Openstack Newton Install Guide - Glance

Glance(Image service)

The Image service (glance) enables users to discover, register, and retrieve virtual machine images. It offers a REST API that enables you to query virtual machine image metadata and retrieve an actual image.

Image service overview

The OpenStack Image service includes the following components:

glance-api

　　Accepts Image API calls for image discovery, retrieval, and storage.

glance-registry

　　Stores, processes, and retrieves metadata about images. Metadata includes items such as size and type.

Database

　　Stores image metadata and you can choose your database depending on your preference. Most deployments use MySQL or SQLite.

Storage repository for image files

　　Various repository types are supported including normal file systems, Object Storage, RADOS block devices, VMware datastore, and HTTP. Note that some repositories will only support read-only usage.

Metadata definition service

　　A common API for vendors, admins, services, and users to meaningfully define their own custom metadata. This metadata can be used on different types of resources like images, artifacts, volumes, flavors, and aggregates. A definition includes the new property’s key, description, constraints, and the resource types which it can be associated with.

Install and configure

Prerequisites

Before you install and configure the Image service, you must create a database, service credentials, and API endpoints.

1、create the database

$ mysql -u root -p
mysql> CREATE DATABASE glance;
mysql> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' \
  IDENTIFIED BY 'GLANCE_DBPASS';
mysql> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' \
  IDENTIFIED BY 'GLANCE_DBPASS';

2、create the service credentials

$ source admin-openrc.sh
$ openstack user create --domain default --password-prompt glance

User Password:
Repeat User Password:
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 3f4e777c4062483ab8d9edd7dff829df |
| name                | glance                           |
| password_expires_at | None                             |
+---------------------+----------------------------------+

$ openstack role add --project service --user glance admin
$ openstack service create --name glance \
  --description "OpenStack Image" image

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Image                  |
| enabled     | True                             |
| id          | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| name        | glance                           |
| type        | image                            |
+-------------+----------------------------------+

3、Create the Image service API endpoints:

$ openstack endpoint create --region RegionOne \
  image public http://controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 340be3625e9b4239a6415d034e98aace |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne \
  image internal http://controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | a6e4b153c2ae4c919eccfdbb7dceb5d2 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne \
  image admin http://controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 0c37ed58103f4300a84ff125a539032d |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 8c2c7f1b9b5049ea9e63757b5533e6d2 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://controller:9292           |
+--------------+----------------------------------+

Install and configure components

1、Install the packages:

# apt install glance

2、Edit the /etc/glance/glance-api.conf file and complete the following actions:

　　In the [database] section, configure database access:

[database]
...
connection = mysql+pymysql://glance:GLANCE_DBPASS@192.168.20.180/glance

　　In the [keystone_authtoken] and [paste_deploy] sections, configure Identity service access:

[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = GLANCE_PASS

[paste_deploy]
...
flavor = keystone

　　In the [glance_store] section, configure the local file system store and location of image files:

[glance_store]
...
stores = file,http
default_store = file
filesystem_store_datadir = /var/lib/glance/images/

3、Edit the /etc/glance/glance-registry.conf file and complete the following actions:

　　In the [database] section, configure database access:

[database]
...
connection = mysql+pymysql://glance:GLANCE_DBPASS@192.168.20.180/glance

　　In the [keystone_authtoken] and [paste_deploy] sections, configure Identity service access:

[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = glance
password = GLANCE_PASS

[paste_deploy]
...
flavor = keystone

4、Populate the Image service database:

# su -s /bin/sh -c "glance-manage db_sync" glance

5、Restart the Image services:

# service glance-registry restart
# service glance-api restart

Verify operation

note：Perform these commands on the controller node.

$ source admin-openrc.sh
$ wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img
$ openstack image create "cirros" \
  --file cirros-0.3.4-x86_64-disk.img \
  --disk-format qcow2 --container-format bare \
  --public

+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| checksum         | 133eae9fb1c98f45894a4e60d8736619                     |
| container_format | bare                                                 |
| created_at       | 2015-03-26T16:52:10Z                                 |
| disk_format      | qcow2                                                |
| file             | /v2/images/cc5c6982-4910-471e-b864-1098015901b5/file |
| id               | cc5c6982-4910-471e-b864-1098015901b5                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | cirros                                               |
| owner            | ae7a98326b9c455588edd2656d723b9d                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 13200896                                             |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2015-03-26T16:52:10Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+

$ openstack image list

+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| 38047887-61a7-41ea-9b49-27987d5e8bb9 | cirros | active |
+--------------------------------------+--------+--------+

也可以使用glance命令集：

glance image-list

glance image-create --name "cirros" --file cirros.img --disk-format qcow2 --container-format bare --progress

至此完成Glance所有安装...

posted @ 2017-04-14 16:15 Vincen_shen 阅读(127) 评论(0) 收藏举报

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