CentOS 6
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OpenStack Havana - インスタンスを起動する
2013/10/22
 
仮想マシンインスタンスを起動してみます。
[1] まずは、仮想マシンインスタンスが内部で利用するネットワークを作成しておきます。
# nova-manage network create --label (任意の名前) --dns1 (参照するDNS) --fixed_range_v4=(内部ネットワークの範囲)

[root@dlp ~(keystone)]#
nova-manage network create --label network01 --dns1 10.0.0.10 --fixed_range_v4=10.1.0.0/24

[root@dlp ~(keystone)]#
nova-manage network list

id   IPv4           IPv6   start address   DNS1        DNS2    VlanID   project   uuid
1    10.1.0.0/24    None   10.1.0.2        10.0.0.10   None    None     None      a02b7b6d-1fb1-
[2] 起動した仮想マシンインスタンスにSSHで接続できるように、デフォルトセキュリティグループにポート許可の設定をしておきます。
# SSH 許可

[root@dlp ~(keystone)]#
nova secgroup-add-rule default tcp 22 22 0.0.0.0/0

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| tcp         | 22        | 22      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+

# ICMP 許可

[root@dlp ~(keystone)]#
nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| icmp        | -1        | -1      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+

[root@dlp ~(keystone)]#
nova secgroup-list-rules default

+-------------+-----------+---------+-----------+--------------+
| IP Protocol | From Port | To Port | IP Range  | Source Group |
+-------------+-----------+---------+-----------+--------------+
| tcp         | 22        | 22      | 0.0.0.0/0 |              |
| icmp        | -1        | -1      | 0.0.0.0/0 |              |
+-------------+-----------+---------+-----------+--------------+
[3] 仮想マシンインスタンスに割り当てるメモリ容量やストレージ容量等々を指定して (flavor)、 インスタンスを作成して起動します。
# デフォルトの flavor 一覧

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

+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name      | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| 1  | m1.tiny   | 512       | 1    | 0         |      | 1     | 1.0         | True      |
| 2  | m1.small  | 2048      | 20   | 0         |      | 1     | 1.0         | True      |
| 3  | m1.medium | 4096      | 40   | 0         |      | 2     | 1.0         | True      |
| 4  | m1.large  | 8192      | 80   | 0         |      | 4     | 1.0         | True      |
| 5  | m1.xlarge | 16384     | 160  | 0         |      | 8     | 1.0         | True      |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+

# 登録されているイメージ

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

+--------------------------------------+---------+--------+--------+
| ID                                   | Name    | Status | Server |
+--------------------------------------+---------+--------+--------+
| 46042f47-c307-4fce-af0d-a1b2c14d6d78 | CentOS6 | ACTIVE |        |
+--------------------------------------+---------+--------+--------+

# インスタンス作成・起動

[root@dlp ~(keystone)]#
nova boot --flavor 2 --image CentOS6 --security_group default CentOS_64

+--------------------------------------+--------------------------------------+
| Property                             | Value                                |
+--------------------------------------+--------------------------------------+
| OS-EXT-STS:task_state                | scheduling                           |
| image                                | CentOS6                              |
| OS-EXT-STS:vm_state                  | building                             |
| OS-EXT-SRV-ATTR:instance_name        | instance-00000003                    |
| OS-SRV-USG:launched_at               | None                                 |
| flavor                               | m1.small                             |
| id                                   | 081bba5e-0a88-4ae5-9757-645f682d172b |
| security_groups                      | [{u'name': u'default'}]              |
| user_id                              | 279ade4f97014020b0e7855f2f72e40f     |
| OS-DCF:diskConfig                    | MANUAL                               |
| accessIPv4                           |                                      |
| accessIPv6                           |                                      |
| progress                             | 0                                    |
| OS-EXT-STS:power_state               | 0                                    |
| OS-EXT-AZ:availability_zone          | nova                                 |
| config_drive                         |                                      |
| status                               | BUILD                                |
| updated                              | 2013-10-22T13:55:47Z                 |
| hostId                               |                                      |
| OS-EXT-SRV-ATTR:host                 | None                                 |
| OS-SRV-USG:terminated_at             | None                                 |
| key_name                             | None                                 |
| OS-EXT-SRV-ATTR:hypervisor_hostname  | None                                 |
| name                                 | CentOS_64                            |
| adminPass                            | sC68kbDrrCgE                         |
| tenant_id                            | 97be94660c2043e58fee407bc9cde0d5     |
| created                              | 2013-10-22T13:55:47Z                 |
| os-extended-volumes:volumes_attached | []                                   |
| metadata                             | {}                                   |
+--------------------------------------+--------------------------------------+

