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Questions tagged [openvz]

OpenVZ is an open source containerisation technology for Linux which utilities containers to run separate Linux based operating systems on a single machine. OpenVZ is typically used as it touts a low overhead, of around 1-3% of CPU, compared to virtualization technologies.

OpenVZ is an open source operating system-level containerisation which integrates with the Linux Kernel. Because of this OpenVZ can only run on Linux and can only run Linux containers which have compatible kernels. OpenVZ separates out virtual environments into "containers", which are similar to BSD Jails.

OpenVZ is not like traditional hyper-visor based virtualization technologies, such as Xen or VMware, in that is only runs a single patched Linux Kernel. This however lets OpenVZ be faster and more efficient than hyper-visor based technologies. Typically each OpenVZ container will have around 1-3% overhead of that if it were a physical machine.

OpenVZ is the basis of Virtuozzo Containers, which is commercial software distributed by Parallels Inc. OpenVZ is available under the GNU GPL v2 license.

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How to run fsck on a simfs filesystem under openvz

How do you do a fsck on a simfs filesystem under OpenVZ? You're supposed to not run fsck on a mounted FS. Can you just fsck the image (/vz/private/100 or whatever it's called)? Sorry I can't tag simfs.
Dokbua
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No SSH password prompt

I'm trying to reach Centos based VPS in OpenVZ. User prompt goes well, but after I type username, press Enter no password prompt occurs and server drops connection by timeout in a few seconds. Tried different ssh clients (Windows based). And NO log…
webbandit
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Is there a way to disable burstable RAM within OpenVZ?

I've had a few pretty idle VPS under OpenVZ, and while I generally don't reach the guaranteed RAM, it bothers me that my VPS "thinks" it has more RAM than it actually does. After all, exceeding the guaranteed RAM can result in killed processes,…
sadpluto
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I want to run MongoDB on OpenVZ, but crashes expected — what can I do about it?

My Server is hosted on HostEurope, a virtual server uname -a prompts Linux lvps176-28-21-237.dedicated.hosteurope.de 2.6.18-028stab095.1 #1 SMP Mon Oct 24 20:15:15 MSD 2011 x86_64 GNU/Linux They are running OpenVZ. According to the support of…
Mario Bertschler
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Anyone using Archipel in production for managing virtual machines?

I am getting ready to deploy a new server for my company. We intend to use virtualization mainly for security but also to help with versioning and other issues. We have decided to use openvz. Now I am trying to pick out some management software…
Jacob Stoner
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NFS4 client within OpenVZ container running Ubuntu 11.10?

I have an Ubuntu 11.10 VPS running inside OPenVZ with a hosting company. I'm trying to get it to mount a remote NFS server using NFS4, but can only get it working using version 3. I've been Googling around this quite a lot and occasionally I'll read…
Mark G
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What could I or my VPS provider be doing wrong? (TUN/TAP on OpenVZ)

I'm trying to setup OpenVPN on a CentOS VPS (OpenVZ). But the problem I am having has to do with enabling the TUN/TAP interface. When I purchased the VPS service, I left a note to have the TUN/TAP device enabled. But it seems it wasn't enabled when…
David Kornacki
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upgrading kernel from 2.6.27 to 2.6.32

I have an openvz server, currently running on linux-2.6.27-openvz-kiprensky.1-r1 Now, I'm upgrading server and part of the upgrade is kernel upgrade. Now, I'm offered linux-2.6.32-openvz-feoktistov.1 Question, if I'm recompiling the kernel, can I…
jancha
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Open VZ firewall solutions

I've got VPS running on an Open VZ virtualisation instance. Unfortunately I'm having a lot of trouble getting a firewall up and running. I've tried my usual UFW and shorewall, but neither of them would start up. The company that runs the vps…
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openVZ VPS spam

i have an openvz vps,, and i use to run only openvpn server.. but one day, my datacenter told me they suspended my vps because it was sending spam? well im not using smtp or stuff on my vps, its just plain VPN server.. now can u provide me ways on…
Lufthansa
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Moving OpenVZ /vz partition to separate drive

I've got an OpenVZ box that's running out of hard drive space. It has a single drive that contains the system and vz partitions. I'd like to install a new drive and move the vz partition to it. This seems fairly straight-forward, but I wasn't able…
Ian Dunn
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VE not stopable

One of my VEs sometimes stops working. I cannot reach it via HTTP, FTP or SSH, I only can enter it per vzctl enter X All tries to restart the VE result in a 'Operation timed out', even if I try 'vzctl stop X --fast'. I cannot restart /etc/init.d/vz…
Quest
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Best way to benchmark linux virtualization solutions

I'd like to run some benchmarks on linux virtualization solutions (namely Xen, KVM and OpenVZ) and I'm currently thinking about how to set up the test environment. My current approach would be the following: Set up a bare server system Install all…
maff
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OpenVZ vs KVM for Linux VMs

Hardware: Intel® Core™ i7-920, 12 GB DDR3 RAM, 2 x 1500 GB SATA-II HDD (no SoftRaid because Proxmox developers don't support softraid and they are sure you'll run into problems) Software: Proxmox VE with KVM and OpenVZ support and debian…
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Assign /112 IPv6 range to OpenVZ VPS

I have a /48 IPv6 and would like to chop these up into /112's that I can assign to my VPSes. I know how to assign them manually, e.g. vzctl set 1 --ipadd ipv6IP --save But how could I assign, for example, a full /112 at once?
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