Sizing OpenVZ And Virtuozzo For Linux Physical Servers - Guidelines?
Sep 24, 2007
Greetings:
Are there any calculators, white papers, or other guidelines that provide guidance for sizing a physical server to be used for openvz or Virtuozzo for Linux?
i.e. if you want to run “x” VPS nodes totaling “y” disk space needing “z” number of processes, etc. you will need “n” CPU’s of at least ____ Ghz with ____ RAM, and ____ hard drive space of which ________ should be reserved for the operating system and openvz system software
Also for openvz or Virtuozzo for Linux, which RAID provides the fastest performance without trading off too much for hard drive reliability?
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May 12, 2009
Does anyone know if running centOS 5.2 as a host OS on a dedicated server would be able to run both Linux and Windows VPS servers using virtuozzo? on their video it says you can however i cant find where/how to install a windows server 2003 template.
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Oct 28, 2008
Which one do you prefer more and why?
Virtuozzo is very expensive while OpenVZ is free and it is somehow another Virtuozzo, but made simpler?
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Apr 2, 2009
As a provider of Virtual Private Servers im looking at ways to expand our business, I love the fact that we can offer our clients such a good service with the low price we presently charge but as a "Client" or "Potential Client" what would your views be on Virtuozzo?
Is it worth our business cutting our already low profits and going with Virtuozzo as our VPS Control Panel?
This is something we are very interested in doing and we feel it would be a big jump from the very low-end budget HyperVM/OpenVZ Approach.
Your Views on the Virtuozzo Vs HvM/OvZ would be very helpfull.
Would you rather buy a low priced Virtozzo VPS or an even lower priced HyperVM powered VPS? Im quite lost as to wether the financial investment would be worth it, I don't see how it wouldnt be as HyperVM is very buggy and really doesnt give a full sense of security in my personal opinion.
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Jun 18, 2007
This poll is purely for market research but I figure other VPS providers might get some info out of it. Its a simple question to customers more than hosts.
Do you prefer OpenVZ,Virtuozzo or Xen and why?
I personally know which I preferr from a providers point of view but wondered about clients
Assume hardware is equal. OpenVZ/Xen have a custom control panel (HyperVM or similar). Virtuozzo has VZPP
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Apr 5, 2009
What software do you recommend me for creating vps?
openVZ
Xen
VMWare ESX
Virtuozzo
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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 10, 2008
Its becoming more and more difficult to manage VPS using HyperVM and I am personally sick of the control panel design.
So does anyone have any great ideas to move all the VPS in HyperVM (OVZ) to Virtuozzo (PIM)?
If there isn't, I think I'll have to move all data across the orthodox way - which I clearly want to avoid.
PS: OVZ is on a different node from the VZ (duh!) but also will be utilizing different IP ranges. So, I think I need advice on changing IPs of the VEs too.
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Apr 26, 2008
I am looking for a bit of perspective from current VPS hosts.
Which do you prefer Virtuozzo or OpenVZ?
What are the pros/cons?
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Apr 4, 2009
I just ordered a server from serverbeach that should have come with 2 GB but I see that this one comes with 8 GB
Unfortunately, I seem to be missing 7 GB of ram.
Installed Physical Memory: 8 GB
Total Physical Memory: 1 GB
Windows 2008 Server Web 32-bit
Now, being a 32-bit system, I should see 3-4 GB of ram right?
Any idea why only 1 GB is available for the OS?
[url]
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Sep 14, 2009
What percentage of shared hosting customers use SSL and require their own IPs? I need to estimate the subnet size for a shared server.
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Dec 10, 2008
[openvz ]How to make for kernel of openvz to recognize 4GB of ram?
How to make for kernel of openvz to recognize 4GB of ram?
# uname -a
Linux xxxxxxxxxxx 2.6.18-92.1.13.el5.028stab059.3 #1 SMP Wed Oct 15 17:48:55 MSD 2008 i686 i686 i386 GNU/Linux
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Aug 22, 2007
I could not successfully upgrade glib-it's in use.
Sendmail was active..and using the library..and preventing me from upgrading.
Sadly...this simply may not be possible on my remote vps.
Does bash and ssh use glib? If could shut down everything that was using it..I have a chance at pulling this off.
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Jun 7, 2008
I have a VPS and it worked well, the problem is if I install huge database which is more than 2 gigs, the VPS will hang because it has no physical ram to handle it. My host told me the only way is to get a dedicated server for a db more than 2 gigs. Dedicated servers have physical ram to deal with such db's.
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Nov 1, 2008
I had a 'VPSII' at 1and1 (Windows). The VPS II is advertised as having 256MB, and in Task Manager it would show physical memory as 450MB. When I first questioned this difference I was told the 450 included an 'allowance' for the OS - seemed reasonable.
