To Do Virtualization Inside VPS
May 12, 2009
I have this nice vps, but its on linux, and I always wanted to run windows apps on the vps, because of the nice configuration. I already tried wine, but most of my windows apps don't work, cuz they require .net framework to run.
I tried to instal vmware server and virtualbox, but both of them complain about a kernel problem, they are unable to locate my kernel source, so they can't run.
I am linux newbie, and i am running on a centos 5 operating system.
Some people say its impossible to run virtualization 'inside' virtualization, but i already read some people that say its possible.
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Jun 28, 2009
Which virtualization technology is better? Hardware level or software level? My friend suggested me to go for software level virtualization. However, I am still concerned about the technology as to which I should choose?
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Jun 28, 2009
Which virtualization technology is better? Hardware level or software level? My friend suggested me to go for software level virtualization. However, I am still concerned about the technology as to which I should choose?
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Feb 22, 2007
why this is happening?
Feb 22 04:58:31 la1092 kernel: ata2: command 0xc8 timeout, stat 0x50 host_stat 0x24
Feb 22 04:58:32 la1092 kernel: ata2: status=0x50 { DriveReady SeekComplete }
Feb 22 04:58:32 la1092 kernel: Info fld=0x2d7e, Current sdb: sense key No Sense
Feb 22 04:58:32 la1092 kernel: ata1: command 0xc8 timeout, stat 0x50 host_stat 0x24
Feb 22 04:58:32 la1092 kernel: ata1: status=0x50 { DriveReady SeekComplete }
Feb 22 04:58:32 la1092 kernel: Info fld=0x4632f99, Current sda: sense key No Sense
Feb 22 04:58:32 la1092 kernel: ata2: command 0xc8 timeout, stat 0x50 host_stat 0x24
Current setup is nginx, lighttpd and apache as web servers.
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Aug 17, 2007
What would I have to add inside .htaccess to allow perl scripts to run?
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Jul 27, 2008
I've been using Clearancerack for about 4 or 5 months now and feel I should write an honest review about them considering there really doesn't seem to be too many.
Ever since the start several months ago, I've had nothing but a pleasant experience working with Chris and clearancerack.
So, here we go they get a :
Setup: 10/10
The setup is stellar. The first server I ordered was up the night that I ordered it (only a few hours) all ready to go. The servers even come with a free apc remote reboot port!
Pricing: 10/10
You could not ask for more affordable pricing than that of ClearanceRack, considering the extraordinary support, network, and all around company. Their prices are cheaper than those of the highest quality competitors, yet provide even higher quality service!
Even collocation pricing is very affordable! I will probably be sending up a few nodes in the next several months.
Network: 10/10
There has not been one second of downtime in the month's that I've been there. There was an issue with the network routing once, using bandwidth suppliers that the DC has connections to, yet Clearancerack does not use. This was fixed within several hours as well.
The network consists of a BGP mix of Peer1, All Stream, Shaw Big Pipe, MCI and peering to TorIX.
Almost all of my users experience faster downloads around the globe on the ClearanceRack network, than several of the other networks we've used throughout the US.
Support: 11/10 - Yes 11...
The support is stellar. They provide 24/7 E-mail (it really is 24/7) and REAL HUMAN Phone support (you won't get the usual leave a message, unless they really are busy and cannot take your call).
At any time of day you email them, you'll have a response within minutes, even sales!
We've had one issue with one of our nodes in which Chris had to go into the datacenter to take a quick look. The issue was resolved in 30 minutes at the most.
Any requests we've made, whether it be licensing, IP allocations have all been handled extremely quickly, no matter what time of day it is.
Company:
Many times you'll hear people say, "They're great for a small scale company." Meaning, they're decent, but do have their downs that the higher scale competitors don't. Its not like that at Clearancerack. Every single thing about them is stellar, and the service is MUCH better than service I've received at various considered "higher scale and known" datacenters around the globe.
Clearancerack, ran by Chris - is ran by REAL people, wanting to make a REAL difference in the hosting market, and he/they are doing an amazing job at that.
You don't experience any poor customer service that you'll experience elsewhere. They are 100% honest with any sort of question, issue, or comment you may have. You WON'T get any of the lies, or uninformative information you receive elsewhere when an issue arises.
