OpenStack Epoxy : How to use Octavia2025/04/24 |
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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 | +--------------------+----------------+---------------------+------------------+ | b691b066-62df- | public-subnet | cb803bda-6f08-4ae3- | 10.0.0.0/24 | | 45be-a5ee- | | 9018-1c4320ad0295 | | | 911e347174ba | | | | | daeaa092-2e5d- | private-subnet | fb4dc320-1981-4914- | 192.168.100.0/24 | | 44de-9de4- | | 9d3f-f8fd757c4562 | | | 51bea52b51b4 | | | | +--------------------+----------------+---------------------+------------------+ubuntu@dlp ~(keystone)$ openstack loadbalancer create --name lb01 --vip-subnet-id private-subnet +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | admin_state_up | True | | availability_zone | None | | created_at | 2025-04-24T03:48:19 | | description | | | flavor_id | None | | id | 7278be40-5516-43a5-90ff-bd6c83dca145 | | listeners | | | name | lb01 | | operating_status | OFFLINE | | pools | | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | provider | amphora | | provisioning_status | PENDING_CREATE | | updated_at | None | | vip_address | 192.168.100.165 | | vip_network_id | fb4dc320-1981-4914-9d3f-f8fd757c4562 | | vip_port_id | 52f4cd2e-554f-49f9-a68f-63ea51b334fe | | vip_qos_policy_id | None | | vip_subnet_id | daeaa092-2e5d-44de-9de4-51bea52b51b4 | | vip_vnic_type | normal | | vip_sg_ids | [] | | tags | | | 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 | +-----------+------+------------+-------------+---------------------+------------------+----------+ | 7278be40- | lb01 | 407400ec8d | 192.168.100 | ACTIVE | OFFLINE | amphora | | 5516- | | 16434e9bad | .165 | | | | | 43a5- | | f4ceb9d71f | | | | | | 90ff-bd6c | | 1e | | | | | | 83dca145 | | | | | | | +-----------+------+------------+-------------+---------------------+------------------+----------+ |
| [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 | 2025-04-24T03:50:48 | | default_pool_id | None | | default_tls_container_ref | None | | description | | | id | 12c973a0-ff14-4ff8-875b-2c5d7a207f11 | | insert_headers | None | | l7policies | | | loadbalancers | 7278be40-5516-43a5-90ff-bd6c83dca145 | | name | listener01 | | operating_status | OFFLINE | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | 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 | | | 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 | 2025-04-24T03:51:12 | | description | | | healthmonitor_id | | | id | e5439347-3764-4833-8758-dabf0885166e | | lb_algorithm | ROUND_ROBIN | | listeners | 12c973a0-ff14-4ff8-875b-2c5d7a207f11 | | loadbalancers | 7278be40-5516-43a5-90ff-bd6c83dca145 | | members | | | name | pool01 | | operating_status | OFFLINE | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | 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 ubuntu@dlp ~(keystone)$ openstack server list +------------------+-------+--------+------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +------------------+-------+--------+------------------+------------+----------+ | 6dc1fdf5-d514- | Web02 | ACTIVE | private=192.168. | Ubuntu2404 | m1.small | | 4e3e-a7a9- | | | 100.244 | | | | 3aaecb508f5b | | | | | | | 9e84e297-32cf- | Web01 | ACTIVE | private=192.168. | Ubuntu2404 | m1.small | | 4ce9-8db7- | | | 100.249 | | | | 5b5e5c8d0c6f | | | | | | +------------------+-------+--------+------------------+------------+----------+ # add web server instances to the pool member ubuntu@dlp ~(keystone)$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.244 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.244 | | admin_state_up | True | | created_at | 2025-04-24T04:04:54 | | id | a7774237-cad4-49e4-a9ba-3c2ed05cc20e | | name | | | operating_status | NO_MONITOR | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | daeaa092-2e5d-44de-9de4-51bea52b51b4 | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | | | vnic_type | normal | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.249 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.249 | | admin_state_up | True | | created_at | 2025-04-24T04:05:12 | | id | df3d6bac-0435-48b2-b9b0-197080095ce9 | | name | | | operating_status | NO_MONITOR | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | daeaa092-2e5d-44de-9de4-51bea52b51b4 | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | | | vnic_type | normal | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack loadbalancer member list pool01 +----------+------+------------+---------------------+----------+---------------+------------------+--------+ | id | name | project_id | provisioning_status | address | protocol_port | operating_status | weight | +----------+------+------------+---------------------+----------+---------------+------------------+--------+ | a7774237 | | 407400ec8d | ACTIVE | 192.168. | 80 | NO_MONITOR | 1 | | -cad4- | | 16434e9bad | | 100.244 | | | | | 49e4- | | f4ceb9d71f | | | | | | | a9ba- | | 1e | | | | | | | 3c2ed05c | | | | | | | | | c20e | | | | | | | | | df3d6bac | | 407400ec8d | ACTIVE | 192.168. | 80 | NO_MONITOR | 1 | | -0435- | | 16434e9bad | | 100.249 | | | | | 48b2- | | f4ceb9d71f | | | | | | | b9b0- | | 1e | | | | | | | 19708009 | | | | | | | | | 5ce9 | | | | | | | | +----------+------+------------+---------------------+----------+---------------+------------------+--------+ # create a floating IP on public network ubuntu@dlp ~(keystone)$ openstack floating ip create public +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2025-04-24T04:06:12Z | | description | | | dns_domain | | | dns_name | | | fixed_ip_address | None | | floating_ip_address | 10.0.0.205 | | floating_network_id | cb803bda-6f08-4ae3-9018-1c4320ad0295 | | id | 9468535c-906e-4152-bce3-2f291ffec233 | | name | 10.0.0.205 | | port_details | None | | port_id | None | | project_id | 407400ec8d16434e9badf4ceb9d71f1e | | qos_policy_id | None | | revision_number | 0 | | router_id | None | | status | DOWN | | subnet_id | None | | tags | [] | | updated_at | 2025-04-24T04:06:12Z | +---------------------+--------------------------------------+ # 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 $VIPPORT 10.0.0.205
# verify settings to access to the floating IP ubuntu@dlp ~(keystone)$ curl 10.0.0.205 Web Server on Instance01 ubuntu@dlp ~(keystone)$ curl 10.0.0.205 Web Server on Instance02 ubuntu@dlp ~(keystone)$ curl 10.0.0.205 Web Server on Instance01 ubuntu@dlp ~(keystone)$ curl 10.0.0.205 Web Server on Instance02 |
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