Ubuntu 20.04
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OpenStack Victoria : How to use Octavia
2020/10/20
 
Install and Configure OpenStack Load Balancing as a Service (Octavia).
This example is based on the environment like follows.
Configured Networking is VXLAN like here on this environment.
------------+---------------------------+---------------------------+------------
            |                           |                           |
        eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
+-----------+-----------+   +-----------+-----------+   +-----------+-----------+
|    [ Control Node ]   |   |    [ Network Node ]   |   |    [ Compute Node ]   |
|                       |   |                       |   |                       |
|  MariaDB    RabbitMQ  |   |        L2 Agent       |   |        Libvirt        |
|  Memcached  httpd     |   |        L3 Agent       |   |     Nova Compute      |
|  Keystone   Glance    |   |     Metadata Agent    |   |        L2 Agent       |
|  Nova API             |   |    Octavia Services   |   |                       |
|  Neutron Server       |   |                       |   |                       |
|  Metadata Agent       |   |                       |   |                       |
+-----------------------+   +-----------------------+   +-----------------------+

[1] Create 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           |
+--------------------------------------+----------------+--------------------------------------+------------------+
| 7aa5fca7-efe4-4a30-b1f0-0653cc743a1c | public-subnet  | 5d7b1b73-602d-40e2-a82f-352991de37e0 | 10.0.0.0/24      |
| e7e82cb2-29c0-4eea-a459-e212a2bc3650 | private-subnet | 9f39959f-2f70-400c-aa80-5de54e92cf27 | 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          | 2020-10-20T03:24:40                  |
| description         |                                      |
| flavor_id           | None                                 |
| id                  | a470fa59-3a14-4eef-9a55-b9783f4c9d04 |
| listeners           |                                      |
| name                | lb01                                 |
| operating_status    | OFFLINE                              |
| pools               |                                      |
| project_id          | b573c9e160864f028fc2d681a929f5af     |
| provider            | amphora                              |
| provisioning_status | PENDING_CREATE                       |
| updated_at          | None                                 |
| vip_address         | 192.168.100.31                       |
| vip_network_id      | 9f39959f-2f70-400c-aa80-5de54e92cf27 |
| vip_port_id         | 982e19d5-0ad5-4323-8a6c-40b9ab782bdf |
| vip_qos_policy_id   | None                                 |
| vip_subnet_id       | e7e82cb2-29c0-4eea-a459-e212a2bc3650 |
+---------------------+--------------------------------------+

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

root@dlp ~(keystone)#
openstack loadbalancer list

+--------------------------------------+------+----------------------------------+----------------+---------------------+------------------+----------+
| id                                   | name | project_id                       | vip_address    | provisioning_status | operating_status | provider |
+--------------------------------------+------+----------------------------------+----------------+---------------------+------------------+----------+
| a470fa59-3a14-4eef-9a55-b9783f4c9d04 | lb01 | b573c9e160864f028fc2d681a929f5af | 192.168.100.31 | 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                  | 2020-10-20T03:31:53                  |
| default_pool_id             | None                                 |
| default_tls_container_ref   | None                                 |
| description                 |                                      |
| id                          | 1805953e-5c0d-424e-a0d3-b9cd450769d4 |
| insert_headers              | None                                 |
| l7policies                  |                                      |
| loadbalancers               | a470fa59-3a14-4eef-9a55-b9783f4c9d04 |
| name                        | listener01                           |
| operating_status            | OFFLINE                              |
| project_id                  | b573c9e160864f028fc2d681a929f5af     |
| 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                                 |
+-----------------------------+--------------------------------------+

# 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           | 2020-10-20T03:32:11                  |
| description          |                                      |
| healthmonitor_id     |                                      |
| id                   | 7b0139c5-dffe-4969-8f0d-c9a092ea734f |
| lb_algorithm         | ROUND_ROBIN                          |
| listeners            | 1805953e-5c0d-424e-a0d3-b9cd450769d4 |
| loadbalancers        | a470fa59-3a14-4eef-9a55-b9783f4c9d04 |
| members              |                                      |
| name                 | pool01                               |
| operating_status     | OFFLINE                              |
| project_id           | b573c9e160864f028fc2d681a929f5af     |
| 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                                 |
+----------------------+--------------------------------------+