I just upgraded to a VPSIII - which is advertised as having 512MB. Call me crazy, but I was expecting Task Manager to now report 706MB (450+256), but it only shows 550MB.
I called 1and1 and they said 'that's correct' - we give the smaller VPSs a 'boost' but not the VPSIII - WTF?
Is this anything like standard practice?
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Jan 13, 2007
how can i find out my site physical path
i tried following but blank page
[url]
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May 14, 2009
recently brought a dedicated server with fasthosts.
Currently my site has
Physical80.31% 84Mb Free (428Mb Total)
Virtual2.99% 1987Mb Free (2048Mb Total)
The physical memory has shot up, do I need to reduce it somehow?
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Sep 6, 2009
I live near NYC, and it would be very convenient if I could have physical access to my colo'd server. I don't suppose there is anything in the $50/month range? If not, then I guess any affordable colocation on the East Coast?
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Nov 1, 2009
I have number of question relevant to dedi. severs. I dont know to post them seperately or in single thread , sorry to mod for my negligence.
raid 1
or
If I have two drives ,and take daily backup on second drive
how much average small websites can hold a single machine=
quad xeon 2.3 , 4gb ram, 1 tb drive what you say?
how many websites you ever hosted on single machine?
is it wise to host large number of website on single powerful machine with external backup, or go for number of small dedis.
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Jan 30, 2008
Is there any economical motherboard CPU which support 4 physical CPU?
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Dec 9, 2007
Physical hack of my server?
My server (cent OS4, plesk 8) was frozen for a day and the NOC had to reboot it, here is the mail I got from my host:
>Your server was frozen, with a kernel panic. Ensure that you check your logs closely to determine how this happened,
After looking at the message log here is the part of the log when the crash happened:
Is this really a kernel panic, I am not sure...
Dec 8 09:05:36 server kernel: input: AT Translated Set 2 keyboard on isa0060/serio0
Dec 8 09:05:37 server hal.hotplug[2701]: DEVPATH is not set
Dec 8 09:05:37 server hal.hotplug[2702]: DEVPATH is not set
Dec 8 09:05:42 server login(pam_unix)[2670]: bad username [ ]
Dec 8 09:05:42 server login[2670]: Authentication started for user
Dec 8 09:05:44 server login[2670]: FAILED LOGIN 1 FROM (null) FOR , Authentication failure
Dec 8 09:05:50 server login(pam_unix)[2670]: authentication failure; logname=LOGIN uid=0 euid=0 tty=tty1 ruser= rhost= user=root
Dec 8 09:05:50 server login[2670]: Authentication started for user root
Dec 8 09:05:53 server login[2670]: FAILED LOGIN 2 FROM (null) FOR root, Authentication failure
Dec 8 09:05:57 server login(pam_unix)[2671]: authentication failure; logname=LOGIN uid=0 euid=0 tty=tty2 ruser= rhost= user=root
Dec 8 09:05:57 server login[2671]: Authentication started for user root
Dec 8 09:05:59 server login[2671]: FAILED LOGIN 1 FROM (null) FOR root, Authentication failure
Dec 8 09:06:00 server shutdown: shutting down for system reboot
Dec 8 09:06:00 server init: Switching to runlevel: 6
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
Dec 9 05:52:36 server syslogd 1.4.1: restart.
It looks to me like if someone has physically connected a keyboard and logged in at the NOC.
I use Iptable to restrict ssh access to my IP each time I connect remotly, so I dont' think a remote connection has been possible.
any idea about this line:
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
I think it's just corupted data the was written when the server shutt down.
Also i didn't find any other signes of kernel panic in the logs
Looking at the httpd error log I found this lines before the crash:
[Sat Dec 08 00:44:40 2007] [error] [client 213.215.41.138] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind
[Sat Dec 08 00:44:40 2007] [error] [client 213.215.41.138] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind
apparently somone doing server scan. maybe the 2 events are correlated and the server freeze could have been a result of some buffer overflow attack, but i sould be finding some evidences of this on the apache logs?
What direction should I take to investigate a bit further on this server freeze?
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Jan 14, 2007
what is the physical path of yahoo hosting
i tried this
PHP Code:
<?echo $_SERVER['PATH_TRANSLATED'];?>
but bank page
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Jun 2, 2008
We have a windows 2003 machine that is currently responding properly to all services that it's running (including IIS and FTP), however RDP connections just close right away and the server isn't responding when a local keyboard & monitor is plugged in.
The last thing that I want to do is pull the power out while it's on - any ideas?
I tried a remote shutdown, but the response is:
C:Users>shutdown /r /m HOSTNAME
HOSTNAME: The entered computer name is not valid or remote shutdown is not supported on the target computer. Check the name and then try again or contact your system administrator.(53)
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Jun 8, 2007
I just built a new server using [url]and two Intel xeon 5345 clovertown processors.
