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Mon, 24 Mar 2003 15:25:18 -0500
We have a stack of FreeBSD and solaris webservers behind load
balancers. Most of our applications are pretty easy to deploy,
requiring an apache install, some NFS mounts and some supporting
software. I'd like to be able to run any application on any of our
I'm trying to break up the parts of our cfengine configuration from the
system specific to the application specific. I've been using the groups
to define applications, such as "Webserver", adding a host to this
group causes it to copy an additional apache configuration file and
restart the server. It also adds necessary NFS mounts. This would
enable us to increase and decrease the number of hosts serving an
application just by modifying a few group memberships.
(Sorry for the long background).
My issues are:
- Package management: what methods are people using to manage FreeBSD
and/or Solaris packages with cfengine? I'd like to use platform
specific packages were possible instead of something like RPM or OpenPKG
- "Undo": how do you gracefully handle the case were a server has been
removed from a group and should no longer have the
software/mounts/configuration needed for that app.
- Overlap: breaking up each application into a cfengine conf file
leaves it self contained but creates overlaps (if different apps use
the same NFS mount for example). What's the best way to define it once
and list dependencies so that once the dependencies are gone the
software decides it's no longer needed and removes it (thus solving the
Any suggestions would be greatly appreciated.
(If anyone would like to collaborate on using cfengine for application
management and monitoring please let me know. I'm really interested in
bringing forward some concrete solutions other people can implement).
- Application management,
Paul Dlug <=