Tag Info

Hot answers tagged

7

As a best practice, you should be running AD DS and AD-Integrated DNS zones (ADI zones) on the same server. This is because the DNS records in ADI zones are replicated using AD DS replication and are stored in the directory, rather than using things like a zone transfer to get records across multiple DNS servers. If you want to use ADI zones for your ...


6

How about a zero downtime migration? This is my general plan for such migrations: Set up an ad hoc VPN between the old server and the new server (e.g. with OpenVPN). Copy the entire application from the old server to the new server. Set up database replication between the old server and the new server, with the old server as master and the new server as ...


6

Some of the potential attacks involve putting a rogue router or DHCP server on your network. The best protection is to let the L2 switches filter the traffic. If a switch port goes to a workstation it probably should not send out packets that usually a DHCP server or a router would send. If you want such protection you should look at the protocols that the ...


5

It depends on whether you want them to do anything IP-aware. An ethernet frame is an ethernet frame is an ethernet frame, as Gertrude Stein didn't say; a good switch will repeat it based on MAC addresses without caring what the payload is, so if that's all your switches do - layer-2 stuff like VLANs and port-mirroring - you should be fine regardless. The ...


5

You'll have to reassign or seize the RID master role on a functioning domain controller. Microsoft says: Do not seize the RID master role if you can transfer it instead. Seizing the RID master is a drastic step that should be considered only if the current operations master will never be available again. For more information about transferring ...


4

There is no such mechanism. This is because it is the way DNS and its caching mechanisms work. This is usually handled before the migration by setting the TTL for the A record to the minimum value possible, so that DNS servers keep the IP address cached for the least possible time. However, only in rare cases you can set the TTL to zero, which would ...


4

The answer is yes, and there's no conflicting information. Any person, article or resource that claims this doesn't occur is just plain wrong. The linked article explains the process. This has not changed from Windows 2000 and carries forward all the way through Windows Server 2012 R2. Make note of these sections: The transfer of an FSMO role is the ...


4

There are a lot of different ways to migrate the databases. Backup and restore is the most commonly recommended, but if you have more than 100 databases you might want to script something to detach and attach the databases. I've successfully used this to migrate a very large number (hundreds) of databases to a new server: @ECHO ON set ...


4

Licensing questions aside: First, you can see here: In-place upgrade from Windows Server 2012 Foundation to Windows Server 2012 Standard that an in-place upgrade isn't supported. However, your scenario is supported just fine. Be sure and move over the FSMO roles and properly decommission the Foundations server (dcpromo it and then remove it from the ...


4

Use the native tools, assuming you have a vCenter. You could perform a live-migration or cold-migration (change host and datastore), depending on your license level. However, vCenter may not be happy if the DC is down. Do you only have one domain controller?


3

I would say you have a lot more to consider than just hard drives. You are intending to transfer to a completely different virtualization package, which will take much more than a days worth of work. Theoretically you would need to: - Transcribe the VM configurations (more than likely by hand) from Microsoft's spec to QEmu's spec. - Convert the VHD images ...


3

For Chef Server 11, they switched from CouchDB to Postgres which rules out couchdump. chef_server_backup.rb has also been abandoned, but knife-backup can handle both 10 and 11. If on both systems you have knife-backup installed and a knife user setup, you can originalserver$ knife backup export -D ~/chef-backup/ Copy over ~/chef-backup/ to the new ...


3

Another reason for this error is when you have 7z.exe but do not also have 7z.dll - both are needed for the commandline program to work properly. Copying just these two files from the normal 7-zip GUI install folder is enough for a portable version of the commandline program on our CI.


3

I guess for now it's your responsibility to make sure data is available. You might want to check https://github.com/ClusterHQ/flocker which is specifically designed to take care to take data along with docker containers. I think it relies on ZFS features which may rule out its usage on CoreOS. The only alternative I could come up with is using a highly ...


3

See, you were talking about Active Directory migration - suggest you edit your question to include more such details. Have a look at the following articles for some guidance. http://blogs.technet.com/b/canitpro/archive/2014/04/02/step-by-step-active-directory-migration-from-windows-server-2003-to-windows-server-2012.aspx ...


