The website hosted on a Linux NG Apache web server shows the following error:
Resource Limit Is Reached The website is temporarily unable to service your request as it exceeded resource limit. Please try again later.
The webspace has the following limit in effect:
[root@ngweb1 ~]# redis-cli -s /var/lib/redis/redis.sock get 'website-by-name:example.com' | redis-decode-obj --type=vh_info_t | grep nproc_lim <i.m_lve_nproc_lim>20</i.m_lve_nproc_lim>
The webspace hits the 'LVE entry process limit'. The situation may occur in case the limit of the subscription is set to a small value or to an unlimited value, which puts the default limit of 20 processes by default.
More information on the error can be found in official Cloudlinux documentation:
Entry Processes Limit
Increase the following subscription limit:
LVE number of entry processes 20
In case it is set to unlimited value, set it to a specific limit, large enough to serve the requests without issues.