OpenStack Dalmatian : How to use Octavia2024/10/16 |
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Install and Configure OpenStack Load Balancing as a Service (Octavia). This example is based on the environment like follows.
------------+--------------------------+--------------------------+------------
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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)]# dnf --enablerepo=centos-openstack-dalmatian,epel,crb -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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[cent@dlp ~(keystone)]$ openstack subnet list +--------------------------------------+----------------+--------------------------------------+------------------+ | ID | Name | Network | Subnet | +--------------------------------------+----------------+--------------------------------------+------------------+ | 8fbc394a-e821-47d8-8efc-d5f7c7db0ff8 | public-subnet | 7302c07e-c543-4a85-a955-d6cc8a4e4011 | 10.0.0.0/24 | | dfb0949d-d775-4c17-9b07-b01ac7d71aac | private-subnet | aa200aa9-ddb2-4d89-aa37-ce3e3a939421 | 192.168.100.0/24 | +--------------------------------------+----------------+--------------------------------------+------------------+[cent@dlp ~(keystone)]$ openstack loadbalancer create --name lb01 --vip-subnet-id private-subnet +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | admin_state_up | True | | availability_zone | None | | created_at | 2024-10-16T00:11:42 | | description | | | flavor_id | None | | id | 73c85621-edfa-408a-8d6b-6249e684b7ed | | listeners | | | name | lb01 | | operating_status | OFFLINE | | pools | | | project_id | 756e2b4937c44d3991028e294f92d89a | | provider | amphora | | provisioning_status | PENDING_CREATE | | updated_at | None | | vip_address | 192.168.100.127 | | vip_network_id | aa200aa9-ddb2-4d89-aa37-ce3e3a939421 | | vip_port_id | 348543ce-dae1-4067-a188-c3a86104a730 | | vip_qos_policy_id | None | | vip_subnet_id | dfb0949d-d775-4c17-9b07-b01ac7d71aac | | vip_vnic_type | normal | | tags | | | additional_vips | [] | +---------------------+--------------------------------------+ # after a few minutes, status turns to [ACTIVE] if instance successfully created [cent@dlp ~(keystone)]$ openstack loadbalancer list +--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+ | id | name | project_id | vip_address | provisioning_status | operating_status | provider | +--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+ | 73c85621-edfa-408a-8d6b-6249e684b7ed | lb01 | 756e2b4937c44d3991028e294f92d89a | 192.168.100.127 | ACTIVE | OFFLINE | amphora | +--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+ |
| [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 [cent@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 | 2024-10-16T00:15:35 | | default_pool_id | None | | default_tls_container_ref | None | | description | | | id | 988bd165-2f71-45d7-9c50-0a2250afc71f | | insert_headers | None | | l7policies | | | loadbalancers | 73c85621-edfa-408a-8d6b-6249e684b7ed | | name | listener01 | | operating_status | OFFLINE | | project_id | 756e2b4937c44d3991028e294f92d89a | | 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 [cent@dlp ~(keystone)]$ openstack loadbalancer pool create --name pool01 --lb-algorithm ROUND_ROBIN --listener listener01 --protocol TCP +----------------------+--------------------------------------+ | Field | Value | +----------------------+--------------------------------------+ | admin_state_up | True | | created_at | 2024-10-16T00:15:56 | | description | | | healthmonitor_id | | | id | 443396ae-bf55-49c8-8e74-1048d5faade4 | | lb_algorithm | ROUND_ROBIN | | listeners | 988bd165-2f71-45d7-9c50-0a2250afc71f | | loadbalancers | 73c85621-edfa-408a-8d6b-6249e684b7ed | | members | | | name | pool01 | | operating_status | OFFLINE | | project_id | 756e2b4937c44d3991028e294f92d89a | | 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 [cent@dlp ~(keystone)]$ openstack server list +--------------------------------------+-------+--------+-------------------------+----------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-------+--------+-------------------------+----------------+----------+ | a9f1cb25-0832-4977-95ed-518698a2df1b | Web02 | ACTIVE | private=192.168.100.92 | CentOS-Stream9 | m1.small | | bee5ba22-2491-4c43-b8c9-d2ca62d2ed18 | Web01 | ACTIVE | private=192.168.100.105 | CentOS-Stream9 | m1.small | +--------------------------------------+-------+--------+-------------------------+----------------+----------+ # add web server instances to the pool member [cent@dlp ~(keystone)]$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.92 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.92 | | admin_state_up | True | | created_at | 2024-10-16T00:22:09 | | id | 4b26b978-efae-473c-b9b5-a9e6aa6c4744 | | name | | | operating_status | NO_MONITOR | | project_id | 756e2b4937c44d3991028e294f92d89a | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | dfb0949d-d775-4c17-9b07-b01ac7d71aac | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | | | vnic_type | normal | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.105 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.105 | | admin_state_up | True | | created_at | 2024-10-16T00:22:28 | | id | f22c79ae-463e-4d01-884a-0a2a7877e8fa | | name | | | operating_status | NO_MONITOR | | project_id | 756e2b4937c44d3991028e294f92d89a | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | dfb0949d-d775-4c17-9b07-b01ac7d71aac | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | | | vnic_type | normal | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack loadbalancer member list pool01 +--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+ | id | name | project_id | provisioning_status | address | protocol_port | operating_status | weight | +--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+ | 4b26b978-efae-473c-b9b5-a9e6aa6c4744 | | 756e2b4937c44d3991028e294f92d89a | ACTIVE | 192.168.100.92 | 80 | NO_MONITOR | 1 | | f22c79ae-463e-4d01-884a-0a2a7877e8fa | | 756e2b4937c44d3991028e294f92d89a | ACTIVE | 192.168.100.105 | 80 | NO_MONITOR | 1 | +--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+ # create a floating IP on public network [cent@dlp ~(keystone)]$ openstack floating ip create public +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2024-10-16T00:23:09Z | | description | | | dns_domain | | | dns_name | | | fixed_ip_address | None | | floating_ip_address | 10.0.0.254 | | floating_network_id | 7302c07e-c543-4a85-a955-d6cc8a4e4011 | | id | b7ee72cf-18fc-4af0-a69f-aff487fa9554 | | name | 10.0.0.254 | | port_details | None | | port_id | None | | project_id | 756e2b4937c44d3991028e294f92d89a | | qos_policy_id | None | | revision_number | 0 | | router_id | None | | status | DOWN | | subnet_id | None | | tags | [] | | updated_at | 2024-10-16T00:23:09Z | +---------------------+--------------------------------------+ # associate floating IP with VIP of loadbalancer instace [cent@dlp ~(keystone)]$ VIPPORT=$(openstack loadbalancer show lb01 | grep vip_port_id | awk {'print $4'}) [cent@dlp ~(keystone)]$ openstack floating ip set --port $VIPPORT 10.0.0.254
# verify settings to access to the floating IP [cent@dlp ~(keystone)]$ curl 10.0.0.254 Web Server on Instance01 [cent@dlp ~(keystone)]$ curl 10.0.0.254 Web Server on Instance02 [cent@dlp ~(keystone)]$ curl 10.0.0.254 Web Server on Instance01 [cent@dlp ~(keystone)]$ curl 10.0.0.254 Web Server on Instance02 |
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