Question

Pod of Ingress Nginx controller generates 400 error continuously.

Posted November 22, 2021 84 views
Nginx

Hi there,

I installed Ingress Nginx controller by 1-click app installation.
But a pod of Ingress Nginx controller generates 400 error every 3 seconds.
Log:

...
10.104.0.4 - - [22/Nov/2021:05:11:55 +0000] "PROXY TCP4 10.104.0.4 10.104.0.3 13254 30719" 400 0 "-" "-" 0 0.000 [] [] - - - - a6c2621ff5139e5e5e7985ca53532cb9                 │
│ 10.104.0.4 - - [22/Nov/2021:05:11:58 +0000] "PROXY TCP4 10.104.0.4 10.104.0.3 13256 30719" 400 0 "-" "-" 0 0.000 [] [] - - - - c30fc815d69a307c72ab76197684f3c3                 │
│ 10.104.0.4 - - [22/Nov/2021:05:12:01 +0000] "PROXY TCP4 10.104.0.4 10.104.0.3 13258 30719" 400 0 "-" "-" 0 0.000 [] [] - - - - ff1a2ee7982f3169c807bc6ee4a215b2                 │
│ 10.104.0.4 - - [22/Nov/2021:05:12:04 +0000] "PROXY TCP4 10.104.0.4 10.104.0.3 13260 30719" 400 0 "-" "-" 0 0.000 [] [] - - - - 0268acf70de314c0d92815ccbfcd8270                 │
│ 
...

But there is no pod that is 10.104.0.4.

% k get pods --all-namespaces -o wide
NAMESPACE       NAME                                             READY   STATUS      RESTARTS   AGE   IP             NODE                       NOMINATED NODE   READINESS GATES
ingress-nginx   ingress-nginx-admission-create-wtjsg             0/1     Completed   0          67m   10.244.0.113   pool-stg-u5m64tn0f-ujgc7   <none>           <none>
ingress-nginx   ingress-nginx-admission-patch-g8nbs              0/1     Completed   1          67m   10.244.0.126   pool-stg-u5m64tn0f-ujgc7   <none>           <none>
ingress-nginx   ingress-nginx-controller-5c8d66c76d-c44xr        1/1     Running     0          67m   10.244.0.39    pool-stg-u5m64tn0f-ujgc7   <none>           <none>
kube-system     cilium-4bnkr                                     1/1     Running     0          69m   10.104.0.3     pool-stg-u5m64tn0f-ujgc7   <none>           <none>
kube-system     cilium-operator-777cf5958d-b4vnj                 1/1     Running     0          74m   10.104.0.3     pool-stg-u5m64tn0f-ujgc7   <none>           <none>
kube-system     coredns-85d9ccbb46-9qrn2                         1/1     Running     0          74m   10.244.0.92    pool-stg-u5m64tn0f-ujgc7   <none>           <none>
kube-system     coredns-85d9ccbb46-wv2j4                         1/1     Running     0          74m   10.244.0.52    pool-stg-u5m64tn0f-ujgc7   <none>           <none>
kube-system     csi-do-node-mfwfl                                2/2     Running     0          69m   10.104.0.3     pool-stg-u5m64tn0f-ujgc7   <none>           <none>
kube-system     do-node-agent-z87wj                              1/1     Running     0          69m   10.104.0.3     pool-stg-u5m64tn0f-ujgc7   <none>           <none>
kube-system     kube-proxy-stvs2                                 1/1     Running     0          69m   10.104.0.3     pool-stg-u5m64tn0f-ujgc7   <none>           <none>

Why is this happened?
I can’t use Ingress because of this error.
Please give any advices.

Thank you in advance.

The step I did

  1. Create cluster
  2. Install Ingress Nginx Controller by Install 1-click app
  3. Edit load balancer’s setting (Forwarding rules) To: HTTP on port 80 HTTP on port 30719 HTTPS on port 443 HTTP on port 32491
  4. (Install postgres operator)
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