As the title says, I regularly download my Rackspace images for backup of my VPS, however I'm wondering if it's possible to run them locally on KVM (for example) so I can run tests on my application without affection production.
I've been using Citrx Xenserver for awhile on a few machines that don't support Hardware Virtualization as a test for various small servers.
I recently have been experimenting with moving the PV Vms between machines but Xenserver gives me errors that roughly say I need to have homogenous hardware for this to work.
Because of this I haven't been able to setup XenMotion or any of the nice features that come with server pooling in Xenserver.
I'm considering moving away from XenServer, however I can't seem to find a Hypervisor that explicitly supports non-homogenous clusters.
On a side note, we do have a few idenitally configured Dell 1950s that haven't had any VM solution setup on yet, so if we can find a solution that can allow us to move PVs to those as well that would be great. Non free solutions are OK as well.
What hypervisor will allow this? Thanks!
I'd have a network like this currently. Basically, It's two Xenservers connected to our colocation provider's switch via one ethernet cable per server. Each server currently has a second ethernet card which storage is attached to (iSCSI). Each of the VMs (and Xen hosts) have a public IP. All the VMs communicate with each other via their public IP.
What I'd like to setup is a situation like this where each VM has at least a private address and only public facing servers would have a public IP. As well, storage would be connected to the switch instead of directly attached. As the private network would be inaccessible to the outside world, I'd like VPN so I can connect to and administer the private network.
That said I don't know very much about networking (in terms of setting this all up)
So the questions are:
1) How do I virtually network multiple VMs (on seperate hosts) together (for the private network)?
2) How do I set up virtual networking in Xen center?
3) would it be preferable to get a switch that supports VLaning and segment the network that way?
I'd be grateful to hear any advice the community has on these matters. Thanks in advance.
Possible Duplicate:
How to copy user priviledges with MySQL?
I recently migrated a bunch of under utilized physical servers to one powerful server running Xenserver. I then turned one physical server into a database server.
Now, the issue is each physical server had its own MySQL instance, with users and databases. I know I can export each DB and import them into the database server, however what I need now is a way to import the users and permissions.
How can I do this?
I have a cluster of servers running Xenserver 5.6 that host web email and VoIP services. I'm currently considering setting up a chrooted bind server on each Xenserver host (I mean on the actual server not inside a VM)
Is this a bad idea?
I keep reading conflicting reports regarding Xencenters' management capabilities.
Is it true that you have to be on the same subnet to connect to Xenserver via XenCenter?
I have two servers that have a nearly identical (software) configuration. We are upgrading the web servers to run windows server 2008 R2, one already is however the main one (that currently has sites) is on WS2008.
Now, the old server is ns.mydomain.com and the new server is ns1.mydomain.com. Since dns automatically fails over to ns1.mydomain.com I'd like a way to move all the vhosts to the new server.
Is there an automatic way to move / recreate all the vhosts on the new server?
I have figured out how to migrate the DNS records already DNS Migration and since both servers are on the same private network migrating the website data isn't a large issue. Every site is running PHP & MySQL and the MySQL server is external so the records won't have to be moved.
Thanks
I'm having a problem with a windows server 2008 server. After it was demoted from a AD domain controller, it is unable to get to the login screen (it reboots after applying user settings).
Is there a way to recover files from this system via something like a windows live CD, or of course fix this issue?
I have a 50 megabit connection at home and a 1Gb connection at work, yet transferring files between home and the work servers is extremely slow, about 300KB/s, using HTTP FTP or RD.
What should I do to increase the transfer rate?
EDIT: My home connection is 50/10, however, I'm more concerned about downloads at the moment. The speeds I was talking about was only for a single file using those methods. My biggest concern is that clients will be getting those types of speeds from the servers as well so I may be looking in the wrong place for the problem.
EDIT #2: After taking the advice of many people here, I tested with iperf and it reported 3.03 MB/s transfer and 2.50Mbits/s bandwidth (I'm not sure what that means, since I'm not sure how transfer could be higher than bandwidth). However, assuming that I can transfer at 3MB/s what program / protocol would take advantage of that best?
I'm trying to find a way to minimize the amount of space the VM server and storage take up while being able to use ZFS as a file system.
I've come up with either using xVM on Solaris or using XenServer with a solaris VM installed on the internal harddrive while storing the rest of the VMs on the storage array controlled by the solaris VM.
Would this work or is this a bad idea? If so, what is a better way around it? Thanks
OK I'm not very familiar with raid so I apologize in advance if I don't explain this properly.
I have a Dell PE2850 I've been using for a few years as a web server. Recently it complained that one of the drives in the system raid 1 array was failing (though hadn't failed yet). Not wanting to risk the second drive failing I took two brand new 146GB U320 drives over to the data centre to replace the aging 36GB U320 drives.
The configuration at this point was two 36GB drives in slot 0 and slot 1, these two drives were raid 1. In slot 2 there was an extra 36GB drive that wasn't in use (wasn't initialized or part of a volume).
I went into the Dell server admin application and off-lined the spare drive and off-lined the failing drive in slot 1. I then put the 146GB drives into slots 2 and 3 (1 is empty now). I ran the create volume wizard and put the two 146s into a raid 1 volume. At this point everything is ok.
I got the Norton Ghost disc out (I was planning to mirror the OS to the new volume) and rebooted the server. At this point it says that none of the drives are responding check connectors, cables and power. I did and all the drives were green.
I asked my friend and he said it probably didn't like the fact there was nothing in slot 1, so I moved a 146GB from slot 3 to slot 1 and it now says there are no logical volumes.
When I go into the volume configuration menu it shows all the drives are ready.
How do I get it to recognize the original system volume drive in raid 1 so that I get my data back?
I appreciate any advice so I can avoid this problem in the future.
I feel like an idiot for having to ask this, but essentially, I have a few server in my private data centre that I would like to repurpose for web hosting. I am currently hosting my site with goDaddy and after moving my servers to colocated hosting, I'm not sure how to assign domains from godaddy over to my servers. Also, I'll need to host multiple sites from each server so how will I go about doing that from a technical level?
Do I need to use a static IP on my servers? Do I purchase that from my colocation provider? How do I make sure that www.mysite1.com and www.mysitetwo.com both redirect to the same server but different sites?
Thanks
I am setting up a 16TB Storage server (which will eventually double in capacity) to store media. This server needs to be read from by two windows server 2008 clients which host our companies applications. I've heard of iSCSI but it seems from what I've read that iScsi treats the target server as if it was directly connected hard drive thus making it very hard to share with two clients as they would randomly write and read data which would mess things up.
So, what software / hardware combination can I use to get high read speeds on the windows side? Right now I am considering 2 dual gigabit ethernet nics with TOE and NFS but I don't want to purchase the nics until I'm sure that it will be fast enough.
Thanks