Cloudron Forum

never mind, I fixed the issue with the IP. I went into GoDaddy and noticed the IP was different, so I changed it back, restarted unbound service and now my dashboard is loading with my domain. Now to restoring all of the apps with my backups.

Hi @girish,

I did that step and did a server reboot as the systemctl restart unbound did not work and when it came back up, all was good again! Thank you!

Ah, thanks! I was already running 8.0.5, but the upgrade to 8.0.6 got stuck. /home/yellowtent/box/setup/start.sh came up with an unbound error. I was able to start box manually and start all apps, but the backup volume did not mount. After installing unbound-anchor, I was able to run /home/yellowtent/box/setup/start.sh without errors, and now the backup is working again.

This was because the upgade to mysql didn't complete. apt --fix-broken install completes the upgrade. I guess ubuntu upgrade was somewhat midway? I think https://docs.cloudron.io/guides/upgrade-ubuntu-20/#post-upgrade (though the server was already in Ubuntu 22). After that the update worked.

@girish Thank you!

I restarted ubound and it's all good now. Thank you!

@girish Thanks you for your quick answer. Works great now.

@fisi I think @nebulon responded to your ticket from support. If this is the same support ticket, the reason is that your server has 2 NICs and connected to the internal and external network. This is not a problem but the routes are set up incorrectly in ubuntu. The default route is going via the internal gateway. I think you have to adjust the netplan to fix the routing situation .

(I hope I am replying about the correct tickte 🙂 ! )

Looks like the DNS resolution is failing. Can you explain your environment and check if you can resolve any host from the system via SSH? Is the unbound service working?

Not sure if relevant to your situation, but to bypass specific DNS entries you can also do:

local-zone: example.com typetransparent local-data: "my.example.com A 172.18.0.1"

Right, you need to figure why unbound is not starting. The logs are in journalctl -u unbound -fa . Note that if unbound doesn't work, DNS doesnt work properly on the server and makes this quite unstable (as you experienced already).

@nichu42 said in DNS resolving problem:

I've tried to modify the forward-all.conf like this

forward-tls-upstream: yes forward-addr: 91.239.100.100@853#anycast.uncensoreddns.org forward-addr: 1.1.1.1@853#cloudflare-dns.com

but it didn't work (SERVFAIL).

Answer to myself (in case someone else ever needs this):

It is necessary to also add the following to the conf file:

server: tls-cert-bundle: /etc/ssl/certs/ca-certificates.crt

so the validity of the certificates can be verified.
After that, you can add TLS upstream servers as mentioned in my previous post. I've decided for anycast.uncensoreddns.org and dns.quad9.net now.

@nebulon said in Cloudron dashboard not loading after reboot after NextCloud "not responding":

Most likely you are hitting an unbound issue then. Checkout the unbound section at https://docs.cloudron.io/troubleshooting/

Unbound solved my issues, thank you! 🙂

OK, I have fixed the unbound issue with IPv6. It's an upstream bug but I have made a workaround for the moment. Fix will be part of 7.3.5 (released next week).

@bcdodgeme this usually only happens when the server runs out of disk space.

@girish Yes, looks like it

@girish Thank you - now its working again.

@ajtatum Congrats on the success and all the learning! 😎

@nebulon really love you guys for never failing to provide a helpful response, you even have this "rare case" covered in the docs

@Mastadamus From the earlier screenshot you posted, the issue seems to be "Could not establish chain of trust". So, I would investigate that angle (which is DNSSEC related)

@girish I think it was ultimately a disk space issue - I restarted unbound and that seemed to do the trick. I have to move servers again because of a Vultr restriction (block storage not in the zone I had the VM in) that's unrelated to Cloudron so I'll see what happens. Thanks guys!