Cannot create VPS in SolusVM 2: cannot calculate size of image: cannot make HEAD request

Symptoms

1. Cannot create VPS in SolusVM 2 - the following error is shown in SolusVM 2 > Tasks > vm-create:

   SVM_ERROR: cannot calculate size of image: cannot make HEAD request

2. On the affected Compute Resource, the following can be found in /var/log/solus/agent.log

   CONFIG_TEXT: [ERR] HEAD <link> request failed: Head <link>: dial tcp: lookup example.com on [::1]:53: read udp [::1]:49012->[::1]:53: read: connection refused

Cause

Invalid nameservers in /etc/resolv.conf on Compute Resource.

Resolution

1. Access Compute Resource over SSH.
2. Set standard Google nameservers in /etc/resolv.conf:

# echo "nameserver 8.8.8.8" > /etc/resolv.conf