On Tue, 2007-04-03 at 12:03 -0500, Mike McGrath wrote: > I'm working on getting our first production xen instance up and running > for things like koji, smolt, bodhi and the package database. Here are > some guidelines I'd like to put on the wiki as well as some changes I'd > like to make. > > > 1) xen dom0 - RHEL5 (its just a black box, lets set it up and forget > about it) > 2) after we update our RHEL4 boxes to RHEL5 We will maintain two types > of servers, RHEL5 and FC6 (this is because not all required packages are > in EPEL, and ultimately the FC6 boxes will probably become FC7,8,9 > boxes. I'd like to keep just two types so we can create an appa[1-9] > and an appb[1-9]. I'd like to put appa and appb behind a vip that gets > balanced 1-9 RR. This will allow us to choose where we want to put our > apps, stable environments vs cutting edge. this makes a lot of sense and would help ease admin/maintenance tasks. > 3) test and production xen guests will exist only on test and production > xen hosts. (basically no mixing of production and test). Obviously > emergencies are one thing but in general this is just for organizational > purposes and because we may create a test network later and they won't > be able to mix. production and test *should* never mix :) bad things tend to happen and tracking the cause down gets waaay complicated. > 4) xen instances will be named by hostname. Naming by purpose is > getting confusing. less confusion is good, if this is what does it.. > 5) We will probably start mixing hardware. Unlike before where we had > builder hardware and app hardware, we'll be bluring this line as the > need requires. I plan on building out a few more wiki instances before > the F7 release. > 6) Kickstarts - I'm working on a xen-host and xen-guest kickstart > script. All of our boxes will be based off of one of these two scripts > (they'll be sent to the list soon for examination / suggestions). > Beyond that configuration will happen with puppet. Note: puppet can > pull in config files, install packages and restart services. > 7) Monitoring - I'm working on a monitoring piece (basically a web page) > that will list exactly what xen guests are running on what xen hosts, if > they are pingable, etc. good ideas, on a side note just curious how do updates get pulled/pushed once the servers and apps are in place? -Jason
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