PHP-FPM Reached max_children setting (100)

Oxide · Jan 22, 2017

Hi.

This occurs quite often, it just started happening recently. I've increased it to 500, and it reached even that.

What could this be, an attack? It seems to calm down after a while though.

Here is my php-fpm:

Code:

pm = ondemand
pm.max_children = 500
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 8
pm.min_spare_servers = 4
pm.max_spare_servers = 12
pm.max_requests = 1000

; 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

Suggestions are more than welcome to what I could modify. I have a 6 core/12 threads CPU - 64GB DDR4 Ram.

Code:

processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 3618.562
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 0
cpu cores    : 6
apicid        : 0
initial apicid    : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 1
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 3470.765
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 1
cpu cores    : 6
apicid        : 2
initial apicid    : 2
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 2
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 3474.140
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 2
cpu cores    : 6
apicid        : 4
initial apicid    : 4
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 3
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 2373.046
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 3
cpu cores    : 6
apicid        : 6
initial apicid    : 6
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 4
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 1602.703
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 4
cpu cores    : 6
apicid        : 8
initial apicid    : 8
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 5
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 1879.875
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 5
cpu cores    : 6
apicid        : 10
initial apicid    : 10
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 6
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 2893.218
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 0
cpu cores    : 6
apicid        : 1
initial apicid    : 1
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 7
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 1480.359
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 1
cpu cores    : 6
apicid        : 3
initial apicid    : 3
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 8
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 2928.515
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 2
cpu cores    : 6
apicid        : 5
initial apicid    : 5
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 9
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 3615.046
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 3
cpu cores    : 6
apicid        : 7
initial apicid    : 7
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 10
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 3132.000
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 4
cpu cores    : 6
apicid        : 9
initial apicid    : 9
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

processor    : 11
vendor_id    : GenuineIntel
cpu family    : 6
model        : 79
model name    : Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
stepping    : 1
microcode    : 0xb00001d
cpu MHz        : 2911.218
cache size    : 15360 KB
physical id    : 0
siblings    : 12
core id        : 5
cpu cores    : 6
apicid        : 11
initial apicid    : 11
fpu        : yes
fpu_exception    : yes
cpuid level    : 20
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local
bogomips    : 7200.09
clflush size    : 64
cache_alignment    : 64
address sizes    : 46 bits physical, 48 bits virtual
power management:

pamamolf · Jan 22, 2017

I am sure with that server you can use dynamic instead of ondemand for your php

Oxide · Jan 22, 2017

pamamolf said: ↑

I am sure with that server you can use dynamic instead of ondemand for your php
Click to expand...

How would I do that?
Code:
pm = dynamic
pm.max_children = 500
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 8
pm.min_spare_servers = 4
pm.max_spare_servers = 12
this enough?

pamamolf · Jan 22, 2017

You may try something:

Code:

pm = dynamic
pm.max_children = 150
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 10
pm.min_spare_servers = 5
pm.max_spare_servers = 148

eva2000 · Jan 22, 2017

pm.max_children set too high ! 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

Oxide · Jan 22, 2017

pamamolf said: ↑
You may try something:
Code:
pm = dynamic
pm.max_children = 150
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 10
pm.min_spare_servers = 5
pm.max_spare_servers = 148
Click to expand...
It seems even with this, it's giving 502 Bad Gateaway at times. It happens very randomly, so I don't think it's an attack. Happens for around 5-6 minutes.

Oxide · Jan 23, 2017

Code:

[22-Jan-2017 15:16:51] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 99 total children
[22-Jan-2017 15:16:52] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 2 idle, and 104 total children
[22-Jan-2017 15:17:38] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 116 total children
[22-Jan-2017 15:17:39] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 0 idle, and 121 total children
[22-Jan-2017 15:17:40] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 126 total children
[22-Jan-2017 15:17:41] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 131 total children
[22-Jan-2017 15:17:42] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 136 total children
[22-Jan-2017 15:17:43] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 141 total children
[22-Jan-2017 15:17:44] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 146 total children
[22-Jan-2017 15:17:45] WARNING: [pool www] server reached pm.max_children setting (150), consider raising it

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