108 lines
3.4 KiB
Markdown
108 lines
3.4 KiB
Markdown
Overview
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========
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Ceph is a distributed storage and network file system designed to provide
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excellent performance, reliability and scalability.
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This charm deploys the RADOS Gateway, a S3 and Swift compatible HTTP gateway
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for online object storage on-top of a ceph cluster.
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Usage
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=====
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In order to use this charm, it is assumed that you have already deployed a ceph
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storage cluster using the 'ceph' charm with something like this::
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juju deploy -n 3 --config ceph.yaml ceph
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To deploy the RADOS gateway simple do::
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juju deploy ceph-radosgw
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juju add-relation ceph-radosgw ceph
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You can then directly access the RADOS gateway by exposing the service::
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juju expose ceph-radosgw
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The gateway can be accessed over port 80 (as show in juju status exposed
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ports).
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Access
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======
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Note that you will need to login to one of the service units supporting the
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ceph charm to generate some access credentials::
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juju ssh ceph/0 \
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'sudo radosgw-admin user create --uid="ubuntu" --display-name="Ubuntu Ceph"'
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For security reasons the ceph-radosgw charm is not set up with appropriate
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permissions to administer the ceph cluster.
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Keystone Integration
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====================
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Ceph >= 0.55 integrates with Openstack Keystone for authentication of Swift requests.
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This is enabled by relating the ceph-radosgw service with keystone::
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juju deploy keystone
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juju add-relation keystone ceph-radosgw
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If you try to relate the radosgw to keystone with an earlier version of ceph the hook
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will error out to let you know.
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Scale-out
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=========
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Its possible to scale-out the RADOS Gateway itself::
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juju add-unit -n 2 ceph-radosgw
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and then stick a HA loadbalancer on the front::
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juju deploy haproxy
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juju add-relation haproxy ceph-radosgw
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Should give you a bit more bang on the front end if you really need it.
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Network Space support
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=====================
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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.
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API endpoints can be bound to distinct network spaces supporting the network separation of public, internal and admin endpoints.
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To use this feature, use the --bind option when deploying the charm:
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juju deploy ceph-radosgw --bind "public=public-space internal=internal-space admin=admin-space"
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alternatively these can also be provided as part of a juju native bundle configuration:
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ceph-radosgw:
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charm: cs:xenial/ceph-radosgw
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num_units: 1
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bindings:
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public: public-space
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admin: admin-space
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internal: internal-space
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NOTE: Spaces must be configured in the underlying provider prior to attempting to use them.
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NOTE: Existing deployments using os-*-network configuration options will continue to function; these options are preferred over any network space binding provided if set.
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Contact Information
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===================
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Author: James Page <james.page@ubuntu.com>
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Report bugs at: http://bugs.launchpad.net/charms/+source/ceph-radosgw/+filebug
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Location: http://jujucharms.com/charms/ceph-radosgw
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Bootnotes
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=========
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The Ceph RADOS Gateway makes use of a multiverse package libapache2-mod-fastcgi.
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As such it will try to automatically enable the multiverse pocket in
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/etc/apt/sources.list. Note that there is noting 'wrong' with multiverse
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components - they typically have less liberal licensing policies or suchlike.
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