6. Extension d'OpenStack

Ajout d'un noeud de calcul

1. Préalable : script de nettoyage

Avant tout chose, il faut remettre le lab en l'état avec le script de nettoyage

2. Arrêt de la topologie

Arrêt des noeuds VirtualBox

vboxmanage controlvm 'controller' poweroff
vboxmanage controlvm 'compute1' poweroff

Vérification

vboxmanage list runningvms

Arrêt des noeuds KVM

virsh shutdown compute1
virsh shutdown controller

Il est même préférable de les arrêter proprement.

Vérification

virsh list --all
 Id    Name                           State
----------------------------------------------------
 -     compute1                       shut off
 -     compute2                       shut off

3. Clonage de compute1 en compute2

Clonage avec Virtualbox

vboxmanage clonevm "compute1" --name "compute2" --register
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
Machine has been successfully cloned as "compute2"

Vérification

vboxmanage list vms
"controller" {23767382-d461-4814-9df3-7bdfe1736d5d}
"compute1" {438befcf-0ff7-45f1-92f6-dc41571035a9}
"compute2" {22165656-5b6a-4040-9072-6a29e20b002d}

Modification du port d'accès

vboxmanage modifyvm "compute2" --natpf1 delete ssh
vboxmanage modifyvm "compute2" --natpf1 ssh,tcp,127.0.0.1,2233,,22

Clonage avec KVM

virt-clone --original 'compute1' --name 'compute2' --auto-clone
Allocating 'compute1-sda-clone'                                 | 9.8 GB  00:00:18
Allocating 'compute1-sdb-clone'                                 | 125 GB  00:00:00

Clone 'compute2' created successfully.

Vérification

virsh list --all
 Id    Name                           State
----------------------------------------------------
 -     compute1                       shut off
 -     compute2                       shut off
 -     controller                     shut off

4. Configuration du second noeud de calcul

Démarrage de compute2 avec Virtualbox

vboxmanage startvm "compute2" --type headless

Connexion à compute2

ssh osbash@localhost -p 2233

Démarrage de compute2 avec KVM

virsh start compute2

Vérification

 virsh list --all
 Id    Name                           State
----------------------------------------------------
 9     compute2                       running
 -     compute1                       shut off
 -     controller                     shut off

Après quelques instants, on obtient l'adresse IPv4 du noeud :

virsh net-dhcp-leases default
 Expiry Time          MAC address        Protocol  IP address                Hostname        Client ID or DUID
-------------------------------------------------------------------------------------------------------------------
 2019-03-10 11:40:43  52:54:00:f3:f7:0f  ipv4      192.168.122.221/24        compute1        -

Connexion à compute2

ssh osbash@192.168.122.221

Fichiers à modifier

  • /etc/hosts
  • /etc/hostname
  • /etc/network/interfaces
sudo su
sed -i 's/compute1-lo/compute2-lo/g' /etc/hosts
echo -e "\n# compute2\n10.0.0.32       compute2" >> /etc/hosts
echo "compute2" > /etc/hostname
sed -i 's/31/32/g' /etc/network/interfaces

Redémarrage du noeud compute2

sudo shutdown -r now

Vérification

stack@stacktrain1:~$ ssh osbash@localhost -p2233
osbash@localhost s password:
Welcome to Ubuntu 16.04.6 LTS (GNU/Linux 4.4.0-142-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage
New release '18.04.2 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Mon Mar  4 06:51:23 2019 from 10.0.2.2
osbash@compute2:~$

5. Configuration de controller et compute1

Démarrage de controller et compute1 avec virtualbox

vboxmanage startvm "controller" --type headless
Waiting for VM "controller" to power on...
VM "controller" has been successfully started.

vboxmanage startvm "compute1" --type headless
Waiting for VM "compute1" to power on...
VM "compute1" has been successfully started.

vboxmanage list runningvms
"controller" {23767382-d461-4814-9df3-7bdfe1736d5d}
"compute1" {438befcf-0ff7-45f1-92f6-dc41571035a9}
"compute2" {22165656-5b6a-4040-9072-6a29e20b002d}

Démarrage de controller et compute1 avec KVM

virsh start compute1
virsh start controller

Vérification

virsh list --all
 Id    Name                           State
----------------------------------------------------
 9     compute2                       running
 10    compute1                       running
 11    controller                     running

virsh net-dhcp-leases default
 Expiry Time          MAC address        Protocol  IP address                Hostname        Client ID or DUID
-------------------------------------------------------------------------------------------------------------------
 2019-03-10 11:45:53  52:54:00:45:dc:eb  ipv4      192.168.122.230/24        controller      -
 2019-03-10 11:45:46  52:54:00:a3:06:5b  ipv4      192.168.122.222/24        compute1        -
 2019-03-10 11:44:35  52:54:00:f3:f7:0f  ipv4      192.168.122.221/24        compute2        -

Configuration de controller et compute1

Ajouter une entrée pour "compute2" dans le fichier /etc/hosts de "controller" et dans celui de "compute1"

sudo su
echo -e "\n# compute2\n10.0.0.32       compute2" >> /etc/hosts

6. Modification du démon Nova sur compute2

stack@stacktrain1:~$ ssh osbash@localhost -p2233
osbash@localhost s password:
Welcome to Ubuntu 16.04.6 LTS (GNU/Linux 4.4.0-142-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage
New release '18.04.2 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Mon Mar  4 07:06:27 2019 from 10.0.2.2

sudo sed -i.bak 's/10.0.0.31/10.0.0.32/' /etc/nova/nova.conf

sudo diff /etc/nova/nova.conf.bak /etc/nova/nova.conf
4c4
< my_ip = 10.0.0.31
---
> my_ip = 10.0.0.32

sudo systemctl restart nova-compute
sudo systemctl status nova-compute | head -3

* nova-compute.service - OpenStack Compute
   Loaded: loaded (/lib/systemd/system/nova-compute.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2019-03-04 07:13:31 UTC; 5s ago

Vérification à partir de "controller"

osbash@controller:~$ . admin-openrc.sh
osbash@controller:~$ openstack compute service list
+----+------------------+------------+----------+---------+-------+----------------------------+
| ID | Binary           | Host       | Zone     | Status  | State | Updated At                 |
+----+------------------+------------+----------+---------+-------+----------------------------+
|  1 | nova-scheduler   | controller | internal | enabled | up    | 2019-03-10T10:51:18.000000 |
|  2 | nova-consoleauth | controller | internal | enabled | up    | 2019-03-10T10:51:23.000000 |
|  7 | nova-conductor   | controller | internal | enabled | up    | 2019-03-10T10:51:26.000000 |
|  8 | nova-compute     | compute1   | nova     | enabled | up    | 2019-03-10T10:51:25.000000 |
|  9 | nova-compute     | compute2   | nova     | enabled | up    | 2019-03-10T10:51:18.000000 |
+----+------------------+------------+----------+---------+-------+----------------------------+
osbash@controller:~$