This article will demonstrates that how to create the initial account, container, and object rings. These rings creates configuration files that each node uses to determine and deploy the storage architecture. The account server uses the account ring to maintain lists of containers. The container server uses the container ring to maintain lists of objects . The object server uses the object ring to maintain lists of object locations on local devices. For tutorial simplicity, we will deploy in one region and zone with 1024 maximum partitions, 3 replicas of each object, and 1 hour minimum time between moving a partition more than once. For Object Storage, a partition indicates a directory on a storage device rather than a conventional partition table.
NOTE: Here My storage node IP is 192.168.203.133.
Create the Account ring:
1.Login to the openstack controller node.
2.Navigate to /etc/swift directory.
root@OSCTRL-UA:~# cd /etc/swift/ root@OSCTRL-UA:/etc/swift# ls -lrt total 28 -rw-r--r-- 1 root root 24807 Oct 21 10:59 proxy-server.conf root@OSCTRL-UA:/etc/swift#
3.Create the base account.builder file.
root@OSCTRL-UA:/etc/swift# swift-ring-builder account.builder create 10 3 1 root@OSCTRL-UA:/etc/swift# ls -lrt total 36 -rw-r--r-- 1 root root 24807 Oct 21 10:59 proxy-server.conf drwxr-xr-x 2 root root 4096 Oct 22 06:38 backups -rw-r--r-- 1 root root 236 Oct 22 06:38 account.builder root@OSCTRL-UA:/etc/swift#
4. Add the storage node to the ring.
root@OSCTRL-UA:/etc/swift# swift-ring-builder account.builder add r1z1-192.168.203.133:6002/sdc1 100 Device d0r1z1-192.168.203.133:6002R192.168.203.133:6002/sdc1_"" with 100.0 weight got id 0 root@OSCTRL-UA:/etc/swift#
IP – Storage Node IP
Disk – Object storage Mount point disk
Weight – 100
5.Verify the rings contents.
root@OSCTRL-UA:/etc/swift# swift-ring-builder account.builder
account.builder, build version 1
1024 partitions, 3.000000 replicas, 1 regions, 1 zones, 1 devices, 100.00 balance
The minimum number of hours before a partition can be reassigned is 1
Devices: id region zone ip address port replication ip replication port name weight partitions balance meta
0 1 1 192.168.203.133 6002 192.168.203.133 6002 sdc1 100.00 0 -100.00
root@OSCTRL-UA:/etc/swift#
6.Re-Balance the account rings.
root@OSCTRL-UA:/etc/swift# swift-ring-builder account.builder rebalance Reassigned 1024 (100.00%) partitions. Balance is now 0.00. root@OSCTRL-UA:/etc/swift#
Create the Container ring:
1.Login to the controller node.
2. Navigate to the /etc/swift directory.
3.Create the base container ring.
root@OSCTRL-UA:/etc/swift# swift-ring-builder container.builder create 10 3 1 root@OSCTRL-UA:/etc/swift# ls -lrt total 52 -rw-r--r-- 1 root root 24807 Oct 21 10:59 proxy-server.conf -rw-r--r-- 1 root root 206 Oct 22 06:44 account.ring.gz -rw-r--r-- 1 root root 8700 Oct 22 06:44 account.builder -rw-r--r-- 1 root root 236 Oct 22 06:46 container.builder drwxr-xr-x 2 root root 4096 Oct 22 06:46 backups root@OSCTRL-UA:/etc/swift#
4.Add the storage node to the ring.
root@OSCTRL-UA:/etc/swift# swift-ring-builder container.builder add r1z1-192.168.203.133:6001/sdc1 100 Device d0r1z1-192.168.203.133:6001R192.168.203.133:6001/sdc1_"" with 100.0 weight got id 0 root@OSCTRL-UA:/etc/swift#
5.Verify the container ring contents.
root@OSCTRL-UA:/etc/swift# swift-ring-builder container.builder
container.builder, build version 1
1024 partitions, 3.000000 replicas, 1 regions, 1 zones, 1 devices, 100.00 balance
The minimum number of hours before a partition can be reassigned is 1
Devices: id region zone ip address port replication ip replication port name weight partitions balance meta
0 1 1 192.168.203.133 6001 192.168.203.133 6001 sdc1 100.00 0 -100.00
root@OSCTRL-UA:/etc/swift#
6.Re-Balance the container ring and verify it.
root@OSCTRL-UA:/etc/swift# swift-ring-builder container.builder rebalance
Reassigned 1024 (100.00%) partitions. Balance is now 0.00.
