Unable update BeagleBone Green

In order to install the ntpdate program, I would like to update the linux version (Debian GNU/Linux 8.8 jessie).
I get the following errors:

root@beaglebone:~# sudo apt-get update
Ign https://deb.nodesource.com jessie InRelease
Err http://repos.rcn-ee.com jessie InRelease
Err http://security.debian.org jessie/updates InRelease
Err http://security.debian.org jessie/updates Release.gpg
Could not resolve ‘security.debian.org
Err http://repos.rcn-ee.com jessie Release.gpg
Could not resolve ‘repos.rcn-ee.com
Ign https://deb.nodesource.com jessie Release.gpg
Err http://httpredir.debian.org jessie InRelease
Err http://httpredir.debian.org jessie-updates InRelease
Err http://httpredir.debian.org jessie Release.gpg
Could not resolve ‘httpredir.debian.org
Err http://httpredir.debian.org jessie-updates Release.gpg
Could not resolve ‘httpredir.debian.org
Ign https://deb.nodesource.com jessie Release
Err https://deb.nodesource.com jessie/main armhf Packages
Err https://deb.nodesource.com jessie/main armhf Packages
Err https://deb.nodesource.com jessie/main armhf Packages
Err https://deb.nodesource.com jessie/main armhf Packages
Err https://deb.nodesource.com jessie/main armhf Packages
Could not resolve host: deb.nodesource.com
Reading package lists… Done
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie/InRelease
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie-updates/InRelease
W: Failed to fetch http://security.debian.org/dists/jessie/updates/InRelease
W: Failed to fetch http://repos.rcn-ee.com/debian/dists/jessie/InRelease
W: Failed to fetch http://repos.rcn-ee.com/debian/dists/jessie/Release.gpg Could not resolve ‘repos.rcn-ee.com
W: Failed to fetch http://security.debian.org/dists/jessie/updates/Release.gpg Could not resolve ‘security.debian.org
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie/Release.gpg Could not resolve ‘httpredir.debian.org
W: Failed to fetch http://httpredir.debian.org/debian/dists/jessie-updates/Release.gpg Could not resolve ‘httpredir.debian.org
W: Failed to fetch https://deb.nodesource.com/node_0.12/dists/jessie/main/binary-armhf/Packages Could not resolve host: deb.nodesource.com
W: Some index files failed to download. They have been ignored, or old ones used instead.

I have insert new nameserver in etc/resolv.conf:

nameserver 212.27.32.176
nameserver 212.27.32.177

nameserver 8.8.8.8

But this don’t work (…and the file resolv.conf don’t store the new configuration; when I restart the beagleBone, the nameservers are not present)

Both of these issues can be caused by not plugging in the Ethernet cable..

By default we have jessie builds configured to use systemd-timesyncd,
this replaces the userspace tool "ntpdate". systemd-timesyncd will
keep the clock up-to date, as long as you have open internet
connection.

Regards,

Both of these issues can be caused by not plugging in the Ethernet cable…

Oh, yes!
Thank you, I solved it! :slight_smile: