HyperVM Migration... Without The Node Being A Slave?
Dec 28, 2008
Is there any way to migrate a VPS from one HyperVM machine to another without the new machine being a slave or part of the same master as the other node? Maybe some kind of simple software that can copy it over? We have root access to the new node, and not the old one. We need to move 3 VPSs over. This is a personal favor for a friend, so I apologize for the lack of specific details. Long story short, he resells VPSs and needs to move hosts (again) as the one he is on turned crappy. He bought his own box @ LSN and wants to put these VPSs on there. It's currently set up as a HyperVM/OpenVZ box, same as the other box that's to be migrated *from*.
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May 20, 2009
Our master node unable to connect to slave node for create, rebuild, manage.
But we can give access to slave with hypervm -> Servers and run anything on it.
I checked firewall, also im stopped iptables.
But master cannot connect to slave.
Where is issue and how can resolve?
Note: i can give ping or ssh access with both server to slave/master!
Help me please.
I have this when i run /script/upcp on main node:
[root@server ~]# /script/upcp
Getting Version Info from the Server...
Connecting... Please wait....
hypervm is the latest version
Executing UpdateCleanup. This will take a long time. Please be patient
License Successfully updated
vps backupdir exists... returning
Updgrading Slave xx.xx.xx.xx...
no_socket_connect_to_server
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May 19, 2009
Wich port used by hypervm (master/slave)
I have csf installed on my server and i need to open needed ports.
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Jun 29, 2009
I had 3 IP pools in HyperVM node. I removed (deleted) 2 pools completely because I had an error trying to create a VPS, told me the IP was being used by someone else. So I deleted the pools completely and I see they still ping. I did a tracert and the IPs come to my server so i know nobody else is using them or that they were assigned to somone else. I rebooted the server and while it was in the process I tried to ping the ips and they didn't respond. When node came up, the ips started pinging again. How can I manually remove the IPs so that my server doesn't respond to the pings and I can add them to the pool and use them correctly.
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Dec 16, 2008
i just buy a dedicated server for vps reselling.
this is my hardware spec :
Intel XEON E5420
4GB Ecc memory
2x250 GB RAID 1
hypervm/xen
the question is:
how to setting ip pool
how to setup a "resource plan"
how to add a guest vps
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Oct 29, 2008
Is it possible to have a Windows VPS on a Linux Overnvz HyperVM Node?
I read about this once though I didn't believe it is possible.
I further sent an email to multiple "Top Support" Companies that have some experience in Windows OS and they quoted me xx$ . However whats funny is on research online there is no possibility of installing a Windows Guest VPS on a Linux VPS Node/Server.
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Jun 27, 2009
Does anyone know how you can move an entire HyperVM (OpenVZ) Node to Virtuozzo. What has to be copied because we tried coping /vz/private/<VEID> and /etc/sysconfig/vz-scripts/<VEID> and we were not able to get the VE to start. We were getting an error:
Starting Container ...
Can't mount: /vz/template:/vz/private/1110 /vz/root/1110: No such file or directory
Container start failed
We tried rebooting the server as some other sites mention but still no luck. Any help is greatly appreciated because when we contacted Parallels they did not seem to have answer. (we are still waiting on a ticket reply though)
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Jun 30, 2009
So a few days ago we had the wonderful experience of migrating Virtual Private Servers from HyperVM to Virtuozzo. After spending endless hours attempting to migrate with vzmigrate, vzp2v and rsync we were getting very frustrated and were just about to give up. With this we decided to contact our datacenter SoftLayer who usually is able to help out. Like always they managed to rise to the challange and save the day providing us with a solution thay may not have been the best, but probably the only one. We must have searched the entire Internet looking for guides and after we found out a solution we knew it had to be posted so that the frustration we went through would never have to happen again. While this solution is a little timely and requires some work it actually isn't as bad as it sounds. Also we have created a little shell scripts that does a good amount of the migration for you. Below I have made step by step instructions so that there will no longer be "no answer" to this question. Also just to let you know we contacted Parallels and unfortunatly we were told that "I can not find anything in our knowledgebase". Basiclly useless support... they regurgiate their online knowledgebase to you. So below is the guide.
Pre-Requisites:
1. Download the Migration Kit zip that includes the shell scripts for the migration.
Migration Kit Download: [url]
2. You must create a new container in Virtuozzo for each HyperVM VPS that you would like to migrate. You MUST use the same VEID and I you need to keep the hostname the same. Also the OS TEMPLATE you pick DOES NOT MATTER!
If you are copying a customer HyperVM template don't worry cause the OS Template has no effect as far as I know. We transfered 30+ VPS's and the OS TEMPLATE made no difference.
3. Stop the container you created and mount it.
Code:
# vzctl stop <VEID>
#vzctl mount <VEID>
For LIVE MIGRATION SKIP TO STEP 4b.
4a. Stop the VPS on the source server (HyperVM) and mount it.
Code:
# vzctl stop <VEID>
#vzctl mount <VEID>
4b. Leaving the VPS running while migrating has a risk of posible database corruption. During our migration we did it this way and we experienced no issues so I think it is safe to say that in rare cases there may be problems but usually not.
5. Unzip the Migration Kit and be inside the folder where it was unziped.
6. Execute the shell script.
Code:
./migrate.sh <IP-ADDRESS>
IP-ADDRESS = the IP Address of the source VPS Node
7. Enter the CTID when the prompt requests it. (CTID = VEID)
8. Enter the root password for the server you are migrating from.
9. The script runs inside a screen session so to back out of it to do other things or start another migration you must hit:
Code:
CTRL + A + D
To list all the screens you have open.
Code:
# screen -ls
To enter a screen session
Code:
# screen -r SESS-ID
SESS-ID = the numbers before the period listed when you list all the open screens.
10. Once the migration is completed a broadcast message will alert you. Also if you check /var/log/migrate/migrate.log will contain all the migrations that have completed.
11. Once a migration has completed you must unmount the VPS and start it.
Code:
# vzctl umount <VEID>
# vzctl start <VEID>
If everything went "ok" than your VPS should start up without issues and should be just like it was on the old server. Lastly I would like to give credit to SoftLayer for the method of migration. Thanks again SoftLayer
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Nov 4, 2014
I have setup Slave DNS using plesk 12. But it is not creating the zone in slave server. I could see log in /var/log/messages of slave server. But DNS zone is not creating. I have followed the KB "[URL] ...." for setup.
Nov 4 13:31:25 li456-187 named[16905]: received control channel command 'addzone testnith.com { type slave; file "testnith.com"; masters { 108.161.131.59; }; };'
Nov 4 13:31:25 li456-187 named[16905]: received control channel command 'refresh testnith.com'
Nov 4 13:31:25 li456-187 named[16905]: received control channel command 'addzone testnith.com { type slave; file "testnith.com"; masters { 108.161.131.59; }; };'
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Apr 11, 2015
We have one Cloud Server hardware node that exists only as the backup location for containers and VMs in Cloud Server/PVA (it hosts no virtual servers). Can it also serve as a Backup Server Node?
A related question, in my case, is whether we can configure a Backup Server Node to use a particular drive/mount/directory, as we can with PVA? I couldn't find any info in the docs about any settings at all for the Backup Server Node.
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Dec 18, 2007
I'd like to run two servers, both will be using lxadmin and tinydns, what would be the best way to run a master/slave nameserver setup, and allow DNS updates to be transferred from the master to the slave?
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Sep 18, 2006
I want to know more about dns servers (master2slave), is there any tutorials how can I do that? I have 10 servers now, do I need to buy 2 more only for DNS?
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Jun 19, 2009
How to configure bind using WEBMIN as slave zone with [url]as master?
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Mar 26, 2008
This week I reached the pinnacle of all time greatest screw ups I've ever done with a web server in five years. During a routine upgrade, my server crashed and basically burned to the point that the technicians at Burst/Nocster felt it would be in my best interest to clear the server out and do a fresh restore.
Fortunately, I had the majorty of files and designs I've done on a safe backup. Unfortunately, the mysql database I had was not so fresh and recent. In there lies my big problem on an issue I really have not seen much information about.
