`Home `_ OpenStack-Ansible Swift Configuring the service ======================= **Procedure 5.2. Updating the Object Storage configuration ``swift.yml`` file** #. Copy the ``/etc/openstack_deploy/conf.d/swift.yml.example`` file to ``/etc/openstack_deploy/conf.d/swift.yml``: .. code-block:: shell-session # cp /etc/openstack_deploy/conf.d/swift.yml.example \ /etc/openstack_deploy/conf.d/swift.yml #. Update the global override values: .. code-block:: yaml # global_overrides: # swift: # part_power: 8 # weight: 100 # min_part_hours: 1 # repl_number: 3 # storage_network: 'br-storage' # replication_network: 'br-repl' # drives: # - name: sdc # - name: sdd # - name: sde # - name: sdf # mount_point: /srv/node # account: # container: # storage_policies: # - policy: # name: gold # index: 0 # default: True # - policy: # name: silver # index: 1 # repl_number: 3 # deprecated: True # statsd_host: statsd.example.com # statsd_port: 8125 # statsd_metric_prefix: # statsd_default_sample_rate: 1.0 # statsd_sample_rate_factor: 1.0 ``part_power`` Set the partition power value based on the total amount of storage the entire ring uses. Multiply the maximum number of drives ever used with the swift installation by 100 and round that value up to the closest power of two value. For example, a maximum of six drives, times 100, equals 600. The nearest power of two above 600 is two to the power of nine, so the partition power is nine. The partition power cannot be changed after the swift rings are built. ``weight`` The default weight is 100. If the drives are different sizes, set the weight value to avoid uneven distribution of data. For example, a 1 TB disk would have a weight of 100, while a 2 TB drive would have a weight of 200. ``min_part_hours`` The default value is 1. Set the minimum partition hours to the amount of time to lock a partition's replicas after moving a partition. Moving multiple replicas at the same time makes data inaccessible. This value can be set separately in the swift, container, account, and policy sections with the value in lower sections superseding the value in the swift section. ``repl_number`` The default value is 3. Set the replication number to the number of replicas of each object. This value can be set separately in the swift, container, account, and policy sections with the value in the more granular sections superseding the value in the swift section. ``storage_network`` By default, the swift services listen on the default management IP. Optionally, specify the interface of the storage network. If the ``storage_network`` is not set, but the ``storage_ips`` per host are set (or the ``storage_ip`` is not on the ``storage_network`` interface) the proxy server is unable to connect to the storage services. ``replication_network`` Optionally, specify a dedicated replication network interface, so dedicated replication can be setup. If this value is not specified, no dedicated ``replication_network`` is set. Replication does not work properly if the ``repl_ip`` is not able to connect to other hosts ``repl_ip``. ``drives`` Set the default drives per host. This is useful when all hosts have the same drives. These can be overridden on a per host basis. ``mount_point`` Set the ``mount_point`` value to the location where the swift drives are mounted. For example, with a mount point of ``/srv/node`` and a drive of ``sdc``, a drive is mounted at ``/srv/node/sdc`` on the ``swift_host``. This can be overridden on a per-host basis. ``storage_policies`` Storage policies determine on which hardware data is stored, how the data is stored across that hardware, and in which region the data resides. Each storage policy must have an unique ``name`` and a unique ``index``. There must be a storage policy with an index of 0 in the ``swift.yml`` file to use any legacy containers created before storage policies were instituted. ``default`` Set the default value to ``yes`` for at least one policy. This is the default storage policy for any non-legacy containers that are created. ``deprecated`` Set the deprecated value to ``yes`` to turn off storage policies. For account and container rings, ``min_part_hours`` and ``repl_number`` are the only values that can be set. Setting them in this section overrides the defaults for the specific ring. ``statsd_host`` Swift supports sending extra metrics to a ``statsd`` host. This option sets the ``statsd`` host to receive ``statsd`` metrics. Specifying this here applies to all hosts in the cluster. If ``statsd_host`` is left blank or omitted, then ``statsd`` are disabled. All ``statsd`` settings can be overridden or you can specify deeper in the structure if you want to only catch ``statsdv`` metrics on certain hosts. ``statsd_port`` Optionally, use this to specify the ``statsd`` server's port you are sending metrics to. Defaults to 8125 of omitted. ``statsd_default_sample_rate`` and ``statsd_sample_rate_factor`` These ``statsd`` related options are more complex and are used to tune how many samples are sent to ``statsd``. Omit them unless you need to tweak these settings, if so first read: http://docs.openstack.org/developer/swift/admin_guide.html #. Update the swift proxy hosts values: .. code-block:: yaml # swift-proxy_hosts: # infra-node1: # ip: 192.0.2.1 # statsd_metric_prefix: proxy01 # infra-node2: # ip: 192.0.2.2 # statsd_metric_prefix: proxy02 # infra-node3: # ip: 192.0.2.3 # statsd_metric_prefix: proxy03 ``swift-proxy_hosts`` Set the ``IP`` address of the hosts so Ansible connects to to deploy the ``swift-proxy`` containers. The ``swift-proxy_hosts`` value matches the infra nodes. ``statsd_metric_prefix`` This metric is optional, and also only evaluated it you have defined ``statsd_host`` somewhere. It allows you define a prefix to add to all ``statsd`` metrics sent from this hose. If omitted, use the node name. #. Update the swift hosts values: .. code-block:: yaml # swift_hosts: # swift-node1: # ip: 192.0.2.4 # container_vars: # swift_vars: # zone: 0 # statsd_metric_prefix: node1 # swift-node2: # ip: 192.0.2.5 # container_vars: # swift_vars: # zone: 1 # statsd_metric_prefix: node2 # swift-node3: # ip: 192.0.2.6 # container_vars: # swift_vars: # zone: 2 # statsd_metric_prefix: node3 # swift-node4: # ip: 192.0.2.7 # container_vars: # swift_vars: # zone: 3 # swift-node5: # ip: 192.0.2.8 # container_vars: # swift_vars: # storage_ip: 198.51.100.8 # repl_ip: 203.0.113.8 # zone: 4 # region: 3 # weight: 200 # groups: # - account # - container # - silver # drives: # - name: sdb # weight: 75 # groups: # - gold # - name: sdc # - name: sdd # - name: sde # - name: sdf ``swift_hosts`` Specify the hosts to be used as the storage nodes. The ``ip`` is the address of the host to which Ansible connects. Set the name and IP address of each swift host. The ``swift_hosts`` section is not required. ``swift_vars`` Contains the swift host specific values. ``storage_ip`` and ``repl_ip`` Base these values on the IP addresses of the host's ``storage_network`` or ``replication_network``. For example, if the ``storage_network`` is ``br-storage`` and host1 has an IP address of 1.1.1.1 on ``br-storage``, then this is the IP address in use for ``storage_ip``. If only the ``storage_ip`` is specified, then the ``repl_ip`` defaults to the ``storage_ip``. If neither are specified, both default to the host IP address. ``zone`` The default is 0. Optionally, set the swift zone for the ring. ``region`` Optionally, set the swift region for the ring. ``weight`` The default weight is 100. If the drives are different sizes, set the weight value to avoid uneven distribution of data. This value can be specified on a host or drive basis (if specified at both, the drive setting takes precedence). ``groups`` Set the groups to list the rings to which a host's drive belongs. This can be set on a per drive basis which overrides the host setting. ``drives`` Set the names of the drives on the swift host. Specify at least one name. ``statsd_metric_prefix`` This metric is optional, and only evaluates if ``statsd_host`` is defined somewhere. This allows you to define a prefix to add to all ``statsd`` metrics sent from the hose. If omitted, use the node name. In the following example, ``swift-node5`` shows values in the ``swift_hosts`` section that override the global values. Groups are set, which overrides the global settings for drive ``sdb``. The weight is overridden for the host and specifically adjusted for drive ``sdb``. .. code-block:: yaml # swift-node5: # ip: 192.0.2.8 # container_vars: # swift_vars: # storage_ip: 198.51.100.8 # repl_ip: 203.0.113.8 # zone: 4 # region: 3 # weight: 200 # groups: # - account # - container # - silver # drives: # - name: sdb # weight: 75 # groups: # - gold # - name: sdc # - name: sdd # - name: sde # - name: sdf #. Ensure the ``swift.yml`` is in the ``/etc/openstack_deploy/conf.d/`` folder.