Upstream error

Vivek Solanki vivek.solanki at
Tue May 7 16:02:51 UTC 2019

Hi team,

Hope you all are doing well.

I need some assistance regarding nginx configuration. I am using nginx service as proxy_pass to other URL's

When I am performing load testing on nginx server with high no. of requests. For few tests it is running fine, But after some time it shows below upstream error message (5XX errors).

2019/05/07 04:20:38 [error] 18168#0: *684822 no live upstreams while connecting to upstream, client: XX.XX.XX.XX, server: _, request: "GET https://XXXXXXXXXXXXXXXXXXXXXX/XXXXXXXXXXXXXXXX/XXXXXXXXXXX/XXXXX HTTP/1.1", upstream: " https://XXXXXXXXXXXXXXXXXXXXXX/XXXXXXXXXXXXXXXX/XXXXXXXXXXX/XXXXX ", host: " "
2019/05/07 04:20:38 [error] 18168#0: *684820 connect() failed (110: Connection timed out) while connecting to upstream, client: XX.XX.XX.XX, server: _, request: "GET /XXXXXXXXXXXXXXXXXX/XXXXXXXXXXX/XXXXXXXXX/XXXXXXXXXXX HTTP/1.1", upstream: "https://XXXXXXXXXXXXXXXXXXXXXX/XXXXXXXXXXXXXXXX/XXXXXXXXXXX/XXXXX", host: ""

After restarting nginx servers, it will again work fine. But this is not a proper solution.

Please someone help me to resolve this issue permanently. Let me know if any further details required from my side.

Vivek Solanki
CloudOps Engineer
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