root@OSCTRL-UA:/etc/swift# swift-ring-builder container.builder
container.builder, build version 1
1024 partitions, 3.000000 replicas, 1 regions, 1 zones, 1 devices, 0.00 balance
The minimum number of hours before a partition can be reassigned is 1
Devices: id region zone ip address port replication ip replication port name weight partitions balance meta
0 1 1 192.168.203.133 6001 192.168.203.133 6001 sdc1 100.00 3072 0.00
root@OSCTRL-UA:/etc/swift#
Create the Object ring:
1. Login to the Controller Node.
2. Navigate to the /etc/swift directory.
3. Create the base object.builder file .
root@OSCTRL-UA:/etc/swift# swift-ring-builder object.builder create 10 3 1 root@OSCTRL-UA:/etc/swift# ls -lrt total 68 -rw-r--r-- 1 root root 24807 Oct 21 10:59 proxy-server.conf -rw-r--r-- 1 root root 206 Oct 22 06:44 account.ring.gz -rw-r--r-- 1 root root 8700 Oct 22 06:44 account.builder -rw-r--r-- 1 root root 208 Oct 22 06:48 container.ring.gz -rw-r--r-- 1 root root 8700 Oct 22 06:48 container.builder -rw-r--r-- 1 root root 236 Oct 22 06:50 object.builder drwxr-xr-x 2 root root 4096 Oct 22 06:50 backups root@OSCTRL-UA:/etc/swift#
4.Add the storage node to the object ring.
root@OSCTRL-UA:/etc/swift# swift-ring-builder object.builder add r1z1-192.168.203.133:6000/sdc1 100 Device d0r1z1-192.168.203.133:6000R192.168.203.133:6000/sdc1_"" with 100.0 weight got id 0 root@OSCTRL-UA:/etc/swift#
5. Verify the object ring contents.
root@OSCTRL-UA:/etc/swift# swift-ring-builder object.builder
object.builder, build version 1
1024 partitions, 3.000000 replicas, 1 regions, 1 zones, 1 devices, 100.00 balance
The minimum number of hours before a partition can be reassigned is 1
Devices: id region zone ip address port replication ip replication port name weight partitions balance meta
0 1 1 192.168.203.133 6000 192.168.203.133 6000 sdc1 100.00 0 -100.00
root@OSCTRL-UA:/etc/swift#
6. Re-Balance the Object ring and verify it.
root@OSCTRL-UA:/etc/swift# swift-ring-builder object.builder rebalance
Reassigned 1024 (100.00%) partitions. Balance is now 0.00.
root@OSCTRL-UA:/etc/swift# swift-ring-builder object.builder
object.builder, build version 1
1024 partitions, 3.000000 replicas, 1 regions, 1 zones, 1 devices, 0.00 balance
The minimum number of hours before a partition can be reassigned is 1
Devices: id region zone ip address port replication ip replication port name weight partitions balance meta
0 1 1 192.168.203.133 6000 192.168.203.133 6000 sdc1 100.00 3072 0.00
root@OSCTRL-UA:/etc/swift#
Distribute ring configuration files to the Storage Nodes:
root@OSCTRL-UA:/etc/swift# scp -r account.ring.gz container.ring.gz object.ring.gz root@192.168.203.133:/etc/swift/ account.ring.gz 100% 206 0.2KB/s 00:00 container.ring.gz 100% 208 0.2KB/s 00:00 object.ring.gz 100% 204 0.2KB/s 00:00 root@OSCTRL-UA:/etc/swift#
Configure the default storage Policy:
1. Login to the controller node.
2. Navigate to the /etc/swift directory
3. Download the sample swift configuration file from internet source.
root@OSCTRL-UA:/etc/swift# curl -o /etc/swift/swift.conf https://raw.githubusercontent.com/openstack/swift/stable/juno/etc/swift.conf-sample
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 4763 100 4763 0 0 1381 0 0:00:03 0:00:03 --:--:-- 1381
root@OSCTRL-UA:/etc/swift# ls -lrt /etc/swift/swift.conf
-rw-r--r-- 1 root root 4763 Oct 22 06:56 /etc/swift/swift.conf
root@OSCTRL-UA:/etc/swift#
4. Edit the /etc/swift/swift.conf file and update the following sections.
In the [swift-hash] section,
[swift-hash] swift_hash_path_suffix = swifthash123 swift_hash_path_prefix = swifthash123
Note: Keep this values secret and do not lose it.
