Overview

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A load balancer is mandatory for multi-node setup.

Automation Suite supports two types of configuration for the load balancer, as shown in the following sections.

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Note:

Currently, only Layer 4 (network layer) load balancer is supported.

 

Server and Node Pool configuration

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This is the recommended configuration for the load balancer.

Configuring the backend pool

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You need to create two backend pools that meet the following requirements:

• Server Pool

  • Consists of all the server nodes.
  • There must not be any agent nodes in the Server Pool.

• Node Pool

  • Consists of all the server nodes and agent nodes.

 

Enabling ports on the load balancer

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Ensure you have the following ports enabled on your firewall for the source of load balancer:

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Note:

For any ports other than HTTPS, we recommend it is not exposed outside the cluster. Run your nodes behind a firewall / security group.

If you have a firewall setup in the network, make sure that it has these ports open to allow traffic from those ports.

Refer to the following illustration for more details on the configuration.

 

Configuring the health probes

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Refer to the following illustration for more details on the configuration

 

Alternative configuration

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Important!

This configuration does not have resilience to nodes going down during installation.

If the primary server is down or deleted, cluster configuration needs to be updated.

FQDN of the primary server needs to be remapped to a different machine in the cluster that is available.

Configuring the backend pool

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Create one backend Pool, as follows:

• Create a Node Pool

 

Enabling ports on the load balancer

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Ensure that you have the following ports enabled on your firewall for the source of load balancer:

 

Configuring the health probes

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Refer to the following illustration for more details on the configuration.