I have installed Zpanel (PHP/MySql/Apache) + Wordpress and config php.ini. The problem is in Resource Limits of php.ini. when these parameters are configured:
max_execution_time = 64
memory_limit = 128M
Google bot can't login to my website and Webmaster tools show followed error:
Network unreachable: Network unreachableHTTP Error: 500
We encountered an error while trying to access your Sitemap. Please ensure your Sitemap follows our guidelines and can be accessed at the location you provided and then resubmit.
When I changed the configuration like:
max_execution_time = 2000
memory_limit = 512M
The problem will solve, but it use a lot of CPU and my VPS issues the warning about too much using of CPU resource.
Please help me how can I configure to have the best results.