Personal:
Chris, I will continue to be working with you for many years to come, as I hope many of the current subscribers, and the future do to. Someone like you deserves the very best, and should GREATLY succeed in their business career. - Thank you for everything Chris! - You really know what hosting is all about.
Thats It!
Thanks for taking the time to read this review.
Generally you won't find a honest review with the ratings that I've given these guys, but THEY do deserve it, at the very least. I do not have one complaint about them as I do many other providers, and I've tried many throughout the globe.
I hope you will go ahead and try ClearanceRack for your dedicated solutions needs. They have no contracts, so you can sign up for one month, test out the service and make a final decision (although I can pretty much guarantee you will stay!)
Hostingcon:
If your going to hostingcon, check em' out! They have their own booth there!
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Sep 16, 2008
I need several Windows VMs to test out some softwares and I plan on using virtualization technology to cut some costs.
I have a Linux(Debian Etch) dedicated server sitting to accomplish this.
Specs are Quad Core Xeon 2.13Ghz with 4GB Ram/500GB HDD.
Now if I were to choose between Xen 3.1 and VMWare Server for the virtualization technology which would provide better performance?
I tried Windows on Xen 3.1 with PV Drivers and it seemed some what slow, but I'm not sure what the case was there so I can't say which would provide better performance overall.
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Nov 19, 2008
There is serious clock skew all across the 4 CTs I have put in an OpenVZ HN which runs Debian GNU/Linux, the kernel Linux is v2.6.26, waldi tree. The HN shows correct time, the CMOS RTC is bang correct.
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Jun 5, 2009
I connect to my email on my dedicated cpanel/whm server by TLS/SSL (similar to instructions here: [url]..same ports, etc.)
Today I login & get a "This server's certificate expired"
But it didn't. I purchased a NEW one June 1st. Why is thunderbird grabbing my old ssl cert? The website's https:// works perfectly.
I also checked the server ssl self-signed certs and all are up to date.
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Mar 22, 2007
I have a PIX501 firewall with a wireless network attached to the outside interface and our local network attached to the inside interface.
I've setup access lists to permit the wireless clients attached to the outside interface to be able to access services on our inside interfaces.
The wireless clients are on a totally seperate /24 subnet.
Now everything seems to work fine with nat statements for our local wired subnets for example wirelessClients accessing the email server etc however the wireless clients cannot access the internet.
For the wireless clients to get out onto our internet connection they have to take the following path
wirelessLaptop - CiscoAccessPoint - OutsideIntPIX501 - InsideIntPIX501 - CiscoSwitch - InsideCorporatePIX515E - OutsideCorporatePIX515E - Internet
Below is a cut of some of the PIX501 config that the wireless clients are connected to.
name 10.1.1.2 accessPoint
name 10.1.1.0 WirelessLan
name 100.100.100.1 pix515fw
object-group network WirelessLan
network-object WirelessLan 255.255.255.0
object-group network WebAccessNetwork
network-object pix515fw 255.255.255.255
object-group network InternalAccessNetwork
network-object ..All our local servers here...
object-group service WebAccessUDP udp
port-object eq domain
object-group service WebAccessTCP tcp
port-object eq www
port-object eq ftp-data
port-object eq domain
port-object eq ftp
object-group service InternalAccessUDP udp
port-object eq all our local server ports
object-group service InternalAccessTCP tcp
port-object eq all our local server ports
access-list outside_access_in permit udp object-group WirelessLan object-group InternalAccessNetwork object-group InternalAccessUDP
access-list outside_access_in permit tcp object-group WirelessLan object-group InternalAccessNetwork object-group InternalAccessTCP
access-list outside_access_in permit udp object-group WirelessLan object-group WebAccessNetwork object-group WebAccessUDP
access-list outside_access_in permit tcp object-group WirelessLan object-group WebAccessNetwork object-group WebAccessTCP
ip address outside 10.1.1.1 255.255.255.0
ip address inside 100.100.100.2 255.255.255.0
nat (outside) 0 WirelessLan 255.255.255.0 outside 0 0
static (outside,inside) accessPoint accessPoint netmask 255.255.255.255 0 0
static (inside,outside) InternalSubnet1 InternalSubnet1 netmask 255.255.255.0 0 0
access-group outside_access_in in interface outside
route inside 0.0.0.0 0.0.0.0 pix515fw 1
route inside InternalSubnet1 255.255.255.0 OurLocalRouter 1
So my question is how should I go about giving the access for the WirelessClients to be able to open web pages on the internet? For that to happen
the traffic has to pass through the outside interface on the 501 firewall out of the inside interface onto the local switch and then back out of our
main PIX515E to reach the destionation.
