CentOS 7
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OpenStack Newton : Run Instances
2016/10/22
 
Create and Start Virtual Machine Instance.
[1] Create a flavor (cpu, memory, disk (and others) specification) and create an instance and boot it.
# create a flavor

[root@dlp ~(keystone)]#
openstack flavor create --id 0 --vcpus 1 --ram 2048 --disk 10 m1.small

+----------------------------+----------+
| Field                      | Value    |
+----------------------------+----------+
| OS-FLV-DISABLED:disabled   | False    |
| OS-FLV-EXT-DATA:ephemeral  | 0        |
| disk                       | 10       |
| id                         | 0        |
| name                       | m1.small |
| os-flavor-access:is_public | True     |
| properties                 |          |
| ram                        | 2048     |
| rxtx_factor                | 1.0      |
| swap                       |          |
| vcpus                      | 1        |
+----------------------------+----------+

[root@dlp ~(keystone)]#
openstack flavor list

+----+----------+------+------+-----------+-------+-----------+
| ID | Name     |  RAM | Disk | Ephemeral | VCPUs | Is Public |
+----+----------+------+------+-----------+-------+-----------+
| 0  | m1.small | 2048 |   10 |         0 |     1 | True      |
+----+----------+------+------+-----------+-------+-----------+

# show the list of images

[root@dlp ~(keystone)]#
openstack image list

+--------------------------------------+---------+--------+
| ID                                   | Name    | Status |
+--------------------------------------+---------+--------+
| 255cfee5-ba9d-4f8d-8ef7-c65dbe65b8ee | CentOS7 | active |
+--------------------------------------+---------+--------+

# create and boot an instance

[root@dlp ~(keystone)]#
openstack server create --flavor m1.small --image CentOS7 --security-group default CentOS_7

+--------------------------------------+------------------------------------------------+
| Field                                | Value                                          |
+--------------------------------------+------------------------------------------------+
| OS-DCF:diskConfig                    | MANUAL                                         |
| OS-EXT-AZ:availability_zone          |                                                |
| OS-EXT-SRV-ATTR:host                 | None                                           |
| OS-EXT-SRV-ATTR:hypervisor_hostname  | None                                           |
| OS-EXT-SRV-ATTR:instance_name        |                                                |
| OS-EXT-STS:power_state               | NOSTATE                                        |
| OS-EXT-STS:task_state                | scheduling                                     |
| OS-EXT-STS:vm_state                  | building                                       |
| OS-SRV-USG:launched_at               | None                                           |
| OS-SRV-USG:terminated_at             | None                                           |
| accessIPv4                           |                                                |
| accessIPv6                           |                                                |
| addresses                            |                                                |
| adminPass                            | mu5N6CUkNXBg                                   |
| config_drive                         |                                                |
| created                              | 2016-10-22T14:02:39Z                           |
| flavor                               | m1.small (0)                                   |
| hostId                               |                                                |
| id                                   | 4b80dce6-f3eb-4591-b924-37c719042c4e           |
| image                                | CentOS7 (255cfee5-ba9d-4f8d-8ef7-c65dbe65b8ee) |
| key_name                             | None                                           |
| name                                 | CentOS_7                                       |
| os-extended-volumes:volumes_attached | []                                             |
| progress                             | 0                                              |
| project_id                           | 150e205a8791426e8028a94699fb8848               |
| properties                           |                                                |
| security_groups                      | [{u'name': u'default'}]                        |
| status                               | BUILD                                          |
| updated                              | 2016-10-22T14:02:40Z                           |
| user_id                              | 0a28ee66b05f4c7b9709f316c5109e0a               |
+--------------------------------------+------------------------------------------------+

# show status

[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+--------+--------------------+------------+
| ID        | Name     | Status | Networks           | Image Name |
+-----------+----------+--------+--------------------+------------+
| 4b80dce6- | CentOS_7 | BUILD  | network01=10.1.0.2 | CentOS7    |
+-----------+----------+--------+--------------------+------------+
[2] Login to the Instance just booted.
# after few minutes later, the Status turns "ACTIVE" like follows

[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+--------+--------------------+------------+
| ID        | Name     | Status | Networks           | Image Name |
+-----------+----------+--------+--------------------+------------+
| 4b80dce6- | CentOS_7 | ACTIVE | network01=10.1.0.2 | CentOS7    |
+-----------+----------+--------+--------------------+------------+

