502 Bad Gateway using nginx 1.10.3

PresPhuture's picture
Submitted by PresPhuture on Tue, 12/19/2017 - 13:48 Pro Licensee

Hello Virtualmin Team

I may have a problem. I have updated Webmin/Virtualmin today and it requested a reboot to install the new drivers. After the reboot I tried accessing my WordPress website and it gave me a 502 Bad Gateway. When I went to my nginx error log it gives me the following:

2017/12/19 21:38:58 [error] 1705#1705: *7916 connect() to unix:/var/php-nginx/151160929049397.sock/socket failed (11: Resource temporarily unavailable) while connecting to upstream, client: 185.188.204.6, server: example.co.za, request: "POST /xmlrpc.php HTTP/1.0", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "xx.xxx.xx.xxx"

Afterwards I searched the web for a solution and found that it was an issue regarding the php-fcgi-example-co-za in my Bootup and Shutdown in Webmin. It starts at boot but it isn't running now. I am not sure what to do as it is not running every time I select and start it.

Regards

PresPhuture

Files: 
Image icon screenshot-portall.co_.za-10000-2018-01-08-15-54-01-636_10.png
Status: 
Closed (fixed)

Comments

PresPhuture's picture
Submitted by PresPhuture on Tue, 12/19/2017 - 13:52 Pro Licensee

Project: Virtualmin Virtual Servers » Webmin Core
Assigned: Unassigned »

PresPhuture's picture
Submitted by PresPhuture on Tue, 12/19/2017 - 13:54 Pro Licensee

Assigned: » Unassigned

Submitted by JamieCameron on Tue, 12/19/2017 - 16:01

If you SSH in as root and run /etc/init.d/php-fcgi-example-co-za start , what does it output?

PresPhuture's picture
Submitted by PresPhuture on Tue, 12/19/2017 - 16:23 Pro Licensee

Hi Jamie

The code didn't output anything however my site suddenly works. Thanks a million if that was the purpose.

Regards PresPhuture

PresPhuture's picture
Submitted by PresPhuture on Tue, 12/19/2017 - 16:30 Pro Licensee

Hi Jamie

Now when I try to access the site. It takes longer to load to load a page.

PresPhuture's picture
Submitted by PresPhuture on Tue, 12/19/2017 - 16:57 Pro Licensee

Hi

The 502 Bad Gateway is back again after the site was back online again. Opening a page took more than 5 minutes to load then when I tried to go back to homepage. The 502 message came back. I ran the code and this is what I receive:

root@portall:~# /etc/init.d/php-fcgi-portall-co-za start root@portall:~#

Submitted by JamieCameron on Wed, 12/20/2017 - 17:38

It looks like maybe the PHP FCGId server process crashed. Are there any messages in /var/log/messages that could be related? For example, is your system perhaps low on RAM?

PresPhuture's picture
Submitted by PresPhuture on Thu, 12/21/2017 - 05:36 Pro Licensee

Hi Jamie

I don't have a message folder in my /var/log/ entry. it says no such file or directory. Is there another log file that I need to view or another folder.

PresPhuture's picture
Submitted by PresPhuture on Thu, 12/21/2017 - 17:02 Pro Licensee

Hi Jamie

This is the php7.0-fpm.log file regarding the message you required after doing some research on the statement you said about PHP FCGI server process crashing. Hope this help

[10-Dec-2017 06:25:23] NOTICE: error log file re-opened [11-Dec-2017 20:52:57] WARNING: [pool www] child 1651 exited on signal 9 (SIGKILL) after 286009.883683 seconds from start [11-Dec-2017 20:52:58] NOTICE: [pool www] child 5412 started [11-Dec-2017 20:52:58] WARNING: [pool www] child 1652 exited on signal 9 (SIGKILL) after 286010.835538 seconds from start [11-Dec-2017 21:13:45] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[11-Dec-2017 21:13:45] NOTICE: fpm is running, pid 1728 [11-Dec-2017 21:13:45] NOTICE: ready to handle connections [11-Dec-2017 21:13:45] NOTICE: systemd monitor interval set to 10000ms [12-Dec-2017 16:51:41] NOTICE: Terminating ... [12-Dec-2017 16:51:41] NOTICE: exiting, bye-bye! [12-Dec-2017 16:52:21] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[12-Dec-2017 16:52:21] NOTICE: fpm is running, pid 1626 [12-Dec-2017 16:52:21] NOTICE: ready to handle connections [12-Dec-2017 16:52:21] NOTICE: systemd monitor interval set to 10000ms [14-Dec-2017 21:44:09] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[14-Dec-2017 21:44:09] NOTICE: fpm is running, pid 1661 [14-Dec-2017 21:44:09] NOTICE: ready to handle connections [14-Dec-2017 21:44:09] NOTICE: systemd monitor interval set to 10000ms [17-Dec-2017 20:36:07] WARNING: [pool www] child 1675 exited on signal 9 (SIGKILL) after 255117.290849 seconds from start [17-Dec-2017 20:36:11] NOTICE: [pool www] child 46063 started [17-Dec-2017 20:53:36] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[17-Dec-2017 20:53:36] NOTICE: fpm is running, pid 1668 [17-Dec-2017 20:53:36] NOTICE: ready to handle connections [17-Dec-2017 20:53:36] NOTICE: systemd monitor interval set to 10000ms

