Pihole+Unbound prevents one single device from accessing the internet

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The last thing I'm struggling with was getting logging set up when following the official guide.

Part of the guide here:

"On modern Debian/Ubuntu-based Linux systems, you'll also have to add an AppArmor exception for this new file so unbound can write into it.

Create (or edit if existing) the file /etc/apparmor.d/local/usr.sbin.unbound and append

/var/log/unbound/unbound.log rw,

to the end (make sure this value is the same as above). Then reload AppArmor using

sudo apparmor_parser -r /etc/apparmor.d/usr.sbin.unbound
sudo service unbound restart"

The issue here is AppArmor. I keep getting:

Warning: unable to find a suitable fs in /proc/mounts, is it mounted? Use --subdomainfs to override.

When I run sudo apparmor_parser -r /etc/apparmor.d/usr.sbin.unbound

I've created the directories, the files, got the permissions set, I've installed apparmor and apparmor-utils. I tried googling this issue but keep getting 'compile a new kernel" results and that doesn't seem right when the official guide says this should just work out of the box with a default install of Unbound.

Any thoughts on this one? After this, I'll leave you alone :slight_smile: Thank you very much for all of your help so far.

22

What do you need the logs for?

Client query logging can be looked up in the Pi-hole logs and long term database.
If its for diagnosing, you only have to up verbosity to the level that you desire and loopup the logs with journalctl:

23

Well, considering the earlier issues I was having with Unbound, I thought that having the logging would have helped sooner.

But yes, you're right. It's not super needed.

Thank you again!

1 Like
24

Check the man page for syntax like for example show only entries for -s today:

man journalctl

Or grep -g if your distro supports it.

25

Thank you. Will do.

I actually just thought of one more question that maybe you can help me answer.

With the DNS resolver being Unbound that’s listening on port 5335, so I still need firewall rules allowing LAN traffic to port 53?

26

Yes 53 UDP & TCP only for DNS.
Dont need a rule for 5335 bc this traffic is all happening on the isolated loopback interface named lo that cant be accessed from your LAN:

pi@ph5b:~ $ ip -br link show lo
lo               UNKNOWN        00:00:00:00:00:00 <LOOPBACK,UP,LOWER_UP>

pi@ph5b:~ $ ip -br address show lo
lo               UNKNOWN        127.0.0.1/8 ::1/128

Ports are described in the docs as well:

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