[SOLVED] Server cannot reach Internet

[DrBear]

Hello everyone!

 

Until a few days ago, I had a perfectly working Unraid server with Nextcloud, PiHole Paperless and such runnig.

Out of the blue my server cannot reach the outside internet anymore, i.e. I can open the GUI from my network, PiHole and Nextcloud are operational, but I cannot update my dockers, my homeserver cannot connect to the Unraid server. All operations needing to download something are not connecting.

 

I searched the forum and the internet, but could not find a solution. Any ideas?

 

Thanks a bunch for your help!

 

Thorsten

mastermind-diagnostics-20240807-2130.zip

Edited August 8 by DrBear

[bmartino1]

can you open unraid web terminal and ping 3 places

ip a
to get current unraid ip info

ping your unraid IP machine
ping your router
ping the public dnd 8.8.8.8

ping google.com

Network setups and to look at:

ping your unraid IP machine
if yes move on if no check your Ethernet cable your have unraid set to a static ip 

ping your router
yes move on,if no... its a dhcp issues from your router and your subnet / cable may be bad.

ping a public dns ip Google is 8.8.8.8
can you ping 8.8.8.8? yes good move on you are making it off internet, if no unraid network settings / router may have an ISP problem and are not talking to the WWW/internet

ping google.com and known web host
if yes no networking issues its something else.. if no, you have internet access but somehow you have lost the ability to resolve dns name.
*this can be caused by improper dhcp setting and/or pihole or other vpn like settings.

Otherwise stop all dockers, turn off autostart, stop all vms, go to settings disable dockers and VM, and lets review your dns / unraid network settings...
 

[DrBear]

Hi there!

 

Thank you so much for your help! It might be clear and easy for some, but it pointed me in the right direction.

 

I had to fix a DNS configuration problem with my router, a Fritz Box. Now everything is working fine again!

 

Again: Thanks a lot!

Thorsten