From: Patrick M. <pat...@pa...> - 2004-04-12 18:21:44
|
Hi, My paper about migration a Windows company to Linux is almost done (in dutch). I have read a lot of other papers including IDA guidelines, and going to follow the "gentle" way of migration. This means replacing servers one by one, giving them the same name, ip and so on. This is for the clients so they have no idee of the migration and have no changes on them. The servers are going to change in this way: 1 Database 2 Webserver 3 Domainlogon (here need the windows clients extra software for Ldap) 4 Proxy 5 Groupware 6 Fileserver 7 Printserver 8 DNS - DHCP 9 Firewall 10 Office 11 Desktop If people on this list has remarks or find errors please let me know. TIA Patrick -- "Live long and prosper, Spock." -- T'Pau "I shall do neither. I have killed my captain, and my friend." -- Spock Fingerprint = 2792 057F C445 9486 F932 3AEA D3A3 1B0C 1059 273B ICQ# 316932703 Registered Linux User #44550 http://counter.li.org |
From: Joe K. <kle...@we...> - 2004-04-12 19:19:34
|
On Mon, 2004-04-12 at 14:21, Patrick Marquetecken wrote: > The servers are going to change in this way: > > 1 Database > 2 Webserver > 3 Domainlogon (here need the windows clients extra software for Ldap) > 4 Proxy > 5 Groupware > 6 Fileserver > 7 Printserver > 8 DNS - DHCP > 9 Firewall > 10 Office > 11 Desktop > > If people on this list has remarks or find errors please let me know. Is this the specific order in which the migration is planed? Or is this just a list in no particular order? If it is the former could you give a short comment on how you came to determine this order? It looks like you did a good job of pinning down the pieces. I would likely go with a different order, though, and would be very interested in the reason(s) you ordered things this way. FWLIW, this is how I would order them off the top of my head... 1) Print server 2) File server 3) DNS - DHCP 4) Proxy 5) Firewall 6) Web server 7) Database 8) Domain logon 9) Groupware 10) Office 11) Desktop The idea being that you migrate the things that would have the smallest impact to the daily operations of the office/business (1, 2, 3, 4). Then the things that would entail some impact on productivity but not a tremendous amount (5, 6, 7). Next the things that are one step removed from direct user impact (8 & 9) and lastly the actual users systems (10 & 11). Also, this order lends itself to a better progression of building on the previous one. The actual order would be determined by the specific situation, of course. Different organizations and businesses would have slightly different needs. And don't forget that the systems they are migrating from have an impact on the migration strategy. -- Joe Klemmer <kle...@we...> Unix System/Network Administrator & Ad Hoc Programmer |
From: <pat...@pa...> - 2004-04-16 16:51:00
|
On Mon, 12 Apr 2004 15:19:30 -0400 Joe Klemmer <kle...@we...> wrote: > On Mon, 2004-04-12 at 14:21, Patrick Marquetecken wrote: > > > The servers are going to change in this way: > > > > 1 Database > > 2 Webserver > > 3 Domainlogon (here need the windows clients extra software for > > Ldap) 4 Proxy > > 5 Groupware > > 6 Fileserver > > 7 Printserver > > 8 DNS - DHCP > > 9 Firewall > > 10 Office > > 11 Desktop > > > > If people on this list has remarks or find errors please let me > > know. > > Is this the specific order in which the migration is planed? Or > is > this just a list in no particular order? If it is the former could > you give a short comment on how you came to determine this order? It > looks like you did a good job of pinning down the pieces. I would > likely go with a different order, though, and would be very interested > in the reason(s) you ordered things this way. There is a reason for it. The idea is that the people that has to do the migration have not enough knowledge, and i would migrate first the servers that don't rely on a extern authentication. 1- database has normal it own authentication. And should be quite easy to setup. 2- webserver the same, and it would have no authentication, and a webserver could rely on a dabaseserver. 3-7 The authentication service - LDAP Groupware, file, print, proxy servers will need some kind of authentication for file access ore other. 8- this could perhaps be installed before the logon service, but now the knowledge is larger. 9 this is the last server and as above for the knowledge. 10-11 no change. > > FWLIW, this is how I would order them off the top of my head... > > 1) Print server > 2) File server > 3) DNS - DHCP > 4) Proxy > 5) Firewall > 6) Web server > 7) Database > 8) Domain logon > 9) Groupware > 10) Office > 11) Desktop > > The idea being that you migrate the things that would have the > smallest impact to the daily operations of the office/business (1, 2, > 3, 4). Then the things that would entail some impact on productivity > but not a tremendous amount (5, 6, 7). Next the things that are one > step removed from direct user impact (8 & 9) and lastly the actual > users systems (10& 11). Also, this order lends itself to a better > progression of building on the previous one. > > The actual order would be determined by the specific situation, > of > course. Different organizations and businesses would have slightly > different needs. And don't forget that the systems they are migrating > from have an impact on the migration strategy. > > -- > Joe Klemmer <kle...@we...> > Unix System/Network Administrator & Ad Hoc Programmer -- "Live long and prosper, Spock." -- T'Pau "I shall do neither. I have killed my captain, and my friend." -- Spock Fingerprint = 2792 057F C445 9486 F932 3AEA D3A3 1B0C 1059 273B ICQ# 316932703 Registered Linux User #44550 http://counter.li.org |