Comment 14 for bug 1237364

@Paul: the problem you're having is that your nodes can't access the outside world. They are thus unable to fetch the packages needed for commissioning (see http://paste.ubuntu.com/7195406/).

Unless you changed the http_proxy config option (on the settings page — or you can configure it using the CLI/API), your nodes are using the region's proxy to download packages. Have a look at the proxy's log to check if you can see something suspicious.

Another common problem is when MAAS' DNS server (BIND server installed on the region) is unable to resolve names such as 'ubuntu.com'. If this is the problem then the region's /var/log/syslog file will contain errors like 'error (network unreachable) resolving …'. To solve this: if you're using Trusty's package, just configure the 'upstream_dns' option ('settings' page, at the bottom — or using the API/CLI) with your upstream DNS server address. If you're using another version, you have to do the config manually: include something like http://paste.ubuntu.com/7195395/ in /etc/bind/named.conf.options and restart the maas-dns service.