I'm fairly sure I'd need to modify the WebAccessNetwork access-list to permit WirelessLan to any against the port listings so thats not a problem I can change that
how I'm not entirely sure I to go about it with the NAT statements.
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Sep 3, 2009
Aspnix.com has offered Virtualization Technology on their dedicated servers - do you know what it means?
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Apr 27, 2009
tell me which web panel recommend for xen virtuo.?
i need frontend of panel.
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Mar 29, 2009
In another thread somebody had mentioned something about Citrix Xenserver utilizing shared iSCSI storage with multiple hardware nodes. I think this is a very intriguing concept, but is there anything open source or less expensive that you have used to accomplish similar resource virtualization?
Whether citrix or not, describe your setup!
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Mar 5, 2008
I have a machine with 2*Xeon 2.66, 16GB Ram, 146GB Raid 1, 292GB Raid 10.
This machine will be used to run Mysql (32bits or 64bits) and MDaemon (32bits only).
I have 2 options to choose and I'm not pretty sure which is better.
a) Win 2008 32bits Enterprize using PAE for ram support and running Mdaemon 32 and Mysql 32.
b) Win 2008 64bits standard having virtualized a win 2008 64 bits for Mysql 64 and a win 2008 32 bits for MDaemon 32.
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Sep 15, 2008
This is a little bit Offtopic here but maybe it's okay to ask my question.
For my GUI software development i need a virtual server solution. It must run WinXP, WinVista, LinuxI386, LinuxAMD64, FreeBSDI386, FreeBSDAMD64 and Solaris.
I'm currently running VMWare with all this systems. But their KVM tools are very instable - especially when waking up from hibernate etc. They eat the key/mouse focus and the only way to get any reaction is often a hard shutdown.
How good are the other Virtualization Kits? I heared that FreeBSD does not work on VirtualBox? I'm especially interested in Xen but i'm not sure if this is good for Desktop use. Seems that it is promoted almost exclusively as a server solution.
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Jun 26, 2008
We usually find some constrains using Apache/cpanel (1.3.41). Basically, we serve simple php codes and few images.
We usually setup our server to use lighttpd for static content and apache for dynamic content. Ok, due to some complex requirements on mod_rewrite we use that setup.
But frequently we see our apache reaches it limit and slow down with 0 idle servers. Specially as we have about 270 requests/per second on apache. Our load is low, barely passes 1,2 of load for small periods, our memory ok, our I/O is fine.
But we almost always reaches the 0 idle servers. Until now, our best config was:
Timeout between 60-120
KeepAlive Off
MaxKeepAliveRequests 1000
KeepAliveTimeout 15
MinSpareServers 50
MaxSpareServers 200
StartServers 50
MaxClients 256
MaxRequestsPerChild 80
As we clearly see that our server is under usage, I was wondering if it's a limitation on Apache or if I put virtualization on my server and run two apache webservers as cluster I would get better results.
So what do you think about guys? It's a matter of optimization (what could I do better for this httpd.conf setup?) ? Or cluster with virtualization would deliver what I'm looking for.
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Nov 24, 2008
What Virtualization Software Do You Like?
Please vote among Virtuozzo, Xen, OpenVZ.
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Apr 13, 2007
I have tried to search but couldn't find the information I was looking for. We are starting to offer VPS and considering MS Virtual Server and vmWare. vmWare seems rock solid and feature rich. Which virtualization technology you are using? Is vmWare a good platform for vps for hosting industry?
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May 4, 2009
I'm trying to establish a VPN server inside a Fedora 10 VPS under OpenVZ. Openswan or Poptop is preferred over OpenVPN because Windows has built-in support for these protocols.
It looks like the host node (it's actually the vps from myprohost.com) doesn't have the required kernel modules enabled(installed?). Take Poptop for example, if I run pppd after rpm installation, the output is like this:
[root@v ~]# /usr/sbin/pppd
/usr/sbin/pppd: This system lacks kernel support for PPP. This could be because
the PPP kernel module could not be loaded, or because PPP was not
included in the kernel configuration. If PPP was included as a
module, try `/sbin/modprobe -v ppp'. If that fails, check that
ppp.o exists in /lib/modules/`uname -r`/net.
