Beta Branch update inc/nginx_configure.inc fix cloudflare zlib usage

update inc/nginx_configure.inc fix cloudflare zlib usage

nginx compiled with cloudflare zlib may result in unexpected nginx master process (not to be confused with nginx worker process) being locked at 100% cpu load during centmin.sh menu option 4 recompile/upgrades and when you access server IP address during the nginx recompile/upgrade. This update seems to fix the problem.

Upgrading Centmin Mod Code to Latest Version

Getting Started Guide step 19 outlines also how to keep Centmin Mod code updated or how to switch version branches or you can run cmupdate command that was recently added.

Centmin Mod LEMP stack's script code is constantly updated for improvements, bug fixes and security fixes so keeping the Centmin Mod code up to date is important.

---

For 123.09beta01 and higher that means running SSH command = cmupdate and then re-enter /usr/local/src/centminmod and re-run centmin.sh menu.

example SSH command = cmupdate run

Code (Text):

cmupdate
Saved working directory and index state WIP on 123.09beta01: 85fae5e update nginx.conf in 123.09beta01
HEAD is now at 85fae5e update nginx.conf in 123.09beta01
Updating 85fae5e..4d3149e
Fast-forward
 addons/ffmpeg.sh        |  2 +-
 centmin.sh              |  2 +-
 config/nginx/nginx.conf |  1 +
 inc/downloads.inc       |  2 +-
 inc/nginx_configure.inc |  2 +-
 inc/nginx_patch.inc     |  2 +-
 inc/openssl_install.inc | 20 +++++++++++---------
 7 files changed, 17 insertions(+), 14 deletions(-)

For full details read the following links:

• New centmin.sh menu option 23 updating
• Centmin Mod Upgrades
• Cronjob Auto Updating Centmin Mod Code Guide
• How to upgrade Centmin Mod + backing up customisations

Upgrading Centmin Mod involves 2 parts.

1. Upgrading the actual Centmin Mod code outlined at Upgrade Centmin Mod. This is heart of Centmin Mod where the code is the engine that runs centmin.sh shell based menu and all the automation you're accustomed to. You can easily update within a Centmin Mod version branch or switch version branches via centmin.sh menu option 23 outlined here.
2. Upgrade software that Centmin Mod installed or manages. For this part following outline at How to upgrade Centmin Mod software installed on your server.

Continue reading...

123.09beta01 branch

• Branch: centminmod/centminmod
• Commit History: centminmod/centminmod

 

That seems to be issue this commit fixes for @Matt. Though I haven't been able to reproduce it 100%, in my case normal nginx vhost domains work fine during nginx recompile (centmin.sh menu option 4). But only direct access to server IP address will lock nginx master process at 100% cpu usage and then normal nginx vhosts won't work until nginx recompile finishes. If I do not access direct server IP address during nginx recompile, nginx master process for me doesn't lock at 100% cpu usage. But does for @Matt and you it seems

But this committed fix update, fixes both @Matt and my issues during nginx recompiler routine.

 

hmm guess needs more investigating

 

@rdan if that doesn't work try nginx zero downtime on the fly binary upgrades via persistent config variable NGINX_ZERODT='y'. If after Clouldflare zlib commit fix and still have a moment during actual nginx restart where sites aren't available, it could be related to number of nginx workers you have.

NGINX_ZERODT='y' Beta Branch - Nginx Upgrade - zero downtime mode

 

sweet.. you mean the updated commit fix or you mean using NGINX_ZERODT='y' ?

auto will use cpu max threads. But have you tried NGINX_ZERODT='y' yet ?

 

You mean seconds (s) not milliseconds (ms) ? hmmm something ain't right if that is in seconds and Cloudflare zlib based nginx recompile takes that long. But I also recall you're disabling alot of nginx modules via persistent config file right ? could be related - so you can try nginx recompile with an empty persistent config file /etc/centminmod/custom_config.inc too.

Might need one of your nginx upgrade logs for for further troubleshooting

To troubleshoot, you need to check the full nginx upgrade log at /root/centminlogs and instructions under Sharing logs and errors heading for using Pastebin.com or Gists to share a sanitised version of the contents of the nginx_upgrade.log log. You can see full details at How to troubleshoot Centmin Mod initial install issues

also what's output of

Code (Text):

nginx -t

when you run centmin.sh menu option 4 there's a nginx upgrade log timestamped at /root/centminlogs

if you type this command it lists all logs in date ascending order so latest log at bottom

Code (Text):

ls -lArt /root/centminlogs

so copy the entire contents of latest nginx_upgrade log to gist.github.com or pastebin.com

you can use grep to filter the logs, i.e. look for nginx_upgrade in log name

Code (Text):

ls -lahrt /root/centminlogs/ | grep nginx_upgrade
-rw-r--r--  1 root root 3.2M Oct 11 15:55 centminmod_1.2.3-eva2000.09.001_111016-155345_nginx_upgrade.log
-rw-r--r--  1 root root 672K Oct 11 22:06 centminmod_1.2.3-eva2000.09.001_111016-220515_nginx_upgrade.log

So the last nginx upgrade log was named centminmod_1.2.3-eva2000.09.001_111016-220515_nginx_upgrade.log and located at /root/centminlogs/centminmod_1.2.3-eva2000.09.001_111016-220515_nginx_upgrade.log

then use cat command to output the contents of that log

clear your ssh window buffer/screen and type

Code (Text):

cat /root/centminlogs/centminmod_1.2.3-eva2000.09.001_111016-220515_nginx_upgrade.log

then select and copy and paste output to pastebin.com or gist.github.com file to share. If your SSH client's scroll buffer isn't large enough using cat might not output the entire log file contents, so you may need to download the log and use local text editor to open and copy and paste.

so only need content of one specific log, in this case most recent nginx_upgrade.log log

yeah be sure to get nginx_upgrade.logs for CF zlib enabled and disabled so can compare.

 

Interesting so something in your persistent config file is causing issues. So nginx compile time not slower either ?

seems one of my auto tuned optimisation routine needs an update

 

centmin mod nginx default is 5s too - no auto tune there

what was persistent config contents before ?