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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145 views

OpenVZ exec and unable to re-open stdin / Unable to lock the administration directory

I run the following command across all OpenVZ containers to update/upgrade: vzctl exec2 $VM "apt-get update & apt-get upgrade" In all cases, I get the following error: dpkg-preconfigure: ...
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1answer
863 views

Identifying performance bottleneck on a high-end VPS (Apache 2.4 event_mpm/lighttpd/nginx)

I have quite a high-end VPS from vpsblast (their SSD13) - 4 cores, 16gb RAM, 320gb of SSD hard drive space on a 1GigE Internet backbone (virtually uncontested). As near as I can tell it is running ...
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1answer
173 views

OpenVZ with VSwap causes php-fpm/mySQL errors on nginx

I'm running into a rather nasty issue, and hope that anyone here can help me with a possible solution as I'm pretty much brickwalling right now. The situation: I have an OpenVZ VPS that is ...
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1answer
191 views

OpenVZ - vzdev kernel module issue

I am setting up a Centos 6.3 minimal server with openvz that replicates to another machine using DRBD. I want all openvz data/files to be kept in a single /vz directory which is an LVM that I am ...
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0answers
142 views

Can't lock vz with proxmox

I would like to backup my virtual servers to move them away. And when i have started the backup process then i only see this every time: Feb 09 08:40:34 INFO: Starting Backup of VM 101 (openvz) Feb ...
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1answer
484 views

Centos 6.3 DRBD / OpenVZ kernel/userland issue

When I start my Centos 6.3 server's drbd service I get the following error: Starting DRBD resources: DRBD module version: 8.3.13 userland version: 8.4.2 preferably kernel and userland versions ...
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1answer
440 views

Setting up bridging for Qemu and routing for OpenVZ (venet) with multiple subnets on Debian Linux

So i've been searching the past couple days trying to figure out the best way to achieve this but still can't get it figured out. I have a debian server setup running Proxmox to host OpenVZ and Qemu ...
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1answer
239 views

Proxmox server with just one public IP

Is it possible to host a proxmox server with openvz containers NATed to the public IP which hosts the Proxmox server ? I have gone through the proxmox feature list but I am somehow puzzled by the ...
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1answer
299 views

GRUB can't configure on upgraded Ubuntu OpenVZ VPS

I upgraded an OpenVZ VPS from an older Ubuntu release to 12.04LTS using the do-release-upgrade command. Ever since, all of my apt-get runs look something like this: $ sudo apt-get upgrade Reading ...
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1answer
147 views

openvz dual nic setup from scratch

I have a openvz server that has 2 nics I need 1 for ethernet and the other explisitly for nfs traffic. eth0 goes to the lan/internet currently doesnt have ipv6 but will be getting a static ip soon. ...
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0answers
602 views

Enabling IPv6 with OpenVZ using Proxmox 2.2

I'm trying to enable IPv6 on my Debian nodes (OpenVZ) using venet; my host is under Proxmox 2.2 (kernel 2.6.32-16-pve), and it seems the routing fails. My host correctly pings all my nodes; all my ...
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2answers
303 views

Tuning OpenVZ Containers to work better with Java?

I have a 8 GB RAM Server (Dedicated) and currently have KVM Virtual Machines running on there (successfully) however i'm considering moving to OpenVZ as KVM seems a bit overkill with a lot of overhead ...
3
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1answer
125 views

OpenVZ has vzctl exec, what is the equivelent for lxc

I'm switching from OpenVZ to lxc. The one thing that is really bugging me is that I can't find a lxc alternative to vzctl exec. Before on OpenVZ I could do vzctl exec 1033 restart nginx. Now, all I ...
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1answer
1k views

How to create a LXC container on LVM from an OpenVZ template?

I have a lot of experience using OpenVZ, but I want to give LXC a try on a server where perfect isolation is not a concern. The main reason for the switch is preferring Ubuntu Server LTS as the base ...
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1answer
535 views

CentOS 6 and Sun/Oracle Java Issue [duplicate]

Possible Duplicate: Linux out of memory on VPS I have a OpenVZ VPS running CentOS 6.3 64 bit and when I try to install JRE 7 64bit using the command: rpm -Uvh java.rpm It gives me this ...
2
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1answer
560 views

PPTP installation on CentOS 5 not working (Kernel support for PPP?)

