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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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Virtual environment firewall with CSF + iptables rules on VM?

We are getting into virtualization with a Proxmox VE (OpenVZ + KVM) server. Our plan for firewall is to have CSF (http://configserver.com/cp/csf.html) running on the host machine as we've had a reasonable good experience with it in the past. Apart…
luison
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OpenVZ container as gateway performance issue?

I am running a lot of openvz container in server. Now I have a lot of performance issue, and I think they come from I/O since munin graph show a lot of I/O activiy. Server is proxmox, and it was recently upgraded (this could be the problem also) But…
llazzaro
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Run OVZT on VirtualBox

I need to reproduce an issue using this image: https://src.openvz.org/projects/OVZT/repos/ubuntu-22.04-x86_64-ez/browse Is it possible to run this image locally on VirtualBox?
Peter Penzov
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No such file or directory: '/lib/modules/5.2.0/modules.builtin'

I'm trying to install Kubernetes cluster using Kubespray. I get this error during script run time: An exception occurred during task execution. To see the full traceback, use -vvv. The error was: FileNotFoundError: [Errno 2] No such file or…
Peter Penzov
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Running firewalld on fresh AlmaLinux 9 CHAIN_USER_DEL CHAIN_ADD failed

Trying to run firewalld on a fresh AlmaLinux 9 VPS (OpenVZ). Only did the ff. so far: dnf upgrade systemctl start firewalld systemctl enable firewalld systemctl status firewalld I am immediately greeted with these errors: Oct 26 06:58:14 myserver…
IMB
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OpenVZ 7 memory leak

Looking for some assistance on a memory leak issue wherein the RAM consumption keeps gradually increasing day by day and within a span of 6 to 7 days, it reaches 100%. (I have to reboot then). Ram consumption graph The RAM drop is due to reboot.…
pulkit8
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How to build kernel with OpenVZ support

Is it possible to compile 5.x kernel with OpenVZ? There is a full-blown custom OS built on top of RHEL6 called Virtuozzo 7.0, but it uses only 3.10 kernel. I would like to build any newer kernel, preferably 5.x, or at least one they developed at…
Possible
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Cannot yum install vdo kmod-kvdo

I am trying to install kmod-kvdo and vdo but I get these errors. yum install vdo Loaded plugins: fastestmirror, langpacks, openvz, priorities Loading mirror speeds from cached hostfile epel/x86_64/metalink | 4.5…
Mehdi Azizi
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SOLVED - Network broken after yum update (using OpenVZ 7 / Fedora / CentOS 8)

I have just installed OpenVZ 7 from the official ISO image. The installation went well, and everything basically working. I can ssh into the hw node without issue. However, after doing a yum update, the network seems to be locked down and I cannot…
sodanotpop
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install and config openVZ

I want to install OpenVZ on my server(fedora10), and then assign a block of ips to each of the vps. I have a moderate amount of linux knowlege, how much effort is involved to setup what I just described and maintain it? all suggestions are…
user12145
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NVMe-Dedicated Server without Virtualisation: Big speed benefit?

I am currently using a VPS which is virtualised with Virtuozzo and sometimes my blog is starting to deliver in 150ms till 350ms (server response). I assume that the virtualisation is the bottle neck because as I read Virtuozzo does have only one…
frankhammer
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How to find the missing inodes?

df -i reports Filesystem Inodes IUsed IFree IUse% Mounted on /dev/simfs 300000 250697 49303 84% / so around 250K inodes in use. du -shx --inodes / reports 70K to be sure no inodes was hidden behind mounts, i tested mkdir /mnt/test/ mount…
Puggan Se
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IP from multi gateway, openvz debian

I have a problem with network in my dedicated server. I have a host: ip 188.60.240.71 netmask 255.255.255.128 gateway 188.60.240.1 broadcast 188.60.240.127 network 188.60.240.0 I order additional ipv4 to config openvz virtual machine. I get 5 ip…
Kamil Zamerski
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How do hosting providers give each container a unique public IP?

I'm looking in to starting my own hosting company; even if I'm only paid in experience. At first, I thought I'd create shell scripts to automate the creation of OpenVZ containers. But then I realized I'd also need custom IpTables rules set for each…
theCowardlyFrench
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need to load xt_tcpudp module in Debian 7 Wheezy with OpenVZ kernel. Error: 'could not open'

I followed this guide IPTABLES inside container guide @ openvz.org I'm running Debian 7 Wheezy x64 which was dist-updgrade'd before installing OpenVZ. The container is Debian7 x64 minimal. It's working really well except now I need to have some…
user1862165
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