Nginx i get "504 Gateway Time-out"

giahancute2013 · Jan 10, 2017

Please fill in any relevant information that applies to you:

Centmin Mod Version Installed: Centmin Mod Menu 123.09beta01

Nginx Version Installed: 1.11.8

PHP Version Installed: PHP 5.6.26 (cli) (built: Oct 10 2016 21:53:35)

MariaDB MySQL Version Installed:10.0.28-MariaDB

When was last time updated Centmin Mod code base ? : i don't remeber

I get this note "

Code:

504 Gateway Time-out nginx

when i curl upload too images.

Thank you

regards,

eva2000 · Jan 11, 2017

What exact curl command you use to upload images via what web app/script ? These uploaded into a mysql database or filesystem hosted ?

Centmin Mod is provide as is, so short of scripted related bugs or issues, any further optimisation to the web stack components - nginx, php-fpm, mariadb mysql, csf firewall etc or web app specific configurations are left to the Centmin Mod user to deal with. So I do not provide any free support for such.

Nginx 502 or 504 Bad Gateway Errors

Bad gateway 502 /504 timeouts are usually related to Nginx timing out waiting on PHP-FPM to respond as PHP-FPM is overloaded or overwhelmed with requests, so may need to tune PHP-FPM values. It also maybe due to PHP-FPM in turn being queued and backed up waiting on MariaDB MySQL server to respond - so also need to look at MySQL.

You'll need to tune your PHP-FPM settings with php-fpm main pool config file at /usr/local/etc/php-fpm.conf (overview of config files) and this is left up to end user to do but here's a thread for starters to enable php status page output outlined at

http://centminmod.com/phpfpm.html#browserstatus and

https://community.centminmod.com/threads/pm-max_children.479/ and

https://community.centminmod.com/threads/warning-pool-www-server-reached-max_children-setting-50-consider-raising-it.791/ which outlines the official PHP-FPM config documentation as well.

Checking PHP-FPM etc logs

You'll also need to check into your PHP-FPM, Nginx and MariaDB logs which you can find as outlined at How to troubleshoot Centmin Mod initial install issues

Server logs include Nginx, PHP-FPM, MariaDB MySQL error logs as well as others. You can find your Centmin Mod install/menu logs at FAQ 7 and server logs at FAQ 19 at Centmin Mod FAQ (most up to date info in FAQ so always read that first). Spoiler tag below has info too but may not be up to date.

Some of Centmin Mod's installed software will have their own access and error logs which maybe useful for diagnosing errors or give info, notes, or warning notices.

Note: There's no support provided by me for diagnosing such errors which may occur for various reasons including misconfiguration of installed php/mysql scripts or applications.

In SSH2 telnet you can use tail command to view the last X number of lines in the file.

For example for viewing last 10 lines in the file for:

For Nginx access and error logs:
Code:
  tail -10 /usr/local/nginx/logs/access.log
  tail -10 /usr/local/nginx/logs/error.log
For specific domainname.com access and error log:
Code:
  tail -10 /home/nginx/domains/domainname.com/log/access.log
  tail -10 /home/nginx/domains/domainname.com/log/error.log
For other system error logs located at /var/log:

