Tags:
, view all tags

Installazione e configurazione del servizio Image (Glance)


Installazione Glance

Server designato per l'installazione: hostname1.domain.

  • Installare Glance tramite il gestore di pacchetti yum :
    # yum install openstack-nova openstack-glance openstack-glance-doc openstack-nova-doc
    


Configurazione Glance

  • Rimuovere, se esiste, il file /var/lib/glance/glance.db (cioè il DB sqlite). Verrà utilizzato MySQL.

  • Collegarsi su MySQL da linea di comando lanciando mysql -u root -p e digitando la password dell'utente root.

  • Creare il DB glance:
    mysql> CREATE DATABASE glance;
    

  • Creare l'utente "glance" che ha completo accesso al DB "glance" appena creato.
    mysql> GRANT ALL ON glance.* TO 'glance'@'%' IDENTIFIED BY '<YOUR_GLANCEDB_PASSWORD>';
    
    Dove <YOUR_GLANCEDB_PASSWORD> è la password scelta per l'utente "glance" del DB.

  • Provare ad accedere a MySQL da locale con l'utente "glance" appena creato tramite il comando myslq -u glance -p digitando la password. Nel caso di accesso negato, accedere a MySQL da root ed eliminare l'utente anonimo con i seguenti comandi:
    mysql> DROP USER ''@'localhost';
    mysql> flush privileges;
    
    Questo problema è dovuto ad un bug di MySQL

Editare i file di configurazione di Glance

  • Modificare le seguenti righe nel file /etc/glance/glance-api-paste.ini :
    [filter:authtoken]
    admin_tenant_name = service
    admin_user = glance
    admin_password = <GLANCE_PASSWORD>
    
    Nota bene:
    • service è il tenant "service" creato durante la configurazione di Keystone
    • glance è l'utente del tenant "service" associato al servizio Glance
    • <GLANCE_PASSWORD> è la password scelta per l'utente "glance" creato nel tenant "service", non la password identificata da <YOUR_GLANCEDB_PASSWORD>

  • Aggiungere le seguenti righe in fondo al file /etc/glance/glance-api.conf :
    [paste_deploy]
    flavor = keystone
    

  • Riavviare il servizio openstack-glance-api per rendere effettive le precedenti modifiche:
    # service openstack-glance-api restart
    

  • Aggiungere le seguenti righe in fondo al file /etc/glance/glance-registry.conf :
    [paste_deploy]
    flavor = keystone
    
    Verificare che sql_connection punti al DB MySQL piuttosto che a sqlite:
    sql_connection = mysql://glance:<YOUR_GLANCEDB_PASSWORD>@localhost/glance
    
    Nota bene: inserendo esplicitamente l'hostname del serve al posto di localhost sono stati verificati problemi di connessione.

  • Modificare le seguenti righe nel file /etc/glance/glance-registry-paste.ini :
    [filter:authtoken]
    admin_tenant_name = service
    admin_user = glance
    admin_password = <GLANCE_PASSWORD>
    
    Verificare che la sezione pipeline:glance-registry contenga pipeline settato come segue:
    [pipeline:glance-registry]
    pipeline = authtoken auth-context context registryapp
    

  • Riavviare i servizi openstack-glance-registry e openstack-glance-api per rendere effettive le precedenti modifiche:
    # service openstack-glance-registry restart
    # service openstack-glance-api restart
    

  • Infine inizializzare il DB "glance":
    # glance-manage db_sync
    

  • Now you can populate or migrate the database # glance-manage db_sync

Troubleshooting

  • To begin troubleshooting, look at the logs in the /var/log/glance/registry.log or /var/log/glance/api.log
  • You can find the version of the installation by using the glance --version command. The version number 2012.1 corresponds with the Essex release.
  • Obtain a test image
# mkdir /tmp/images
# cd /tmp/images/
# wget http://smoser.brickies.net/ubuntu/ttylinux-uec/ttylinux-uec-amd64-12.1_2.6.35-22_1.tar.gz
# tar -zxvf ttylinux-uec-amd64-12.1_2.6.35-22_1.tar.gz