We all know of the mysqldump command that can be used to backup databases and save a .sql file on the server. Its quick, easy, and relatively painless. The problem I have run into is
mysqldump --opt -u nqforum_braduser -p nqforum_nodqdb > /home/nqcom/backup.sql
This would be the command I'd use on my normal mysql dump. However, all of my files and past server information has been installed as a slave hard drive temporarily until I can gather everything I need. Therefore, the command above won't work because it is looking for this mysql database & user that does not exist on the new server. I currently have the slave hard drive path stored at
/mnt/olddrive/
So for example, to get to the website that would have that particular database
/mnt/olddrive/home/nqforum/
So my question for those who know anything about slave hard drives and mysql, how can I get a simple current backup of this database saved to a location, then of course once it is saved as a .sql file somewhere, I can simply run a mysql restore command in SSH to bring it back.
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Jul 22, 2008
I'm not too experienced with this, so I'm hoping someone more enlightened here can help.
Scenario:
I'm trying to build a social network site geared towards old people. I'm using LAMP environment. I want to have 1 mysql master (writes) and 2 mysql slaves (reads). Two web servers will read from the 2 mysql slaves and write to the one mysql master.
Questions:
My concern is this: when a user posts a comment via the webserver, the comment is written to the mysql master. I would like for him/her to see the comment he posted right away so they don't think something failed or went wrong. I'm afraid that replication to the mysql slaves will take some time to sync all of the mysql databases together. How can I work around this? Or am I mistaken and this doesn't actually happen?
How fast is replication? How can I mitigate this delay in replication to show the user instant results of their submission.
The same thing can apply to uploading photos to a user's profile.
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Oct 23, 2013
We have published an article about the 'Slave DNS' Plesk extension in our blog. Parallels does not provide technical support services for this Plesk extension. The extension is intended to serve as example of how certain technical tasks can be accomplished.
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May 16, 2015
I am using the Slave DNS manager and I'm getting the following error in /var/log/messages on the slave server when the master/plesk tries to send change notifications.received notify for zone 'example.com': not authoritative
The domain is pointing to ns1.mydomain.com and ns2.mydomain.com, the domains zone on the master has both of these as NS records. And the SOA record lists ns1.mydomain.com as the primary authoritative nameserver.The zone has not been set on the slave server, what would be the cause here?
Slaves named.conf
bbb.bbb.bb.bbb = Slave IP
aaa.aa.aa.aaa = Master/Plesk
Code:
options {
listen-on port 53 { 127.0.0.1; bbb.bbb.bb.bbb; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
zone-statistics yes;
[code]....
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Apr 25, 2015
I've got a Plesk 12 server with the "Slave DNS Manager" extension installed.I've also got a CentOS 7 server that I would like to set up as a slave DNS server.I've installed BIND on the slave server and opened ports 53 and 953.I've followed the instructions on this page but I can't seem to get a link between the two servers: URL....
I've also tried the config that the Plesk panel provides like the case in this thread, I get the same results: URL....
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Jul 8, 2013
How are the records on slave DNS servers updated ? Does it use the settings in the SOA section of the zone files to determine how often slaves are updated ?
Code:
18 ; serial
14400 ; refresh (4 hours)
7200 ; retry (2 hours)
2419200 ; expire (4 weeks)
3600 ; minimum (1 hour)
Is there any way for master to push out notifications to slaves OR get slaves to update their DNS sooner.
The main reason for this is it seems adding an entry on the master (via the GUI) is taking ages to appear on the slave.
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May 19, 2015
I have a Windows/Plesk installation (Windows DNS), what is the best way to make a slave DNS server?I have two more servers without Plesk, windows and linux, one of then could be my slave server, how to accomplish that?
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Jul 19, 2015
I am setting up slave DNS servers using bind 9.8 on CentOS 6. I have followed the procedure here successfully: [URL] ....
The problem is that even if I see something like the following in named.run on the slave server (which implies the rndc connection worked):
received control channel command 'addzone xxxxxxxx.com { type slave; file "xxxxxxxx.com"; masters { x.x.x.x; }; };'
received control channel command 'refresh xxxxxxxx.com'
received control channel command 'addzone xxxxxxxx.com { type slave; file "xxxxxxxx.com"; masters { x.x.x.x; }; };'
I still cannot query any entries for that zone from the slave DNS server:
$ dig @y.y.y.y xxxxxxxx.com
; <<>> DiG 9.8.3-P1 <<>> @y.y.y.y xxxxxxxx.com
; (1 server found)
;; global options: +cmd
[Code] .....