# web server instances

root@dlp ~(keystone)#
openstack server list

+--------------------------------------+-------------------+--------+-------------------------+------------+----------+
| ID                                   | Name              | Status | Networks                | Image      | Flavor   |
+--------------------------------------+-------------------+--------+-------------------------+------------+----------+
| 79cd409d-05b6-4734-b395-656f91b3e365 | Ubuntu_2004-web02 | ACTIVE | private=192.168.100.13  | Ubuntu2004 | m1.small |
| 112e5147-2405-4cb6-81ad-e813fcc8ec85 | Ubuntu_2004-web01 | ACTIVE | private=192.168.100.189 | Ubuntu2004 | m1.small |
+--------------------------------------+-------------------+--------+-------------------------+------------+----------+

# add web server instances to the pool member

root@dlp ~(keystone)#
openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.13 --protocol-port 80 pool01

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| address             | 192.168.100.13                       |
| admin_state_up      | True                                 |
| created_at          | 2020-10-20T03:33:56                  |
| id                  | 9dff05b5-5332-4406-994e-4acf20c3c36e |
| name                |                                      |
| operating_status    | NO_MONITOR                           |
| project_id          | b573c9e160864f028fc2d681a929f5af     |
| protocol_port       | 80                                   |
| provisioning_status | PENDING_CREATE                       |
| subnet_id           | e7e82cb2-29c0-4eea-a459-e212a2bc3650 |
| updated_at          | None                                 |
| weight              | 1                                    |
| monitor_port        | None                                 |
| monitor_address     | None                                 |
| backup              | False                                |
+---------------------+--------------------------------------+

root@dlp ~(keystone)#
openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.189 --protocol-port 80 pool01

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| address             | 192.168.100.189                      |
| admin_state_up      | True                                 |
| created_at          | 2020-10-20T03:34:12                  |
| id                  | d7d3d421-bb7e-492d-a913-a39785abaedd |
| name                |                                      |
| operating_status    | NO_MONITOR                           |
| project_id          | b573c9e160864f028fc2d681a929f5af     |
| protocol_port       | 80                                   |
| provisioning_status | PENDING_CREATE                       |
| subnet_id           | e7e82cb2-29c0-4eea-a459-e212a2bc3650 |
| updated_at          | None                                 |
| weight              | 1                                    |
| monitor_port        | None                                 |
| monitor_address     | None                                 |
| backup              | False                                |
+---------------------+--------------------------------------+

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

+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+
| id                                   | name | project_id                       | provisioning_status | address         | protocol_port | operating_status | weight |
+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+
| 9dff05b5-5332-4406-994e-4acf20c3c36e |      | b573c9e160864f028fc2d681a929f5af | ACTIVE              | 192.168.100.13  |            80 | NO_MONITOR       |      1 |
| d7d3d421-bb7e-492d-a913-a39785abaedd |      | b573c9e160864f028fc2d681a929f5af | ACTIVE              | 192.168.100.189 |            80 | NO_MONITOR       |      1 |
+--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+

# create a floating IP on public network

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

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| created_at          | 2020-10-20T03:34:52Z                 |
| description         |                                      |
| dns_domain          | None                                 |
| dns_name            | None                                 |
| fixed_ip_address    | None                                 |
| floating_ip_address | 10.0.0.249                           |
| floating_network_id | 5d7b1b73-602d-40e2-a82f-352991de37e0 |
| id                  | c7b841f6-a2e8-4b1a-afdb-baf8d42e7b7c |
| name                | 10.0.0.249                           |
| port_details        | None                                 |
| port_id             | None                                 |
| project_id          | b573c9e160864f028fc2d681a929f5af     |
| qos_policy_id       | None                                 |
| revision_number     | 0                                    |
| router_id           | None                                 |
| status              | DOWN                                 |
| subnet_id           | None                                 |
| tags                | []                                   |
| updated_at          | 2020-10-20T03:34:52Z                 |
+---------------------+--------------------------------------+

# assosiate 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 10.0.0.249
# verify settings to access to the floating IP

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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