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 ...


7

If it's only Active Directory that you want to move then one possible solution can be is to install a secondary Domain Controller(DC) in your VM, transfer all FSMO Roles to the VM and then demote your older DC. Check the following links for step-by-step process Adding a 2012 Domain Controller to an existing Domain Demoting a 2012 Domain Controller ...


6

There are other good answers to this, but they're fairly theoretical. I thought it might be useful for you to know that I've done this, on a number of occasions, and it's fine, but on CentOS servers using dovecot and sendmail, and I use mbox as a storage format. I know you're using postfix and Maildir, and I'm sorry I can't shed specific light on that; I ...


5

You should handle that migration at the application level, so that you have a clean start with the new server and no leftover migration cruft (like hypervisor tools and drivers) lying around. Start with a list of all the things the server currently hosts, and migrate those roles individually onto the new server using migration procedures specific to each ...


5

You will have to test to find out. There are many variables such as the speed of your storage system. Consider restoring your tar archive or backup while the old system is up. Then during the downtime use rsync to copy the remaining changes. It still has to check many file modify times which takes time, but there is much less I/O and network transfer. This ...


5

While there are tools that can rename a domain, it can be a complicated process. You have a couple options. 1. You can add an alternate UPN so that @domain.com is valid. 2. You can migrate to a new domain. I'd try the upn route first


4

Rsync may allow you to sync the files without taking the server down. For example, you could do a sync while in production, then take the server down, sync again to make sure you got everything that changed in the mean time, and then turn on the new server. The second sync will be incremental, and would take a fraction of the time of the whole, minimizing ...


4

Under the configuration settings for the AD domain, you need to make sure that it's configured to allow devices to be joined. There is more information here - https://azure.microsoft.com/en-us/documentation/articles/active-directory-conditional-access-device-registration-overview/?rnd=1


4

The first answer from jornane is correct so far as it goes, however I do not believe it addresses what the OP is really trying to get at - which is how best to handle migration of email and accounts, rather than how to handle DNS. Ordinarily there are many ways to handle this task, but because we are dealing with only one server which will be going through ...


3

Your DNS TTL on your address record is set to 86400 (seconds, which is one day). Thus, when you make a change, resolvers on the Internet which have cached the old record may not update it until as long as a day has passed. It's best practice to shorten the TTL to as low as possible (usually 60 seconds) in advance of the actual change of IP address, so that ...


3

If you don't have a CloudFormation template for your existing VPC resources, create one. Then re-create the VPC on the other AWS account by creating a CloudFormation stack with that template. You might find CloudFormer useful when creating the template based on your current VPC: ...


2

TL;DR E-mail servers will keep messages in their queue a few days if they can't be delivered. Normally during a migration, you'd have to change DNS records, but since you're staying with the same server (same IP) there's no need for that. You can simply shutdown the server, install the new one, and you're good to go. The only important thing is that you ...


2

In-place upgrade of SharePoint 2013 Foundation to Full is not supported, the only supported upgrade type in this case is Database-attach upgrade. which the link you provided already mention (building a new environment and moving the database to it) Review supported editions and products for upgrading to SharePoint 2013: ...


2

Export both trees (cn=config and your regular data) into LDIF, import them back on the new server (cn=config first). Done. Also, cn=config is essentially just a collection of LDIF files and it might be possible to just copy this collection to the same relative location on the new server (while slapd is not running).


2

Turns out Server 2012 R2 Essentials is not compatible with AAD Connect. Essentials has a built in Azure directory sync however, which appears to do a similar job.


2

If you add a second domain controller--which doesn't have to be beefy for two users--then yes, you can retain the existing AD accounts. Depending on the version of SBS08 you have, you might even have a copy of Windows server 2008 that came with it. Conversely... You can just create live accounts for yourusers@example.com and let them use those for ...


2

Domain rename worked just fine using Microsoft's rendom.exe utility (I'd say it was easy, perhaps because there was no exchange server involved). Service logons were changed for SQL Services and everything worked smoothly.


