Hi, On Mon, Mar 19, 2012 at 09:30:45PM +0100, Florian Haas wrote: > On Mon, Mar 19, 2012 at 9:00 PM, Phil Frost <p...@macprofessionals.com> wrote: > > On Mar 19, 2012, at 15:22 , Florian Haas wrote: > >> On Mon, Mar 19, 2012 at 8:00 PM, Phil Frost <p...@macprofessionals.com> > >> wrote: > >>> I'm attempting to automate my cluster configuration with Puppet. I'm > >>> already using Puppet to manage the configuration of my Xen domains. I'd > >>> like to instruct puppet to apply the configuration (via cibadmin) to a > >>> shadow config, but I can't find any sure way to do this. The issue is > >>> that running "crm_shadow --create ..." starts a subshell, but there's no > >>> easy way I can tell puppet to run a command, then run another command in > >>> the subshell it creates. > >>> > >>> Normally I'd expect some command-line option, but I can't find any. It > >>> does look like it sets the environment variable "CIB_shadow". Is that all > >>> there is to it? Is it safe to rely on that behavior? > >> > >> I've never tried this specific use case, so bear with me while I go > >> out on a limb, but the crm shell is fully scriptable. Thus you > >> *should* be able to generate a full-blown crm script, with "cib foo" > >> commands and whathaveyou, in a temporary file, and then just do "crm < > >> /path/to/temp/file". Does that work for you? > > > > > > I don't think so, because the crm shell, unlike cibadmin, has no idempotent > > method of configuration I've found. With cibadmin, I can generate the > > configuration for the primitive and associated location constraints for > > each Xen domain in one XML file, and feed it cibadmin -M as many times as I > > want without error. I know that by running that command, the resulting > > configuration is what I had in the file, regardless if the configuration > > already existed, did not exist, or existed but some parameters were > > different. > > > > To do this with with crm, I'd have to also write code which > > checks if things are configured as I want them,
Interesting. Why is it that you cannot trust crm? > > then take > > different actions if it doesn't exist, already exists, or > > already exists but has the incorrect value. That's not > > impossible, but it's far harder to develop and quite likely I'll > > make an error in all that logic that will automate the > > destruction of my cluster. > > Huh? What's wrong with "crm configure load replace <somefile>"? Yes, I'd also expect that to always produce the same configuration, i.e. the one as specified in the input file. If it doesn't, then please file a bug report. > Anyhow, I think you haven't really stated what you are trying to > achieve, in detail. So: what is it that you want to do exactly? Anybody's guess, but for whatever reason they don't seem comfortable with the crm shell. Thanks, Dejan > Florian > > -- > Need help with High Availability? > http://www.hastexo.com/now > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
