Install Glance Service - Openstack Installation : Part 3

Shan February 22, 2016

Install Glance Service - Openstack Installation : Part 3

This post will help you to Install Glance Service as part of our OpenStack Deployment.

If you are interested in learning, Request you to go through the below recommended tutorial.




In the previous post, we have covered the topic, how to install and configure the Keystone Identity service which was also a stage involved in the Openstack Deployment.

Stages involved in the Openstack deployments are,
1. Enable Repositories on node1 and node2
2. Install Openstack Liberty Packages on node1 and node2.
3. Install and Configure MariaDB(MySQL) Database on node1 and node2.
4. Install and Configure RabbitMQ Message service on node1.
5. Install and Configure keystone for Identity service on node1.
6. Install Glance for Image service on node1.
7. Install Nova Computing on node1 and node2.
8. Install Neutron Networking on node1 and node2.
8a. Install Openstack Neutron Component on Controller Node
8b. Install Openstack Neutron Component on Compute Node
9. Install Openstack Horizon for dashboard on node1


Continue with previous post install and configure the Keystone Identity service, we will explain you how to install and configure the Glance component for the Image service on node1.


Basically Glance provides Openstack image service which allow us to store and retrieve virtual machine images. be default image service directory is /var/lib/glance/images/. Server should have enough space to hold the images on your disk.




How to Install Glance Service - Openstack Installation : Part 3





Lab Setup for this Openstack Deployment:

Server Names : node1 and node2.

OS :  CentOS 7.2 - 64 Bit

Enabled Internet connection.


Prerequisites:

1. Make sure each hosts are reachable. I make an entries in hosts file.

2. Verify the internet connection, because we use puclic repos to install these glance component.

3. Take a backup or snapshot at different stages to restore if needed.

4. Stop the firewall to avoid issues during the installations (systemctl stop firewalld ; systemctl disable firewalld)

Refer this link to enable and Install Openstack Liberty Repositories

Install and Configure Glance for Image Service on Node1



Create Glance Database to store its data

[root@node1 ~]# mysql -u root -p
Enter password:

Create tables for Glance database.

MariaDB [(none)]> CREATE DATABASE glance;
MariaDB [(none)]> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'node1'
IDENTIFIED BY 'redhat';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%'
IDENTIFIED BY 'redhat';

Replace 'node1' with your controller node name and replace 'redhat' with your Glance password you wish to set.


ALSO WATCH THIS TUTORIAL VIDEO FREE ON OUR YOUTUBE CHANNEL


Install Glance Component packages.


To enable the repos for this installation, please refer the links,



[root@node1 ~]# yum -y install openstack-glance python-glance python-glanceclient

Configure Glance Image service.


Do the following changes on two files /etc/glance/glance-api.conf and /etc/glance/glance-registry.conf


Change the connection parameter under [database] section.

[database]
connection = mysql://glance:redhat@node1/glance

Replace 'redhat' with your glance password which we have set during the Glance database creation and replace 'node1' with your server name.


Change the following parameters under [keystone_authtoken] and [paste_deploy]

[keystone_authtoken]
auth_uri = http://node1:5000
auth_url = http://node1:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = glance
password = redhat

[paste_deploy]
flavor = keystone

Replace 'redhat' with the password you chose for the glance user in the Identity service and replace 'node1' with your server name.




Change the following parameters under [DEFAULT] section.

[DEFAULT]
notification_driver = noop

Change the following parameters under [glance_store] section only on /etc/glance/glance-api.conf. This change not required in the file  /etc/glance/glance-registry.conf

[glance_store]
default_store = file
filesystem_store_datadir = /var/lib/glance/images/

Once all changes done, populate the Image service database

[root@node1 ~]# su -s /bin/sh -c "glance-manage db_sync" glance

Ignore if you get handler error as "No handlers could be found for logger "oslo_config.cfg""

Start and Enable the glance service.


