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OpenStack Yoga : Octavia 利用方法2022/06/02

 
OpenStack Load Balancing as a Service(Octavia)の利用方法です。
当例では以下のような環境を例に Octavia をインストールしています。
------------+-----------------------------+-----------------------------+------------
            |                             |                             |
        eth0|10.0.0.30                eth0|10.0.0.50                eth0|10.0.0.51
+-----------+-----------+     +-----------+-----------+     +-----------+-----------+
|   [ dlp.srv.world ]   |     | [ network.srv.world ] |     |  [ node01.srv.world ] |
|     (Control Node)    |     |     (Network Node)    |     |     (Compute Node)    |
|                       |     |                       |     |                       |
|  MariaDB    RabbitMQ  |     |      Open vSwitch     |     |        Libvirt        |
|  Memcached  httpd     |     |     Neutron Server    |     |      Nova Compute     |
|  Keystone   Glance    |     |      OVN-Northd       |     |      Open vSwitch     |
|  Nova API  Cinder API |     |     Cinder Volume     |     |   OVN Metadata Agent  |
|                       |     |    Octavia Services   |     |     OVN-Controller    |
+-----------------------+     +-----------------------+     +-----------------------+

[1] ロードバランサーインスタンスを作成します。デフォルトでは [admin] 権限のユーザーのみがインスタンス作成可能です。作業場所はどこでも良いですが当例では Control ノード上で行います。
[root@dlp ~(keystone)]#
openstack subnet list

+--------------------------------------+----------------+--------------------------------------+------------------+
| ID                                   | Name           | Network                              | Subnet           |
+--------------------------------------+----------------+--------------------------------------+------------------+
| 748c0a25-c6d8-48fd-829e-8b15783b7f8a | private-subnet | 0f0af4c7-f2d1-4c13-b30c-4619ff33db0c | 192.168.100.0/24 |
| e20328ce-a24a-4804-be39-88f18800526f | public-subnet  | 0c96d581-95f3-4e72-9626-d0a94407d0ec | 10.0.0.0/24      |
+--------------------------------------+----------------+--------------------------------------+------------------+

[root@dlp ~(keystone)]#
openstack loadbalancer create --name lb01 --vip-subnet-id private-subnet

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| admin_state_up      | True                                 |
| availability_zone   | None                                 |
| created_at          | 2022-06-02T00:39:34                  |
| description         |                                      |
| flavor_id           | None                                 |
| id                  | 7024faa2-4487-495d-a833-f78e26622ab0 |
| listeners           |                                      |
| name                | lb01                                 |
| operating_status    | OFFLINE                              |
| pools               |                                      |
| project_id          | 0609d3b3b398456187fb705ec9224c4a     |
| provider            | amphora                              |
| provisioning_status | PENDING_CREATE                       |
| updated_at          | None                                 |
| vip_address         | 192.168.100.23                       |
| vip_network_id      | 0f0af4c7-f2d1-4c13-b30c-4619ff33db0c |
| vip_port_id         | 70676600-fd2a-4c82-ad6d-c0aa5886da14 |
| vip_qos_policy_id   | None                                 |
| vip_subnet_id       | 748c0a25-c6d8-48fd-829e-8b15783b7f8a |
| tags                |                                      |
+---------------------+--------------------------------------+

# しばらく時間がたつと [ACTIVE] ステータスになり作成が完了する

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

+--------------------------------------+------+----------------------------------+----------------+---------------------+------------------+----------+
| id                                   | name | project_id                       | vip_address    | provisioning_status | operating_status | provider |
+--------------------------------------+------+----------------------------------+----------------+---------------------+------------------+----------+
| 7024faa2-4487-495d-a833-f78e26622ab0 | lb01 | 0609d3b3b398456187fb705ec9224c4a | 192.168.100.23 | ACTIVE              | OFFLINE          | amphora  |
+--------------------------------------+------+----------------------------------+----------------+---------------------+------------------+----------+
[2] ロードバランサーインスタンスにリスナーやメンバーを追加して、バックエンドの Web サーバーが稼働する二つのインスタンスをラウンドロビンで負荷分散するよう設定します。
# TCP 80 をリスンするリスナーを作成