list /var/log files in ascending time order so the most recently modified files are at the bottom
Code:
  ls -lhrt /var/log
Code:
total 2.7M
-rw------- 1 root  root    0 Aug 29 15:33 tallylog
-rw------- 1 root  root    0 Aug 29 15:33 spooler
drwx------ 3 root  root 4.0K Aug 29 15:35 samba
drwxr-xr-x 2 root  root 4.0K Aug 29 15:35 mail
-rw-r--r-- 1 root  500     0 Oct  8 18:13 dmesg.old
-rw------- 1 root  500     0 Oct  8 18:13 boot.log
-rw-r--r-- 1 root  500     0 Oct  8 18:14 dmesg
drwx------ 2 root  root 4.0K Oct  8 18:14 httpd
drwxr-xr-x 2 root  root 4.0K Oct  8 19:08 php-fpm
-rw-rw---- 1 mysql root 2.3K Oct  9 12:38 mysqld.log
-rw------- 1 root  root 9.2K Oct 26 10:48 yum.log
-rw------- 1 root  utmp  94K Nov  7 22:59 btmp
drwxr-xr-x 2 root  root 4.0K Nov  8 00:00 sa
-rw------- 1 root  root 269K Nov  8 21:39 messages
-rw------- 1 root  root 110K Nov  8 23:08 secure
-rw-rw-r-- 1 root  utmp  43K Nov  8 23:08 wtmp
-rw-r--r-- 1 root  root 144K Nov  8 23:08 lastlog
-rw------- 1 root  root  69K Nov  8 23:08 lfd.log
-rw------- 1 root  root 332K Nov  8 23:08 maillog
-rw------- 1 root  500  1.6M Nov  8 23:10 cron
For PHP-FPM error log:
Code:
  tail -10 /var/log/php-fpm/www-error.log
and/or
Code:
  /var/log/php-fpm/www-php.error.log
For MySQL / MariaDB error log:
Code:
  tail -10 /var/log/mysqld.log
For CSF firewall LFD log:
Code:
  tail -10 /var/log/lfd.log
For Mail log:
Code:
  tail -10 /var/log/maillog
For Cron job logs:
Code:
  tail -10 /var/log/cron
How to edit php.ini and php-fpm configuration files ?

Centmin Mod install created command short cuts outlined here to allow you to quickly edit your /usr/local/lib/php.ini file and your /usr/local/etc/php-fpm.conf file. Full list of command shortcuts below:

Edit php.ini = phpedit ( /usr/local/lib/php.ini )

Edit my.cnf = mycnf ( /etc/my.cnf )

Edit php-fpm.conf = fpmconf ( /usr/local/etc/php-fpm.conf )

Edit nginx.conf = nginxconf ( /usr/local/nginx/conf/nginx.conf )

Edit (nginx) virtual.conf = vhostconf - only edits /usr/local/nginx/conf/conf.d/virtual.conf not the additional vhost domain.com.conf files added later

Edit (nginx) php.conf = phpinc ( /usr/local/nginx/conf/php.conf )

Edit (nginx) drop.conf = dropinc ( /usr/local/nginx/conf/drop.conf )

Edit (nginx) staticfiles.conf = statfilesinc ( /usr/local/nginx/conf/staticfiles.conf )

nginx stop/start/restart = ngxstop/ngxstart/ngxrestart

php-fpm stop/start/restart = fpmstop/fpmstart/fpmrestart

mysql stop/start/restart = mysqlstop/mysqlstart/mysqlrestart

nginx + php-fpm stop/start/restart = npstop/npstart/nprestart

memcached stop/start/restart =memcachedstop/memcachedstart/memcachedrestart

csf stop/start/restart = csfstop/csfstart/csfrestart

Troubleshooting Tools

However, there's many linux tools and scripts that can help you figure out what was causing the load issues and when.

Tools and commands you will want to read up on and learn for basic system admin tasks and troubleshooting.

20 Command Line Tools to Monitor Linux Performance

13 Linux Performance Monitoring Tools - Part 2

80 Linux Monitoring Tools for SysAdmins - Server Density Blog

Amazing ! 25 Linux Performance Monitoring Tools

20 Linux System Monitoring Tools Every SysAdmin Should Know

How to monitor disk I/O in Linux from command line - Xmodulo

10 Useful Sar (Sysstat) Examples for UNIX / Linux Performance Monitoring

Generate CPU, Memory & I/O report using SAR command

My mysqlmymonlite.sh script can help with that mysqlmymonlite.sh README text file has instructions for setting up a cronjob to email you reports i.e. every 10/15min or every hour.

Notes:

Centmin Mod already installed Glances tool. It can be invoked from SSH command glances or top2. Official Glances site at nicolargo.github.io/glances/ and documentation here.

