CentOS Live Server Migration?


 
Thread Tools Search this Thread
Operating Systems Linux CentOS Live Server Migration?
# 1  
Old 12-02-2009
CentOS Live Server Migration?

Hello, everyone. I've been lurking on this forum for a while but have never needed to post asking for a bit of help until now.

Long story short, I have a test of sorts scheduled with a prospective employer, a managed web hosting company, that involves migrating a hypothetical customer from their old server to their new server, hosted with the prospective employer. I have worked with Linux for a few years now, including at two unmanaged hosting companies for about three years, so I can handle the basics and a bit of intermediate stuff without any issue.

Unfortunately, due to my past jobs offering unmanaged hosting, we would never in a million years do something like this for a customer, so I am not familiar with how to do this. I know how to move data, users, and so forth over, basically via what is mentioned here, which we also would never do, due to learning on my own time. However, the stipulation that services on the origin server not be shut down during the migration process, which entails moving services over as well, has me scratching my head, hence my request for help or a few pointers regarding live services migration.

What I know about the impending test is that it "is a standard configuration not designed to be tricky." This is for web hosting, so I assume it will have Apache, MySQL, PHP, a mail server, and other basic web hosting services running. As far as the distro, it is either going to be CentOS, which I am most familiar with, or Gentoo. The person I was e-mailing could not remember which distro it was.

Any and all assistance regarding live server migration will be greatly appreciated, because how I perform on this test will likely determine if I remain laid off in Dallas or employed in New York City.
# 2  
Old 12-03-2009
Are these virtualized servers?
# 3  
Old 12-07-2009
I would start by finding out more about the data that you will be moving. Like What type of application this customer runs. when are they not getting hits. If they are always getting writes to the database then what time of day is slowest for them. Also if this is a heavily used web app expecting no downtime is quite a feat to ask for. But to move the database my suggestion would be to backup the database, restore it on the other server and then setup replication.

then I would point them to the new database so that all new writes will go to the new database while they are getting in between writes poplulated from the old db server.

course this is assuming that they are using
php , mysql , and apache like you said.
Login or Register to Ask a Question

Previous Thread | Next Thread

6 More Discussions You Might Find Interesting

1. Solaris

Server migration - using ufsdump

hi all, i am refreshing my hardware, but i do not want to do a clean installation/reinstallation. I am wondering if i could do - do a ufsdump of the / partition (into a file on a nfs share) - bootup using cdrom in the new machine - mount the boot device/slice, and restore the ufsdump on... (7 Replies)
Discussion started by: javanoob
7 Replies

2. AIX

Server migration

Hi, Existing several p5 server with lpar (aix5.3), also implemented with hacmp. And now planning to buy new set of server (installing aix7.1)and SAN to replace the existing server. My question is, how to perform data migration from old server/SAN to new server/SAN. Suppose I install... (6 Replies)
Discussion started by: Oceanlo2013
6 Replies

3. UNIX and Linux Applications

Server migration from samba+ldap to windows server 2003

Hi, i have a server installed samba+openldap (pdc). Need to migration windows server 2003 (active directory) object users, computers. Where you can read how to do it? Or can tell me how to do it? Thanks. P.S. Sorry for bad english (0 Replies)
Discussion started by: ap0st0l
0 Replies

4. Solaris

Storage Migration on Solaris server

Hi All, I need your help urgently. Below I have given the brief description of the Architecture and the Problem. The brief details of the architecture: We have 5 Containers(Non-Global Zones) running on one T5220 Box. The Global Zone is running Solaris 10. The Non-global Zones are... (6 Replies)
Discussion started by: kamaldeep1986
6 Replies

5. Solaris

Server Migration

Hi All We are having a very old server that is working on solaris 5.6 and oracle7. now We are planning to migrate it to a Solaris 8 and oracle 9 environment. The application software of the server is basically written in ProC and there are few sql ,perl and shell scripts on the server . We... (13 Replies)
Discussion started by: asalman.qazi
13 Replies

6. AIX

Migration from OLD server to NEW one

Hi everybody, I want ask if it is possible to copy all storage structure (VGs, LVs & filesystems) from one server to another. In other words, I want to move my system from old server to new one, so I want the new server exactly have the same sizes and number of VGs, LVs, & filesystems. Thanks... (11 Replies)
Discussion started by: aldowsary
11 Replies
Login or Register to Ask a Question

Featured Tech Videos