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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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Best type of virtualization when CPU has more threads than cores

I have a 4 cores/8 threads Intel Xeon processor. This is something I tried to particularly ask in SolusVM support, however I haven't got a good reply. I even don't know if they are right: they told me to, as I have 8 threads for 4 cores, opt for KVM…
bazaglia
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how much openvz burstable memory can be used

I want to buy a VPS having openvz virtualization. Now the applications that i m currently hosting( glassfish, mysql, mail) requires around 600~800 MB of RAM. Would I be able to run my applications if I go for 512 MB of ram and 512 MB burstable ram?…
Pradyut Bhattacharya
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Setup IPv4 local on IPv6 VPS

I have a dedicated server running multiple IPv6 only OpenVZ containers. I want them to be able to communicate with the IPv4 internet, but I realized that isn't going to be possible with IPv6 only. So they need to have an IPv4 address as well, not…
Nik Barres
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Can i do command "service network restart" on dedicated server?

If i do "service network restart" Linux command on my OpenVZ VPS host server (dedicated server where are virtual machines - VPSs hosted), how this can impact virtual machines? Can i loose SSH connectivity, why not?
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openvz containers optimization

I am trying to optimize 14 containers on 64 G.B ram , 16 Core processor based on Centos 5.9 Final 64 Bit Distribution The load average of the server up to 300 This is my memory stats # vzmemcheck -v Output values in % CTID LowMem LowMem …
iLinux85
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recipient rejected in a SMTP connection from a OpenVz container

I'm facing a strange problem. I'm getting a recipient rejected on a SMTP server only from inside an OpenVZ container, while from the physical server everything works fine. Here's an example of a telnet test connection while inside a routed Vz…
Atropo
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Find ddos attack on OpenVZ container

How do you figure out which OpenVZ contain is under attack from a dDoS? I know it is an attack because the b/w and incoming traffic shot WAY up. Can this be done with netstat? Are some attacks not going to show up on netstat like UDP if they hit a…
Tiffany Walker
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How to over 500000 cpuunits on OpenVZ

I have a OpenVZ and i would like to allocate more than 500000 cpu units. But the max i can set is 500000. Does he have a solution to give more power to my vm? According to all the sources I read (openvz wiki, various mailinglists, forums, ..) the…
Funzzy
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Is there any server virtualization software supports subdomains?

I installed openvz in my server but to create more virtual machines I need more than one ip address. But my service provider can only give one ip address for my server. Is there any software that supports subdomain or Server Name Indication. I…
isuru madusanka
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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 package lists... Done Building dependency…
dgw
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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
DiverseAndRemote.com
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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 order to reduce downtime? (AFAIK xfs is not…
cat pants
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How to login as root in vps from main server (Dedicated)

how to login as root in VPS from root main server without changing the existing root password? I have Dedicated server and use virtualizor OpenVZ for make it available for to build vps, but one of my vps i forget the password, and i would like to…
Muhamad Yulianto
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RAM usage by Apache server in Wordpress Site

I need some advice as I have a VPS OpenVZ with 1GB Ram and 1GB burstable. I am running a site on wordpress and my site users are about 2000 per day. My DB size is about 90MB and I am using latest wordpress 4.2.2. I have a problem that my site is…
Umair Ali
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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: 2.5 uid resource held …
THpubs
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