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25 votes
Accepted

How to migrate LDAP (database,schema,configuration) to other machine

The solution : So here's what I did to make this works. Stop Slapd on main server Slapcat databases from the main server (There are 2 database that needs to be exported. I use the "-n" tag slapcat -...
J_LDAP's user avatar
  • 608
16 votes
Accepted

Best way to change site IP address - from the end user perspective?

No, you can't. The problem is that DNS response can be cached anywhere between user and DNS server and there is no way to invalidate them. What you can however do - as soon as you have data in sync ...
Yarik Dot's user avatar
  • 1,583
12 votes

Moving many sites to new server - whats the quickest way to update their DNS records?

The term you're looking for is CNAME, and the answer to your question is both yes and no. First, here's an example of how a CNAME works in a zone file. example.se IN SOA ns1.example.se. ...
Jenny D's user avatar
  • 28.1k
10 votes

Where should migrations be run on elasticbeanstalk deployment process?

You can try the flag: leader_only in an ebextensions configuration file. This flag will make your migration run just once even if you have the app deployed in many instances. For example, save this ...
Tulio Faria's user avatar
9 votes

issue when trying migration via Microsoft Virtual Machine Converter

You can try out StarWind V2V converter to convert your VMware VM to Hyper-V (Windows) VM. StarWind V2V does support Windows Repair (in case if the VM is Windows-based) and does have possibility to ...
Net Runner's user avatar
  • 6,249
8 votes

Dovecot Migration and old mails

I tried the accepted answer and it failed - the dovecot versions in play are probably too far apart and we also switched the underlying MTA. So here is a more robust solution: doveadm import Assuming ...
flowtron's user avatar
  • 215
8 votes

How do I move a server to a new power source without powering it off?

Just schedule downtime and turn the server off. Without a dual power supply setup, you don't have any other reasonable options. If there are business constraints or otherwise, you should note those ...
ewwhite's user avatar
  • 198k
7 votes

Turning a running Linux system into a KVM instance on another machine

P2V Linux physical to virtual KVM - no automated tools Live migration of P running Debian Wheezy 7.11 to V KVM on Proxmox VE v5.4 mdadm software RAID1 P disks to KVM virtio disks migrate from large ...
Kyle's user avatar
  • 554
7 votes
Accepted

KVM Live or Near-Live Migration from LVM to filesystem backend

KVM/libvirt supports VM live migration with storage migration (a shared-nothing setup), albeit with some limitation. Your main problem is that storage pools have different configuration, so I am not ...
shodanshok's user avatar
  • 50.9k
7 votes

issue when trying migration via Microsoft Virtual Machine Converter

Microsoft Virtual Machine Converter is dead in the water since mid-2016. It's not supported, not maintained anymore and while you can find binaries still it can't do anything with VMware ESXi versions ...
NISMO1968's user avatar
  • 1,060
6 votes
Accepted

How can I convert a iSCSI system disk from XenServer to another format

To get disk image do P2V and/or V2V: attach iSCSI to Windows by ISCSI initialtor. create VHDX using Disk2vhd (https://technet.microsoft.com/en-us/sysinternals/ee656415.aspx) convert VHDX to QCOW ...
Mr. Raspberry's user avatar
6 votes
Accepted

imapsync or PHP to migrate email

Nothing I've ever seen beats the quality and reliability of imapsync. What it does appears to be an easy problem but it's really not and Gilles has worked out countless small problems over the years ...
Sven's user avatar
  • 99.6k
6 votes

How to migrate a VMWare vmdk to Proxmox 4.4 with local-lvm storage

That's a workaround for importing vmdk to proxmox vm. And that is what I've done. 1) You can as its as a lvm. You can look at https://www.howtoforge.com/linux_lvm about lvm. Brief structure; pv ...
Cem Taylan Bozkurt's user avatar
6 votes
Accepted

High Postgres-RDS CPU usage after migration

We fixed this ourselves: The problem was, we didn't shut down our background service, which made several transactions while updating our software and the db. These transactions polluted the database. ...
trnc's user avatar
  • 708
6 votes
Accepted

Ubiquity Unifi wont accept login after migration

The issue was I made the wrong backup. I made the Backup at Settings-> Site -> Export Site which seems to be insufficient. I read that on a Migration how-to. Settings -> Maintenance -> ...
Marco Rebsamen's user avatar
6 votes

