Darren, thx for your comments, some answers inline:
On 02/23/09 18:30, Darren Reed wrote: > On 23/02/09 02:39 PM, Michael Schuster wrote: >> All, >> >> I'm now working on getting the recently discussed server IDs in place; >> here's a question: >> >> What do we do with a server's ID when it is removed from a >> servergroup? Do we want to "remember" its ID for re-use, in case the >> same server (identified by IP address) ever comes back, and also to >> make sure no other server gets assigned the same ID, and causes >> confusion? > > So rather than worry about what to do when it is removed, > concentrate on asking and answering the question about > what is it intended to mean. And how you want the > number space to behave. Also, do you mean the base > name of the serverID or the individual numbers or > the combination of the string and number? the latter, ie the individual server's unique ID (as you correctly infer). > According to your email, the serverID is just the string > given to the server group, but in that case it makes no > sense to allow for "remembering" if an IP# goes away, > so I'm concluding that you mean the individual serverID > and not the base name. > > For example: > - for what purpose is the serverID being published? to give the user a unique handle that easier to memorise and manipulate than IP addresses (esp. IPv6). > - how do you intend for it to be used and for how long? for as long as the load balancer is up and the server in question is in use. > - how will a reboot impact serverIDs? it shouldn't at all if the configuration doesn't change. > - do you want the numbers to simply increase? yes. > - what is the range of numbers intended to be? We haven't fleshed that out, but I guess 10^5 is a sufficient range (input welcome!) > - is the system admin allowed to control the id#? ATM there's no provision for that. > - if the id is assigned automagically but I have to replace a box with > id#X, why can't I reassign id#X? do you mean a) use the same id#X for a different box that replaced the old one? does it use the same IP? if so, just disable the back end server, replace it, re-enable it. b) assign a new id# to the same server or the id# of the replaced server to one with a different IP address? Michael -- Michael Schuster http://blogs.sun.com/recursion Recursion, n.: see 'Recursion'
