CentOS 8
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OpenStack Ussuri : Configure Glance
2020/06/08
 
Install and Configure OpenStack Image Service (Glance).
This example is based on the environment like follows.
        eth0|10.0.0.30 
+-----------+-----------+
|    [ Control Node ]   |
|                       |
|  MariaDB    RabbitMQ  |
|  Memcached  httpd     |
|  Keystone   Glance    |
+-----------------------+

[1] Add users and others for Glance in Keystone.
# create [glance] user in [service] project

[root@dlp ~(keystone)]#
openstack user create --domain default --project service --password servicepassword glance

+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| default_project_id  | 03fc3b5cc0434f748ec562dd74866396 |
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 6b1e9d597b824e60841b5133d83b0a8b |
| name                | glance                           |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

# add [glance] user in [admin] role

[root@dlp ~(keystone)]#
openstack role add --project service --user glance admin
# create service entry for [glance]

[root@dlp ~(keystone)]#
openstack service create --name glance --description "OpenStack Image service" image

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Image service          |
| enabled     | True                             |
| id          | 636d060b5f0246d0ad160a97c787362a |
| name        | glance                           |
| type        | image                            |
+-------------+----------------------------------+

# define Glance API Host

[root@dlp ~(keystone)]#
export controller=10.0.0.30
# create endpoint for [glance] (public)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne image public http://$controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 71f848a04a264e8daf6a49a64174e137 |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 636d060b5f0246d0ad160a97c787362a |
| service_name | glance                           |
| service_type | image                            |
| url          | http://10.0.0.30:9292            |
+--------------+----------------------------------+

# create endpoint for [glance] (internal)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne image internal http://$controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 4cad548fa2e94f1792c6b2a43f51749e |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 636d060b5f0246d0ad160a97c787362a |
| service_name | glance                           |
| service_type | image                            |
| url          | http://10.0.0.30:9292            |
+--------------+----------------------------------+

# create endpoint for [glance] (admin)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne image admin http://$controller:9292

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 49797b15df354fd7a6b44ef746b83638 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 636d060b5f0246d0ad160a97c787362a |
| service_name | glance                           |
| service_type | image                            |
| url          | http://10.0.0.30:9292            |
+--------------+----------------------------------+
[2] Add a User and Database on MariaDB for Glance.
[root@dlp ~(keystone)]#
mysql -u root -p

Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 16
Server version: 10.3.17-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> create database glance; 
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> grant all privileges on glance.* to glance@'localhost' identified by 'password'; 
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> grant all privileges on glance.* to glance@'%' identified by 'password'; 
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> flush privileges; 
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> exit
Bye
[3] Install Glance.
# install from Ussuri, EPEL, PowerTools

[root@dlp ~(keystone)]#
dnf --enablerepo=centos-openstack-ussuri,PowerTools,epel -y install openstack-glance
[4] Configure Glance.
[root@dlp ~(keystone)]#
mv /etc/glance/glance-api.conf /etc/glance/glance-api.conf.org

[root@dlp ~(keystone)]#
vi /etc/glance/glance-api.conf
# create new

[DEFAULT]
bind_host = 0.0.0.0

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

[database]
# MariaDB connection info
connection = mysql+pymysql://glance:password@10.0.0.30/glance

# keystone auth info
[keystone_authtoken]
www_authenticate_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:5000
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = glance
password = servicepassword

[paste_deploy]
flavor = keystone

[root@dlp ~(keystone)]#
chmod 640 /etc/glance/glance-api.conf

[root@dlp ~(keystone)]#
chown root:glance /etc/glance/glance-api.conf
[root@dlp ~(keystone)]#
su -s /bin/bash glance -c "glance-manage db_sync"

[root@dlp ~(keystone)]#
systemctl enable --now openstack-glance-api

[5] If SELinux is enabled, change boolean settings.
[root@dlp ~(keystone)]#
setsebool -P glance_api_can_network on

[root@dlp ~(keystone)]#
vi glanceapi.te
# create new

module glanceapi 1.0;

require {
        type glance_api_t;
        type httpd_config_t;
        type iscsid_exec_t;
        class dir search;
        class file { getattr open read };
}

#============= glance_api_t ==============
allow glance_api_t httpd_config_t:dir search;
allow glance_api_t iscsid_exec_t:file { getattr open read };

[root@dlp ~(keystone)]#
checkmodule -m -M -o glanceapi.mod glanceapi.te

[root@dlp ~(keystone)]#
semodule_package --outfile glanceapi.pp --module glanceapi.mod

[root@dlp ~(keystone)]#
semodule -i glanceapi.pp

[6] If Firewalld is running, allow ports for services.
[root@dlp ~(keystone)]#
firewall-cmd --add-port=9292/tcp --permanent

success
[root@dlp ~(keystone)]#
firewall-cmd --reload

success
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