Proxy Error Reason: Error reading from remote server

Keywords: Redmine - Installers - Technical issue - Application configuration

bnsupport ID: c28b01b0-d905-ea0e-fe0a-cdc7f60d64b1

Description:
HELP Please, Unfortunately Redmine Administrator left company 4 years ago since then had no issues upgrading until now.

c28b01b0-d905-ea0e-fe0a-cdc7f60d64b1

Proxy Error

The proxy server received an invalid response from an upstream server:
The proxy server could not handle the request

Reason: Error reading from remote server

  1. After a recent upgrade getting users experienced Proxy Error more frequently.
  2. Restarting services helps however Proxy Error come back

[Wed Oct 20 10:04:02.770641 2021] [proxy_http:error] [pid 4776:tid 1284] (OS 10060)A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. : [client x.x.x.x:65396] AH01102: error reading status line from remote server 127.0.0.1:3002, referer: https://x.x.x.x/redmine/my/page
[Wed Oct 20 10:04:02.770641 2021] [proxy:error] [pid 4776:tid 1284] [client x.x.x.x:65396] AH00898: Error reading from remote server returned by /redmine/issues/252597, referer: https://x.x.x.x/redmine/my/page
[Wed Oct 20 10:04:08.379860 2021] [mpm_winnt:notice] [pid 3020:tid 700] AH00422: Parent: Received shutdown signal – Shutting down the server.
[Wed Oct 20 10:04:38.379176 2021] [mpm_winnt:notice] [pid 3020:tid 700] AH00431: Parent: Forcing termination of child process 4776
[Wed Oct 20 10:05:09.325157 2021] [ssl:warn] [pid 6596:tid 736] AH01909: localhost:443:0 server certificate does NOT include an ID which matches the server name
[Wed Oct 20 10:05:09.372031 2021] [ssl:warn] [pid 6596:tid 736] AH01909: localhost:443:0 server certificate does NOT include an ID which matches the server name
[Wed Oct 20 10:05:09.387657 2021] [mpm_winnt:notice] [pid 6596:tid 736] AH00455: Apache/2.4.48 (Win64) OpenSSL/1.1.1k PHP/7.4.20 configured – resuming normal operations
[Wed Oct 20 10:05:09.387657 2021] [mpm_winnt:notice] [pid 6596:tid 736] AH00456: Apache Lounge VC15 Server built: May 26 2021 14:28:02
[Wed Oct 20 10:05:09.387657 2021] [core:notice] [pid 6596:tid 736] AH00094: Command line: ‘E:\Bitnami\redmine-4.2.1-1\apache2\bin\httpd.exe -d E:/Bitnami/redmine-4.2.1-1/apache2 -f E:\Bitnami\redmine-4.2.1-1\apache2\conf\httpd.conf’
[Wed Oct 20 10:05:09.387657 2021] [mpm_winnt:notice] [pid 6596:tid 736] AH00418: Parent: Created child process 5616
[Wed Oct 20 10:05:09.950142 2021] [ssl:warn] [pid 5616:tid 672] AH01909: localhost:443:0 server certificate does NOT include an ID which matches the server name
[Wed Oct 20 10:05:10.215762 2021] [ssl:warn] [pid 5616:tid 672] AH01909: localhost:443:0 server certificate does NOT include an ID which matches the server name
[Wed Oct 20 10:05:10.231389 2021] [mpm_winnt:notice] [pid 5616:tid 672] AH00354: Child: Starting 64 worker threads.
[Wed Oct 20 10:05:11.325130 2021] [proxy:error] [pid 5616:tid 1400] (OS 10061)No connection could be made because the target machine actively refused it. : AH00957: http: attempt to connect to 127.0.0.1:3001 (127.0.0.1) failed
[Wed Oct 20 10:05:11.325130 2021] [proxy:error] [pid 5616:tid 1400] AH00959: ap_proxy_connect_backend disabling worker for (127.0.0.1) for 60s
[Wed Oct 20 10:05:11.325130 2021] [proxy_http:error] [pid 5616:tid 1400] [client x.x.x.x:57561] AH01114: HTTP: failed to make connection to backend: 127.0.0.1
[Wed Oct 20 10:05:11.700133 2021] [proxy:error] [pid 5616:tid 1356] (OS 10061)No connection could be made because the target machine actively refused it. : AH00957: http: attempt to connect to 127.0.0.1:3002 (127.0.0.1) failed
[Wed Oct 20 10:05:11.700133 2021] [proxy:error] [pid 5616:tid 1356] AH00959: ap_proxy_connect_backend disabling worker for (127.0.0.1) for 60s
[Wed Oct 20 10:05:11.700133 2021] [proxy_http:error] [pid 5616:tid 1356] [client 185.191.171.36:52780] AH01114: HTTP: failed to make connection to backend: 127.0.0.1
[Wed Oct 20 10:05:12.340750 2021] [proxy:error] [pid 5616:tid 1400] (OS 10061)No connection could be made because the target machine actively refused it. : AH00957: http: attempt to connect to 127.0.0.1:3002 (127.0.0.1) failed

Hi @mario.oyola,

Did you follow this guide to upgrade:

https://docs.bitnami.com/installer/apps/redmine/administration/upgrade/

Can you try to remove and reinstall the services:

.\serviceinstall.bat REMOVE 

And then

.\serviceinstall.bat INSTALL

Regards,
Michiel

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