OpenVZ is an open source virtualization 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 other virtualization technologies.

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Issue with kernel boot [OVH SERVER]

Trying to install OpenVZ kernel on Centos 6.3, Yes my kernel is installed i can see it in the /boot folder, yes it is Rhel6 and yes it is all up to date, i checked this with yum update. My issue ...
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2answers
5k views

How do I get my Proxmox VM to access the internet without a public IP address

I would like to create a proxmox vm and have that vm be able to ping/access external websites without having to assign a public ip to it. How do I do this? The VM is running centos 6
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1answer
285 views

Apache2 doesn't start automatically in an OpenVZ container using Debian 6

I have a OpenVZ container running Debian 6 on my server. After every restart of the container I have to manually start the Apache2 web server using its init script. In the error log I can't find any ...
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2answers
2k views

Screen - No more PTYs - Cannot start screen's on Debian VPS

I've gotten a newly imaged Debian 6 32 bit VPS. While configuring I tried to test screen as a number of my scripts run using it. Root has no problem running screen. But of course this is ...
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1answer
176 views

OpenVZ VMs redirect to main node?

I have a new fresh CentOs 6 machine and have SoulsVM and OpenVz installed on it. When I create VPS it came online with no problem. When I try to SSH to the VPS it gave me "Access Denied." I reset ...
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1answer
382 views

Virtualization on Atom D2700

Will paravirtualization work fine on Atom D2700 with 4 Gb RAM? Just several ubuntu/debian (maybe others) VM's with not heavy loads (LAMP for tests, torrent client, file server for PC and Mac etc.). ...
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1answer
350 views

How to mount together a filesystem tree for use in openvz?

I want my vm to use a filesystem tree consisting of multiple filesystem mounted together: mount <root-path> /var/lib/vz/private/<id>/ mount <home-path> ...
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1k views

How to kill an openvz container?

An openvz container can be stopped with vzctl stop <id> , but this needs the cooperation from the init inside the container. In case a container is compromised a way is needed to stop the ...
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2answers
712 views

yum update failed

I have problem doing a yum update on my OpenVZ VPS. I get this error message: (56/69): glibc-devel-2.5-81.el5_8.7.x86_64.rpm | 2.4 MB 00:00 (57/69): ...
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1answer
438 views

CentOS OpenVZ fail to boot after kernel update

After upgrading to latest OpenVZ kernel CentOS server won't boot. When i try go boot the latest kernel server is stuck at this point: (note that images are taken from virtual kvm) ...
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441 views

OpenVZ kernel panic

I recently installed OpenVZ on my VMWare box (To do some testing) and I get the following: https://www.dropbox.com/s/p38btkv5j84bvsh/Capture.JPG the GRUB config is as follows: # grub.conf generated ...
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1answer
243 views

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. ...
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1answer
476 views

PTY allocation request failed on channel 0 - gentoo in openvz

I keep getting PTY allocation request failed on channel 0 once I hit "some" limit, upon trying to connect with ssh or locally with vzctl enter 10x I have multiple developers accessing same test ...
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0answers
461 views

Replacing TightVNC with alternate client (CONNECT parameter)

I am in the process of reverse engineering an existing system in an attempt to replace their existing TightVNC applet with something else (hopefully NoVNC if at all possible). So far, here is what I ...
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2answers
986 views

How do I rebuild a VM using Proxmox control panel?

I'm using Proxmox Virtual Enviroment (v 2.1) to manage my openvz virtual machines. Sometimes I want to rebuild a virtual machine with other openvz container template, but I couldn't find any tools in ...
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1answer
326 views

Using virsh to control KVM and openvz

On different servers I'm using virsh to manage openvz containers or KVM guests. No I have a server with both, KVM and openvz installed and would like to controll both with virsh. I can't figure out ...
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1answer
96 views

Installing OpenVZ inside debian 6.0?

I have a little problem. Basically I have dealt with a VPS for quite a while and decided to make the jump to a more powerful dedicated machine, and then split that into various VPS' for different ...
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431 views

OpenVZ High container load average, < 1 host load

This is something that has been confusing me for a while and I honestly can't figure out what is going on. I run several OpenVZ host servers for my own personal use and there is this one particular ...
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1answer
1k views

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 ...
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1answer
333 views

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 ...
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173 views

Is there any advantage of using OpenVZ on a dedicated server for single-use?

We are leasing a dedicated server where we plan to host an XMPP server. Currently, Debian is installed. Our current requirement is this will only be the production box; however, this could change if ...
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1answer
2k views

Is LXC secure enough for VPS hosting?

Right now I'm using Linux VServer for VPS hosting. But it's lacking some functionality I need (ex. cpu usage virtualization, quota support for guests, etc.) so I'm thinking about switching to OpenVZ ...
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1answer
523 views

OpenVZ tells me: hostname: the specified hostname is invalid on boot of the VE

I’m using Proxmox 2.1, which is based on Debian 6, for my OpenVZ installation. Which shouldn’t matter but I wanted to mention it before I begin with my problem. I imported several VEs into my newly ...
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1answer
52 views

Is there any way to know when resources in user_beancounters hit barrier

When I look at /proc/user_beancounters there is some failcnt on kmemsize and tcpsndbbuf. Is there anyway to know when they got incremented? Do we always need to track the count and display in graph or ...
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3answers
855 views

size lvm snapshot

I'm configuring an openvz node and would like to use lvm snapshot for backup (I do remote backup too). The snapshot size is the same that data in the backuped partition ? If I have a logical volume ...
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1answer
3k views

Mount Windows share via CIFS in CentOS not working (but smbclient does)

I'm a bit frustrated...I'm trying to mount a windows share via CIFS in CentOS 6.3, but it's not working: mount -v -t cifs -o credentials=/data/conf/credentials/fileserver //10.0.1.200/projects ...
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3answers
2k views

Karmic iptables missing kernel moduyles on OpenVZ container

After an unsuccessful p2v migration of my Ubuntu server to an OpenVZ container which I am stack with I thought I would give a try to a reinstall based on a clean OpenVZ template for Ubuntu 9.10 (from ...
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2answers
947 views

Why is my cron daemon is being killed every few minutes?

As of about a week ago, my cron daemon refuses to stay running. I'm using Debian 6 x64 on an OpenVZ virtual machine. Running something like pgrep cron shows that the daemon isn't running. I start the ...
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580 views

Bringing an IPsec tunnel on the hardware node to the OpenVZ containers

I have a server hosting OpenVZ containers. An IPsec tunnel is configured on the hardware node (HN) and I'd like to make the remote network available in the containers (CT). How can I do this? The ...
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2answers
1k views

How to configure `lxc` like `openvz`

I was going to fire up a OpenVZ node to test out some software, but it looks like OpenVZ is no longer supported in Ubuntu (deprecated in favor of lxc. It looks like can do more than simply ...
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1answer
2k views

Software Interrupts CPU time is high and keeps growing

My system is a Debian 6.0.3 x86_64 box w/kernel 2.6.32-5-openvz-amd64, it hosts a number of OpenVZ containers. I have recently migrated from LXC/newer kernel from backports repo to the stable OpenVZ ...
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3answers
1k views

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 ...
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1answer
2k views

How to find the real memory usage in openvz?

I heard that in OpenVZ, free -m doesn't give the correct results. So, how to get it? Here's the result of my cat /proc/user_beancounters"... How much ram am I using? What value to check? Version: ...
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2answers
2k views

How can I test hd performance on an OpenVZ container?

