On 27 September 2013 16:17, jcbollinger <john.bollin...@stjude.org> wrote:
> > > On Friday, September 27, 2013 4:47:49 AM UTC-5, Romain PELISSE wrote: >> >> Hi all, >> >> I'm wondering what would be the best approach to extract a value from the >> hostname. In my case, the hostname contains the type of environment (dev, >> int, qa, prod) and I would like to have a variable called $env which >> contains will be extracted from such FQDNs: >> >> - vm-role-app-prod-1 >> - vm-role-app-qa-1 >> ... >> >> I've tried using split, but it was not really practical. Any better idea >> ? Short to deploy a custom fact to add this value to the facts.. >> >> > I don't see why a custom fact would be a good implementation of this. One > of the regex-based facilities supported by Puppet would be better. Or > split() -- what was wrong with that? > > Anyway, here's a way to do exactly what you asked via Puppet's built-in > regsubst() function: > > $env = regsubst($hostname, '^vm-role-app-([^-]+)-.*', '\1') > > or here's an alternative that makes different assumptions about the form > of incoming hostnames: > > $env = regsubst($hostname, '.*-(dev|int|ga|prod)-.*', '\1') > > > I think a custom fact for it is nice because it makes it accessible outside of puppet if you want to. And it would also be stored in puppetdb so you can query for hosts based on that value. -- Erik Dalén -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-users+unsubscr...@googlegroups.com. To post to this group, send email to puppet-users@googlegroups.com. Visit this group at http://groups.google.com/group/puppet-users. For more options, visit https://groups.google.com/groups/opt_out.
