NODEBB: Nginx error performance & High CPU

[crazycells]

@phenomlab a general but related question. Since opening three ports help, is it possible to increase this number? For example, can we run 5 ports NodeBB at the same time to smooth the web page experience; or is “3” goldilocks number for maximum efficiency?

[phenomlab]

@crazycells It’s not necessarily the “Goldilocks” standard - it really depends on the system resources you have available. You could easily extend it as long as you allow for the additional port(s) in the nginx.conf file also.

Personally, I don’t see the need for more than 3 though.

[DownPW]

@phenomlab

Ok redis is ok now. Thanks for your help

I would like know to obtain the connecting clients Real IP on Nginx log.

I read I have need ngx_http_realip_module for nginx but not active by default but I don’t know if virtualmin have this module enabled.

[DownPW]

@DownPW said in NODEBB: Nginx error performance & High CPU:

@phenomlab

Ok redis is ok now. Thanks for your help

I would like know to obtain the connecting clients Real IP on Nginx log.

I read I have need ngx_http_realip_modulefor nginx but not active by default but I don’t know if virtualmin have this module enabled.

EDIT: OK it will be enabled by default on virtualmin :

nginx -v

[DownPW]

@phenomlab

I have activate ngx_http_realip_module on /etc/nginx/nginx.conf on http block like this :

It seems to be good for you ?

[phenomlab]

@DownPW yes, that looks fine.

[DownPW]

@phenomlab

We have sometimes this error, what do you think about it ?

[phenomlab]

@DownPW I suspect that’s a failure of the socket server to talk to redis, but the NodeBB Devs would need to confirm.

[DownPW]

@phenomlab

Seems to be better with some scaling fix for redis on redis.conf. I haven’t seen the message yet since the changes I made

# I increase it to the value of /proc/sys/net/core/somaxconn
tcp-backlog 4096 


# I'm uncommenting because it can slow down Redis. Uncommented by default !!!!!!!!!!!!!!!!!!! 
#save 900 1
#save 300 10
#save 60 10000

If you have other Redis optimizations. I take all your advice

https://severalnines.com/blog/performance-tuning-redis/