On 08.03.2013, at 12:15, andi_a...@dell.com wrote: >> >> >> From: Haselwanter Edmund [mailto:edm...@haselwanter.com] >> Sent: Friday, March 08, 2013 4:51 AM >> To: Abes, Andi >> Cc: crowbar >> Subject: Re: [Crowbar] Attribute injection >> >> >> On 07.03.2013, at 02:36, andi_a...@dell.com wrote: >> In general, each recipe will define a set of attributes that are required >> for it to run successfully. These attributes provide the information that >> either search or crowbar would have provided. The attributes can be >> populated in different ways, depending on the environment in which the >> recipes are used: >> a) With pure Chef - via the default attributes in the cookbook, the >> environments facility of Chef, or roles >> b) In Crowbar - crowbar will compute and inject override values for >> these attributes, at runtime, via chef API's. >> c) In other deployment systems - in a manner either like a) or b) or >> telepathically. >> >> d) a wrapper cookbook setting node attributes >> >> e.g. >> >> node.set['donar']['keystone_server_name'] = get_access_endpoint("keystone", >> "keystone", "admin-api")["host"] >> >> get_access_endpoint could be a API call to crowbar > > Hmmm.... interesting, kind of an "application" cookbook - generalizing the > opscode community application approach to openstack. > Edmund, is this how you're deploying?
Yes. application cookbook approach. works nice so far. >> or a more "interesting" wrapper cookbook change with >> chef-rewind(https://github.com/bryanwb/chef-rewind): >> >> chef_gem "chef-rewind" > > Just the other day Judd was talking to me about this, and I forked the repo ;) > Monkey patching cookbooks sounded a bit weird at first for me, but I can see > how it can be very useful. yes. at first sight it seems like monkeypatching, but is more like refining/overriding a setting. >> require 'chef/rewind' >> >> include_recipe "nova::compute" >> >> if node["nova"]["libvirt"]["virt_type"] == "qemu" >> rewind "package[nova-compute-qemu]" do >> action :nothing >> end >> elsif node["nova"]["libvirt"]["virt_type"] == "kvm" >> rewind "package[nova-compute-kvm]" do >> action :nothing >> end >> end >> > > I think that w/ the AttrInj cookbooks we could avoid needing to do this... > and just have the cookbook have a virt_type attribute that allows the > previous methods to set the desired value. > > >> cu Edmund >> -- >> DI Edmund Haselwanter, edm...@haselwanter.com, http://edmund.haselwanter.com/ >> http://www.iteh.at | http://facebook.com/iTeh.solutions | >> http://at.linkedin.com/in/haselwanteredmund >> >> >> > > _______________________________________________ > Crowbar mailing list > Crowbar@dell.com > https://lists.us.dell.com/mailman/listinfo/crowbar > For more information: http://crowbar.github.com/ -- DI Edmund Siegfried Haselwanter, Leitnergasse 16, 8010 Graz Tel. : +43 - 676 - 3282554, e-mail: mailto:off...@iteh.at, UID: ATU64821134 web: http://www.iteh.at | http://facebook.com/iTeh.solutions | http://at.linkedin.com/in/haselwanteredmund _______________________________________________ Crowbar mailing list Crowbar@dell.com https://lists.us.dell.com/mailman/listinfo/crowbar For more information: http://crowbar.github.com/
