API 502 Bad Gateway

Troubleshooting
1

Hi All,

More often I am getting API 502 bad gateway issue. Even my web console UI also not loading. Everytime I need to restart the mattermost service. What will be the issue?

Note: Service is running in ubunut 14.x with nginx.

Thanks
Thileepan

2

Hi Thileepan,

Sounds like the Mattermost server is not starting correctly. Can you post your Mattermost server logs here? It would give me a better idea of what is going on. There should be a logs/mattermost.log in the directory you installed mattermost.

3

Hi there,

Really thanks for your reply. I will send you the log shortly. But before that, I want to let you know that the error goes off when I try to access the API one more time. If the server is hit after a long time then the first try fails always and successive attempts get success.

Thanks
Thileepan

4

Actually, I didn’t see anything weird in the log file today as you mentioned.

Here the log for today:

[2016/02/25 06:06:38 UTC] [EROR] /webdav/: code=404 ip=192.99.144.140
[2016/02/25 09:37:40 UTC] [EROR] /manager/html: code=404 ip=222.186.21.112
[2016/02/25 15:00:59 UTC] [EROR] /manager/html: code=404 ip=189.57.228.200
[2016/02/25 17:34:31 UTC] [EROR] /w00tw00t.at.blackhats.romanian.anti-sec:): code=404 ip=162.213.152.36
[2016/02/25 17:34:31 UTC] [EROR] /phpMyAdmin/scripts/setup.php: code=404 ip=162.213.152.36
[2016/02/25 17:34:31 UTC] [EROR] /phpmyadmin/scripts/setup.php: code=404 ip=162.213.152.36
[2016/02/25 17:34:31 UTC] [EROR] /pma/scripts/setup.php: code=404 ip=162.213.152.36
[2016/02/25 17:34:32 UTC] [EROR] /myadmin/scripts/setup.php: code=404 ip=162.213.152.36
[2016/02/25 17:34:32 UTC] [EROR] /MyAdmin/scripts/setup.php: code=404 ip=162.213.152.36
[2016/02/25 20:29:17 UTC] [EROR] /freepbx/admin/CHANGES: code=404 ip=104.192.0.18
[2016/02/25 20:45:49 UTC] [EROR] /freepbx/admin/CHANGES: code=404 ip=104.192.0.18

My guess is the proxy server (nginx) lost connection with the server. Please let me know if something I have to check from my side.

Thanks
Thileepan