[root@dlp ~(keystone)]#
openstack loadbalancer listener create --name listener01 --protocol TCP --protocol-port 80 lb01

+-----------------------------+--------------------------------------+
| Field                       | Value                                |
+-----------------------------+--------------------------------------+
| admin_state_up              | True                                 |
| connection_limit            | -1                                   |
| created_at                  | 2022-06-02T00:42:54                  |
| default_pool_id             | None                                 |
| default_tls_container_ref   | None                                 |
| description                 |                                      |
| id                          | e2631ced-b3fa-4226-8457-469bb3084842 |
| insert_headers              | None                                 |
| l7policies                  |                                      |
| loadbalancers               | 7024faa2-4487-495d-a833-f78e26622ab0 |
| name                        | listener01                           |
| operating_status            | OFFLINE                              |
| project_id                  | 0609d3b3b398456187fb705ec9224c4a     |
| protocol                    | TCP                                  |
| protocol_port               | 80                                   |
| provisioning_status         | PENDING_CREATE                       |
| sni_container_refs          | []                                   |
| timeout_client_data         | 50000                                |
| timeout_member_connect      | 5000                                 |
| timeout_member_data         | 50000                                |
| timeout_tcp_inspect         | 0                                    |
| updated_at                  | None                                 |
| client_ca_tls_container_ref | None                                 |
| client_authentication       | NONE                                 |
| client_crl_container_ref    | None                                 |
| allowed_cidrs               | None                                 |
| tls_ciphers                 | None                                 |
| tls_versions                | None                                 |
| alpn_protocols              | None                                 |
| tags                        |                                      |
+-----------------------------+--------------------------------------+

# 作成したリスナーにプール作成

[root@dlp ~(keystone)]#
openstack loadbalancer pool create --name pool01 --lb-algorithm ROUND_ROBIN --listener listener01 --protocol TCP

+----------------------+--------------------------------------+
| Field                | Value                                |
+----------------------+--------------------------------------+
| admin_state_up       | True                                 |
| created_at           | 2022-06-02T00:46:13                  |
| description          |                                      |
| healthmonitor_id     |                                      |
| id                   | ca87815e-8cfe-48c6-9a07-8fc28c15ad5e |
| lb_algorithm         | ROUND_ROBIN                          |
| listeners            | e2631ced-b3fa-4226-8457-469bb3084842 |
| loadbalancers        | 7024faa2-4487-495d-a833-f78e26622ab0 |
| members              |                                      |
| name                 | pool01                               |
| operating_status     | OFFLINE                              |
| project_id           | 0609d3b3b398456187fb705ec9224c4a     |
| protocol             | TCP                                  |
| provisioning_status  | PENDING_CREATE                       |
| session_persistence  | None                                 |
| updated_at           | None                                 |
| tls_container_ref    | None                                 |
| ca_tls_container_ref | None                                 |
| crl_container_ref    | None                                 |
| tls_enabled          | False                                |
| tls_ciphers          | None                                 |
| tls_versions         | None                                 |
| tags                 |                                      |
| alpn_protocols       | None                                 |
+----------------------+--------------------------------------+

# Web サーバーが稼働する 2 インスタンス

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

+--------------------------------------+-------+--------+-------------------------+-----------------+----------+
| ID                                   | Name  | Status | Networks                | Image           | Flavor   |
+--------------------------------------+-------+--------+-------------------------+-----------------+----------+
| a728d98e-566f-4841-98ff-7373e6d598d5 | Web02 | ACTIVE | private=192.168.100.128 | CentOS-Stream-8 | m1.small |
| 8f14c86f-2074-4b3e-801b-1ae71da58cec | Web01 | ACTIVE | private=192.168.100.46  | CentOS-Stream-8 | m1.small |
+--------------------------------------+-------+--------+-------------------------+-----------------+----------+

# 作成したプールのメンバーに加える

[root@dlp ~(keystone)]#
openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.128 --protocol-port 80 pool01

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| address             | 192.168.100.128                      |
| admin_state_up      | True                                 |
| created_at          | 2022-06-02T00:49:51                  |
| id                  | 3f09abfb-dfcb-49de-adab-77f31539d476 |
| name                |                                      |
| operating_status    | NO_MONITOR                           |
| project_id          | 0609d3b3b398456187fb705ec9224c4a     |
| protocol_port       | 80                                   |
| provisioning_status | PENDING_CREATE                       |
| subnet_id           | 748c0a25-c6d8-48fd-829e-8b15783b7f8a |
| updated_at          | None                                 |
| weight              | 1                                    |
| monitor_port        | None                                 |
| monitor_address     | None                                 |
| backup              | False                                |
| tags                |                                      |
+---------------------+--------------------------------------+

[root@dlp ~(keystone)]#
openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.46 --protocol-port 80 pool01

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| address             | 192.168.100.46                       |
| admin_state_up      | True                                 |
| created_at          | 2022-06-02T00:50:20                  |
| id                  | 3924c65e-50d9-4bb9-9d67-e0c17a0f517f |
| name                |                                      |
| operating_status    | NO_MONITOR                           |
| project_id          | 0609d3b3b398456187fb705ec9224c4a     |
| protocol_port       | 80                                   |
| provisioning_status | PENDING_CREATE                       |
| subnet_id           | 748c0a25-c6d8-48fd-829e-8b15783b7f8a |
| updated_at          | None                                 |
| weight              | 1                                    |
| monitor_port        | None                                 |
| monitor_address     | None                                 |
| backup              | False                                |
| tags                |                                      |
+---------------------+--------------------------------------+

[root@dlp ~(keystone)]#
openstack loadbalancer member list pool01

+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+
| id                                   | name | project_id                       | provisioning_status | address         | protocol_port | operating_status | weight |
+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+
| 3f09abfb-dfcb-49de-adab-77f31539d476 |      | 0609d3b3b398456187fb705ec9224c4a | ACTIVE              | 192.168.100.128 |            80 | NO_MONITOR       |      1 |
| 3924c65e-50d9-4bb9-9d67-e0c17a0f517f |      | 0609d3b3b398456187fb705ec9224c4a | ACTIVE              | 192.168.100.46  |            80 | NO_MONITOR       |      1 |
+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+

# 外側ネットワークにフローティング IP 作成

[root@dlp ~(keystone)]#
openstack floating ip create public

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| created_at          | 2022-06-02T00:51:12Z                 |
| description         |                                      |
| dns_domain          |                                      |
| dns_name            |                                      |
| fixed_ip_address    | None                                 |
| floating_ip_address | 10.0.0.249                           |
| floating_network_id | 0c96d581-95f3-4e72-9626-d0a94407d0ec |
| id                  | fd2878aa-cf4c-4acc-b1bf-fe2a29379ddb |
| name                | 10.0.0.249                           |
| port_details        | None                                 |
| port_id             | None                                 |
| project_id          | 0609d3b3b398456187fb705ec9224c4a     |
| qos_policy_id       | None                                 |
| revision_number     | 0                                    |
| router_id           | None                                 |
| status              | DOWN                                 |
| subnet_id           | None                                 |
| tags                | []                                   |
| updated_at          | 2022-06-02T00:51:12Z                 |
+---------------------+--------------------------------------+

# ロードバランサーインスタンスの VIP とフローティング IP を関連付ける

[root@dlp ~(keystone)]#
VIPPORT=$(openstack loadbalancer show lb01 | grep vip_port_id | awk {'print $4'})

[root@dlp ~(keystone)]#
openstack floating ip set --port $VIPPORT 10.0.0.249
# フローティング IP 宛てにアクセスして動作確認

[root@dlp ~(keystone)]#
curl 10.0.0.249

Web Server on Instance01
[root@dlp ~(keystone)]#
curl 10.0.0.249

Web Server on Instance02
[root@dlp ~(keystone)]#
curl 10.0.0.249

Web Server on Instance01
[root@dlp ~(keystone)]#
curl 10.0.0.249

Web Server on Instance02
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