I am trying to get PPTP installation up and running on my VPS. I have followed various guides, however, I am unable to connect to the VPN once it’s setup. I checked my VPS’ /var/log/messages and I ...
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2answers
855 views

how to drop_caches in OpenVZ centos6 container

I have tried sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches' sudo echo 3 > /proc/sys/vm/drop_caches echo 3 > /proc/sys/vm/drop_caches echo 3 | sudo tee /proc/sys/vm/drop_caches and a ...
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1answer
63 views

How do I skip the installation of grub in my VPS?

I am upgrading Ubuntu 11.04 to Ubuntu 11.10 and it asks me to install grub, I do not want to do so as I am in a VPS, how can I skip installation of grub ? If I close the session, then it shows ...
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1answer
1k views

Loading Raid drivers during Proxmox VE installation

I'm using Hardware raid on my Proxmox VE installation and it doesn't recognize my Raid array, so how can I load raid drivers during installation? This is the driver reseller provided: ...
2
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1answer
146 views

Changing time or offsetting it in OpenVZ contained server

I am trying to run a VPS, a Debian box contained in an OpenVZ container. Obviously, I cannot use time --set or any such command, as the time must be set via the parent node. The owner of the parent ...
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1answer
403 views

How to edit or create roles in Proxmox VE?

How can I create Roles or edit them with specific privileges in Proxmox VE ?
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1answer
65 views

One-to-one mapping of port range from Hardware Node to VZ Containers with iptables

At anytime I have about 3-4 VZ containers on a server(the Hardware Node on CentOS6). I have webservers, ssh, mail, etc running on the different Containers. From another host in the network, they are ...
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1answer
412 views

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
3k 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
304 views

CentOS 6.3 Virtual under OpenVZ cannot ping, host lookups, outbound connections while postfix running

My best theory is that some kernel limit is being hit preventing outbound connections. We have tried basically everything from tcpdumps to provisioning an entirely new virtual server (we do not have ...
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1answer
307 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
505 views

Can't Install php5-dev on Ubuntu 12.04 running OpenVZ

I'm trying to fetch the php apc package using pecl and running into a problem that I believe may be caused by OpenVZ. To do so I need php5-dev. When I try to install it via apt-get, I get this: ...
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1answer
268 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> ...
0
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1answer
407 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
533 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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3answers
1k views

Should I choose KVM/XEN over OpenVZ or use them together?

I've got a dual xeon e5504 server, with [for now] only 8GB of ram. Storage is'n impressive either: 3x 146GB sas in raid5 + 500GB sata drives. Currently it works as a development server, but it's over ...
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1answer
883 views

Cannot open TUN/TAP dev /dev/as0t0: No such file or directory (errno=2)

I just attempted to install OpenVPN Access Server on my Debian VPS that uses OpenVZ. It installed fine, however when I try to start it from the administration panel, I get these errors: process ...
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1answer
358 views

Is it possible to disable or tune filesystem cache sharing for OpenVZ?

For OpenVZ, an implementation of container-based virtualization, it seems that host and all guests are sharing the filesystem cache. This sounds paradoxical when talking about virtualization, but this ...
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1answer
160 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
416 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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1answer
164 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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376 views

OpenVPN No Connect/Timeout

I have 2 OpenVZ Ubuntu servers hosted with a vps vendor, both with an OpenVPN link back to the office network, along with several transient laptops/android phones using the vpn with all working ...
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2answers
300 views

Allowing outbound traffic with APF/iptables for OpenVZ container

I have apf installed on a OpenVZ container (proxmox 2.1). The config is pretty much vanilla and things are working. My external services like ssh and http are working. My problem is that all ...
0
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1answer
221 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 ...
0
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1answer
91 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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0answers
271 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 ...
2
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1answer
615 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
203 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
243 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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1answer
101 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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2answers
770 views

Why can't I change the mode of /proc/sys/kernel/pty/max even when I am root?

Since pty is limited, I want to modify the content of /proc/sys/kernel/pty/max. The original value in max is 4096, and now I want to modify it to 10000. [root@home pty]# pwd /proc/sys/kernel/pty ...
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1answer
328 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
45 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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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
2k 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 ...