getting 502 from ingress on my simple signup/login app with mongodb. nginx ingress ip not matching api requests ip

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I started a very simple login and signup app with MongoDB. I got the website working on google cloud but I couldn't set the api request correctly. I am getting 502 bad gateway from nginx. the website is on: http://35.188.82.6 and the github repo is on: https://github.com/damonleelcx/PureSign

2020/10/11 23:44:23 [error] 451#451: *1143751 connect() failed (111: Connection refused) while connecting to upstream, client: 10.128.0.4, server: _, request: "POST /api/users/register HTTP/1.1", upstream: "http://10.0.2.43:3000/api/users/register", host: "35.188.82.6", referrer: "http://35.188.82.6/"

2020/10/11 23:44:23 [error] 451#451: *1143751 connect() failed (111: Connection refused) while connecting to upstream, client: 10.128.0.4, server: _, request: "POST /api/users/register HTTP/1.1", upstream: "http://10.0.1.48:3000/api/users/register", host: "35.188.82.6", referrer: "http://35.188.82.6/"

2020/10/11 23:44:23 [error] 451#451: *1143751 connect() failed (111: Connection refused) while connecting to upstream, client: 10.128.0.4, server: _, request: "POST /api/users/register HTTP/1.1", upstream: "http://10.0.0.80:3000/api/users/register", host: "35.188.82.6", referrer: "http://35.188.82.6/"

10.128.0.4 - - [11/Oct/2020:23:44:23 +0000] "POST /api/users/register HTTP/1.1" 502 552 "http://35.188.82.6/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36" 546 0.004 [default-server-cluster-ip-service-3000] [] 10.0.2.43:3000, 10.0.1.48:3000, 10.0.0.80:3000 0, 0, 0 0.003, 0.001, 0.000 502, 502, 502 1c28cfe67d44718379c08c826559df90

10.0.0.1 - - [11/Oct/2020:23:51:56 +0000] "GET / HTTP/1.1" 200 993 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/601.7.7 (KHTML, like Gecko) Version/9.1.2 Safari/601.7.7" 189 0.002 [default-client-cluster-ip-service-8080] [] 
10.0.2.44:8080 993 0.003 200 875335eee9ecf00b0140ac95af93d3d6

"http://10.0.x.xx:3000/api/users/register" is not matching my server ip "35.188.82.6". BTW, my express server is listening on localhost.

Please help~~~ Thanks!!!

nginx-ingress kubernetes docker node.js mongodb
1 Answers

503 indicates that there is an issue with server/pod not being able to handle the request (usually due to server being overloaded or down).

Ingress -> Service --(Place where the communication issue exists)--> Pod

So your problem lies withing server (expressjs) configuration. The localhost argument here is optional.

Once you remove it, server will then listen on all of the interfaces. This will allow you to get your traffic towards pod.

user_121865850
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