OpenStack Xena : How to use Octavia2021/11/25 |
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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
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [ 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 Volume | | OVN Metadata Agent |
| Cinder API | | iSCSI Target | | OVN-Controller |
| | | Octavia Services | | |
+-----------------------+ +-----------------------+ +-----------------------+
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| [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) |
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[root@dlp ~(keystone)]# openstack subnet list +--------------------------------------+----------------+--------------------------------------+------------------+ | ID | Name | Network | Subnet | +--------------------------------------+----------------+--------------------------------------+------------------+ | 61bf3654-bef1-4ddd-8d23-f2fd41166f4e | public-subnet | ac8911e7-afd7-4913-997e-2f0412f1271b | 10.0.0.0/24 | | 9724f8a3-4c59-4d7d-9838-82bc682a551c | private-subnet | 3adf0a70-6446-4095-916d-17d9f753bbe6 | 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 | 2021-11-25T00:26:11 | | description | | | flavor_id | None | | id | 5a52749c-95e5-49c5-a034-431a5721b4af | | listeners | | | name | lb01 | | operating_status | OFFLINE | | pools | | | project_id | b12f95625664420ca31949963b75b74f | | provider | amphora | | provisioning_status | PENDING_CREATE | | updated_at | None | | vip_address | 192.168.100.220 | | vip_network_id | 3adf0a70-6446-4095-916d-17d9f753bbe6 | | vip_port_id | 7710dbbd-00fc-40eb-8c7e-eaa447abf52c | | vip_qos_policy_id | None | | vip_subnet_id | 9724f8a3-4c59-4d7d-9838-82bc682a551c | | tags | | +---------------------+--------------------------------------+ # 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 | +--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+ | 5a52749c-95e5-49c5-a034-431a5721b4af | lb01 | b12f95625664420ca31949963b75b74f | 192.168.100.220 | ACTIVE | OFFLINE | amphora | +--------------------------------------+------+----------------------------------+-----------------+---------------------+------------------+----------+ |
| [2] | 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 [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 | 2021-11-25T00:29:01 | | default_pool_id | None | | default_tls_container_ref | None | | description | | | id | 8df57f4f-bcd0-46df-aafd-fdd77e81fa02 | | insert_headers | None | | l7policies | | | loadbalancers | 5a52749c-95e5-49c5-a034-431a5721b4af | | name | listener01 | | operating_status | OFFLINE | | project_id | b12f95625664420ca31949963b75b74f | | 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 | 2021-11-25T00:29:24 | | description | | | healthmonitor_id | | | id | 537b409b-1ccf-475d-b009-106b802d5891 | | lb_algorithm | ROUND_ROBIN | | listeners | 8df57f4f-bcd0-46df-aafd-fdd77e81fa02 | | loadbalancers | 5a52749c-95e5-49c5-a034-431a5721b4af | | members | | | name | pool01 | | operating_status | OFFLINE | | project_id | b12f95625664420ca31949963b75b74f | | 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 | +--------------------------------------+-------+--------+------------------------+-----------------+----------+ | 267da02c-056a-4678-9d49-c19c802a2cde | Web02 | ACTIVE | private=192.168.100.78 | CentOS-Stream-8 | m1.small | | ff35a3bb-d2cd-4c01-9960-a34c6cb5a5a2 | Web01 | ACTIVE | private=192.168.100.44 | CentOS-Stream-8 | m1.small | +--------------------------------------+-------+--------+------------------------+-----------------+----------+ # add web server instances to the pool member [root@dlp ~(keystone)]# openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.78 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.78 | | admin_state_up | True | | created_at | 2021-11-25T00:34:38 | | id | 48df21bb-b8d6-4af2-a6c8-64400cddc518 | | name | | | operating_status | NO_MONITOR | | project_id | b12f95625664420ca31949963b75b74f | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | 9724f8a3-4c59-4d7d-9838-82bc682a551c | | 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 192.168.100.44 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.44 | | admin_state_up | True | | created_at | 2021-11-25T00:34:51 | | id | b2d1f0e0-af04-48c6-a6a7-11323081d683 | | name | | | operating_status | NO_MONITOR | | project_id | b12f95625664420ca31949963b75b74f | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | 9724f8a3-4c59-4d7d-9838-82bc682a551c | | 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 | +--------------------------------------+------+----------------------------------+---------------------+----------------+---------------+------------------+--------+ | 48df21bb-b8d6-4af2-a6c8-64400cddc518 | | b12f95625664420ca31949963b75b74f | ACTIVE | 192.168.100.78 | 80 | NO_MONITOR | 1 | | b2d1f0e0-af04-48c6-a6a7-11323081d683 | | b12f95625664420ca31949963b75b74f | ACTIVE | 192.168.100.44 | 80 | NO_MONITOR | 1 | +--------------------------------------+------+----------------------------------+---------------------+----------------+---------------+------------------+--------+ # create a floating IP on public network [root@dlp ~(keystone)]# openstack floating ip create public +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2021-11-25T00:42:32Z | | description | | | dns_domain | | | dns_name | | | fixed_ip_address | None | | floating_ip_address | 10.0.0.253 | | floating_network_id | ac8911e7-afd7-4913-997e-2f0412f1271b | | id | 30ef7fe3-b45b-4182-a8ad-7331e005d7df | | name | 10.0.0.253 | | port_details | None | | port_id | None | | project_id | b12f95625664420ca31949963b75b74f | | qos_policy_id | None | | revision_number | 0 | | router_id | None | | status | DOWN | | subnet_id | None | | tags | [] | | updated_at | 2021-11-25T00:42:32Z | +---------------------+--------------------------------------+ # 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 10.0.0.253
# verify settings to access to the floating IP [root@dlp ~(keystone)]# curl 10.0.0.253 Web Server on Instance01 [root@dlp ~(keystone)]# curl 10.0.0.253 Web Server on Instance02 [root@dlp ~(keystone)]# curl 10.0.0.253 Web Server on Instance01 [root@dlp ~(keystone)]# curl 10.0.0.253 Web Server on Instance02 |
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