3

Move to new Service / their own domain. Have the current ISP setup a mail forward to the new email address, and hopefully an autoresponder that says something along the lines of 'In order to better serve you, we are now XXX@company. please update your address books'. Gmail has an option to pop into your old mail account on a schedule, other cloud services ...


3

Scary the situation you're in, but not impossible, and can be solved easily by enabling "SMTP matching", which is a process of transferring the source of authority from your Office 365 to your local active directory. this can be achieved by matching the SMTP address of your Office 365 accounts to the SMTP address of your Active Directory accounts, and using ...


3

Yes, you can move the virtual machine from one host to the other. It's less than ideal, since your VM will be scheduled across two physical CPUs, but it will definitely work.


3

There's a tool made for this very thing, called the Microsoft Virtual Machine Converter (currently at version 3.0). As to your questions about time and the best way to do this, those are highly variable, environment-specific things you'll have to figure out on your own. Shouldn't be too hard - pick some typical VMs, time their conversions, extrapolate how ...


3

No, you cannot transfer IP addresses like that in general. You can only transfer IP addresses if you have control over both networks' Internet-wide routing.


3

Dovecot allows you to configure a master user which can be used to access user mailboxes without knowing their passwords. The master user can be used with imapsync (as well as most other IMAP tools) to copy the messages between servers. From the dovecot configuration file on my server: By adding master=yes setting inside a passdb you make the passdb a ...


3

Ugly, but this would work. Except when it doesen't;). Be very careful when specifying the partitions and when replacing the disks try it in am VM beforehand, setup the virtual disks like your hardware an dry run it 1 or 2 times. make a scrub before you start and take a look at the S.M.A.R.T info from the disks. You would not try this with an already ...


2

Make your old server a mx backup of the new one. For this you will need to have both servers as MX for your domain, but the old must have a bigger number as priority: example.com. IN MX 10 2.2.2.2 example.com. IN MX 20 1.1.1.1 Then you can add your domain into relay_domains: relay_domains = $mydestination, example.com Important to ...


2

I think those are the main things. But I don't think any list is as important or useful as migration testing. Set up a staging environment with your new web and database servers, migrate the application, and test it. When it passes your tests, you can have some confidence that it's ready for production. And you can do load testing in the new environment ...


2

AFAIK, The CPU difference won't stop you from adding the host to your vCenter server. I have a client that has three vSphere 4.1 hosts in a vCenter server cluster all with different CPU's. You could migrate the powered off virtual machines to a new host without connecting this host to the storage array if you have a local datastore on the other hosts that's ...


2

This can be done and I have done that before. You can access a share with a random DNS name pointing to your server even if it is not the Active Directory name of the server. Obviously you will need a small down time to do this. Ultimately, to avoid this kind of issue in the future, you want your user to access file server resources through an abstraction - ...


2

We can't help you with licensing here, but I can offer a couple tips with SQL. You will want to take note of the SQL features you have installed on your SBS 2003 box, and setup the installation the same way on the 2012 machine (features, instance name, etc). You can script out the stored procedures and run them on the new instance, and restore your ...


2

Does /usr/bin/pygrub file really exist on your Dom0? Have you tried to run it without PyGrub? Remove bootloader and add kernel = '/vmlinuz' ramdisk = '/initrd.img' to use host system's kernel. If you haven't configured GRUB on the guest system properly, PyGrub will not be able to boot. Also check this ...


2

You need to start from scratch on Office 365 and perform a cutover migration following the detailed step-by-step instructions here. You will need to obtain a valid public SSL certificate and ensure that autodiscover and outlook anywhere (RPC over https) are correctly set up and working. You can test this at http://exrca.com. If you're unable to make this ...


2

You can enable IP forwarding and then do forwarding of the traffic at the IP level (see http://www.debuntu.org/how-to-redirecting-network-traffic-to-a-new-ip-using-iptables/ for an example). I believe this has a benefit over proxying because you maintain the IP address of who is connecting to the website and that's logged properly.



Only top voted, non community-wiki answers of a minimum length are eligible