# 動作確認 (起動直後しばらくは「BUILD」ステータスとなっている)

[root@dlp ~(keystone)]#
nova list

+------------+-----------+--------+------------+-------------+--------------------+
| ID         | Name      | Status | Task State | Power State | Networks           |
+------------+-----------+--------+------------+-------------+--------------------+
| 081bba5e-0 | CentOS_64 | BUILD  | spawning   | NOSTATE     | network01=10.1.0.2 |
+------------+-----------+--------+------------+-------------+--------------------+
[4] 起動した仮想マシンインスタンスにログインできるか確認してみます。
# 起動後しばらくすると以下のように「ACTIVE」ステータスとなる

[root@dlp ~(keystone)]#
nova list

+------------+-----------+--------+------------+-------------+--------------------+
| ID         | Name      | Status | Task State | Power State | Networks           |
+------------+-----------+--------+------------+-------------+--------------------+
| 081bba5e-0 | CentOS_64 | ACTIVE | None       | Running     | network01=10.1.0.2 |
+------------+-----------+--------+------------+-------------+--------------------+

# 以下のように応答が返ってくればOK

[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=0.278 ms
64 bytes from 10.1.0.2: icmp_seq=2 ttl=64 time=0.433 ms
^C
--- 10.1.0.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1652ms
rtt min/avg/max/mdev = 0.278/0.355/0.433/0.079 ms

# SSH でログイン

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

The authenticity of host '10.1.0.2 (10.1.0.2)' can't be established.
RSA key fingerprint is xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:6b:9e:a6.
Are you sure you want to continue connecting (yes/no)?
yes

Warning: Permanently added '10.1.0.2' (RSA) to the list of known hosts.
root@10.1.0.2's password:
# インストール時に設定した root パスワード

Last login: Tue Oct 22 12:42:21 2013
[root@centos-64 ~]#
# ログインできた

[5] 一旦作成して起動した仮想マシンインスタンスを停止する場合は、 仮想マシンインスタンス内から shutdown コマンドを打てばもちろん停止できますが、 以下のように nova コマンドでも制御できます。
[root@dlp ~(keystone)]#
nova list

+------------+-----------+--------+------------+-------------+--------------------+
| ID         | Name      | Status | Task State | Power State | Networks           |
+------------+-----------+--------+------------+-------------+--------------------+
| 081bba5e-0 | CentOS_64 | ACTIVE | None       | Running     | network01=10.1.0.2 |
+------------+-----------+--------+------------+-------------+--------------------+

# インスタンス停止

[root@dlp ~(keystone)]#
nova stop CentOS_64

[root@dlp ~(keystone)]#
nova list

+------------+-----------+---------+------------+-------------+--------------------+
| ID         | Name      | Status  | Task State | Power State | Networks           |
+------------+-----------+---------+------------+-------------+--------------------+
| 081bba5e-0 | CentOS_64 | SHUTOFF | None       | Shutdown    | network01=10.1.0.2 |
+------------+-----------+---------+------------+-------------+--------------------+

# インスタンスを再度起動する

[root@dlp ~(keystone)]#
nova start CentOS_64

[root@dlp ~(keystone)]#
nova list

+------------+-----------+--------+------------+-------------+--------------------+
| ID         | Name      | Status | Task State | Power State | Networks           |
+------------+-----------+--------+------------+-------------+--------------------+
| 081bba5e-0 | CentOS_64 | ACTIVE | None       | Running     | network01=10.1.0.2 |
+------------+-----------+--------+------------+-------------+--------------------+
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