Thực hiện trên 1 compute node bất kỳ Enable login nova user
usermod -s /bin/bash nova
Chuyển qua user nova
su nova
Gen key cho compute node
nova@compute1:/home/congnt$ ssh-keygen -t rsa -b 2048
Generating public/private rsa key pair.
Enter file in which to save the key (/var/lib/nova/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /var/lib/nova/.ssh/id_rsa.
Your public key has been saved in /var/lib/nova/.ssh/id_rsa.pub.
Tạo file authorized_keys
cp /var/lib/nova/.ssh/id_rsa.pub /var/lib/nova/.ssh/authorized_keys
Change quyền thư mục
chown -R nova. /var/lib/nova/.ssh/
Copy cả thư mục /var/lib/nova/.ssh/ sang Compute2, compute3
scp -rp /var/lib/nova/.ssh/ compute2:/var/lib/nova/.ssh/
scp -rp /var/lib/nova/.ssh/ compute3:/var/lib/nova/.ssh/
Change quyền
chown -R nova. /var/lib/nova/.ssh/
Trong file /etc/libvirt/libvirtd.conf, tắt listen tls và bật listen tcp
listen_tls = 0
listen_tcp = 1
auth_tcp = "none"
Trong file /etc/default/libvirtd cấu hình listen tcp
libvirtd_opts=" -l"
Restart libvirt
service libvirtd restart
Show VM
root@controller1:~# openstack server show 79bb21fd-8147-457f-922a-c21708b46799
+-------------------------------------+----------------------------------------------------------+
| Field | Value |
+-------------------------------------+----------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | compute2 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | compute2 |
| OS-EXT-SRV-ATTR:instance_name | instance-00000048 |
| OS-EXT-STS:power_state | Running |
| OS-EXT-STS:task_state | None |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2018-10-04T09:20:27.000000 |
| OS-SRV-USG:terminated_at | None |
| accessIPv4 | |
| accessIPv6 | |
| addresses | selfservice=172.16.1.10 |
| config_drive | |
| created | 2018-10-04T09:20:14Z |
| flavor | 1c_1g (42042581-b3e7-48fa-b814-08dcd72a0e78) |
| hostId | 31f88791f8e6510fcb2f94bf6a1834d7de76a99466a98898676ad750 |
| id | 79bb21fd-8147-457f-922a-c21708b46799 |
| image | |
| key_name | None |
| name | instance1 |
| progress | 0 |
| project_id | a5b1924d0f9743dabceea2627378bd91 |
| properties | |
| security_groups | name='default' |
| status | ACTIVE |
| updated | 2018-10-04T10:37:16Z |
| user_id | 00ada8da9f374ed7b0fa0655116b3b99 |
| volumes_attached | id='bbaa504f-7fed-4ef4-a05b-aa30c480dbbb' |
+-------------------------------------+----------------------------------------------------------+
Live Migate sang compute3
openstack server migrate --live compute3 79bb21fd-8147-457f-922a-c21708b46799
Show lại VM thấy VM đang ở compute3
root@controller1:~# openstack server show 79bb21fd-8147-457f-922a-c21708b46799
+-------------------------------------+----------------------------------------------------------+
| Field | Value |
+-------------------------------------+----------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | compute3 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | compute3 |
| OS-EXT-SRV-ATTR:instance_name | instance-00000048 |
| OS-EXT-STS:power_state | Running |
| OS-EXT-STS:task_state | None |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2018-10-04T09:20:27.000000 |
| OS-SRV-USG:terminated_at | None |
| accessIPv4 | |
| accessIPv6 | |
| addresses | selfservice=172.16.1.10 |
| config_drive | |
| created | 2018-10-04T09:20:14Z |
| flavor | 1c_1g (42042581-b3e7-48fa-b814-08dcd72a0e78) |
| hostId | 3e5a0dc5a725d4db4a6eedaa95d5e86340ed7a83f7ee7e4d1f7e319b |
| id | 79bb21fd-8147-457f-922a-c21708b46799 |
| image | |
| key_name | None |
| name | instance1 |
| progress | 0 |
| project_id | a5b1924d0f9743dabceea2627378bd91 |
| properties | |
| security_groups | name='default' |
| status | ACTIVE |
| updated | 2018-10-04T10:43:57Z |
| user_id | 00ada8da9f374ed7b0fa0655116b3b99 |
| volumes_attached | id='bbaa504f-7fed-4ef4-a05b-aa30c480dbbb' |
+-------------------------------------+----------------------------------------------------------+
Cold Migrate
openstack server migrate 79bb21fd-8147-457f-922a-c21708b46799
Khi show VM thấy ở trạng thái VERIFY_RESIZE ta sử dụng lệnh sau để confirm
openstack server resize --confirm 79bb21fd-8147-457f-922a-c21708b46799
Show lại VM thấy VM ở compute 1
root@controller1:~# openstack server show 79bb21fd-8147-457f-922a-c21708b46799
+-------------------------------------+----------------------------------------------------------+
| Field | Value |
+-------------------------------------+----------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | compute1 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | compute1 |
| OS-EXT-SRV-ATTR:instance_name | instance-00000048 |
| OS-EXT-STS:power_state | Running |
| OS-EXT-STS:task_state | None |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2018-10-04T10:45:17.000000 |
| OS-SRV-USG:terminated_at | None |
| accessIPv4 | |
| accessIPv6 | |
| addresses | selfservice=172.16.1.10 |
| config_drive | |
| created | 2018-10-04T09:20:14Z |
| flavor | 1c_1g (42042581-b3e7-48fa-b814-08dcd72a0e78) |
| hostId | d202562755beb1c31029fa1c03e6864c9938d800d038994abc634e20 |
| id | 79bb21fd-8147-457f-922a-c21708b46799 |
| image | |
| key_name | None |
| name | instance1 |
| progress | 0 |
| project_id | a5b1924d0f9743dabceea2627378bd91 |
| properties | |
| security_groups | name='default' |
| status | ACTIVE |
| updated | 2018-10-04T10:46:43Z |
| user_id | 00ada8da9f374ed7b0fa0655116b3b99 |
| volumes_attached | id='bbaa504f-7fed-4ef4-a05b-aa30c480dbbb' |
+-------------------------------------+----------------------------------------------------------+