However, Centmin Mod users are free to help each other out and ask questions or give answers on this community forum. My hopes are that this community forum evolves so that more veteran long time Centmin Mod users help new Centmin Mod users out

giahancute2013 · Jan 11, 2017

Code:

[root@li866-82 centminmod]# tail -10 /usr/local/nginx/logs/error.log
2017/01/10 11:15:55 [alert] 29504#0: *4027 open socket #3 left in connection 32
2017/01/10 11:15:55 [alert] 29504#0: aborting
2017/01/10 11:15:55 [emerg] 539#0: dlopen() "/usr/local/nginx/modules/ngx_http_image_filter_module.so" failed (/usr/local/nginx/modules/ngx_http_image_filter_module.so: cannot open shared object file: No such file or directory) in /usr/local/nginx/conf/dynamic-modules.conf:1
2017/01/10 11:16:02 [emerg] 543#0: dlopen() "/usr/local/nginx/modules/ngx_http_image_filter_module.so" failed (/usr/local/nginx/modules/ngx_http_image_filter_module.so: cannot open shared object file: No such file or directory) in /usr/local/nginx/conf/dynamic-modules.conf:1
2017/01/10 11:28:05 [emerg] 14609#0: dlopen() "/usr/local/nginx/modules/ngx_http_image_filter_module.so" failed (/usr/local/nginx/modules/ngx_http_image_filter_module.so: cannot open shared object file: No such file or directory) in /usr/local/nginx/conf/dynamic-modules.conf:1
[root@li866-82 centminmod]#

Code:

[root@li866-82 centminmod]# tail -10 /home/nginx/domains/domain.com/log/error.log
2017/01/10 11:29:01 [error] 14706#14706: *12 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 11:34:02 [error] 14706#14706: *12 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 12:06:57 [error] 15696#15696: *30 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 12:12:09 [error] 15696#15696: *63 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 12:16:46 [error] 15696#15696: *63 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 12:30:31 [error] 15696#15696: *556 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 12:32:06 [error] 15696#15696: *556 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 12:38:30 [error] 15696#15696: *686 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 14:54:52 [error] 15696#15696: *3076 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/"
2017/01/10 22:44:40 [error] 15696#15696: *6425 directory index of "/home/nginx/domains/domain.com/public/" is forbidden, client: 198.199.88.169, server: domain.com, request: "GET / HTTP/1.1", host: "domain.com"

Code:

[root@li866-82 php-fpm]# tail -10 www-error.log
[10-Jan-2017 12:20:21] WARNING: [pool www] child 16001, script '/home/nginx/domains/domain.com/public/t/index.php' (request: "POST /t/index.php") execution timed out (394.949080 sec), terminating
[10-Jan-2017 12:20:21] WARNING: [pool www] child 16001 exited on signal 15 (SIGTERM) after 394.953550 seconds from start
[10-Jan-2017 12:42:01] WARNING: [pool www] child 16497, script '/home/nginx/domains/domain.com/public/t/index.php' (request: "POST /t/index.php") execution timed out (390.576814 sec), terminating
[10-Jan-2017 12:42:01] WARNING: [pool www] child 16497 exited on signal 15 (SIGTERM) after 390.580685 seconds from start
[10-Jan-2017 13:31:03] WARNING: [pool www] server reached max_children setting (4), consider raising it
[10-Jan-2017 18:07:20] WARNING: [pool www] server reached max_children setting (4), consider raising it
[10-Jan-2017 18:32:06] WARNING: [pool www] server reached max_children setting (4), consider raising it
[10-Jan-2017 18:35:00] WARNING: [pool www] server reached max_children setting (4), consider raising it
[10-Jan-2017 18:36:00] WARNING: [pool www] server reached max_children setting (4), consider raising it
[10-Jan-2017 23:33:39] WARNING: [pool www] server reached max_children setting (4), consider raising it