# glance -v -d --os_username=$OS_USERNAME --os_password=$OS_PASSWORD --os_tenant=$OS_TENANT_NAME --os_auth_url=$KEYSTONE5000 add name="tty-linux-kernel" disk_format=aki container_format=aki < ttylinux-uec-amd64-12.1_2.6.35-22_1-vmlinuz
==============================================================================================[100%] 8.36M/s, ETA  0h  0m  0s
Added new image with ID: 8393828d-b226-434c-b0ea-179674fa4329
Returned the following metadata for the new image:
                       checksum => 3ed2965d3f8d877a3ee3e061fd648e9a
               container_format => aki
                     created_at => 2012-08-29T14:15:57
                        deleted => False
                     deleted_at => None
                    disk_format => aki
                             id => 8393828d-b226-434c-b0ea-179674fa4329
                      is_public => False
                       min_disk => 0
                        min_ram => 0
                           name => tty-linux-kernel
                          owner => c10d9c9f296b47f8a1212dd7a98357e0
                     properties => {}
                      protected => False
                           size => 4404752
                         status => active
                     updated_at => 2012-08-29T14:15:57
Completed in 0.7154 sec.

# glance -v -d --os_username=$OS_USERNAME --os_password=$OS_PASSWORD --os_tenant=$OS_TENANT_NAME --os_auth_url=$KEYSTONE5000 add name="tty-linux-ramdisk" disk_format=ari container_format=ari < ttylinux-uec-amd64-12.1_2.6.35-22_1-loader
========================================================================================[100%] 934.475402K/s, ETA  0h  0m  0s
Added new image with ID: 3db3e2dc-9d2f-40ff-8519-af7d04f8146a
Returned the following metadata for the new image:
                       checksum => 644cf7d6d9e7b41d527e30e8e8c685a4
               container_format => ari
                     created_at => 2012-08-29T14:28:38
                        deleted => False
                     deleted_at => None
                    disk_format => ari
                             id => 3db3e2dc-9d2f-40ff-8519-af7d04f8146a
                      is_public => False
                       min_disk => 0
                        min_ram => 0
                           name => tty-linux-ramdisk
                          owner => c10d9c9f296b47f8a1212dd7a98357e0
                     properties => {}
                      protected => False
                           size => 96629
                         status => active
                     updated_at => 2012-08-29T14:28:39
Completed in 0.4333 sec.

# glance -v -d --os_username=$OS_USERNAME --os_password=$OS_PASSWORD --os_tenant=$OS_TENANT_NAME --os_auth_url=$KEYSTONE5000 add name="tty-linux" disk_format=ami container_format=ami kernel_id=8393828d-b226-434c-b0ea-179674fa4329 ramdisk_id=3db3e2dc-9d2f-40ff-8519-af7d04f8146a < ttylinux-uec-amd64-12.1_2.6.35-22_1.img
==============================================================================================[100%] 59.7M/s, ETA  0h  0m  0s
Added new image with ID: df3422c6-58f5-4d3d-8de2-b1b522ab4152
Returned the following metadata for the new image:
                       checksum => 10047a119149e08fb206eea89832eee0
               container_format => ami
                     created_at => 2012-08-29T14:32:05
                        deleted => False
                     deleted_at => None
                    disk_format => ami
                             id => df3422c6-58f5-4d3d-8de2-b1b522ab4152
                      is_public => False
                       min_disk => 0
                        min_ram => 0
                           name => tty-linux
                          owner => c10d9c9f296b47f8a1212dd7a98357e0
                     properties => {u'kernel_id': u'8393828d-b226-434c-b0ea-179674fa4329', u'ramdisk_id': u'3db3e2dc-9d2f-40ff-8519-af7d04f8146a'}
                      protected => False
                           size => 25165824
                         status => active
                     updated_at => 2012-08-29T14:32:05
Completed in 0.5622 sec.

# glance index
ID                                   Name                           Disk Format          Container Format     Size
------------------------------------ ------------------------------ -------------------- -------------------- --------------
df3422c6-58f5-4d3d-8de2-b1b522ab4152 tty-linux                      ami                  ami                        25165824
3db3e2dc-9d2f-40ff-8519-af7d04f8146a tty-linux-ramdisk              ari                  ari                           96629
8393828d-b226-434c-b0ea-179674fa4329 tty-linux-kernel               aki                  aki                         4404752

-- PaoloVeronesi - 2012-08-30

Edit | Attach | PDF | History: r6 < r5 < r4 < r3 < r2 | Backlinks | Raw View | More topic actions...
Topic revision: r4 - 2012-10-10 - EnricoFattibene
 
  • Edit
  • Attach
This site is powered by the TWiki collaboration platformCopyright © 2008-2020 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback