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OpenStack Yoga : How to use Octavia2022/06/10

 
Install and Configure OpenStack Load Balancing as a Service (Octavia).
This example is based on the environment like follows.
------------+-----------------------------+-----------------------------+------------
            |                             |                             |
        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] Create a Loadbalancer instance.
By default, [admin] users can create instances, so work as an admin user.
It's OK to work on any node. (example below is on Control Node)
[root@dlp ~(keystone)]#
openstack subnet list

+--------------------------------------+----------------+--------------------------------------+------------------+
| ID                                   | Name           | Network                              | Subnet           |
+--------------------------------------+----------------+--------------------------------------+------------------+
| 50ab40e2-c1ff-4371-a829-bbc228ddd16f | public-subnet  | 9669b364-5e91-4858-bff1-437a23be347b | 10.0.0.0/24      |
| 80a576b7-55e6-4d3b-86d9-26bb0c4e7d57 | private-subnet | c4ede804-96e1-4b1b-bf1b-341f752065c0 | 192.168.100.0/24 |
+--------------------------------------+----------------+--------------------------------------+------------------+

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

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| admin_state_up      | True                                 |
| availability_zone   | None                                 |
| created_at          | 2022-06-10T07:39:26                  |
| description         |                                      |
| flavor_id           | None                                 |
| id                  | b017a057-9c62-43fc-a135-b5b77b97ed4e |
| listeners           |                                      |
| name                | lb01                                 |
| operating_status    | OFFLINE                              |
| pools               |                                      |
| project_id          | 9c8b7457e8db4cbc995a767706804b70     |
| provider            | amphora                              |
| provisioning_status | PENDING_CREATE                       |
| updated_at          | None                                 |
| vip_address         | 192.168.100.247                      |
| vip_network_id      | c4ede804-96e1-4b1b-bf1b-341f752065c0 |
| vip_port_id         | 0e0a9f34-0b4c-414b-ae34-3476fa53d8a9 |
| vip_qos_policy_id   | None                                 |
| vip_subnet_id       | 80a576b7-55e6-4d3b-86d9-26bb0c4e7d57 |
| tags                |                                      |
+---------------------+--------------------------------------+

# after a few minutes, status turns to [ACTIVE] if instance successfully created

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

+--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+
| id                                   | name | project_id                       | vip_address     | provisioning_status | operating_status | provider |
+--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+
| b017a057-9c62-43fc-a135-b5b77b97ed4e | lb01 | 9c8b7457e8db4cbc995a767706804b70 | 192.168.100.247 | ACTIVE              | OFFLINE          | amphora  |
+--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+
[2] Add a listener and pool to the instance and Configure loadbalancing to use 2 backend Web Server instances.
# create a listener that listens TCP 80

[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                  | 2022-06-10T07:42:05                  |
| default_pool_id             | None                                 |
| default_tls_container_ref   | None                                 |
| description                 |                                      |
| id                          | 11b83404-baea-4cbb-9a1c-ccd27c6bd752 |
| insert_headers              | None                                 |
| l7policies                  |                                      |
| loadbalancers               | b017a057-9c62-43fc-a135-b5b77b97ed4e |
| name                        | listener01                           |
| operating_status            | OFFLINE                              |
| project_id                  | 9c8b7457e8db4cbc995a767706804b70     |
| 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                        |                                      |
+-----------------------------+--------------------------------------+

# add a pool to the listener

[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           | 2022-06-10T07:42:29                  |
| description          |                                      |
| healthmonitor_id     |                                      |
| id                   | 3a3867ed-7ed6-4e7e-b228-8cf7fae7c62a |
| lb_algorithm         | ROUND_ROBIN                          |
| listeners            | 11b83404-baea-4cbb-9a1c-ccd27c6bd752 |
| loadbalancers        | b017a057-9c62-43fc-a135-b5b77b97ed4e |
| members              |                                      |
| name                 | pool01                               |
| operating_status     | OFFLINE                              |
| project_id           | 9c8b7457e8db4cbc995a767706804b70     |
| 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 server instances

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

+--------------------------------------+----------------------------------------------+---------+--------------------------------------------+----------------+------------+
| ID                                   | Name                                         | Status  | Networks                                   | Image          | Flavor     |
+--------------------------------------+----------------------------------------------+---------+--------------------------------------------+----------------+------------+
| 40642ab8-36db-429f-a90b-9c9df443992f | Web02                                        | ACTIVE  | private=192.168.100.243                    | CentOS-Stream9 | m1.small   |
| 63106ba1-eacc-4a23-a924-ea59317d5d05 | Web01                                        | ACTIVE  | private=192.168.100.23                     | CentOS-Stream9 | m1.small   |
| 40e58db0-8141-47a2-bd43-c45f38b3312d | amphora-542c92ad-d898-4bd1-b365-607bf5be59ee | ACTIVE  | private=192.168.100.145; public=10.0.0.200 | Amphora        | m1.octavia |
+--------------------------------------+----------------------------------------------+---------+--------------------------------------------+----------------+------------+

# add web server instances to the pool member

[root@dlp ~(keystone)]#
openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.243 --protocol-port 80 pool01

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| address             | 192.168.100.243                      |
| admin_state_up      | True                                 |
| created_at          | 2022-06-10T07:50:47                  |
| id                  | 6699760d-5a8c-4b08-a356-15910be163ed |
| name                |                                      |
| operating_status    | NO_MONITOR                           |
| project_id          | 9c8b7457e8db4cbc995a767706804b70     |
| protocol_port       | 80                                   |
| provisioning_status | PENDING_CREATE                       |
| subnet_id           | 80a576b7-55e6-4d3b-86d9-26bb0c4e7d57 |
| 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 192.168.100.23 --protocol-port 80 pool01

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| address             | 192.168.100.23                       |
| admin_state_up      | True                                 |
| created_at          | 2022-06-10T07:51:02                  |
| id                  | 6dfa05f2-dce2-4091-b0c4-6ccd796da7d0 |
| name                |                                      |
| operating_status    | NO_MONITOR                           |
| project_id          | 9c8b7457e8db4cbc995a767706804b70     |
| protocol_port       | 80                                   |
| provisioning_status | PENDING_CREATE                       |
| subnet_id           | 80a576b7-55e6-4d3b-86d9-26bb0c4e7d57 |
| 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 |
+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+
| 6699760d-5a8c-4b08-a356-15910be163ed |      | 9c8b7457e8db4cbc995a767706804b70 | ACTIVE              | 192.168.100.243 |            80 | NO_MONITOR       |      1 |
| 6dfa05f2-dce2-4091-b0c4-6ccd796da7d0 |      | 9c8b7457e8db4cbc995a767706804b70 | ACTIVE              | 192.168.100.23  |            80 | NO_MONITOR       |      1 |
+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+

# create a floating IP on public network

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

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| created_at          | 2022-06-10T07:52:03Z                 |
| description         |                                      |
| dns_domain          |                                      |
| dns_name            |                                      |
| fixed_ip_address    | None                                 |
| floating_ip_address | 10.0.0.246                           |
| floating_network_id | 9669b364-5e91-4858-bff1-437a23be347b |
| id                  | 717361a3-fdc2-42c0-bf99-cfe7734e6265 |
| name                | 10.0.0.246                           |
| port_details        | None                                 |
| port_id             | None                                 |
| project_id          | 9c8b7457e8db4cbc995a767706804b70     |
| qos_policy_id       | None                                 |
| revision_number     | 0                                    |
| router_id           | None                                 |
| status              | DOWN                                 |
| subnet_id           | None                                 |
| tags                | []                                   |
| updated_at          | 2022-06-10T07:52:03Z                 |
+---------------------+--------------------------------------+

# associate floating IP with VIP of loadbalancer instace

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

[root@dlp ~(keystone)]#
openstack floating ip set --port $VIPPORT 10.0.0.246
# verify settings to access to the floating IP

[root@dlp ~(keystone)]#
curl 10.0.0.246

Web Server on Instance01
[root@dlp ~(keystone)]#
curl 10.0.0.246

Web Server on Instance02
[root@dlp ~(keystone)]#
curl 10.0.0.246

Web Server on Instance01
[root@dlp ~(keystone)]#
curl 10.0.0.246

Web Server on Instance02
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