Code:

tail -10 www-php.error.log
[10-Jan-2017 18:45:54 UTC] PHP Warning:  imagecreatefromjpeg(): gd-jpeg: JPEG library reports unrecoverable error:  in /home/nginx/domains/domain.com/public/image/p.php on line 16
[10-Jan-2017 18:45:54 UTC] PHP Warning:  imagecreatefromjpeg(): 'temp/7dc76c6c6f721238f02b8aeef60598e8.jpg' is not a valid JPEG file in /home/nginx/domains/domain.com/public/image/p.php on line 16
[10-Jan-2017 18:45:54 UTC] PHP Warning:  imagejpeg() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 17
[10-Jan-2017 18:45:54 UTC] PHP Warning:  imagedestroy() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 18
[10-Jan-2017 18:45:55 UTC] PHP Warning:  imagecreatefromjpeg(): gd-jpeg: JPEG library reports unrecoverable error:  in /home/nginx/domains/domain.com/public/image/p.php on line 16
[10-Jan-2017 18:45:55 UTC] PHP Warning:  imagecreatefromjpeg(): 'temp/7dc76c6c6f721238f02b8aeef60598e8.jpg' is not a valid JPEG file in /home/nginx/domains/domain.com/public/image/p.php on line 16
[10-Jan-2017 18:45:55 UTC] PHP Warning:  imagejpeg() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 17
[10-Jan-2017 18:45:55 UTC] PHP Warning:  imagedestroy() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 18
[10-Jan-2017 20:11:35 UTC] PHP Notice:  getimagesize(): Read error! in /home/nginx/domains/domain.com/public/image/p.php on line 23
[10-Jan-2017 20:11:35 UTC] PHP Warning:  unlink(temp/temp/d6b389627ee7a5da37795f414d2ae43b.jpg): No such file or directory in /home/nginx/domains/domain.com/public/image/p.php on line 26

Code:

tail -10 localhost.error.log
2017/01/10 11:49:55 [error] 14706#14706: *67 open() "/usr/local/nginx/html/manager/html" failed (2: No such file or directory), client: 201.183.237.8, server: li866-82.members.linode.com, request: "GET /manager/html HTTP/1.1", host: "139.162.24.82"
2017/01/10 12:42:49 [error] 15696#15696: *774 open() "/usr/local/nginx/html/manager/html" failed (2: No such file or directory), client: 201.183.237.8, server: li866-82.members.linode.com, request: "GET /manager/html HTTP/1.1", host: "139.162.24.82"
2017/01/10 21:37:45 [error] 15696#15696: *6298 open() "/usr/local/nginx/html/phpmyadmin" failed (2: No such file or directory), client: 222.186.58.12, server: li866-82.members.linode.com, request: "GET /phpmyadmin HTTP/1.1", host: "139.162.24.82", referrer: "http://139.162.24.82/phpmyadmin"
2017/01/11 00:21:29 [error] 15696#15696: *6662 open() "/usr/local/nginx/html/muieblackcat" failed (2: No such file or directory), client: 46.165.221.74, server: li866-82.members.linode.com, request: "GET /muieblackcat HTTP/1.1", host: "139.162.24.82"

Code:

[root@li866-82 log]# tail -10 mysqld.log
2017-01-05 11:05:35 7fe6ef3ff700  InnoDB: Rollback of non-prepared transactions completed
170105 11:05:35 [Note] InnoDB: zip_dict and zip_dict_cols system tables created.
170105 11:05:35 [Note] InnoDB: Waiting for purge to start
170105 11:05:35 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.32-79.0 started; log sequence number 12215199
2017-01-05 11:05:35 7fe6ebbf8700 InnoDB: Loading buffer pool(s) from .//ib_buffer_pool
2017-01-05 11:05:35 7fe6ebbf8700 InnoDB: Buffer pool(s) load completed at 170105 11:05:35
170105 11:05:35 [Note] Plugin 'FEEDBACK' is disabled.
170105 11:05:35 [Note] Server socket created on IP: '::'.
170105 11:05:35 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.0.28-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Server

Code:

[root@li866-82 log]# tail -10 /var/log/lfd.log
Jan 11 00:00:02 li866-82 lfd[23798]: Exploit Tracking...
Jan 11 00:00:02 li866-82 lfd[23798]: Directory Watching...
Jan 11 00:00:02 li866-82 lfd[23798]: Temp to Perm Block Tracking...
Jan 11 00:00:02 li866-82 lfd[23798]: Account Tracking...
Jan 11 00:00:02 li866-82 lfd[23798]: SSH Tracking...
Jan 11 00:00:02 li866-82 lfd[23798]: SU Tracking...
Jan 11 00:00:02 li866-82 lfd[23798]: Watching /var/log/messages...
Jan 11 00:00:02 li866-82 lfd[23798]: Watching /var/log/secure...
Jan 11 00:00:02 li866-82 lfd[23798]: Watching /var/log/customlog...
Jan 11 00:00:02 li866-82 lfd[23798]: Watching /var/log/httpd/error_log...

Code:

[root@li866-82 log]# tail -10 /var/log/cron
Jan 11 00:01:01 li866-82 CROND[23812]: (root) CMD (run-parts /etc/cron.hourly)
Jan 11 00:01:01 li866-82 run-parts(/etc/cron.hourly)[23812]: starting 0anacron
Jan 11 00:01:01 li866-82 anacron[23821]: Anacron started on 2017-01-11
Jan 11 00:01:01 li866-82 anacron[23821]: Normal exit (0 jobs run)
Jan 11 00:01:01 li866-82 run-parts(/etc/cron.hourly)[23823]: finished 0anacron
Jan 11 00:10:01 li866-82 CROND[23872]: (root) CMD (/home/base/backup_rotation.sh)
Jan 11 00:10:01 li866-82 CROND[23873]: (root) CMD (/usr/lib64/sa/sa1 1 1)
Jan 11 00:11:01 li866-82 CROND[23910]: (root) CMD (/usr/local/src/centminmod/tools/autoprotect.sh 2>/dev/null)
Jan 11 00:20:01 li866-82 CROND[24034]: (root) CMD (/usr/lib64/sa/sa1 1 1)
Jan 11 00:30:01 li866-82 CROND[24206]: (root) CMD (/usr/lib64/sa/sa1 1 1)

that's all my log.

eva2000 · Jan 11, 2017

giahancute2013 said: ↑

[root@li866-82 centminmod]# tail -10 /usr/local/nginx/logs/error.log 2017/01/10 11:15:55 [alert] 29504#0: *4027 open socket #3 left in connection 32 2017/01/10 11:15:55 [alert] 29504#0: aborting 2017/01/10 11:15:55 [emerg] 539#0: dlopen() "/usr/local/nginx/modules/ngx_http_image_filter_module.so" failed (/usr/local/nginx/modules/ngx_http_image_filter_module.so: cannot open shared object file: No such file or directory) in /usr/local/nginx/conf/dynamic-modules.conf:1 2017/01/10 11:16:02 [emerg] 543#0: dlopen() "/usr/local/nginx/modules/ngx_http_image_filter_module.so" failed (/usr/local/nginx/modules/ngx_http_image_filter_module.so: cannot open shared object file: No such file or directory) in /usr/local/nginx/conf/dynamic-modules.conf:1 2017/01/10 11:28:05 [emerg] 14609#0: dlopen() "/usr/local/nginx/modules/ngx_http_image_filter_module.so" failed (/usr/local/nginx/modules/ngx_http_image_filter_module.so: cannot open shared object file: No such file or directory) in /usr/local/nginx/conf/dynamic-modules.conf:1 [root@li866-82 centminmod]#[/alert][/alert][/QUOTE]
for this one try re-running centmin.sh menu option 4 to recompile nginx 1.11.8 again and it should output a nginx upgrade log at end so you can verify all was completed