2

disclaimer: I work for Linode To migrate your stuff, there're a few ways you can do it. You can make an image of your entire disk (this is EVERYTHING, including data files, DB, OS, etc). One popular way to do this is to boot into Rescue Mode (Finnix) and dump your disk to an IMG file used DD. You can then download the image over SSH - Block-level Backup ...


2

I think you are confused about what components are involved and what you have paid for. ESXi is the hypervisor that runs on the hardware. vSphere is the software used to manage ESXi hosts. When you use the free version, you get a single ESXi license that you can manage with vSphere. When you purchase the software you are able to run more that one instance ...


2

Got it. Apache 2.4 has additional security features. I needed to add this to /etc/httpd/conf/http.conf and restart the service. <Directory "/www/virtualhosts/example.com"> Options Indexes FollowSymLinks AllowOverride None Require all granted </Directory> I can haz website. Also, I moved the default 00-ssl.conf file ...


2

This is fairly fundamental. Remove DC from domain using the normal procedure. DC becomes a member server in the domain. Remove member server from domain. Create new domain using the normal procedure. Job done. I'd personally be considerably happier if "re-image server" was included as a middle step to ensure that any info/cruft on the server didn't ...


2

Please use a account that can access all files. How do you do the backup if even an admin can't look the file ? If you use a service account for the backup, use the robocopy under that account. If anything fail, please take ownership of the drive to be able to copy the data, but be aware you might have to redo from stratch the security on the new drive.


2

Probably you'll hit the DNS caching. First you'll need to wait for cache refresh of your visitors providers, then, if you decide to switch back, you'll need to wait again. Many Internet providers tend to override TTL and set it to 1 hour minimum. In my experience, visitors came to old IP many hours after the DNS change. I suggest to use some kind of ...


1

OK, so first of all here is the video tutorial for you: https://www.youtube.com/watch?v=sbrUtfkkVUE But before jumping on it, please consider reading the Selecting the Appropriate Type of Replication - maybe, Snapshot replication will fit you better for some reason. If you are completely sure that Transactional replication is the way to go for you. check ...


1

Thanks to gf_ and Drifter104 for the comments. Drifter104's comment about matching the location got me looking into the different matching patterns and eventually landing on the config below. # Media server Redirect and Robots directive server { listen 80; listen [::]:80; server_name oldmediaserver.domain www.oldmediaserver.domain; ...


1

There is a step by step guide available here (http://blogs.technet.com/b/ad/archive/2015/05/28/azure-ad-join-on-windows-10-devices.aspx) that shows how to configure Azure AD to accept Azure AD join on Windows 10 devices. /!\ carefull : Azure AD join can be use only on Pro, Education & Enterprise editions of Windows 10. No support of this feature on a ...


1

I would install Cent O.S. on the Physical Machine. This cuts down on the rsync time, allows you to setup permissions and grub for the physical machine. Then rsync from the VM. I see no reason to live boot in this scenario. You probably don't want to rsync all of root, so you will need some excludes. What you exclude varies some depending on your environment. ...


1

Since the Physical Server will have different hardware, I would not suggest cloning the disk. I would recommend installing the same version of CentOS to physical server and then copy relevant folders/directories. Just be selective when you copy /etc and other system folders.


1

The answer by @23Stinger is the best option, but if you really need to move the existing OS to a new hardware it shouldn't be a big problem. Since Windows Vista (and Windows Server 2008), moving installed Windows instances between different hardware became much easier. Previously, to run Windows XP, Windows Server 2003 and older on a different hardware, you ...


1

The migrate_passwd.pl only parses the password file you give it as an argument, but this only works for old style (i.e. non-shadow password) systems. Systems with shadow password files only store an 'x' character in that file, the real password is stored in /etc/shadow. Looking at the source of that script it should do this. But, alas, you need to be root ...



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