Arch Linux

zeroxoneafour

Member

Registered: 2021-03-20

Posts: 25

[fixed] pacman sync in virt-manager - Could not resolve host

I installed Arch on a virtual disk using virt-manager to try it out (on my real machine, I have Manjaro). The setup worked and it could download and install all of the necessary files. I got grub working and booted into it, and made a user account and everything. But when I tried to run pacman -Syu, it said error: failed retrieving file 'community.db' from <a mirror> : could not resolve host: <mirror>
I know it's not directly a problem with the virtual machine, because when I booted from the installation medium and chrooted into the installation, I ran pacman -Syu and it worked. I have tried deleting and editing /etc/resolv.conf. I have also tried toggling on and off systemd-resolved.service. /etc/resolv.conf seems to not be changing after reboots, but systemd-resolved.service is toggled on after a reboot, regardless of previous state.

Output of ping google.com with systemd-resolved.service enabled:
ping: google.com: Name or service not known

Output of ping.google.com with systemd-resolved.service disabled:
ping: google.com: Temporary failure in name resolution

Contents of /etc/resolv.conf
search domain.name
nameserver 192.168.50.1
nameserver 8.8.8.8
nameserver 1.1.1.1
nameserver 1.0.0.1

Output of ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp8s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
       link/ether 52:54:00:dd:14:99 brd ff:ff:ff:ff:ff:ff

Last edited by zeroxoneafour (2021-03-21 22:23:40)

ponyrider

Member

Registered: 2014-11-18

Posts: 112

Re: [fixed] pacman sync in virt-manager - Could not resolve host

2: enp8s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000

your ethernet is DOWN

zeroxoneafour

Member

Registered: 2021-03-20

Posts: 25

Re: [fixed] pacman sync in virt-manager - Could not resolve host

2: enp8s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000

your ethernet is DOWN

Ran sudo ip link set up enp8s0, same errors under the same conditions

zeroxoneafour

Member

Registered: 2021-03-20

Posts: 25

Re: [fixed] pacman sync in virt-manager - Could not resolve host

Inexplicably, it started working again. What I did was -
Installed all of the resolvconf configuration tools
Installed dhcpcd
Enabled enp8s0 (some credit to ponyrider there)
sudo rm /etc/resolv.conf
Enabled dhcpcd as a system service
And rebooted. Just to test, I tried ping google.com out of hope (before the reboot, it pinged but it hung on response) and it worked!

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,552

Re: [fixed] pacman sync in virt-manager - Could not resolve host

Sanity check:

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

Also please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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