it has to be checked. pure and simple.
if you trust nagios, then teh check can be "no ntp alerts received".

On Nov 2, 2006, at 9:11 PM, Brandon S. Allbery KF8NH wrote:


On Nov 2, 2006, at 20:54 , Timothy S. Nelson wrote:

I think NLD is saying that the machine can automatically sign off when
it knows the upgrade is good to go.

Well, it knows when the machine has integrated the change. It does *not* necessarily know if everything is functioning correctly afterward. So, do you need to tie Nagios into this as well? What kinds of failures then trigger no-go on a given change?)

It also doesn't deal with the problem of an unforeseen / emergency change needing to be inserted into the sequence (see Paul's discussion about branching etc.). Narayan's proposal assumes that the changes are already committed and are sequenced out to clients in order as they become ready; this makes inserting other necessary changes problematic, especially if they require alteration of later steps. My proposal keeps the sequencing separate from the effectively-inalterable committed changes, and while it doesn't necessarily catch collisions (certainly it could catch failed "patch" runs, but semantic conflicts are harder and in some cases may well require actual deployment to test machines) it would make it easier to handle them.

--
brandon s. allbery [linux,solaris,freebsd,perl] [EMAIL PROTECTED] system administrator [openafs,heimdal,too many hats] [EMAIL PROTECTED] electrical and computer engineering, carnegie mellon university KF8NH



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Andrew Hume  (best -> Telework) +1 732-886-1886
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