See README.linux file in the ppp distribution for more details.
[root@v ~]# modprobe -v ppp
FATAL: Could not load /lib/modules/2.6.18-92.1.18.el5.028stab060.2/modules.dep: No such file or directory
And when I check for the availability of the encryption module "MPPE", I got the same result:
[root@v ~]# modprobe mppe
FATAL: Could not load /lib/modules/2.6.18-92.1.18.el5.028stab060.2/modules.dep: No such file or directory
Openswan complains about some missing kernel modules too. So what do I do? Do I tell the provider to enable these modules? Do they normally do that? Will the host node require a reboot after having done that?
What modules are required for Poptop and Openswan? And, do I need to tell them to re-enable these modules every time I rebuild my OS?
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Jun 3, 2008
I wanted to list down all files owned by 'root' inside /home directory and all users directory inside /home/users including subfolders and everything!
the command below works but only works when executed within the working directory.
ls -l | awk '{print $3" " $9}' | grep root
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Jun 4, 2008
I've got a dedicated server running my portal. Now we plan to soon launch broadcasting, where we via a webcam + microphone will broadcast (streaming WMV media) to all our members. Our members will then be able to interact with the speakers via chatting.
Now we are currently undergoing loadtesting, with our current setup, which is:
1. dedicated server+ultrafast connection=>chatting
2. home PC with static IP and 1 MBit upload=>Video+Audio Streaming
So the member requests a page from the dedicated server, which has a chat window and a windows media player. The player will retrieve the video/audio content from the home PC. This is done by the client.
Now is pretty logical to see that there will be limitations in how many connections the home pc will be able to handle.
The question is: How do i make the dedicated server get the content from the home pc (so it only serves one connection) and then get all the clients to get their video content from the dedicated server ?
I've looked into the proxy modules for the apache server, however they (forward/reverse proxy) both passes the connection on to the remote machine and thereby not doing what I want to do.
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Nov 3, 2009
Microsoft said this about Microsoft Licensing for Virtualization
Windows Server 2008 Datacenter
Run any number of software instances in physical and virtual operating system environments on a server.
Now,I have some questions:
1)Is this method of licensing just for hyper-v or we can use it on vmware ESXi or Xen?
2)How we can use Microsoft Volume Licensing on Vmware ESXi and Xen?
3)What is the best solution for windows virtualization?(vmware esxi or hyper-v or xen)
4)what is difference between xen and xenserver?
5)which control panels we can use for hyper-v,vmware ESXi and xenserver?
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May 23, 2008
Basically I need to virtualize a single new dell server. One virtual server needs to run windows 2003 server standard and Microsoft SQL 2005. The other virtual server will run CentOS Linux with a perl and PostgreSQL application.
The dell server is going to have two quad core xeon processors (8 cores total), 8gigs of ram, and two 15,000rpm SAS drives.
I came across Virutal Iron which is free for the single server instance and seems like it will do the job well. Has anybody used it? What is performance like? Seems to run a Java backend so wondering about the performance there.
Any other recommendations? I looked at VMware but the cost is so high, and probably more then I need, since I only need to virtualize a single server.
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Apr 14, 2007
what the hosts are using for xen virtualization. Para or Full virtualization and why?
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Oct 17, 2007
How will VMware ESX Servers handle a dos, ddos or syn attacks? Will it compleatly crash all VM running on the server just becouse one VM and its ip interface is attacked and make file systems monted on a san or nas to be corrupt becouse of the traffic on the local network will be downgraded becouse of all packets that passes to the VM:?
Does vmware have some protection tools for this kind o attacks or does this kind of virutalization only work in a an lan that is protected from Internet?
Will 2 dedicated nic solve this?
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Mar 6, 2008
i know xen is hardware based virtualization but is OpenVZ as well is the question
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Jan 12, 2007
I'm running a dedicated server and the main site on the server relies on Windows OS. The site is not fully utilizing the potential of the dedicated server, so I'd like to put some of my other sites on the same server and eliminate the other (shared) hosting I've been using.
Here's the catch... For the other sites, I'd like to run WHM/Cpanel which requires Linux.
If I understand correctly, this leaves me with having to decide on a virtualization solution, which I know nothing about. Some options I have been given are VMware, Virtuozzo, and Xen.
Would you suggest one of these or a different solution entirely?
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