On 9/20/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > I would like to migrate to Debian-AMD64 system, how can I do it, without > interrupting for more > than 5 minutes my services which are running on it?
Last Saturday, I implemented a process converting data from one of our systems to a new protocol version. My part of that effort was on the database side, and involved about a 1 hour outage, which was added to several hours of sysadmin effort... For that change to involve 1 hour of database outage required that some of us clever folks start planning how to do this about a year ago. You're without hope in this, at least based on the methodology you seem to think you're using. Point #1. You need another server to do this. If you can't get one, you can't have a five minute outage. Point #2. You need to have a REALLY CLEAR inventory of what services you need to migrate. It is entirely likely that there will be some that can be migrated painlessly, possibly even without any evident outage. You need to have a plan for each and every service that is to be migrated. Otherwise the migration will fail. We have one server at work running an ancient (and now totally unmaintainable!) Debian release; a project to shift services off of it in 2003 has still not completed. We got databases off of it, but there is still an Apache instance running a bunch of little CGI apps that haven't been successfully run anywhere else :-(. Planning and intent took place, but it turned out to be just too painful to migrate everything off the box. -- http://www3.sympatico.ca/cbbrowne/linux.html "The true measure of a man is how he treats someone who can do him absolutely no good." -- Samuel Johnson, lexicographer (1709-1784)