IT 직딩 아빠의 육아 & 여행

Client and Load Balancer could get HTTP 502 error. So, In my opinion, there are two solutions. (You should do a lot of test for this) 1. For Long Transaction, Load Balancer's Idle Timeout < Target Server's Keepalive Time-out     -> I think.. difference of about 10 seconds is good 2. Other case, Disable Target Server's Keepalive. You can check this with TCP dump and Wireshark.     [Ex - if you use 8001 as service port..]     ->  tcpdump -i ens3 tcp port 8001 -G3600 -w %Y%m%d%H%M%S.pcap     -> Open above XXX.pcap file with Wireshark     -> You can see "Connection: close" as bellow.. Thanks.

In Oracle Cloud Load Balancer logs, you can check "backendStatusCode": "502, 200". Please refer to as following as bellow picture. It means that Oracle Cloud Load Balancer have above function. I did not get any docs from oracle, but I tested it.