I installed pihole on the same pi3b twice. both time, it's fine at the install, config what I need and seems to be working. the problem I'm seeing is at some point I can not longer access the webpage (ip address) or the admin (ip address/admin) page. the last time, I completely started from scratch with a new card, imaged things, reinstalled and went back to working normally.
install 1 - seemed to run a few months no issues, upgraded to latest ver no issues. then at some point I could not access the webpage
install 2 - seemed to run for a few weeks no issues. then at some point I could not access the webpage
both seem to work in terms of resolving dns but the webpage does not respond, I only get timeout pages. the only time I know something is problematic is when I attempt to login. I am able to ping the box, responds normally. I can ssh to it but I'm not sure what username is correct (root, pi, something different). I did reboot the box by pulling the power but the result is the same. I have a few pis hooked up to a shared power supply, all connecting to a mini switch that then goes into my main switch. I do not have this problem (or any other problem I can detect/issue with performance) with any other pi in the rack.
my questions are:
• why does the webpage stop responding?
• is there something that would allow me to restart the webpage only?
• what are the correct credentials to use to ssh to the box? I keep ALL my passwords in a password mgr, there would only be limited options and I was able to connect previously so I don't think it's a case of the wrong password. this also means I can not create a debug token