You can enable the integrated load balancer on a vRealize Log Insight cluster to ensure that incoming Ingestion traffic is accepted by vRealize Log Insight even if some vRealize Log Insight nodes become unavailable.

It is highly recommended that you enable the Integrated Load Balancer (ILB) in a vRealize Log Insight cluster environment.

ILB ensures that incoming Ingestion traffic is accepted by vRealize Log Insight even if some vRealize Log Insight nodes become unavailable. ILB also balances incoming traffic fairly among available vRealize Log Insight nodes. vRealize Log Insight clients, using both the Web user interface and ingestion (through Syslog or the Ingestion API), should connect to vRealize Log Insight via the ILB address.

ILB requires that all vRealize Log Insight nodes be on the same Layer 2 network, such as behind the same switch or otherwise able to receive ARP requests from and send ARP requests to each other. The ILB IP address should be set up so that any vRealize Log Insight node can own it and receive traffic for it. Typically, this means that the ILB IP address will be in the same subnet as the physical address of the vRealize Log Insight nodes. After you configure the ILB IP address, try to ping it from a different network to ensure that it is reachable.

To simplify future changes and upgrades, you can have clients point to a FQDN that resolves to the ILB IP address instead of pointing directly to the ILB IP address.

Configure a minimum of three nodes in a vRealize Log Insight cluster.

Verify that all vRealize Log Insight nodes and the specified Integrated Load Balancer IP address are on the same network.

The vRealize Log Insight master and worker nodes must have the same certificates. Otherwise the vRealize Log Insight Agents configured to connect through SSL will reject the connection. When uploading a CA-signed certificate to vRealize Log Insight master and worker nodes, set the Common Name to ILB IP address during certificate generation request. See Generate a Certificate Signing Request.

You must synchronize the time on the Log Insight Linux Agent virtual appliance with an NTP server. See Synchronize the Time on the Log Insight Virtual Appliance.

1

Click the configuration drop-down menu icon and select Administration.

2

Under Management, click Cluster.

3

Under Configuration, select Enable Integrated Load Balancer and enter the virtual IP address to use for integrated load balancing.

Have clients point to a fully qualified domain name instead of directly to the configured ILB IP address.

4

Click Save.