I also do not see any zone files created anywhere on the slave server.
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Jan 12, 2015
I've setup Bind 9.10.1 on a windows server as a slave DNS server. I've installed the Slave DNS Manager on Plesk 12 for Linux and setup configuration.
New zones are added ok so authentication en communication is working perfectly. But when I delete a zone in Plesk, the zoneconfig file doesn't get deleted on the windows server. I can see the windows eventlog saying "received control channel command 'delzone <domain>'" where <domain> is the zone I deleted. But after that noting. And I see errors after a while because of bind trying to transfer the deleted zone again. The zonefile isn't deleted from c: amedzones...
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Aug 1, 2014
I have setup bind in centos 6.5 and then edited /etc/named.conf and added the lines
The extension produced but I am getting the following error when restarting the bind service
Error in named configuration:
/etc/named.conf:2: unknown option '...'
/etc/named.conf:14: unknown option '*'
/etc/named.conf:21: 'options' redefined near 'options'
The following code suggested by plesk slave dns manager extension
Code:
options {
...
allow-new-zones yes;
};
key "rndc-key-mainserver ip" {
[Code] .....
After I removed ... from the options now I get the following error :
/etc/named.conf:51: unknown key 'rndc-key'
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Jun 16, 2015
I installed Route 53 extension to manage a slave DNS server but when a add or remove some domain the process does not complete, Plesk stays loading without finish domain creation.
When I disable the extension, Plesk create and remove domains without any problem.
What could be happening?
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May 5, 2015
I have recently started using the slave DNS manager in the Plesk extension library. I've found that even for DNS zones that are switched off in Plesk, failed sync/transfers still try to take place between the slave and master. Why is this so?
Shouldn't turning the DNS functionality off in Plesk remove the zone from the slave DNS server?
When a domains DNS functionality is turned off, it removed the zone info from the master, but no command is issued to remove it from the slave??
Domain that is trying to sync/transfer: example.com
Plesk/Master server: 111.11.11.111
Slave DNS: 222.222.22.222
Code:
May 6 08:51:39 ns2 named[1178]: zone example.com/IN: refresh: unexpected rcode (REFUSED) from master 111.11.11.111#53 (source 0.0.0.0#0)
May 6 08:51:39 ns2 named[1178]: zone example.com/IN: Transfer started.
May 6 08:51:40 ns2 named[1178]: transfer of 'example.com/IN' from 111.11.11.111#53: connected using 222.222.22.222#53166
[Code] ...
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Mar 21, 2014
If I change DNS using Plesk Panel the DNS server does not send a notification to the slave server, however if I change DNS directly through the DNS Manager it does send the notifications. Looking around the only thing I can find is an old post [URL] .... I'm not sure if this is related.
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Nov 7, 2009
i'm a vps provider and i'm using this server for vps host
Code:
Dual CPU Xeon 5420, 24GB Ram, 1TB HDD
24GB of Ram
and now i see the used ram is un normal
Code:
[root@216-19-200-162 ~]# free -m
total used free shared buffers cached
Mem: 24064 23865 199 0 541 19509
-/+ buffers/cache: 3813 20251
Swap: 4094 0 4094
[root@216-18-201-162 ~]#
the free ram us 199 of 24GB!
every time when i reboot the server the used ram back normal but after per hours the issues back again
i have contacted the DC and they say that there is no problem with there hardware
the number of vpses in that node is 7 and all the vps have a limit ram.
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Mar 6, 2009
I want to build a VPS Node using Quad Socket Tyan Motherboards and AMD Opteron 2376 Shanghai 2.3 GHz Processor (Quad Core).
I am in doubt since I notice that some providers (at least two rather big provider which I have account) are using Dual Core AMD Opteron 2212.
Is there any specific reason why those providers is not using 2376 AMD Processors? .. is it because the Dual Core AMD Opteron 2212 supports Virtualization Technology, while the 2376 is not?
I will use Xen Hypervisor, usually I use Intel 54xx Processors but looking for *cheaper* solution , so I am really new in AMD Base Server.
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Oct 22, 2009
I build raid10 for VPS nodes. Now, I will use SAN, so all VPS will be created in SAN. With the host server, I assume that I don't need fast disk array, because all the disk requests have been processed in SAN already?
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