[QUOTE="giahancute2013, post: 42864, member: 1081"][root@li866-82 centminmod]# tail -10 /home/nginx/domains/domain.com/log/error.log 2017/01/10 11:29:01 [error] 14706#14706: *12 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 11:34:02 [error] 14706#14706: *12 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 12:06:57 [error] 15696#15696: *30 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 12:12:09 [error] 15696#15696: *63 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 12:16:46 [error] 15696#15696: *63 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 12:30:31 [error] 15696#15696: *556 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 12:32:06 [error] 15696#15696: *556 open() "/home/nginx/domains/domain.com/public/t/images/checkmark.png" failed (2: No such file or directory), client: 113.170.234.216, server: domain.com, request: "GET /t/images/checkmark.png HTTP/2.0", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 12:38:30 [error] 15696#15696: *686 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 14:54:52 [error] 15696#15696: *3076 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 113.170.234.216, server: domain.com, request: "POST /t/ HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com", referrer: "https://domain.com/t/" 2017/01/10 22:44:40 [error] 15696#15696: *6425 directory index of "/home/nginx/domains/domain.com/public/" is forbidden, client: 198.199.88.169, server: domain.com, request: "GET / HTTP/1.1", host: "domain.com"[/QUOTE]
probably your 504 times outs come from this, upload taking longer to do and queues up and hogs php-fpm until it times out or could be a symptom of php-fpm slowness overloading.Probably need to customise and edit php setting for max_execution_time etc as outlined at PHP-FPM - CentminMod.com LEMP Nginx web stack for CentOS

[QUOTE="giahancute2013, post: 42864, member: 1081"][10-Jan-2017 13:31:03] WARNING: [pool www] server reached max_children setting (4), consider raising it [10-Jan-2017 18:07:20] WARNING: [pool www] server reached max_children setting (4), consider raising it [10-Jan-2017 18:32:06] WARNING: [pool www] server reached max_children setting (4), consider raising it [10-Jan-2017 18:35:00] WARNING: [pool www] server reached max_children setting (4), consider raising it [10-Jan-2017 18:36:00] WARNING: [pool www] server reached max_children setting (4), consider raising it [10-Jan-2017 23:33:39] WARNING: [pool www] server reached max_children setting (4), consider raising it[/QUOTE]

You'll need to tune your PHP-FPM settings with php-fpm main pool config file at /usr/local/etc/php-fpm.conf (overview of config files) and this is left up to end user to do but here's a thread for starters to enable php status page output outlined at
[LIST]
[*]PHP-FPM - CentminMod.com LEMP Nginx web stack for CentOS and
[*]https://community.centminmod.com/threads/pm-max_children.479/ and
[*]https://community.centminmod.com/threads/warning-pool-www-server-reached-max_children-setting-50-consider-raising-it.791/ which outlines the official PHP-FPM config documentation as well.
[/LIST]
[QUOTE="giahancute2013, post: 42864, member: 1081"]tail -10 www-php.error.log [10-Jan-2017 18:45:54 UTC] PHP Warning: imagecreatefromjpeg(): gd-jpeg: JPEG library reports unrecoverable error: in /home/nginx/domains/domain.com/public/image/p.php on line 16 [10-Jan-2017 18:45:54 UTC] PHP Warning: imagecreatefromjpeg(): 'temp/7dc76c6c6f721238f02b8aeef60598e8.jpg' is not a valid JPEG file in /home/nginx/domains/domain.com/public/image/p.php on line 16 [10-Jan-2017 18:45:54 UTC] PHP Warning: imagejpeg() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 17 [10-Jan-2017 18:45:54 UTC] PHP Warning: imagedestroy() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 18 [10-Jan-2017 18:45:55 UTC] PHP Warning: imagecreatefromjpeg(): gd-jpeg: JPEG library reports unrecoverable error: in /home/nginx/domains/domain.com/public/image/p.php on line 16 [10-Jan-2017 18:45:55 UTC] PHP Warning: imagecreatefromjpeg(): 'temp/7dc76c6c6f721238f02b8aeef60598e8.jpg' is not a valid JPEG file in /home/nginx/domains/domain.com/public/image/p.php on line 16 [10-Jan-2017 18:45:55 UTC] PHP Warning: imagejpeg() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 17 [10-Jan-2017 18:45:55 UTC] PHP Warning: imagedestroy() expects parameter 1 to be resource, boolean given in /home/nginx/domains/domain.com/public/image/p.php on line 18 [10-Jan-2017 20:11:35 UTC] PHP Notice: getimagesize(): Read error! in /home/nginx/domains/domain.com/public/image/p.php on line 23 [10-Jan-2017 20:11:35 UTC] PHP Warning: unlink(temp/temp/d6b389627ee7a5da37795f414d2ae43b.jpg): No such file or directory in /home/nginx/domains/domain.com/public/image/p.php on line 26
Click to expand...

