Does a multiple IPs hostname trigger Forwarder round robin?

uchoa — Sat, 01 Oct 2016 03:14:59 GMT

When writing outputs.conf, setting several receivers to "server=" causes the forwarder to round robin through those receivers.

Now consider a hostname that is resolved to 4 different IPs:

$ nslookup myindexers.host.com
Server: #some-server#
Address: #some-address#

Non-authoritative answer:
Name: myindexers.host.com
Address: 10.1.2.1
Name: myindexers.host.com
Address: 10.1.2.2
Name: myindexers.host.com
Address: 10.1.2.3
Name: myindexers.host.com
Address: 10.1.2.4

Would "server=myindexers.host.com:9997", when it comes to round robin, be equivalent to "server=10.1.2.1:9997,server=10.1.2.2:9997,server=10.1.2.3:9997,server=10.1.2.4:9997"?

Thanks,
André Uchôa

Re: Does a multiple IPs hostname trigger Forwarder round robin?

jtacy — Sat, 01 Oct 2016 16:47:37 GMT

Yes, this will do exactly what you want. The forwarder will use the multiple host records it gets back from DNS as a list of receivers to connect to for autoLB. Also see https://docs.splunk.com/Documentation/Forwarder/6.4.3/Forwarder/Configureloadbalancing#Set_up_DNS-based_load_balancing for an example from the docs.

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Does a multiple IPs hostname trigger Forwarder round robin?

Re: Does a multiple IPs hostname trigger Forwarder round robin?