In [storage-ploicy:0] section,
[storage-policy:0] name = Policy-0 default = yes
5. Copy the /etc/swift/swift.conf file to the storage nodes.
root@OSCTRL-UA:/etc/swift# scp -r /etc/swift/swift.conf root@192.168.203.133:/etc/swift/ swift.conf 100% 4771 4.7KB/s 00:00 root@OSCTRL-UA:/etc/swift#
6. Change the ownership of /etc/swift/swift.conf in storage node.
root@OSCTRL-UA:/etc/swift# ssh root@192.168.203.133 chown -R swift:swift /etc/swift root@OSCTRL-UA:/etc/swift# ssh root@192.168.203.133 ls -ld /etc/swift drwxr-xr-x 2 swift swift 4096 Oct 22 07:04 /etc/swift root@OSCTRL-UA:/etc/swift# ssh root@192.168.203.133 ls -lrt /etc/swift total 48 -rw-r--r-- 1 swift swift 6126 Oct 22 05:26 account-server.conf -rw-r--r-- 1 swift swift 6398 Oct 22 05:29 container-server.conf -rw-r--r-- 1 swift swift 10021 Oct 22 05:42 object-server.conf -rw-r--r-- 1 swift swift 204 Oct 22 06:54 object.ring.gz -rw-r--r-- 1 swift swift 208 Oct 22 06:54 container.ring.gz -rw-r--r-- 1 swift swift 206 Oct 22 06:54 account.ring.gz -rw-r--r-- 1 swift swift 4771 Oct 22 07:04 swift.conf root@OSCTRL-UA:/etc/swift#
7. Restart the proxy service and it’s dependence service.
root@OSCTRL-UA:/var/log# service memcached restart Restarting memcached: memcached. root@OSCTRL-UA:/var/log# service swift-proxy restart swift-proxy stop/waiting swift-proxy start/running root@OSCTRL-UA:/var/log#
8. Login to the Storage node and restart the swift services.
root@OSSTG-UA:/# swift-init all start container-updater running (21255 - /etc/swift/container-server.conf) container-updater already started... account-auditor running (21256 - /etc/swift/account-server.conf) account-auditor already started... object-replicator running (21257 - /etc/swift/object-server.conf) object-replicator already started... container-sync running (21258 - /etc/swift/container-server.conf) container-sync already started... container-replicator running (21259 - /etc/swift/container-server.conf) container-replicator already started... object-auditor running (21260 - /etc/swift/object-server.conf) object-auditor already started... Unable to locate config for object-expirer container-auditor running (21261 - /etc/swift/container-server.conf) container-auditor already started... container-server running (21262 - /etc/swift/container-server.conf) container-server already started... object-server running (21263 - /etc/swift/object-server.conf) object-server already started... account-reaper running (21264 - /etc/swift/account-server.conf) account-reaper already started... Unable to locate config for proxy-server account-replicator running (21265 - /etc/swift/account-server.conf) account-replicator already started... object-updater running (21268 - /etc/swift/object-server.conf) object-updater already started... Unable to locate config for container-reconciler account-server running (21269 - /etc/swift/account-server.conf) account-server already started... root@OSSTG-UA:/var/log#
Verify the Swift Object Storage Configuration:
1.Login to the controller node.
2.Source the tenant credentials for CLI.
root@OSCTRL-UA:~# cat lingesh.rc export OS_USERNAME=lingesh export OS_PASSWORD=ling123 export OS_TENANT_NAME=lingesh export OS_AUTH_URL=http://OSCTRL-UA:35357/v2.0 root@OSCTRL-UA:~# source lingesh.rc root@OSCTRL-UA:~#
3. Verify the swift service status.
root@OSCTRL-UA:~# swift stat
Account: AUTH_abe3af30f46b446fbae35a102457890c
Containers: 0
Objects: 0
Bytes: 0
Content-Type: text/plain; charset=utf-8
X-Timestamp: 1445479602.24665
X-Trans-Id: tx82cd48b76d954ff581b35-00562844b2
X-Put-Timestamp: 1445479602.24665
root@OSCTRL-UA:~#
4. Upload the file to swift storage.
root@OSCTRL-UA:~# swift upload lingesh.container lingesh.pem lingesh.pem root@OSCTRL-UA:~# swift list lingesh.container root@OSCTRL-UA:~#
Here we have uploaded lingesh.pem file to lingesh.container on swift storage service.
5. Let’s download the uploaded file. Here we are downloading the file from “lingesh.container” to current directory.
root@OSCTRL-UA:~# swift download lingesh.container lingesh.pem lingesh.pem [auth 0.172s, headers 0.194s, total 0.194s, 0.077 MB/s] root@OSCTRL-UA:~#
Awesome. It works.
Now your openstack environment has the Object storage service.
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