# it's OK if ICMP answer replys like follows

[root@dlp ~(keystone)]#
ping 10.1.0.2

PING 10.1.0.2 (10.1.0.2) 56(84) bytes of data.
64 bytes from 10.1.0.2: icmp_seq=1 ttl=64 time=1.28 ms
64 bytes from 10.1.0.2: icmp_seq=2 ttl=64 time=0.264 ms

--- 10.1.0.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.264/0.776/1.288/0.512 ms

# login with SSH

[root@dlp ~(keystone)]#
ssh 10.1.0.2

The authenticity of host '10.1.0.2 (10.1.0.2)' can't be established.
ECDSA key fingerprint is 11:e4:76:69:b9:e4:a1:63:79:be:d3:77:8d:76:63:51.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.1.0.2' (ECDSA) to the list of known hosts.
root@10.1.0.2's password:   # root password
Last login: Sat Oct 22 16:10:57 2016
[root@centos-7 ~]#    
# just logined normally

[3] If you using a virtual machine image provided from internet and do not know any password for login, Add SSH key-pair to login like follows.
# create key-pair

[root@dlp ~(keystone)]#
ssh-keygen -q -N ""

# add public key

[root@dlp ~(keystone)]#
openstack keypair create --public-key ~/.ssh/id_rsa.pub mykey

+-------------+-------------------------------------------------+
| Field       | Value                                           |
+-------------+-------------------------------------------------+
| fingerprint | ba:3b:60:3d:d5:d2:92:0c:6f:d6:1d:85:d8:ff:83:a7 |
| name        | mykey                                           |
| user_id     | 0a28ee66b05f4c7b9709f316c5109e0a                |
+-------------+-------------------------------------------------+

[root@dlp ~(keystone)]#
openstack keypair list

+-------+-------------------------------------------------+
| Name  | Fingerprint                                     |
+-------+-------------------------------------------------+
| mykey | ba:3b:60:3d:d5:d2:92:0c:6f:d6:1d:85:d8:ff:83:a7 |
+-------+-------------------------------------------------+

# run instance with key

[root@dlp ~(keystone)]#
openstack server create --flavor m1.small --image CentOS7 --security-group default --key-name mykey CentOS_7
[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+--------+--------------------+------------+
| ID        | Name     | Status | Networks           | Image Name |
+-----------+----------+--------+--------------------+------------+
| ade80a2d- | CentOS_7 | ACTIVE | network01=10.1.0.3 | CentOS7    |
+-----------+----------+--------+--------------------+------------+

# login with key

[root@dlp ~(keystone)]#
ssh -i mykey 10.1.0.3
[root@centos-7 ~]#    
# just logined

[4] If you'd like to stop an instance, it's also possible to control with openstack command like follows.
[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+--------+--------------------+------------+
| ID        | Name     | Status | Networks           | Image Name |
+-----------+----------+--------+--------------------+------------+
| 4b80dce6- | CentOS_7 | ACTIVE | network01=10.1.0.2 | CentOS7    |
+-----------+----------+--------+--------------------+------------+

# stop instance

[root@dlp ~(keystone)]#
openstack server stop CentOS_7

[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+---------+--------------------+------------+
| ID        | Name     | Status  | Networks           | Image Name |
+-----------+----------+---------+--------------------+------------+
| 4b80dce6- | CentOS_7 | SHUTOFF | network01=10.1.0.2 | CentOS7    |
+-----------+----------+---------+--------------------+------------+

# start instance

[root@dlp ~(keystone)]#
openstack server start CentOS_7

[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+--------+--------------------+------------+
| ID        | Name     | Status | Networks           | Image Name |
+-----------+----------+--------+--------------------+------------+
| 4b80dce6- | CentOS_7 | ACTIVE | network01=10.1.0.2 | CentOS7    |
+-----------+----------+--------+--------------------+------------+
[5] It's possible to access with Web browser to get VNC console.
[root@dlp ~(keystone)]#
openstack server list

+-----------+----------+--------+--------------------+------------+
| ID        | Name     | Status | Networks           | Image Name |
+-----------+----------+--------+--------------------+------------+
| 4b80dce6- | CentOS_7 | ACTIVE | network01=10.1.0.2 | CentOS7    |
+-----------+----------+--------+--------------------+------------+

[root@dlp ~(keystone)]#
openstack console url show CentOS_7

+-------+---------------------------------------------------------------------------------+
| Field | Value                                                                           |
+-------+---------------------------------------------------------------------------------+
| type  | novnc                                                                           |
| url   | http://10.0.0.30:6080/vnc_auto.html?token=d6723851-dfde-4c8a-9b9f-0aa5c2b6916b |
+-------+---------------------------------------------------------------------------------+
[6] Access to the URL which was displayed by the command above.
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