Intermittent 503 error in Elasticbeanstalk (Unix domain socket error in ElasticBeanstalk)

sois

7/3/23, 2:46 PM

We are running a web application written in Java(tomcat8) hosted in AWS ElastcBeanStalk

Some weeks back we started getting 503 error randomly

When we checked the elasticbeanstalk-erorr_logs

[Thu Mar 03 13:22:12.906144 2022] [proxy:error] [pid 14882:tid 139757338711808] (13)Permission denied: AH02454: HTTP: attempt to connect to Unix domain socket /var/run/httpd/ (localhost) failed
[Thu Mar 03 13:22:12.906202 2022] [proxy_http:error] [pid 14882:tid 139757338711808] [client 172.31.17.0:61382] AH01114: HTTP: failed to make connection to backend: httpd-UDS, referer: http://our-domain.com/1/callBackLog.jsp
The error logs are suggesting connection error with backend unix socket

When we checked in /var/run/httpd/ folder, there were no unix sockets(.sock files)

But in apache httpd config

<VirtualHost *:80>
  <Proxy *>
    Require all granted
  </Proxy>
  ProxyPass / http://localhost:8080/ retry=0
  ProxyPassReverse / http://localhost:8080/
  ProxyPreserveHost on

  ErrorLog /var/log/httpd/elasticbeanstalk-error_log
</VirtualHost>

the proxy backend is ip address not unix socket

As per the config httpd should connect to backend ip address(localhost:8080) but why is it complaining about unix socket

Have anyone faced similar issues?

0 + 0

server

networking

proxy

apache2

aws

waltinator

7/3/23, 3:05 PM

Are you using a supported Ubuntu release? Which? Read https://askubuntu.com/help/how-to-ask and https://askubuntu.com/help/formatting

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Intermittent 503 error in Elasticbeanstalk (Unix domain socket error in ElasticBeanstalk)

TH: ข้อผิดพลาด 503 เป็นระยะใน Elasticbeanstalk (ข้อผิดพลาดซ็อกเก็ตโดเมน Unix ใน ElasticBeanstalk)

RO: Eroare 503 intermitentă în Elasticbeanstalk (eroare de soclu de domeniu Unix în ElasticBeanstalk)

RU: Периодическая ошибка 503 в Elasticbeanstalk (ошибка сокета домена Unix в ElasticBeanstalk)

VI: Lỗi 503 không liên tục trong Elasticbeanstalk (Lỗi ổ cắm tên miền Unix trong ElasticBeanstalk)

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