SymptomsReseller "Bandwidth Usage" not working - it returns "Proxy Error" .
ResolutionThe problem can appears on the server with large amount of sites, where server is heavily loaded.
To fix the issue you have to increase some parameters in apache config file /usr/lib/ensim/frontend/httpd/conf/eplhttpd.conf.template
Add there env apache module:
LoadModule env_module modules/mod_env.so
and add there following values to proxy:
SetEnv force-proxy-request-1.0 1
SetEnv proxy-nokeepalive 1
Also increase Timeout value at the begining of this file, from 210 to 500 :
Restarting epld is necessary to apply changes.