OpenStack Flamingo : How to use Octavia2025/11/28 |
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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 Nginx | | Neutron Server | | Nova Compute |
| Keystone httpd | | OVN-Northd | | Open vSwitch |
| Glance Nova API | | Nginx iSCSI Target | | OVN Metadata Agent |
| Cinder API | | Cinder Volume | | OVN-Controller |
| | | Octavia Services | | |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] | Install Octavia client tool. |
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root@dlp ~(keystone)# apt -y install python3-octaviaclient
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| [2] | Login as any Openstack user and create Loadbalancer instance. It's OK to work on any node. (example below is on Control Node) |
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ubuntu@dlp ~(keystone)$ openstack subnet list +--------------------+----------------+---------------------+------------------+ | ID | Name | Network | Subnet | +--------------------+----------------+---------------------+------------------+ | 0143ec7e-f39a- | public-subnet | 7457c2ad-572e-4cb9- | 10.0.0.0/24 | | 43ac-8c12- | | 86c0-20f4e89da51b | | | 78e2b9d27ba7 | | | | | ca5e015c-a5cb- | private-subnet | 3d439616-ee5c-49b9- | 192.168.100.0/24 | | 4c2e-a390- | | ac27-9525818605d8 | | | d0ac1bd05916 | | | | +--------------------+----------------+---------------------+------------------+ubuntu@dlp ~(keystone)$ openstack loadbalancer create --name lb01 --vip-subnet-id private-subnet +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | admin_state_up | True | | availability_zone | None | | created_at | 2025-11-28T05:18:43 | | description | | | flavor_id | None | | id | 4111f806-a4c2-45c5-9eab-9c418101df51 | | listeners | None | | name | lb01 | | operating_status | OFFLINE | | pools | None | | project_id | b45ce8ac12c749e49e933c84334e79de | | provider | amphora | | provisioning_status | PENDING_CREATE | | updated_at | None | | vip_address | 192.168.100.236 | | vip_network_id | 3d439616-ee5c-49b9-ac27-9525818605d8 | | vip_port_id | edd8d568-5393-4c5b-8492-c573741fb9cd | | vip_qos_policy_id | None | | vip_subnet_id | ca5e015c-a5cb-4c2e-a390-d0ac1bd05916 | | vip_vnic_type | normal | | vip_sg_ids | [] | | tags | None | | additional_vips | [] | +---------------------+--------------------------------------+ # after a few minutes, status turns to [ACTIVE] if instance successfully created ubuntu@dlp ~(keystone)$ openstack loadbalancer list +-----------+------+------------+-------------+---------------------+------------------+----------+ | id | name | project_id | vip_address | provisioning_status | operating_status | provider | +-----------+------+------------+-------------+---------------------+------------------+----------+ | 4111f806- | lb01 | b45ce8ac12 | 192.168.100 | ACTIVE | OFFLINE | amphora | | a4c2- | | c749e49e93 | .236 | | | | | 45c5- | | 3c84334e79 | | | | | | 9eab- | | de | | | | | | 9c418101d | | | | | | | | f51 | | | | | | | +-----------+------+------------+-------------+---------------------+------------------+----------+ |
| [3] | Add a listener and pool to the instance and Configure loadbalancing to use 2 backend Web Server instances. |
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# create a listener that listens TCP 80 ubuntu@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 | 2025-11-28T05:22:52 | | default_pool_id | None | | default_tls_container_ref | None | | description | | | id | bce06e82-46eb-4b3f-b9af-6c2b0d4e700c | | insert_headers | None | | l7policies | None | | loadbalancers | 4111f806-a4c2-45c5-9eab-9c418101df51 | | name | listener01 | | operating_status | OFFLINE | | project_id | b45ce8ac12c749e49e933c84334e79de | | 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 | None | | hsts_max_age | None | | hsts_include_subdomains | False | | hsts_preload | False | +-----------------------------+--------------------------------------+ # add a pool to the listener ubuntu@dlp ~(keystone)$ openstack loadbalancer pool create --name pool01 --lb-algorithm ROUND_ROBIN --listener listener01 --protocol TCP +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | admin_state_up | True | | created_at | 2025-11-28T05:23:21 | | description | | | healthmonitor_id | | | id | 01d09c77-a810-4a95-9e97-2b63df04ee32 | | lb_algorithm | ROUND_ROBIN | | listeners | bce06e82-46eb-4b3f-b9af-6c2b0d4e700c | | loadbalancers | 4111f806-a4c2-45c5-9eab-9c418101df51 | | members | None | | name | pool01 | | operating_status | OFFLINE | | project_id | b45ce8ac12c749e49e933c84334e79de | | 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 | None | | alpn_protocols | None | +----------------------+--------------------------------------+ # web server instances ubuntu@dlp ~(keystone)$ openstack server list +------------------+-------+--------+------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +------------------+-------+--------+------------------+------------+----------+ | bd950f97-89f1- | Web02 | ACTIVE | private=192.168. | Ubuntu2404 | m1.small | | 40fa-a611- | | | 100.77 | | | | 9999638d1006 | | | | | | | 4f1f7f28-a6d4- | Web01 | ACTIVE | private=192.168. | Ubuntu2404 | m1.small | | 48d0-9560- | | | 100.94 | | | | 84656c82b827 | | | | | | +------------------+-------+--------+------------------+------------+----------+ # add web server instances to the pool member ubuntu@dlp ~(keystone)$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.77 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.77 | | admin_state_up | True | | created_at | 2025-11-28T05:25:34 | | id | 84b6a5c9-c50c-4cc5-a62d-f38af8b8f7a0 | | name | | | operating_status | NO_MONITOR | | project_id | b45ce8ac12c749e49e933c84334e79de | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | ca5e015c-a5cb-4c2e-a390-d0ac1bd05916 | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | None | | vnic_type | normal | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.94 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.94 | | admin_state_up | True | | created_at | 2025-11-28T05:25:58 | | id | 2e0b1702-b978-4a96-bc51-47b708237a04 | | name | | | operating_status | NO_MONITOR | | project_id | b45ce8ac12c749e49e933c84334e79de | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | ca5e015c-a5cb-4c2e-a390-d0ac1bd05916 | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | None | | vnic_type | normal | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack loadbalancer member list pool01 +----------+------+------------+---------------------+----------+---------------+------------------+--------+ | id | name | project_id | provisioning_status | address | protocol_port | operating_status | weight | +----------+------+------------+---------------------+----------+---------------+------------------+--------+ | 84b6a5c9 | | b45ce8ac12 | ACTIVE | 192.168. | 80 | NO_MONITOR | 1 | | -c50c- | | c749e49e93 | | 100.77 | | | | | 4cc5- | | 3c84334e79 | | | | | | | a62d- | | de | | | | | | | f38af8b8 | | | | | | | | | f7a0 | | | | | | | | | 2e0b1702 | | b45ce8ac12 | ACTIVE | 192.168. | 80 | NO_MONITOR | 1 | | -b978- | | c749e49e93 | | 100.94 | | | | | 4a96- | | 3c84334e79 | | | | | | | bc51- | | de | | | | | | | 47b70823 | | | | | | | | | 7a04 | | | | | | | | +----------+------+------------+---------------------+----------+---------------+------------------+--------+ # create a floating IP on public network ubuntu@dlp ~(keystone)$ openstack floating ip create public +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2025-11-28T05:26:34Z | | description | | | dns_domain | | | dns_name | | | fixed_ip_address | None | | floating_ip_address | 10.0.0.226 | | floating_network_id | 7457c2ad-572e-4cb9-86c0-20f4e89da51b | | id | 4c6e8a9b-b8de-4f29-be0c-38d7dcd59777 | | name | 10.0.0.226 | | port_details | None | | port_id | None | | project_id | b45ce8ac12c749e49e933c84334e79de | | qos_policy_id | None | | revision_number | 0 | | router_id | None | | status | DOWN | | subnet_id | None | | tags | [] | | updated_at | 2025-11-28T05:26:34Z | +---------------------+--------------------------------------+ # associate floating IP with VIP of loadbalancer instace ubuntu@dlp ~(keystone)$ VIPPORT=$(openstack loadbalancer show lb01 | grep vip_port_id | awk {'print $4'}) ubuntu@dlp ~(keystone)$ openstack floating ip set --port $VIPPORT 10.0.0.226
# verify settings to access to the floating IP ubuntu@dlp ~(keystone)$ curl 10.0.0.226 Web Server on Instance01 ubuntu@dlp ~(keystone)$ curl 10.0.0.226 Web Server on Instance02 ubuntu@dlp ~(keystone)$ curl 10.0.0.226 Web Server on Instance01 ubuntu@dlp ~(keystone)$ curl 10.0.0.226 Web Server on Instance02 |
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