OpenStack Caracal : How to use Octavia2024/08/07 |
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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-caracal,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 | +--------------------------------------+----------------+--------------------------------------+------------------+ | e32f2074-d33b-4b13-9605-1a29301f93a1 | private-subnet | 5bf02aae-1fef-4303-937a-74b8412bf90a | 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 | 2024-08-07T08:03:19 | | description | | | flavor_id | None | | id | f1693481-0e8b-4cea-8b5c-7ad30b2543f8 | | listeners | | | name | lb01 | | operating_status | OFFLINE | | pools | | | project_id | 03a31c43ede44dcbaacb05c870920e81 | | provider | amphora | | provisioning_status | PENDING_CREATE | | updated_at | None | | vip_address | 192.168.100.82 | | vip_network_id | 5bf02aae-1fef-4303-937a-74b8412bf90a | | vip_port_id | fafefd4f-9037-4aff-b04e-f9a644a0afda | | vip_qos_policy_id | None | | vip_subnet_id | e32f2074-d33b-4b13-9605-1a29301f93a1 | | 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 | +--------------------------------------+------+----------------------------------+----------------+---------------------+------------------+----------+ | f1693481-0e8b-4cea-8b5c-7ad30b2543f8 | lb01 | 03a31c43ede44dcbaacb05c870920e81 | 192.168.100.82 | 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 | 2024-08-07T08:04:40 | | default_pool_id | None | | default_tls_container_ref | None | | description | | | id | dcefe896-ae07-4f6d-85b1-569bced0fe3e | | insert_headers | None | | l7policies | | | loadbalancers | f1693481-0e8b-4cea-8b5c-7ad30b2543f8 | | name | listener01 | | operating_status | OFFLINE | | project_id | 03a31c43ede44dcbaacb05c870920e81 | | 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 | 2024-08-07T08:05:03 | | description | | | healthmonitor_id | | | id | eb3a303b-f98b-4694-82be-6e3424880722 | | lb_algorithm | ROUND_ROBIN | | listeners | dcefe896-ae07-4f6d-85b1-569bced0fe3e | | loadbalancers | f1693481-0e8b-4cea-8b5c-7ad30b2543f8 | | members | | | name | pool01 | | operating_status | OFFLINE | | project_id | 03a31c43ede44dcbaacb05c870920e81 | | 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 | +--------------------------------------+-------+--------+-------------------------+----------------+----------+ | c1092c58-068b-488a-b94e-7a7938d71230 | Web02 | ACTIVE | private=192.168.100.135 | CentOS-Stream9 | m1.small | | 2c97ff74-8465-4b04-bb96-3d657a904377 | Web01 | ACTIVE | private=192.168.100.110 | CentOS-Stream9 | m1.small | +--------------------------------------+-------+--------+-------------------------+----------------+----------+ # add web server instances to the pool member [cent@dlp ~(keystone)]$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.135 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.135 | | admin_state_up | True | | created_at | 2024-08-07T08:16:06 | | id | 726a8e41-934b-4947-b31a-f2649c09acf9 | | name | | | operating_status | NO_MONITOR | | project_id | 03a31c43ede44dcbaacb05c870920e81 | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | e32f2074-d33b-4b13-9605-1a29301f93a1 | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack loadbalancer member create --subnet-id private-subnet --address 192.168.100.110 --protocol-port 80 pool01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | address | 192.168.100.110 | | admin_state_up | True | | created_at | 2024-08-07T08:16:24 | | id | 892c7342-79d7-4215-bf2c-7948d37dfa2e | | name | | | operating_status | NO_MONITOR | | project_id | 03a31c43ede44dcbaacb05c870920e81 | | protocol_port | 80 | | provisioning_status | PENDING_CREATE | | subnet_id | e32f2074-d33b-4b13-9605-1a29301f93a1 | | updated_at | None | | weight | 1 | | monitor_port | None | | monitor_address | None | | backup | False | | tags | | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack loadbalancer member list pool01 +--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+ | id | name | project_id | provisioning_status | address | protocol_port | operating_status | weight | +--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+ | 726a8e41-934b-4947-b31a-f2649c09acf9 | | 03a31c43ede44dcbaacb05c870920e81 | ACTIVE | 192.168.100.135 | 80 | NO_MONITOR | 1 | | 892c7342-79d7-4215-bf2c-7948d37dfa2e | | 03a31c43ede44dcbaacb05c870920e81 | ACTIVE | 192.168.100.110 | 80 | NO_MONITOR | 1 | +--------------------------------------+------+----------------------------------+---------------------+-----------------+---------------+------------------+--------+ # create a floating IP on public network [cent@dlp ~(keystone)]$ openstack floating ip create public +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2024-08-07T08:17:19Z | | description | | | dns_domain | | | dns_name | | | fixed_ip_address | None | | floating_ip_address | 10.0.0.203 | | floating_network_id | cedf14f5-e8ef-4577-a226-022f289f45fb | | id | af23c6a0-3d9b-47ee-9b23-dcc8d57dbeef | | name | 10.0.0.203 | | port_details | None | | port_id | None | | project_id | 03a31c43ede44dcbaacb05c870920e81 | | qos_policy_id | None | | revision_number | 0 | | router_id | None | | status | DOWN | | subnet_id | None | | tags | [] | | updated_at | 2024-08-07T08:17:19Z | +---------------------+--------------------------------------+ # 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 $VIPPORT 10.0.0.203
# verify settings to access to the floating IP [cent@dlp ~(keystone)]$ curl 10.0.0.203 Web Server on Instance01 [cent@dlp ~(keystone)]$ curl 10.0.0.203 Web Server on Instance02 [cent@dlp ~(keystone)]$ curl 10.0.0.203 Web Server on Instance01 [cent@dlp ~(keystone)]$ curl 10.0.0.203 Web Server on Instance02 |
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