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OpenStack Icehouse : How to use Swift
2014/06/28
 
This section shows how to use Swift Storage from Clients.
This example shows to configure like the environment below. 
                                    |
     +------------------+           |           +-----------------+
     | [ Control Node ] |10.0.0.30  |  10.0.0.70|  [ Proxy Node ] |
     |     Keystone     |-----------+-----------|                 |
     +------------------+           |           +-----------------+            +-----------------+
                                    |                                 10.0.0.20|   [ ClientPC ]  |
        +---------------------------+--------------------------+---------------|                 |
        |                           |                          |               +-----------------+
        |10.0.0.71                  |10.0.0.72                 |10.0.0.73 
+-------+----------+       +--------+---------+       +--------+---------+
| [Storage Node#1] |       | [Storage Node#2] |       | [Storage Node#3] |
|                  |-------|                  |-------|                  |
+------------------+       +------------------+       +------------------+
[1] Add a user for using Swift on Keystone Control Node.
By the way, if you'd like to use Swift Quickly, it's unnecessarry to add a new user, it's posibble to use with existing admin or swift user on Keystone.
# add swiftservice tenant

[root@dlp ~(keystone)]#
keystone tenant-create --name swiftservice --description "Swift Users Tenant" --enabled true 

+-------------+----------------------------------+
|   Property  |              Value               |
+-------------+----------------------------------+
| description |        Swift Users Tenant        |
|   enabled   |               True               |
|      id     | c2641bc0911b45da94847d39ec9162ad |
|     name    |           swiftservice           |
+-------------+----------------------------------+
# add swiftoperator role

[root@dlp ~(keystone)]#
keystone role-create --name swiftoperator 

+----------+----------------------------------+
| Property |              Value               |
+----------+----------------------------------+
|    id    | ae90238094474365a37c98ce967cf059 |
|   name   |          swiftoperator           |
+----------+----------------------------------+
# add a user

[root@dlp ~(keystone)]#
keystone user-create --tenant swiftservice --name user01 --pass userpassword --enabled true 

+----------+----------------------------------+
| Property |              Value               |
+----------+----------------------------------+
|  email   |                                  |
| enabled  |               True               |
|    id    | 2d0ad7a14e7743bdbc933b561af7121b |
|   name   |              user01              |
| tenantId | c2641bc0911b45da94847d39ec9162ad |
| username |              user01              |
+----------+----------------------------------+
# add the user in swiftoperator role

[root@dlp ~(keystone)]#
keystone user-role-add --user user01 --tenant swiftservice --role swiftoperator

[2] Work on a Client from here and later.
Install Keystoneclient, Swiftclient on a Client first.
# install from RDO, EPEL

[root@client ~]#
yum --enablerepo=openstack-icehouse,epel -y install python-keystoneclient python-swiftclient
[3] Load environment variables first. ( it's just the value for a user added in [1] )
[root@client ~]#
vi ~/keystonerc_swift
export OS_USERNAME=user01
export OS_PASSWORD=userpassword
export OS_TENANT_NAME=swiftservice
export OS_AUTH_URL=http://10.0.0.30:35357/v2.0/
export PS1='[\u@\h \W(swift)]\$ '
[root@client ~]#
chmod 600 ~/keystonerc_swift

[root@client ~]#
source ~/keystonerc_swift

[root@client ~(swift)]#
echo "source ~/keystonerc_swift " >> ~/.bash_profile
# show status

[root@client ~(swift)]#
swift stat 

       Account: AUTH_c2641bc0911b45da94847d39ec9162ad
    Containers: 0
       Objects: 0
         Bytes: 0
  Content-Type: text/plain; charset=utf-8
   X-Timestamp: 1403960666.77571
    X-Trans-Id: tx2efcb33efa27469288f9c-0053aebd5a
X-Put-Timestamp: 1403960666.77571
[4] Create a Container for saving files.
[root@client ~(swift)]#
swift post test_container

[root@client ~(swift)]#
swift list

test_container
# just created
[5] Upload a file on local to the Container.
# upload test.txt

[root@client ~(swift)]#
swift upload test_container test.txt

test.txt
[root@client ~(swift)]#
swift list test_container

test.txt
# just uploaded
[6] Download a file from Swift Storage to local.
# remove a file

[root@client ~(swift)]#
rm test.txt
[root@client ~(swift)]#
swift download test_container test.txt

test.txt [auth 0.263s, headers 0.559s, total 0.559s, 0.000 MB/s]
[root@client ~(swift)]#
ll 

total 28
-rw-------. 1 root root 1047 May 20  2013 anaconda-ks.cfg
-rw-r--r--. 1 root root 9169 May 20  2013 install.log
-rw-r--r--. 1 root root 3161 May 20  2013 install.log.syslog
-rw-------  1 root root  175 Jun 28 22:04 keystonerc_swift
-rw-r--r--  1 root root   28 Jun 28 22:05 test.txt
[7] Delere a file on Swift Storage.
[root@client ~(swift)]#
swift delete test_container test.txt

test.txt
[root@client ~(swift)]#
swift list test_container

test2.txt
# test.txt is just deleted
[8] Delete a Container on Swift Storage.
[root@client ~(swift)]#
swift delete test_container

[root@client ~(swift)]#
swift list

 
# just deleted
 
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