Hi all,
As we've been moving forward with our Nova implementation and developing
an appropriate procedure for getting approval to make changes to our
Cfengine policy, I've realized that it would be incredibly important to
know which systems will be affected by a policy change. So, given a
class expression ("oracle.!gold", "web_server|ftp_server", etc.), I'd
like a way of using Cfengine to generate a list of hosts that match the
expression.
My initial thought is derived from how a Nova policy server gathers
statistics files from its clients. I could have the policy server fetch
/var/cfengine/state/allclasses.txt from every host and then run a script
on the policy server could use those files as the data from which it
could generate such a list. For example, here's the most complicated
class expression in our policy:
pserver$ list-hosts
"!unix_lab.!nonstandard_sudoers_host.(linux|(solaris.zone_global.!usr_lo
cal_is_nfs))"
matchinghost1
matchinghost2
etc.
pserver$
Anyone have any other ideas? Anyone know if such a capability will be
added to Nova 2.0?
Thanks,
Justin
Justin C. Lloyd
Senior Unix Infrastructure Engineer
Office: 303.684.4166
www.digitalglobe.com <http://www.digitalglobe.com/>
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