Ceph is a distributed storage and network file system designed to provide excellent performance, reliability, and scalability. . This charm provides the RADOS HTTP gateway supporting S3 and Swift protocols for object storage.


Ceph is a distributed storage and network file system designed to provide
excellent performance, reliability and scalability.

This charm deploys the RADOS Gateway, a S3 and Swift compatible HTTP gateway
for online object storage on-top of a ceph cluster.


In order to use this charm, it is assumed that you have already deployed a ceph
storage cluster using the 'ceph' charm with something like this::

juju deploy -n 3 --config ceph.yaml ceph

To deploy the RADOS gateway simple do::

juju deploy ceph-radosgw
juju add-relation ceph-radosgw ceph

You can then directly access the RADOS gateway by exposing the service::

juju expose ceph-radosgw

The gateway can be accessed over port 80 (as show in juju status exposed


Note that you will need to login to one of the service units supporting the
ceph charm to generate some access credentials::

juju ssh ceph/0 \
'sudo radosgw-admin user create --uid="ubuntu" --display-name="Ubuntu Ceph"'

For security reasons the ceph-radosgw charm is not set up with appropriate
permissions to administer the ceph cluster.

Keystone Integration

Ceph >= 0.55 integrates with Openstack Keystone for authentication of Swift requests.

This is enabled by relating the ceph-radosgw service with keystone::

juju deploy keystone
juju add-relation keystone ceph-radosgw

If you try to relate the radosgw to keystone with an earlier version of ceph the hook
will error out to let you know.


Its possible to scale-out the RADOS Gateway itself::

juju add-unit -n 2 ceph-radosgw

and then stick a HA loadbalancer on the front::

juju deploy haproxy
juju add-relation haproxy ceph-radosgw

Should give you a bit more bang on the front end if you really need it.

Network Space support

This charm supports the use of Juju Network Spaces, allowing the charm to be bound to network space configurations managed directly by Juju. This is only supported with Juju 2.0 and above.

API endpoints can be bound to distinct network spaces supporting the network separation of public, internal and admin endpoints.

To use this feature, use the --bind option when deploying the charm:

juju deploy ceph-radosgw --bind "public=public-space internal=internal-space admin=admin-space"

alternatively these can also be provided as part of a juju native bundle configuration:

  charm: cs:xenial/ceph-radosgw
  num_units: 1
    public: public-space
    admin: admin-space
    internal: internal-space

NOTE: Spaces must be configured in the underlying provider prior to attempting to use them.

NOTE: Existing deployments using os-*-network configuration options will continue to function; these options are preferred over any network space binding provided if set.

Contact Information

Author: James Page james.page@ubuntu.com
Report bugs at: http://bugs.launchpad.net/charms/+source/ceph-radosgw/+filebug
Location: http://jujucharms.com/charms/ceph-radosgw


The Ceph RADOS Gateway makes use of a multiverse package libapache2-mod-fastcgi.
As such it will try to automatically enable the multiverse pocket in
/etc/apt/sources.list. Note that there is noting 'wrong' with multiverse
components - they typically have less liberal licensing policies or suchlike.


                            The IP address and netmask of the OpenStack Admin network (e.g.,
This network will be used for admin endpoints.

                            Server timeout configuration in ms for haproxy, used in HA
configurations. If not provided, default value of 30000ms is used.

                            Number of keystone tokens to hold in local cache.
                            Virtual IP(s) to use to front API services in HA configuration.

If multiple networks are being used, a VIP should be provided for each
network, separated by spaces.

                            The rados gateway stores objects in many different pools.  If you would
like to have multiple rados gateways each pointing to a separate set of
pools set this prefix.  The charm will then set up a new set of pools.
If your prefix has a dash in it that will be used to split the prefix
into region and zone.  Please read the documentation on federated rados
gateways for more information on region and zone.

                            The port that the RADOS Gateway will listen on.

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

                            Queue timeout configuration in ms for haproxy, used in HA
configurations. If not provided, default value of 5000ms is used.

                            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

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.

                            The IP address and netmask of the OpenStack Public network (e.g.,
This network will be used for public endpoints.

                            Default multicast port number that will be used to communicate between
HA Cluster nodes.

                            Default network interface on which HA cluster will bind to communication
with the other members of the HA Cluster.

                            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.

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

                            Newer versions of the Ceph RADOS Gateway support use of an embedded web
container instead of Apache + mod-fastcgi, avoiding some of the nuances
of using the stock mod-fastcgi packages from Ubuntu.

Enable this option to disable use of Apache and enable the embedded
web container feature.

                            Client timeout configuration in ms for haproxy, used in HA
configurations. If not provided, default value of 30000ms is used.

                            By default apache2 and libapache2-mod-fastcgi will be installed from the
Ubuntu archives. This option allows for an alternate ceph.com install
source which contains patched versions with added support for HTTP
100-continue. See the following page for more info:


                            The hostname or address of the public endpoints created for ceph-radosgw
in the keystone identity provider.

This value will be used for public endpoints. For example, an
os-public-hostname set to 'files.example.com' with will create
the following public endpoint for the ceph-radosgw:


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

                            When the Rados Gatway is installed it, by default, creates pools with
pg_num 8 which, in the majority of cases is suboptimal. A few rgw pools
tend to carry more data than others e.g. .rgw.buckets tends to be larger
than most. So, for pools with greater requirements than others the charm
will apply the optimal value i.e. corresponding to the number of OSDs
up+in the cluster at the time the pool is created. For others it will use
this value which can be altered depending on how big you cluster is. Note
that once a pool has been created, changes to this setting will be

                            Interval between revocation checks to keystone.
                            Comma-separated list of Swift operator roles; used when integrating with
OpenStack Keystone.

                            This value dictates the number of replicas ceph must make of any object
it stores within RGW pools. Note that once the RGW pools have been
created, changing this value will not have any effect (although it can be
changed in ceph by manually configuring your ceph cluster).

                            The IP address and netmask of the OpenStack Internal network (e.g.,
This network will be used for internal endpoints.

                            RadosGW debug level. Max is 20.
                            OpenStack region that the RADOS gateway supports; used when integrating
with OpenStack Keystone.

                            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:
If you're running multiple environments with the same services in them
this allows you to differentiate between them.

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

                            Connect timeout configuration in ms for haproxy, used in HA
configurations. If not provided, default value of 5000ms is used.