CentOS 5.x | VPS | OpenVZ I'm trying out a vps that uses OpenVZ and am not sure what command to type to measure disk read performance. I thought hdparm would work but I get the following: ...
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288 views

VPS extremely slow at compression [closed]

I have a VPS on Open-VZ, and the server is supposed to have 4 cores 3.0Ghz Xeon CPU. The usage is normally close to zero. When I compress a file (using zip, tar.gz, or 7z) it take too long for such ...
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2answers
2k views

How do I enable swap file on my server?

I've followed this but when I run:- #swapon /swapfile1 I get::- swapon: /swapfile1: swapon failed: Operation not permitted The system is extremely slow with 1GB of RAM trying to run ...
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1answer
539 views

How to see what is causing failcnt on tcpsndbuf

I am seeing a failcnt on my tcpsndbuf by looking at the user beancounters. How am I able to see what is causing this failcnt? I am experiencing problems with my server and I think that it is as a ...
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1answer
307 views

Running OpenVZ virtual servers within a Xen XCP vritual server? Bad practice?

I have a 1 server with 8GB RAM and 2xQuadcore Processors. It currently has the Xen XCP installed on it, and centos6.2 x64 running on a virtual machine. I have a server control panel software that I ...
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2answers
341 views

Server mysteriously rebooting

I have a VPS that almost daily performs a reboot. I finally managed today to get a clue from my logs May 12 03:14:49 sshd[19379]: Did not receive identification string from 173.212.118.167 May 12 ...
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1answer
455 views

Moving from shared cpanel hosting to non cpanel VPS - What should I know?

I'm currently looking into migrating a few sites from my shared cpanel hosting to a VPS. Got to the point where I want to do more and have been learning about some system admin stuff through my ...
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1answer
130 views

VPS Node and top -c

When using and viewing top -c with openvz does the CPU usage and everything include usage for everyone else on the system or just you? I've been watching my VPS node for awhile now and I've seen ...
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1answer
377 views

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 ...
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8answers
2k views

Which virtualization platforms should I choose, Xen or OpenVZ? [closed]

I am upgrading my shared hosting to VPS hosting, mainly to just add server administration skills to my development skills, so I'm facing a lot of new choices just signing up. I need to choose a ...
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1answer
172 views

Is there a way to run OpenVZ on a filesystem that doesn't need to fsck?

I'm running OpenVZ, and occasionally need to power cycle my host. Of course, it has to fsck every time it comes back up (ext4) Is there a way to run OpenVZ on a filesystem that doesn't have to fsck in ...
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159 views

Performing yum update on an OpenVZ host

My company runs a handful of OpenVZ servers (HN) and hosts all the server as containers on these HNs. We have done some pentest and found out we have to do update the kernel on the HNs to resolve a ...
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1answer
777 views

OpenVZ + CentOS 6.0 + Home Network [closed]

Setup a centos 6 server at home and installed openvz kernel and all working fine. My only issue is routing IPs to the containers (typing the different IPs in from another PC showed my default web ...
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4answers
659 views

Private Cloud: Debian and OSS vs vmware vSphere, which is best for corporate use? [closed]

I'm hoping someone can shed some light regarding the current state of virtualization on Debian. Since I like my information first-hand, i thought I'd ask here for some real-world use cases. I am ...
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1answer
1k views

OpenVZ container can't reach the internet

I installed OpenVZ on my Debian 6 server which has only 1 IP. So I tried to follow this guide on the OpenVZ wiki, but alas only with partial luck. I succesfully forwarded port 8090 of the Host server ...
3
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1answer
2k views

permission denied for chmod as root

I need to manage a customer's openvz guest (latest debian squeeze 64 bit). Now when I try to do a chmod 0750 /root as root it gives me Permission denied. This really puzzles me, as I thought root can ...
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1answer
367 views

Openvz VE issues after upgrade

i'm running openvz on ubtunu Lucid (kernel 2.6.32.28-openvz-pae). the templates i used are ubuntu 10.04 ones. i tried to upgarde one of my two VEs from 10.04 to 10.10. The process was broken (the ...