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OpenStack Liberty : How to use Swift
2015/12/28
 
This section shows how to use Swift Storage from Clients.
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  |  10.0.0.50|  [ 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 project

root@dlp ~(keystone)#
openstack project create --description "Swift Service Project" swiftservice 

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | Swift Service Project            |
| domain_id   | default                          |
| enabled     | True                             |
| id          | 24554327ada74091982f74a9c5eaf28f |
| is_domain   | False                            |
| name        | swiftservice                     |
| parent_id   | None                             |
+-------------+----------------------------------+
# add swiftoperator role

root@dlp ~(keystone)#
openstack role create swiftoperator 

+-------+----------------------------------+
| Field | Value                            |
+-------+----------------------------------+
| id    | ad83900213b54f3898d5f5f720362a5a |
| name  | swiftoperator                    |
+-------+----------------------------------+
# add a user

root@dlp ~(keystone)#
openstack user create --domain default --project swiftservice --password userpassword user01 

+--------------------+----------------------------------+
| Field              | Value                            |
+--------------------+----------------------------------+
| default_project_id | 24554327ada74091982f74a9c5eaf28f |
| domain_id          | default                          |
| enabled            | True                             |
| id                 | d1776f0d3d1d4e678bf3076a7cb81684 |
| name               | user01                           |
+--------------------+----------------------------------+
# add the user in swiftoperator role

root@dlp ~(keystone)#
openstack role add --project swiftservice --user user01 swiftoperator
[2] Work on a Client from here and later.
Install Keystoneclient, Swiftclient on a Client first.
root@client:~#
apt-get -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_PROJECT_DOMAIN_ID=default
export OS_USER_DOMAIN_ID=default
export OS_PROJECT_NAME=swiftservice
export OS_TENANT_NAME=swiftservice
export OS_USERNAME=user01
export OS_PASSWORD=userpassword
export OS_AUTH_URL=http://10.0.0.30:35357/v3
export OS_IDENTITY_API_VERSION=3
export OS_AUTH_VERSION=3
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
# display status (it's not need to care the Warning below)

root@client ~(swift)#
swift stat 

/usr/lib/python2.7/site-packages/keystoneclient/service_catalog.py:196: UserWarning: 
Providing attr without filter_value to get_urls() is deprecated as of the 1.7.0 release 
and may be removed in the 2.0.0 release. Either both should be provided or neither should be provided.
  'Providing attr without filter_value to get_urls() is '

        Account: AUTH_24554327ada74091982f74a9c5eaf28f
     Containers: 0
        Objects: 0
          Bytes: 0
X-Put-Timestamp: 1451760358.74970
    X-Timestamp: 1451760358.74970
     X-Trans-Id: txd37c7e5818a9415fbd79d-0056881ae6
   Content-Type: text/plain; charset=utf-8
[4] Create a Container for saving files.
By the way, the same Warings are displayed every time on swift command, if you feel troublesome, add " 2>/dev/null" to the tail of every command to redirect.
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 on local

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

test.txt [auth 0.243s, headers 0.497s, total 0.497s, 0.000 MB/s]
root@client ~(swift)#
ll 

total 12
-rw-------  1 root root 335 Nov 18 23:03 keystonerc_swift
-rw-r--r--  1 root root  10 Nov 18 23:05 test.txt
[7] Delete 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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