you use imagemagick php features ? looks like someone tried to upload an invalid format image.. double check and run centmin.sh menu option 15 to ensure latest imagemagick system package + latest imagick php extension is used

giahancute2013 said: ↑

tail -10 localhost.error.log 2017/01/10 11:49:55 [error] 14706#14706: *67 open() "/usr/local/nginx/html/manager/html" failed (2: No such file or directory), client: 201.183.237.8, server: li866-82.members.linode.com, request: "GET /manager/html HTTP/1.1", host: "139.162.24.82" 2017/01/10 12:42:49 [error] 15696#15696: *774 open() "/usr/local/nginx/html/manager/html" failed (2: No such file or directory), client: 201.183.237.8, server: li866-82.members.linode.com, request: "GET /manager/html HTTP/1.1", host: "139.162.24.82" 2017/01/10 21:37:45 [error] 15696#15696: *6298 open() "/usr/local/nginx/html/phpmyadmin" failed (2: No such file or directory), client: 222.186.58.12, server: li866-82.members.linode.com, request: "GET /phpmyadmin HTTP/1.1", host: "139.162.24.82", referrer: "http://139.162.24.82/phpmyadmin" 2017/01/11 00:21:29 [error] 15696#15696: *6662 open() "/usr/local/nginx/html/muieblackcat" failed (2: No such file or directory), client: 46.165.221.74, server: li866-82.members.linode.com, request: "GET /muieblackcat HTTP/1.1", host: "139.162.24.82"
Click to expand...

if those aren't valid directories then nothing to worry about just folks probing and or scanning for common directories for your main hostname vhost site

rest looks good so just need to tweak and tune your php-fpm settings through trial and error

one done, let me know and i'll remove some of these posts contents as they contain your server hostname and ip

giahancute2013 · Jan 11, 2017

I get this note "
Code:
504 Gateway Time-out
nginx
when i curl upload too images.

i fixed "imagemagick" but i think it's not a problem 504 gateway time-out.

and how can i find " request_terminate_timeout " ? i want to set value to 600s

eva2000 · Jan 11, 2017

giahancute2013 said: ↑

and how can i find " request_terminate_timeout " ? i want to set value to 600s
Click to expand...

That value is disabled by default PHP: Configuration - Manual.

request_terminate_timeout mixed

The timeout for serving a single request after which the worker process will be killed. This option should be used when the 'max_execution_time' ini option does not stop script execution for some reason. A value of '0' means 'Off'. Available units: s(econds)(default), m(inutes), h(ours), or d(ays). Default value: 0.
Click to expand...

That is in /usr/local/etc/php-fpm.conf , you can type command shortcut = fpmconf to trigger nano editor opening /usr/local/etc/php-fpm.conf. For command shortcuts see FAQ item 16.

giahancute2013 · Jan 11, 2017

So i cannot fix
Code:
504 Gateway Time-out
nginx
when i curl upload too more images. (30+ images )

(

eva2000 · Jan 11, 2017

giahancute2013 said: ↑
So i cannot fix
Code:
504 Gateway Time-out
nginx
when i curl upload too more images. (30+ images )

