Hi John, You can use other nodes' exported resources, if there are any, but you > cannot use other nodes' facts. Multiple nodes can use the same data, > however, by obtaining them from the same source, be it global > variables, class variables, or external data (e.g. extdata or hiera). >
Understood. > I don't quite follow that. "References"? Do you mean that class > some::app::db relies on a template that interpolates the value of the > db_host parameter? > Yes. > On the contrary, in your example you will have that problem all the > time. It doesn't matter what classes have been applied to other > nodes. Only classes applied to the same node are accessible to each > other. For your example to work, therefore, classes 'my_mysql_server' > and 'some::app::db' would need to be applied to the same node, and > each would see the other in the form they were applied to that node. > In that case you don't need to rely on information about other nodes, > so the question is moot. > OK, I understand now. Thank you. > Hard coding it is the quick and dirty way. It's not necessarily > wrong, but it will make your manifests more difficult to maintain as > they grow in number and complexity. > > You can instead use an external node classifier to declare your > classes and their parameters. That does require you to write or > obtain an ENC, set it up for your configuration, etc. Foreman is one > possibility there, and the Puppet Dashboard provides another. > > If you're not already using an ENC, however, then I would recommend > putting the DB server name into an external data store and reading it > into your manifest via a Puppet function. The built-in extlookup() > function provides an approach of this sort. Hiera provides a more > flexible approach of the same kind, and it will be a built-in starting > with the next major version of Puppet (Telly). > Thank you for the options - it's appreciated. Joe -- Joe Topjian Systems Administrator Cybera Inc. www.cybera.ca Cybera is a not-for-profit organization that works to spur and support innovation, for the economic benefit of Alberta, through the use of cyberinfrastructure. -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To post to this group, send email to puppet-users@googlegroups.com. To unsubscribe from this group, send email to puppet-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/puppet-users?hl=en.
