Using the weight feature on a Load Balancer member

There are two ways to access the Horizon interface:

• Log in with OVHcloud Single Sign-On: use the Horizon link in the left-hand menu under "Management Interfaces" after opening your Public Cloud project in the OVHcloud Control Panel.
• To log in with a specific OpenStack user: Open the Horizon login page and enter the OpenStack user credentials previously created, then click on Connect.

Select the appropriate region from the top left drop-down menu.

In the left tab, click the Network tab then on Load Balancers.

Click the load balancer concerned.

In the tab, click on Pools and then on the pool in which the member is.

In the tab, click on Members and then on Edit Member.

Edit the Weight to 0, then click on Update.

To set the weight of a member to 0, run the following commmand:

$ openstack loadbalancer member set --weight 0 <pool> <member_0>

To check the member's status, click on Network in the left tab then on Load Balancers.

Click on the load balancer concerned.

In the tab, click on Pools and then on the pool in which the member is.

Click the Members tab:

You can check the member’s status using the following command:

$ openstack loadbalancer member list <pool_name>

You should see:

---------------------------------------------------------------------------------------------------
id                                   name       provisioning_status  operating_status   weight
---------------------------------------------------------------------------------------------------
27cfe834-7fef-4548-b71b-fa0ce67222f8 member_1   ACTIVE               ONLINE             1
118756ba-2cae-4141-b9c2-8b18b120c8dc member_0   ACTIVE               DRAINING           0
---------------------------------------------------------------------------------------------------

Create a .tf file to manage a V2 members resource within OpenStack. For example:

resource "openstack_lb_monitor_v2" "monitor_1" {
 pool_id     = "<POOL_ID>"
 member {
 address       = "10.0.0.158"
 protocol_port = 8080
 weight = 0
 }

 member {
 address       = "10.0.0.200"
 protocol_port = 8080
 weight = 1
 }
}

Replace <POOL_ID> with the ID of your Pool. For more details on the available options for this resource, refer to the official documentation for the openstack_lb_monitor_v2 resource on the Terraform Registry.

Applying the Configuration

To apply your Terraform configuration:

• Run terraform init to initialize the Terraform working directory.
• Run terraform apply to apply the changes defined in your configuration.

Verification

After running terraform apply, Terraform will provide you with a summary of the resources created, modified, or deleted. This confirms the creation or update of your Health Monitor.

Log in to the Horizon interface.

Select the appropriate region from the top left drop-down menu.

In the left tab, click on Network then on click Load Balancers.

Click the load balancer concerned.

In the tab, click on Pools and then on the pool in which the member is.

Click on the Members tab, and then on Edit Member next to the corresponding member.

You can edit the Weight to 1 then click on Update

To restore traffic from being routed to a specific member, set its weight to 1:

$ openstack loadbalancer member set --weight 1 <pool> <member_0>

Create a .tf file to manage a V2 members resource within OpenStack. For example:

resource "openstack_lb_monitor_v2" "monitor_1" {
 pool_id     = "<POOL_ID>"
 member {
 address       = "10.0.0.158"
 protocol_port = 8080
 weight = 1
 }

 member {
 address       = "10.0.0.200"
 protocol_port = 8080
 weight = 1
 }
}

Replace <POOL_ID> with the ID of your Pool. For more details on the available options for this resource, refer to the official documentation for the openstack_lb_monitor_v2 resource on the Terraform Registry.

Applying the Configuration

To apply your Terraform configuration:

• Run terraform init to initialize the Terraform working directory.
• Run terraform apply to apply the changes defined in your configuration.

Verification

After running terraform apply, Terraform will provide you with a summary of the resources created, modified, or deleted. This confirms the creation or update of your Health Monitor.