[root@node1 ~]# systemctl enable openstack-glance-api
openstack-glance-registry
[root@node1 ~]# systemctl start openstack-glance-api
openstack-glance-registry

Source the admin-openrc.sh to load the environment to gain access. If you have created before, if not create a client authentication file for the “admin” project to gain the access. Replace *ADMIN_PASS* with your own:
# vim /root/admin-openrc.sh
export OS_PROJECT_DOMAIN_ID=default
export OS_USER_DOMAIN_ID=default
export OS_PROJECT_NAME=admin
export OS_TENANT_NAME=admin
export OS_USERNAME=admin
export OS_PASSWORD=*ADMIN_PASS*
export OS_AUTH_URL=http://controller:35357/v3
export OS_IDENTITY_API_VERSION=3


Configure the Image service client to use API version 2.0

[root@node1 ~]# echo "export OS_IMAGE_API_VERSION=2"
| tee -a admin-openrc.sh demo-openrc.sh
[root@node1 ~]# source admin-openrc.sh

Create the glance user and add roles.



[root@node1 ~]# openstack user create --domain default --password-prompt glance
User Password:
Repeat User Password:
+-----------+----------------------------------+
| Field     | Value                            |
+-----------+----------------------------------+
| domain_id | default                          |
| enabled   | True                             |
| id        | 1c2ca5c95a1741bf9a895454bc9f7054 |
| name      | glance                           |
+-----------+----------------------------------+
[root@node1 ~]#

Add the admin role to the glance user and service project:


[root@node1 ~]# openstack role add --project service --user glance admin

Create the glance service entity:


[root@node1 ~]# openstack service create --name glance
--description "OpenStack Image service" image
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Image service          |
| enabled     | True                             |
| id          | 1d9cbeb55a7e43f1a6bd4f2444c81036 |
| name        | glance                           |
| type        | image                            |
+-------------+----------------------------------+

Create the Image service API endpoints:



Replace 'node1' with your node name.

[root@node1 ~]# openstack endpoint create --region RegionOne
image public http://node1:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | e2bf6a6205504a34954a5f32bff7c426 |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 1d9cbeb55a7e43f1a6bd4f2444c81036 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://node1:9292                |
+--------------+----------------------------------+

[root@node1 ~]# openstack endpoint create --region RegionOne
image internal http://node1:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | fc5e7154ef9f4d329468a5edb46f40ea |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 1d9cbeb55a7e43f1a6bd4f2444c81036 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://node1:9292                |
+--------------+----------------------------------+

[root@node1 ~]# openstack endpoint create --region RegionOne
image admin http://node1:9292
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | bce3447ff4ec48b794690d721f248caf |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 1d9cbeb55a7e43f1a6bd4f2444c81036 |
| service_name | glance                           |
| service_type | image                            |
| url          | http://node1:9292                |
+--------------+----------------------------------+

Testing the Configurations:


To test the configuration, download ISO image and Upload the image to the Image service using the QCOW2 disk format, bare container format, and public visibility so all projects can access it. here we use only the Cirror ISO image for testing purpose which is smaller in size.

[root@node1 ~]# wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img
[root@node1 ~]# glance image-create --name "cirros"
--file cirros-0.3.4-x86_64-disk.img
--disk-format qcow2 --container-format bare
--visibility public --progress

List out the uploaded images.

[root@node1 ~]# glance image-list
+--------------------------------------+--------+
| ID                                   | Name   |
+--------------------------------------+--------+
| cbc9dcb0-9574-4f30-bcba-03e48ebd3ef3 | cirros |
+--------------------------------------+--------+

Installation and Configuration of Glance Openstack component for Image service on node1 is completed.



So far, We are done with the below topics in the Openstack Deployment. Refer the links,
1. Enable Repositories on node1 and node2
2. Install Openstack Liberty Packages on node1 and node2.
3. Install and Configure MariaDB(MySQL) Database on node1 and node2.
4. Install and Configure RabbitMQ Message service on node1.
5. Install and Configure keystone for Identity service on node1.
6. Install Glance for Image service on node1.
7. Install Nova Computing on node1 and node2.
8. Install Neutron Networking on node1 and node2.
8a. Install Openstack Neutron Component on Controller Node
8b. Install Openstack Neutron Component on Compute Node
9. Install Openstack Horizon for dashboard on node1

Also download 100% free eBooks related to OpenStack Cloud.
1. A Brief Look at OpenStack
2. OpenStack Cloud Computing Cookbook
3. Concepts of Cloud Computing in simple terms

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