CentOS Stream 9
Sponsored Link

OpenStack Yoga : How to use Swift
2022/06/10
 
This section shows how to use Swift Storage from Clients.
This example is based on the emvironment like follows.
------------+-----------------------------+---------------+---
            |                             |               |
        eth0|10.0.0.30                eth0|10.0.0.50      |
+-----------+-----------+     +-----------+-----------+   |
|   [ dlp.srv.world ]   |     | [ network.srv.world ] |   |
|     (Control Node)    |     |      (Proxy Node)     |   |
|                       |     |                       |   |
|  MariaDB    RabbitMQ  |     |      Swift Proxy      |   |
|  Memcached  httpd     |     |                       |   |
|  Keystone             |     |                       |   |
+-----------------------+     +-----------------------+   |
                                                          |
------------+-----------------------------+---------------+-------------+-----------
        eth0|10.0.0.71                eth0|10.0.0.72                eth0|10.0.0.73
+-----------+-----------+     +-----------+-----------+     +-----------+-----------+
|  [snode01.srv.world]  |     |  [snode02.srv.world]  |     |  [snode03.srv.world]  |
|    (Storage Node#1)   |     |    (Storage Node#2)   |     |    (Storage Node#3)   |
|                       |     |                       |     |                       |
|     Swift-Account     |     |     Swift-Account     |     |     Swift-Account     |
|    Swift-Container    |     |    Swift-Container    |     |    Swift-Container    |
|     Swift-Object      |     |     Swift-Object      |     |     Swift-Object      |
+-----------------------+     +-----------------------+     +-----------------------+

[1] Add a user for using Swift on Keystone Control Node.
By the way, if you'd like to use Swift Quickly, it's unnecessary to add a new user, it's posibble to use with existing admin or swift user on Keystone.
# create [swiftservice] project

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

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | Swift Service Project            |
| domain_id   | default                          |
| enabled     | True                             |
| id          | 27d0d388a81c4534aaf8babdc4687fe8 |
| is_domain   | False                            |
| name        | swiftservice                     |
| options     | {}                               |
| parent_id   | default                          |
| tags        | []                               |
+-------------+----------------------------------+

# create [SwiftOperator] role

[root@dlp ~(keystone)]#
openstack role create SwiftOperator

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | None                             |
| domain_id   | None                             |
| id          | 34b35842cbab4b979c58a427f216529c |
| name        | SwiftOperator                    |
| options     | {}                               |
+-------------+----------------------------------+

# add a user

[root@dlp ~(keystone)]#
openstack user create --domain default --project swiftservice --password userpassword swiftuser01

+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| default_project_id  | 27d0d388a81c4534aaf8babdc4687fe8 |
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 93b96ab9746d4f9a847bf2a75116c7a5 |
| name                | swiftuser01                      |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

# add the user to [SwiftOperator] role

[root@dlp ~(keystone)]#
openstack role add --project swiftservice --user swiftuser01 SwiftOperator
[2] Work on a Client Host from here and later.
Install Keystoneclient, Swiftclient on a Client Host first.
# install from Yoga, EPEL, CRB

[root@client ~]#
dnf --enablerepo=centos-openstack-yoga,epel,crb -y install python3-openstackclient python3-keystoneclient python3-swiftclient
[3] Login a an user and load environment variables. ( it's just the value for a user added in [1] )
[cent@client ~]$
vi ~/keystonerc_swift
export OS_PROJECT_DOMAIN_NAME=default
export OS_USER_DOMAIN_NAME=default
export OS_PROJECT_NAME=swiftservice
export OS_USERNAME=swiftuser01
export OS_PASSWORD=userpassword
export OS_AUTH_URL=https://dlp.srv.world:5000/v3
export OS_IDENTITY_API_VERSION=3
export PS1='[\u@\h \W(swift)]\$ '
[cent@client ~]$
chmod 600 ~/keystonerc_swift

[cent@client ~]$
source ~/keystonerc_swift

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

[cent@client ~(swift)]$
swift stat

               Account: AUTH_27d0d388a81c4534aaf8babdc4687fe8
            Containers: 0
               Objects: 0
                 Bytes: 0
          Content-Type: text/plain; charset=utf-8
           X-Timestamp: 1654840787.35768
       X-Put-Timestamp: 1654840787.35768
                  Vary: Accept
            X-Trans-Id: tx02c73fc43f9247fca8bbc-0062a2ddd3
X-Openstack-Request-Id: tx02c73fc43f9247fca8bbc-0062a2ddd3
[4] Create a Container for saving files.
[cent@client ~(swift)]$
openstack container create test-container

+---------------------------------------+----------------+------------------------------------+
| account                               | container      | x-trans-id                         |
+---------------------------------------+----------------+------------------------------------+
| AUTH_27d0d388a81c4534aaf8babdc4687fe8 | test-container | tx3252aee3be504fe2bc897-0062a2ddec |
+---------------------------------------+----------------+------------------------------------+

[cent@client ~(swift)]$
openstack container list

+----------------+
| Name           |
+----------------+
| test-container |
+----------------+
[5] Upload a file on localhost to the Container.
[cent@client ~(swift)]$
openstack object create test-container testfile.txt

+--------------+----------------+----------------------------------+
| object       | container      | etag                             |
+--------------+----------------+----------------------------------+
| testfile.txt | test-container | 821b66baba88c5c1da830ad7fdafdf79 |
+--------------+----------------+----------------------------------+

[cent@client ~(swift)]$
openstack object list test-container

+--------------+
| Name         |
+--------------+
| testfile.txt |
+--------------+
[6] Download a file from Swift Storage to localhost.
[cent@client ~(swift)]$
rm testfile.txt
[cent@client ~(swift)]$
openstack object save test-container testfile.txt

[cent@client ~(swift)]$
total 8
-rw-------. 1 cent cent 288 Jun 10 14:59 keystonerc_swift
-rw-r--r--. 1 cent cent 288 Jun 10 15:01 testfile.txt
[7] Delete a file on Swift Storage.
[cent@client ~(swift)]$
openstack object delete test-container testfile.txt

[cent@client ~(swift)]$
openstack object list test-container

# [testfile.txt] has been removed

[8] Delete a Container on Swift Storage.
[cent@client ~(swift)]$
openstack container delete test-container

[cent@client ~(swift)]$
openstack container list

# [test-container] has been removed
Matched Content