When the server boots up the BIOS detects only 1 physical processor with 4 cores and also the OS detects the same.
Couple of things I already tried to solve the problem:
A. Upgraded the BIOS to the latest available release date of 05/30/07
B. I swapped the processors in the motherboard sockets to rule out that one of the processors was not working.
how to troubleshoot.
_______________________________________
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Mar 22, 2007
I have a Windows 2003 server with 2GB ram running IIS and SQL 2005 express. I noticed that the server only uses around 1.2GB of its physical memory (been a few days) while page file usage seems high at 1.1GB.
SQL server has been allocated a maximum 1GB of memory while IIS has no limitations on memory usage.
Server doesn't really show any slowness at this point (not a lot of traffic). But to my understanding other than the proccesses that always use some virtual memory (around 400mb usually), page file should be only used when there is insufficient physical memory? So is there something wrong with my memory usage, 1.1GB on page file while there are still almost 50% available physical ram?
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Jun 12, 2007
I have been a user of sitepoint for quite a while now. I am developing software applications at present and keep bumping my head into the same old question.
Which is better, Linux or Windows servers. (Probably a question which depends on what they are used for of course.) In this case, they would be used to store a database for the application and therefore communicate with it etc.
The choice is, do I develop the application in .net and use windows or do I go down the PHP route and use Linux.
This is the options that have been explained to me, of course I am not a developer myself so am just hearing the advice I am told.
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Jul 31, 2014
I'have a problem with my aps setup on sanbox.When i create on customer ccp when i click finish i have this error. I must only test.
Error: Instance of application with id 124 and version '1-4' can not be provided: There is no resource of class 'Shared hosting Apache' with provisioning attributes 'Web Cluster' in subscription with id 1.:There is no resource of class 'Physical hosting (IIS)' with provisioning attributes 'Web Cluster' in subscription with id 1..If i add the shared hosting apache resourse i get this error : There are no "apache" services that satisfy given attributes: "Web Cluster".
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Aug 2, 2008
This question, and many questions relating to this I am sure must have reasoning behind it. It basicly relates down to the following;
Why do game servers use up more CPU on Linux, opposed to Windows?
Some people say it doesnt, and that is true for some games, but most games I have found, the CPU usage of the game on a Linux based server is far higher.
Just as an example, most Steam games.
I really would like to know why, and how it could be reduced. What are some things I can install, or configure to make game servers run more smoothly or use less CPU on Linux?
If anyone has any ideas & thoughts related to this, please let me/us know, for im sure this is beneficial to all.
Just to add in, I use CentOS 4.6 Final.
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Jun 8, 2009
I received this from ResellerClub earlier...
Dear Reseller,
We were reported of several websites hosted on our Linux Servers showing virus alerts. Our investigations have revealed that these alerts are due to an injection attack on packages hosted on our servers. The FTP logs of the infected packages indicate that the machines of the customers who own those domains are compromised and have been used to upload malicious content to their respective hosting packages.
What is a Gumblar Attack?
Gumblar appears to be a combination of exploit scripts and malware. The scripts are embedded in .html, .js and .php files using obfuscated Javascript. They load malware content from third party sites without the user's knowledge. It also steals FTP credentials from the victim's computer, which allows it to spread and infect additional sites. Therefore, when someone visits an infected site they get infected and if they have FTP credentials for a website on their machine then those sites will get infected too. This explains the exponential growth of the exploit in such a short space of time.
What makes it different from previous malware exploits?
There are a number of aspects to this exploit that both make it difficult to remove and help it spread. Firstly, it is infecting users who are browsing legitimate websites, if these users are webmasters then it is infecting their websites by using their FTP credentials to inject the script onto their site. The obfuscated malicious code is dynamically generated. This makes it difficult to detect and difficult to automatically remove. Not only does the script vary from site to site but it can also vary from page to page on the one site.
Further Read:
- http://tinyurl.com/m23ncu
- http://news.cnet.com/8301-1009_3-10244529-83.html
What have we done?
As a precautionary measure, we have temporarily blocked FTP services on our Linux Hosting Servers. This will prevent infection of any other hosting packages. We are in the process of removing malicious content from every package that was infected as a result of this. However if we re-establish FTP connections your clients will re-infect their respective hosting packages since their machines are likely compromised.
What we are doing?
We will be shifting to a secure FTP connection and resetting everyone's FTP passwords across all Linux Hosting packages. You can later on modify these passwords from your website management panel. You should ideally warn your customers about this worm and ask them to scan their machines given its exponential spread so far.
Regards,
ResellerClub Support Desk
Your thoughts on this? Time to move away?!
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