503 error when Litespeed Cache is activated

Hi,

which page you get the 503 error ?

Best regards,

Hi there, it’s not on any specific page, also on the front page.

Regards
Carsten

Hi,

Could you please check /usr/local/lsws/logs/stderr.log , see if there is anhing inside of it ?

Best regards,

Hi there, where do I find this log?

Regards

Hi,

/usr/local/lsws/logs/stderr.log

Best regards,

I don’t know the right command to show this log

Hi,

no , it’s text file , you can not execute it , you need to view it

Best regards,

I this what you are looking for?

2020-11-29 12:40:00.399 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
[106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
[106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
[106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:00.448 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:00.548 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:00.648 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:00.748 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:00.848 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:00.949 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.149 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.249 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.349 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.449 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.550 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.652 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.752 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.852 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:01.952 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:02.052 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
2020-11-29 12:40:02.153 [STDERR] [106177] Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.
@@@
“/usr/local/lsws/logs/stderr.log” [readonly] 41168L, 6156757C 1,1 Top

Hi,

yeah

Reached max children process limit: 10, extra: 0, current: 10, busy: 10, please increase LSAPI_CHILDREN.

this seems interesting

the max PHP processes allowed is 10 , when it requires more PHP to start up , it will either be hold-in-line , or returns as 503 error

raise the limit from 10 to 15 or 20

run

grep -riF "LSAPI_CHILDREN" /usr/local/lsws/conf

it should returns you 2 or 3 files , edit them , you will see 2 lines as

  maxConns                10
  env                     PHP_LSAPI_CHILDREN=10

change them to 10 or 15 , then restart OLS by systemctl restart lsws

Best regards,

This is what it returns:

 sudo grep -riF "LSAPI_CHILDREN" /usr/local/lsws/conf
/usr/local/lsws/conf/httpd_config.conf0:    env                             PHP_LSAPI_CHILDREN=10
/usr/local/lsws/conf/httpd_config.conf:    env                             PHP_LSAPI_CHILDREN=10
/usr/local/lsws/conf/httpd_config.conf0,v:    env                             PHP_LSAPI_CHILDREN=10
/usr/local/lsws/conf/httpd_config.conf.dpkg:    env                             PHP_LSAPI_CHILDREN=10

edit this file

/usr/local/lsws/conf/httpd_config.conf

find these 2 lines

  maxConns                10
  env                     PHP_LSAPI_CHILDREN=10

change it from 10 to higher number , don’t go too high , gradually raise , as 15 or 20 and monitoring your RAM

too many PHP process could easily overwhelm RAM.

Linux is new to me, could you guide me how to edit these files?

First I’m not sure if I should use sudo to open /usr/local/lsws/conf/httpd_config.conf?

https://www.howtoforge.com/faq/how-to-edit-files-on-the-command-line

there are plenty guides on Internet

Thanks, I will look into this tutorial

Regards