(
Click to expand...
You'll need to tweak and tune your PHP-FPM settings with php-fpm main pool config file at /usr/local/etc/php-fpm.conf (overview of config files) and this is left up to end user to do but here's a thread for starters to enable php status page output outlined at

PHP-FPM - CentminMod.com LEMP Nginx web stack for CentOS and

https://community.centminmod.com/threads/pm-max_children.479/ and

https://community.centminmod.com/th..._children-setting-50-consider-raising-it.791/ which outlines the official PHP-FPM config documentation as well.

basically your uploads are large and/or slow so queue and hog up php-fpm childrens available for other php requests

giahancute2013 · Jan 11, 2017

i try to config my php-fpm but i always get that error

This is my php-fpm

Code:

; Log level
; Possible Values: alert, error, warning, notice, debug
; Default Value: notice
log_level = warning
pid = /var/run/php-fpm/php-fpm.pid
error_log = /var/log/php-fpm/www-error.log
emergency_restart_threshold = 10
emergency_restart_interval = 1m
process_control_timeout = 10s
include=/usr/local/nginx/conf/phpfpmd/*.conf

[www]
user = nginx
group = nginx

listen = 127.0.0.1:9000
listen.allowed_clients = 127.0.0.1
listen.backlog = -1

;listen = /tmp/php5-fpm.sock
listen.owner = nginx
listen.group = nginx
listen.mode = 0666

pm = ondemand
pm.max_children = 35
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 1
pm.min_spare_servers = 1
pm.max_spare_servers = 3
pm.max_requests = 4000
;pm.max_children = 4
;pm.max_requests = 500

; PHP 5.3.9 setting
; The number of seconds after which an idle process will be killed.
; Note: Used only when pm is set to 'ondemand'
; Default Value: 10s
pm.process_idle_timeout = 10s;

rlimit_files = 65536
rlimit_core = 0

; The timeout for serving a single request after which the worker process will
; be killed. This option should be used when the 'max_execution_time' ini option
; does not stop script execution for some reason. A value of '0' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
request_terminate_timeout = 5m
request_slowlog_timeout = 5m

slowlog = /var/log/php-fpm/www-slow.log

pm.status_path = /phpstatus
ping.path = /phpping
ping.response = pong

; Limits the extensions of the main script FPM will allow to parse. This can
; prevent configuration mistakes on the web server side. You should only limit
; FPM to .php extensions to prevent malicious users to use other extensions to
; exectute php code.
; Note: set an empty value to allow all extensions.
; Default Value: .php
security.limit_extensions = .php .php3 .php4 .php5

; catch_workers_output = yes
php_admin_value[error_log] = /var/log/php-fpm/www-php.error.log
php_admin_value[disable_functions] = shell_exec

eva2000 · Jan 12, 2017

you stil get max children reached errors ?

5 minutes is too long for some of those time outs basically because that allows slow processing requests like large uploads to hog up the php max children probably

other timeouts are in /usr/local/nginx/conf/php.conf (command shortcut = phpinc) but there's sufficiently set for most applications though you may want to try tuning those too and restart php-fpm and nginx services afterwards
Code (Text):
fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 512k;
fastcgi_buffers 512 16k;
fastcgi_busy_buffers_size 1m;
fastcgi_temp_file_write_size 4m;
fastcgi_max_temp_file_size 4m;
how large are the images ?

what is your ISP connection speed you are uploading via ?

what is your server's network connection speed ? some are capped at 50mbps, 100mbps or 1000mbps

how many images can you upload before you get the 504 error (making sure to restart nginx + php-fpm between number of images upload test) ?

also contents of /var/log/php-fpm/www-slow.log ? wrap in CODE bbcode tags

edit: also may want to update to PHP 5.6.29 latest as 5.6.26 is a bit dated and could of had bug fixes since

https://community.centminmod.com/threads/php-5-6-27-is-available.9163/

https://community.centminmod.com/threads/php-5-6-28-is-available.9451/

https://community.centminmod.com/threads/php-5-6-29-is-available.9714/

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