Renaming domain controller during migration

Doing this isn't worth the potential headache. I've been through this operation when it didn't work correctly and in the end wished I hadn't undertaken it. Is the name really so important? This seems ...
joeqwerty's user avatar
  • 111k
5 votes
Accepted

Restarting a Hyper-V machine in non-clustered host with shared storage

a) A cluster will solve all the issues you’ve mentioned and this is the most proper way to do what you need. b) You don’t need a third machine to act as a DC. Just create a virtual machine or two ...
Net Runner's user avatar
  • 6,249
5 votes

Fastest way to move multiple terabytes of information

The fastest way to move such large volumes of data is still Sneakernet. Thus, Amazon Snowball. This device gets shipped to your location, where it can move up to 80 terabytes of data directly off your ...
Michael Hampton's user avatar
5 votes
Accepted

Migrating from DynamoDB to RDS

8 millions documents is not that many, I wouldn't spend too much time trying to over-optimise a process that in the end may run only once and only for a few minutes. If you scale up the DynamoDB ...
MLu's user avatar
  • 25.5k
4 votes
Accepted

How to export address book from Zimbra?

Not sure if you want to do this on a Zimbra server, but if it is a server you can use zmmailbox with a getRestUrl for almost all things that can be done in the web interface. Become the zimbra user ...
Micha Kersloot's user avatar
4 votes

imapsync or PHP to migrate email

I also wrote an online GUI for imapsync, Imapsync online. It has run with success for more than a month. Imapsync has now a builtin load discharge mechanism upon online context: when the load is too ...
Gilles LAMIRAL's user avatar
4 votes

Best way to change site IP address - from the end user perspective?

In theory, setting the domain's TTL to something low and waiting for that change to take place, then changing the IP, should result in a near-transparent migration. After all, that's the whole point ...
Lightness Races in Orbit's user avatar
4 votes

Change server's IP with zero downtime

Easiest way to do this doesn't involve proxying through the old server: Lower TTL to be something like 300 seconds. Wait for at least old TTL for caches to expire. Change the IP when there's less ...
Esa Jokinen's user avatar
  • 50.1k
4 votes
Accepted

Active Directory migration from Windows 2003 to Windows 2016

while single-label domain are deprecated, I really need to keep it running as-is. I evaluated both a domain rename and/or a domain migration to a new name, but they simply seem too much to ask for ...
joeqwerty's user avatar
  • 111k
4 votes
Accepted

Migrate from old to new postfix/dovecot mail server

The reason for me not being successful with finding a good dovecot<->dovecot copy guide was that there is an easy and more generic imap<->imap way of doing it. (For example ImapSync Thanks Sven ...
andymel's user avatar
  • 211
4 votes

Live migration without stopping source VM after migration

This isn't possible with live migration - there's no way to prevent libvirt switching execution to the target VM & tearing down the source VM once migration completes. Fortunately you don't need ...
DanielB's user avatar
  • 1,728
4 votes

CentOS 6 to RHEL 8: Migrate to New Hardware then Upgrade OS -OR- Upgrade OS then Migrate to New Hardware

Neither. Install the new OS in the new hardware, and then migrate your workload.
Michael Hampton's user avatar
4 votes

GCP Project Migration Option Unavailable

you probably don't have the error anymore but since I've seen the same bug today, I'll give a workaround. So basically the problem is that the migration button stays grayed our because the ...
Globox's user avatar
  • 41
4 votes

Migrating Ubuntu 18.04 LTS from hyper-v to ESXi

You can try using StarWind V2V Converter to migrate you Ubuntu 18.04 VM. I have just tested conversion of newly deployed Ubuntu 18.04 on Hyper-V to ESXi. No issues so far. Might help: https://www....
Stuka's user avatar
  • 5,865
4 votes
Accepted

Using DD to clone a 600GB drive using SSH to remote location with only 60 GB of allocated data [server migration]

Ok, guys... finally, server migration was executed with status SUCCESS! Data copy time was aprox 5hs 30Min. Command & total time: dd if=/dev/sda bs=5M conv=fsync status=progress | gzip -c -9 | ssh ...
Diego Ferrarese's user avatar

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