would be something like: juju-myservice-0 If you're running multiple environments with the same services in them this allows you to differentiate between them.

nagios_servicegroups | string

A comma-separated list of nagios servicegroups. If left empty, the nagios_context will be used as the servicegroup

pgs-per-osd | int

Default: 100

The number of placement groups per OSD to target. It is important to properly size the number of placement groups per OSD as too many or too few placement groups oer OSD may cause resource constraints and performance degradation. This value comes from the recommendation of the Ceph placement group calculator (http://ceph.com/pgcalc/) and recommended values are: . 100 - If the cluster OSD count is not expected to increase in the foreseeable future. 200 - If the cluster OSD count is expected to increase (up to 2x) in the foreseeable future. 300 - If the cluster OSD count is expected to increase between 2x and 3x in the foreseeable future.

prefer-ipv6 | boolean

If True enables IPv6 support. The charm will expect network interfaces to be configured with an IPv6 address. If set to False (default) IPv4 is expected. NOTE: these charms do not currently support IPv6 privacy extension. In order for this charm to function correctly, the privacy extension must be disabled and a non-temporary address must be configured/available on your network interface.

source | string

Optional configuration to support use of additional sources such as: - ppa:myteam/ppa - cloud:trusty-proposed/kilo - http://my.archive.com/ubuntu main The last option should be used in conjunction with the key configuration option. Note that a minimum ceph version of 0.48.2 is required for use with this charm which is NOT provided by the packages in the main Ubuntu archive for precise but is provided in the Ubuntu cloud archive.

sysctl | string

Default: { kernel.pid_max : 2097152, vm.max_map_count : 524288, kernel.threads-max: 2097152 }

YAML-formatted associative array of sysctl key/value pairs to be set persistently. By default we set pid_max, max_map_count and threads-max to a high value to avoid problems with large numbers (>20) of OSDs recovering. very large clusters should set those values even higher (e.g. max for kernel.pid_max is 4194303).

use-direct-io | boolean

Default: True

Configure use of direct IO for OSD journals.

use-syslog | boolean

If set to True, supporting services will log to syslog.

James Page Ceph Mon Lp1607961