Issue Problems resolving autoinstall.plesk.com + mirror.eu.oneandone.net + more

[Servus]

Hi,
since around last update Plesk Obsidian 18.0.26 I have extreme problems accessing update mirrors over CLI and also update/upgrade site in Plesk Panel. I tried several solutions like desactivating firewall in plesk panel but nothing fixed the problems. Interesting: It's not always the same! Sometimes I can access or hit update domains, and next time I try it, the same domains are unreachable. So, today it was possible to update PHP 7.4.4 to 7.4.5.
I also tried this plesk support tipps. See at the end.
Perhaps someone has an idea solving this problem.

root@server:~# aptitude clean
root@server:~# aptitude update
Hit https://artifacts.elastic.co/packages/6.x/apt stable InRelease
Err http://autoinstall.plesk.com/ubuntu/PMM_0.1.10 bionic InRelease
  Temporary failure resolving 'autoinstall.plesk.com'
Err http://mirror.eu.oneandone.net/ubuntu/ubuntu bionic InRelease
  Temporary failure resolving 'mirror.eu.oneandone.net'
Err http://mirror.truenetwork.ru/mariadb/repo/10.3/ubuntu bionic InRelease
  Temporary failure resolving 'mirror.truenetwork.ru'
Err https://packages.grafana.com/oss/deb stable InRelease
  Temporary failure resolving 'packages.grafana.com'
Err https://updates.atomicorp.com/channels/tortix-common/debian bionic InRelease
  Temporary failure resolving 'updates.atomicorp.com'
Hit http://autoinstall.plesk.com/pool/PSA_18.0.26_2994 bionic InRelease
Hit http://autoinstall.plesk.com/PHP72_17 bionic InRelease
Hit http://autoinstall.plesk.com/PHP73_17 bionic InRelease
Hit http://autoinstall.plesk.com/PHP74_17 bionic InRelease
Err http://mirror.eu.oneandone.net/ubuntu/ubuntu bionic-updates InRelease
  Temporary failure resolving 'mirror.eu.oneandone.net'
Err http://mirror.eu.oneandone.net/ubuntu/ubuntu bionic-backports InRelease
  Temporary failure resolving 'mirror.eu.oneandone.net'
Hit http://mirror.eu.oneandone.net/ubuntu/ubuntu bionic-security InRelease
W: Failed to fetch http://mirror.eu.oneandone.net/ubuntu/ubuntu/dists/bionic/InRelease: Temporary failure resolving 'mirror.eu.oneandone.net'
W: Failed to fetch http://mirror.eu.oneandone.net/ubuntu/ubuntu/dists/bionic-updates/InRelease: Temporary failure resolving 'mirror.eu.oneandone.net'
W: Failed to fetch http://mirror.eu.oneandone.net/ubuntu/ubuntu/dists/bionic-backports/InRelease: Temporary failure resolving 'mirror.eu.oneandone.net'
W: Failed to fetch http://mirror.truenetwork.ru/mariadb/repo/10.3/ubuntu/dists/bionic/InRelease: Temporary failure resolving 'mirror.truenetwork.ru'
W: Failed to fetch https://updates.atomicorp.com/channels/tortix-common/debian/dists/bionic/InRelease: Temporary failure resolving 'updates.atomicorp.com'
W: Failed to fetch https://packages.grafana.com/oss/deb/dists/stable/InRelease: Temporary failure resolving 'packages.grafana.com'
W: Failed to fetch http://autoinstall.plesk.com/ubuntu/PMM_0.1.10/dists/bionic/InRelease: Temporary failure resolving 'autoinstall.plesk.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.

root@server:~#

By accessing server over CLI there already is a warning/notice

  * Canonical Livepatch is available for installation.
   - Reduce system reboots and improve kernel security. Activate at:
     https://ubuntu.com/livepatch

0 packages can be updated.
0 updates are security updates.

Failed to connect to https://changelogs.ubuntu.com/meta-release-lts. Check your Internet connection or proxy settings


Last login: Mon Apr 20 12:54:11 2020 from...

Here the solutions by plesk support.

root@server:~# nslookup autoinstall.plesk.com
Server:         127.0.0.53
Address:        127.0.0.53#53

Non-authoritative answer:
autoinstall.plesk.com   canonical name = 1727842103.rsc.cdn77.org.
Name:   1727842103.rsc.cdn77.org
Address: 195.181.175.51

root@server:~# nslookup mirror.eu.oneandone.net
Server:         127.0.0.53
Address:        127.0.0.53#53

Non-authoritative answer:
Name:   mirror.eu.oneandone.net
Address: 217.72.206.21
Name:   mirror.eu.oneandone.net
Address: 2001:8d8:5c0:404::3

cat /etc/resolv.conf
# This file is managed by man:systemd-resolved(8). Do not edit.
#
# This is a dynamic resolv.conf file for connecting local clients to the
# internal DNS stub resolver of systemd-resolved. This file lists all
# configured search domains.
#
# Run "systemd-resolve --status" to see details about the uplink DNS servers
# currently in use.
#
# Third party programs must not access this file directly, but only through the
# symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a different way,
# replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.

nameserver 127.0.0.53
options edns0
search onlinehome-server.info

The appearance of "search" seems to be a problem. But I don't know how the content was before. The file was updated (timestamp) today at 12.24 pm.
I'm a little afarid to change it to

cat /etc/resolv.conf
; generated by /sbin/dhclient-script
search example.com autoinstall.plesk.com
nameserver 192.168.0.1

. My provider is Ionos (former 1and1). Sometimes they have their own configurations together with PLESK.

 

[Brujo]

sometimes caused by incorrect DNS settings therefore check your dns settings and have you tried to use for testing different / public nameserver not only the one from provider

 

[Servus]

Thanks a lot for your help @Brujo . No. For sure, I would have done it.
But one day later it worked again like all days/the last two years before.
I wanted to wait a few days to be sure that it isn't a temporary fix and it works again before I write it here.
Lots of greets

 

[Brujo]

good that it was obviously only a temporary problem with the nameservers, but that doesn't hurt if you add another nameserver and don't have such a temporary appearance from your provider