Internet Disconnecting After a Few Hours

[deHakkelaar]

@jrathjens

To check the /boot partition, I need to remove SD card and plug it into my desktop?

That was the initial idea yeah ... if you were to check the other EXT4 partition on another PC at same time anyway.
Dont need to to do that now.
The /boot partition/mount is only invoked at boot time so after the system comes up, that /boot partition is not involved anymore.
If you want to check anyway (without the desktop PC), make sure no processes have files open on that /boot mount:

pi@ph5:~ $ sudo lsof /boot/
pi@ph5:~ $

Unmount the filesystem:

pi@ph5:~ $ sudo umount /boot
pi@ph5:~ $

And run fsck (with auto repair argument) on the partition:

pi@ph5:~ $ sudo fsck -y /dev/mmcblk0p1
fsck from util-linux 2.33.1
fsck.fat 4.1 (2017-01-24)
/dev/mmcblk0p1: 241 files, 109198/516190 clusters

And mount it again:

pi@ph5:~ $ sudo mount -a
pi@ph5:~ $

---

pi@ph5:~ $ findmnt /boot
TARGET SOURCE         FSTYPE OPTIONS
/boot  /dev/mmcblk0p1 vfat   rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro

@jrathjens

However, I continue to get the timeout.

When the timeouts occure, are you still able to ping and SSH into the Pi ?
If so, it could be the configured upstream DNS servers causing troubles somehow.
Try do below two when have problems again and post results here:

nslookup pi-hole.net 1.1.1.1

nslookup pi-hole.net 1.0.0.1

And when have another PC running Windows, Linux or MacOS, run above same two commands on them in a command prompt too.

[jrathjens]

@deHakkelaar after pointing the router back to the pihole this afternoon (~2:00 pm), internet cut out at around 5.

Results from your queries are below:
From the pi-hole

The Windows machine was also unable to connect to anything.

[deHakkelaar]

You seem to have intermittent problems with your Internet connection.
This is not really Pi-hole related.
Run below one on Pi-hole when everything is working and when not working (timeouts) to compare:

traceroute -n 1.1.1.1

Same for the Windows machine:

tracert -d 1.1.1.1

And depending results, report an issue at your ISP.

[jrathjens]

Thanks everyone! I appreciate all the effort you've all put into this!

[deHakkelaar]

Solved ?
Wat was solution ?

[jrathjens]

Not solved, but it seems we're at an impasse if it's not pi-hole related! I can't get my ISP to come out and do anything about it as long as covid is as bad as it is in my area.

[deHakkelaar]

Did the problem arise again and did you do the tracert on the Windows box ?
If that tracert cuts short at some IP, thats where the problem lies.
And as this is all IP/ICMP based (no DNS), Pi-hole isn't involved.