Magento 2.1 installation issues

I’ve been recently trying to install the latest Magento and was experiencing some issues with Magento installer unable to detect PHP version. My message was pretty weird:

Your PHP version is . The required PHP version is

also found couple 500 errors in XHR requests.

powerDNS with SQLite backend as a slave for BIND

(powerDNS)[https://www.powerdns.com] it’s a great alternative for large and complex BIND setup. Light footprint, and quick setup made that server as my obvious choice for slave server for primary BIND server. So let’s config begins: