Version 1.15. This version is no longer supported. For information about how to upgrade to version 1.16, see Upgrade clusters in the latest documentation. For more information about supported and unsupported versions, see the Version history page in the latest documentation.
Distributed Cloud supports two load balancer options: bundled and manual.
Bundled load balancer mode
If you choose bundled load balancing, Google Distributed Cloud deploys Layer 4 load
balancers during cluster installation. An external load balancer isn't needed.
The load balancers can run on a dedicated pool of worker nodes or they can be
located on the same nodes as the control plane.
All nodes that run load balancers must be on the same Layer 2 subnet, because
load balancers broadcast
ARP
messages to announce VIPs.
The following diagram shows an example network topology where bundled load
balancers are located on the control plane nodes.
Manual load balancer mode
If you choose manual load balancing, Google Distributed Cloud doesn't deploy load
balancers. This allows more flexibility than bundled load balancing and there
are no Layer 2 network requirements.
You must configure your control plane nodes' VIPs on an external load balancer
before installing the cluster. After installation, you must pick a load
balancing solution for Kubernetes Services and Ingresses.
The following diagram shows an example network topology of a cluster using
manual load balancing mode with an external load balancer.
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