[18-Dec-2017 06:25:23] NOTICE: error log file re-opened [18-Dec-2017 20:46:26] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[18-Dec-2017 20:46:27] NOTICE: fpm is running, pid 1638 [18-Dec-2017 20:46:27] NOTICE: ready to handle connections [18-Dec-2017 20:46:27] NOTICE: systemd monitor interval set to 10000ms [19-Dec-2017 14:13:09] NOTICE: Terminating ... [19-Dec-2017 14:13:09] NOTICE: exiting, bye-bye! [19-Dec-2017 14:13:53] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[19-Dec-2017 14:13:54] NOTICE: fpm is running, pid 1666 [19-Dec-2017 14:13:54] NOTICE: ready to handle connections [19-Dec-2017 14:13:54] NOTICE: systemd monitor interval set to 10000ms [19-Dec-2017 20:29:42] NOTICE: Terminating ... [19-Dec-2017 20:29:43] NOTICE: exiting, bye-bye! [19-Dec-2017 20:30:53] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[19-Dec-2017 20:30:54] NOTICE: fpm is running, pid 1775 [19-Dec-2017 20:30:54] NOTICE: ready to handle connections [19-Dec-2017 20:30:54] NOTICE: systemd monitor interval set to 10000ms [20-Dec-2017 20:35:22] WARNING: [pool www] child 1778 exited on signal 9 (SIGKILL) after 86668.248676 seconds from start [20-Dec-2017 20:35:24] NOTICE: [pool www] child 48950 started [20-Dec-2017 20:35:25] WARNING: [pool www] child 1779 exited on signal 9 (SIGKILL) after 86671.576393 seconds from start [20-Dec-2017 20:35:28] NOTICE: [pool www] child 48954 started [20-Dec-2017 20:35:30] WARNING: [pool www] child 48950 exited on signal 9 (SIGKILL) after 7.266509 seconds from start [20-Dec-2017 20:35:30] NOTICE: [pool www] child 48958 started [20-Dec-2017 20:35:31] WARNING: [pool www] child 48954 exited on signal 9 (SIGKILL) after 3.498388 seconds from start [20-Dec-2017 20:35:31] NOTICE: [pool www] child 48960 started [20-Dec-2017 21:05:33] NOTICE: configuration file /etc/php/7.0/fpm/php-fpm.conf test is successful

[20-Dec-2017 21:05:33] NOTICE: fpm is running, pid 1720 [20-Dec-2017 21:05:33] NOTICE: ready to handle connections [20-Dec-2017 21:05:33] NOTICE: systemd monitor interval set to 10000ms

Regards

PresPhuture

Submitted by JamieCameron on Mon, 12/25/2017 - 01:15

It does look like the FPM process is being occasionally terminated. Are you sure you're system isn't low on RAM?

PresPhuture's picture
Submitted by PresPhuture on Mon, 12/25/2017 - 09:59 Pro Licensee

Merry Christmas.

I've asked my ISP to migrate my server from the small VPS with 1 gig RAM to a 2 gig RAM and they did. On virtualmin I use like about 65% of RAM for my server. Is that enough or do I still need more.

My server hardware is:

Intel Xeon E5 2.6GHZ processor

1 vCPU

2GB RAM

100GB HDD Space

Submitted by JamieCameron on Tue, 12/26/2017 - 16:29

2 GB should be enough.

PresPhuture's picture
Submitted by PresPhuture on Mon, 01/08/2018 - 08:00 Pro Licensee

Category: Bug report » Support request

PresPhuture's picture
Submitted by PresPhuture on Mon, 01/08/2018 - 08:07 Pro Licensee

Hi

I am still encounter an issue with my socket. It is now consuming my virtual memory. It is always on 100%. Here is the recent error I've received:

2018/01/08 13:02:57 [error] 1592#1592: *4017 FastCGI sent in stderr: "PHP Warning: Invalid argument supplied for foreach() in /home/portall/public_html/wp-admin/includes/plugin.php on line 1432" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-admin/admin-ajax.php?postviews_id=174&action=postviews&_=1515409377037 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/" 2018/01/08 13:03:50 [error] 1592#1592: *4017 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /john-doe/profile/ HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/" 2018/01/08 13:03:55 [error] 1592#1592: *4017 FastCGI sent in stderr: "PHP Warning: Invalid argument supplied for foreach() in /home/portall/public_html/wp-admin/includes/plugin.php on line 1432" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-admin/admin-ajax.php?postviews_id=0&action=postviews&_=1515409437019 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/john-doe/profile/" 2018/01/08 13:04:03 [error] 1592#1592: *4017 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /john-doe/settings/ HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/john-doe/profile/" 2018/01/08 13:04:10 [error] 1592#1592: *4017 FastCGI sent in stderr: "PHP Warning: Invalid argument supplied for foreach() in /home/portall/public_html/wp-admin/includes/plugin.php on line 1432" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-admin/admin-ajax.php?postviews_id=0&action=postviews&_=1515409450306 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/john-doe/settings/" 2018/01/08 13:04:22 [error] 1592#1592: *4017 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/john-doe/settings/" 2018/01/08 13:04:29 [error] 1592#1592: *4017 FastCGI sent in stderr: "PHP Warning: Invalid argument supplied for foreach() in /home/portall/public_html/wp-admin/includes/plugin.php on line 1432" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-admin/admin-ajax.php?postviews_id=174&action=postviews&_=1515409469535 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/" 2018/01/08 13:07:00 [error] 1592#1592: *4075 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/" 2018/01/08 13:07:06 [error] 1592#1592: *4075 FastCGI sent in stderr: "PHP Warning: Invalid argument supplied for foreach() in /home/portall/public_html/wp-admin/includes/plugin.php on line 1432" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-admin/admin-ajax.php?postviews_id=174&action=postviews&_=1515409626889 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/" 2018/01/08 14:05:23 [error] 1592#1592: *4093 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 139.162.106.181, server: portall.co.za, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://41.185.95.103:443/" 2018/01/08 14:09:51 [error] 1592#1592: *4095 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 66.249.73.192, server: portall.co.za, request: "GET /janedoe/followers/ HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:25:38 [error] 1592#1592: *4099 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 66.249.73.196, server: portall.co.za, request: "GET /tokotoko/followers/ HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:34:26 [error] 1592#1592: *4112 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-login.php?redirect_to=https%3A%2F%2Fwww.portall.co.za%2Fwp-admin%2F&reauth=1 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:34:38 [error] 1592#1592: *4116 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "POST /wp-login.php HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/wp-login.php?redirect_to=https%3A%2F%2Fwww.portall..." 2018/01/08 15:36:42 [error] 1592#1592: *4127 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:38:02 [error] 1592#1592: *4127 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-login.php?redirect_to=https%3A%2F%2Fwww.portall.co.za%2Fwp-admin%2F&reauth=1 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:38:51 [error] 1592#1592: *4135 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:51:04 [error] 1592#1592: *4161 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:51:11 [error] 1592#1592: *4158 FastCGI sent in stderr: "PHP Warning: Division by zero in /home/portall/public_html/wp-content/plugins/super-socializer/super_socializer.php on line 903" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-login.php?redirect_to=https%3A%2F%2Fportall.co.za%2Fwp-admin%2F&reauth=1 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za" 2018/01/08 15:51:23 [error] 1592#1592: *4158 FastCGI sent in stderr: "PHP Warning: Invalid argument supplied for foreach() in /home/portall/public_html/wp-admin/includes/plugin.php on line 1432" while reading response header from upstream, client: 105.15.24.33, server: portall.co.za, request: "GET /wp-admin/admin-ajax.php?postviews_id=174&action=postviews&_=1515419466412 HTTP/1.1", upstream: "fastcgi://unix:/var/php-nginx/151160929049397.sock/socket:", host: "portall.co.za", referrer: "https://portall.co.za/"

Please, please, please help me. I've had this problem since last year. My site is very slow and unstable because of this issue. I really need to launch my site soon or else I'll be bankrupt and forced to close everything.

Regards PresPhuture

Submitted by JamieCameron on Tue, 01/09/2018 - 00:14

Those all look like messages from Wordpress plugins, which we can't do much about.

PresPhuture's picture
Submitted by PresPhuture on Sun, 02/25/2018 - 04:37 Pro Licensee

Status: Active » Closed (fixed)