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Questions tagged [openvz]

OpenVZ is an open-source virtualization container technology, like LXC.

OpenVZ runs a Linux kernel in a container to provide a virtual private server VPS, or virtual environment VE. It is the free open-source component of the more fully-featured commercial Virtuozzo platform.

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"echo 3 > /proc/sys/vm/drop_caches" - Permission denied as root

I am currently having some issues with the cache. It is a little too much right now so I wanted to clear it. I googled and found this little command: sync && echo 3 > /proc/sys/vm/drop_caches. I am logged in as root over SSH (not using sudo). These…
BrainStone
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Installing VirtualBox inside of OpenVZ - missing sources

I'm attempting to install VirtualBox inside of an offsite OpenVZ instance I got a good deal on. The point being to run a small Windows XP box for some kind of Windows Server. Yes, it's an experiment. No, it's not for production. It seems like…
jocull
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Pulling all of a process's swapped memory out of swap

How would one go about quickly pulling all of a process's swapped memory out of swap without writing to disk? The context on this issue is trivial, as the systemic issue necessitating the question is being handled by other parties. However, right…
Brandon D
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Poorly performing java application vs poorly performing server

This is a very generic question, but it has been coming up more and more often for me. I would like to try and determine an appropriate course of action for this generic case, as I think it could benefit me and other sysadmins in the future. The…
cat pants
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ping receives no packets, but tcpdump can see them coming in

I'm migrating an old Ubuntu OpenVZ instance (Jaunty) to a new CentOS 6.3 host (using vzdump/vzrestore). Now networking does not work properly. Facts: It works just fine if a setup a new OpenVZ instance. I can connect INTO the old instance perfectly…
miracle2k
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Why buffers equals to used memory?

I'm using Ubuntu 11.10, virtualized by OpenVZ. That output of free -m shows that buffers is always equal to used. total used free shared buffers cached Mem: 2048 1079 968 0 …
Zippo
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Why different CPU count from nproc and nproc --all in OpenVZ container?

I'm trying nproc and nproc --all in an OpenVZ container to count the number of CPU threads assigned to the vps by upstream provider. While nproc resulting 1, nproc --all resulting 24 CPU threads. May anyone please help me in explaining this? The…
Abhik Bose
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No space left on device

Hello I'm running openVZ on my debian machine with debian containers and now I can't run apache, because of no space left. I checked df -h for finding which partions is full and here is an output: Filesystem …
Michal
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Replacement for auditd in OpenVZ

Are there any replacements for auditd to use in OpenVZ containers? ProxMox VE (pve-manager/3.4-6/102d4547 (running kernel: 2.6.32-39-pve)
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Creating Containers in OpenVZ

After using the instructions I found on http://www.unixmen.com/install-and-configure-openvz-in-ubuntu/ I installed OpenVZ on Ubuntu 14.04 LTS, which is running in WMware Workstation 10.0.3. Then I moved to…
Tanatos Daniel
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Docker like solutions for OpenVZ containers

We have been providing OpenVZ containers(VEs) for developers working on some projects - this was done from a purely economical perspective. I have been asked to setup a Docker-like system within the OpenVZ containers for a continous integration…
Ramesh Pradhan
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Securing /tmp on OpenVZ

/tmp should be mounted as a separate filesystem with the noexec,nosuid options set /var/tmp should either be symlinked to /tmp or mounted as a filesystem /dev/shm is not mounted with the noexec,nosuid options (currently: none). You should modify the…
Parmeet Nanner
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How to show loaded kernel modules inside OpenVZ virtual server

I am trying to find out what kernel modules are loaded inside a OpenVZ virtual server. Command lsmod is empty and I believe the reason is the way how OpenVZ's virtualisation is working. Specifically, I like to know if the inotify module is loaded. I…
Hurrdurrfurr
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Ubuntu filesystem buffers/cache always empty

I have a virtual server with ubuntu 10.04.4 LTS and plesk (preinstalled by hosting company). Now i have seen that the buffers/cache are always empty. Current uptime is 22 days. free and htop shows the same values. root@server:/root# free -m …
corvus
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How to use a backup in OpenVZ

I have a backup (.tgz file) that is an openvz virtual machine. i followed this article and i setup an openvz container but how i will use my backup file? EDIT: i found the tool ovz-web-panel (i am new to openvz :) )
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