ingress-nginx logs - lots of weird entries showing up

Question

I'm trying to get my logz.io set up and running and during that process I'm noticing that my ingress controller pod is spitting out a lot of logs. I don't know if its normal or not, but I see a TON of entries in the logs that look like this

[06/Sep/2019:21:27:14 +0000]TCP200004.999
[06/Sep/2019:21:27:17 +0000]TCP200005.000
[06/Sep/2019:21:27:19 +0000]TCP200005.001
[06/Sep/2019:21:27:22 +0000]TCP200004.999
[06/Sep/2019:21:27:24 +0000]TCP200005.001
[06/Sep/2019:21:27:27 +0000]TCP200005.000
.
.
.

Is this normal? Is my ingress configured wrong? I don't want to see thousands of these entries in my logz.io instance.

Answer 1

Usually, these logs records reflect TCP/UDP services configuration for upstream backends, when Nginx Ingress controller applies proxy stream for TCP/UDP connections from relevant ConfigMap by adding specific lua block to the nested Nginx ingress controller Pod.

Find related discussion in #3612 Github thread.