Glance

仮想マシンイメージの管理88

コンポーネント

glance-api

glance-registry

Database

Storage repository for image files

Metadata definition service

install

データベースの作成

code:sql

CREATE DATABASE glance;

権限付与

code:sql

GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' IDENTIFIED BY 'GLANCE_DBPASS';

code:sql

GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' IDENTIFIED BY 'GLANCE_DBPASS';

サービス認証情報の作成

ユーザ作成

code:shell

# openstack user create --domain default --password-prompt glance

glance ユーザとサービスプロジェクトに管理者ロールを追加

code:shell

# openstack role add --project service --user glance admin

glance サービスエンティティ

code:shell

# openstack service create --name glance \

--description "OpenStack Image" image

Image サービス API エンドポイントの作成

code:shell

パッケージのインストール

code:shell

# yum install openstack-glance

code:shell

# diff -u /etc/glance/glance-api.conf.org /etc/glance/glance-api.conf

--- /etc/glance/glance-api.conf.org 2020-05-13 19:46:21.000000000 +0900

+++ /etc/glance/glance-api.conf 2020-07-31 22:04:29.256794546 +0900

@@ -2076,7 +2076,7 @@

-#connection = <None>

+connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance

# The SQLAlchemy connection string to use to connect to the slave database.

# (string value)

@@ -3469,7 +3469,7 @@

#

# This option is scheduled for removal in the U development

# cycle.

-#stores = file,http

+stores = file,http

# DEPRECATED:

# The default scheme to use for storing images.

@@ -3522,7 +3522,7 @@

#

# This option is scheduled for removal in the U development

# cycle.

-#default_store = file

+default_store = file

#

# Information to match when looking for cinder in the service catalog.

@@ -3843,7 +3843,7 @@

#

# (string value)

-#filesystem_store_datadir = /var/lib/glance/images

+filesystem_store_datadir = /var/lib/glance/images

#

# List of directories and their priorities to which the filesystem

@@ -5044,7 +5044,8 @@

# endpoint the service user utilizes for validating tokens, because normal end

# users may not be able to reach that endpoint. (string value)

-#www_authenticate_uri = <None>

# DEPRECATED: Complete "public" Identity API endpoint. This endpoint should not

# be an "admin" endpoint, as it should be accessible by all end users.

@@ -5105,7 +5106,7 @@

# Optionally specify a list of memcached server(s) to use for caching. If left

# undefined, tokens will instead be cached in-process. (list value)

-#memcached_servers = <None>

+memcached_servers = controller:11211

# In order to prevent excessive effort spent validating tokens, the middleware

# caches previously-seen tokens for a configurable duration (in seconds). Set to

@@ -5185,7 +5186,12 @@

# Authentication type to load (string value)

-#auth_type = <None>

+auth_type = password

+project_domain_name = Default

+user_domain_name = Default

+project_name = service

+username = glance

+password = glance

# Config Section from which to load plugin specific options (string value)

@@ -5703,7 +5709,7 @@

# This option has a sample default set, which means that

# its actual default value may vary from the one documented

# below.

-#flavor = keystone

+flavor = keystone

#

# Name of the paste configuration file.

Image データベース作成

code:shell

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

自動起動設定等々

code:shell

# systemctl enable openstack-glance-api.service

# systemctl start openstack-glance-api.service

動作確認

イメージのダウンロード

code:shell

QCOW2 ディスクフォーマット、ベアコンテナフォーマットを使用して Image サービスに画像をアップロード

code:shell

# glance image-create --name "cirros" \

--file cirros-0.4.0-x86_64-disk.img \

--disk-format qcow2 --container-format bare \

--visibility=public

確認

code:shell

# openstack image list

+--------------------------------------+--------+--------+

| ID | Name | Status |

+--------------------------------------+--------+--------+

| 1451dfe4-5719-48e6-afb8-7dc0f4bc7a1e | cirros | active |

+--------------------------------------+--------+--------+