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.

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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, ...
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OpenVz 7 - Host Shutdown / Reboot

Tonight my OpenVZ 7 host has rebooted and I am looking for the cause. The host is not reachable via internet, it works with a private IP behind a firewall with NAT. A SSH login would only be possible ...
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Proxmox - OpenVZ, incorrect disk use after crash

I've got a box running OpenVZ Containers on Proxmox. Yesterday the Proxmox machine locked up for a few minutes then returned. One OpenVZ Container, which was at 96% disk usage for a 250Gb disk size, ...
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Realtek RTL8111/8168/8411 ethernet card randomly disconnecting

System information: kernel: latest OPENVZ kernel (2.6.32-042stab140.4) centos version: CentOS release 6.10 (Final) network card type: Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/...
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Why KVM VPS is slower then OPENVZ

so i just purchased one KVM vps and when i bench it and compare it with my existing openvz vps i found it that its slower that openvz vps and when i checked processor info its bit wrong info so am ...
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Create custom OpenVZ templates

These days I installed OpenVZ on my CentOS 7 machine. I can create VPSs with OS templates downloaded from OpenVZ.org, but if I try to install it with unique templates, errors occur. I created a VPS ...
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Openvz containers each with public ip

I have a dedicated server (Centos7) with OpenVZ, Virtuozzo. The dedicated server has 6 usable public IPs. eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 8.8.30.228 netmask 255....
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Obscure systemd-logind message on Centos 7 running on OpenVZ 7

I am seeing the message below appear several times at random times on a Centos 7 64-bit virtual private server running on OpenVZ 7. I have no idea what it means, how to fix it or if it can be safely ...
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140 views

ip6tables issue on CentOS 6.10 OpenVZ server: cannot unload modules

Hello friends at Serverfault! I'm having a weird issue with my CentOS 6.10 OpenVZ server (using Virtualizor), as I have enable IPv6 support. This server has basically exactly the same setup as three ...
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459 views

Apache karaf out of memory error

I am working on a virtual server from a local online hosting service where I would like to run an apache karaf instance. During start-up of the server, I get out-of-memory exceptions: Exception in ...
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Run Virtuozzo OpenVZ 7 prlctl commands as non-root user

I created a Virtualbox VM for Virtuozzo OpenVZ 7 using this image: https://download.openvz.org/virtuozzo/releases/openvz-7.0.9-439/x86_64/iso/openvz-iso-7.0.9-439.iso I want to create a Vagrant box ...
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Squid and OpenVPN slow on OpenVZ?

I have two vps, one on OVH with KVM, the second on another hosting with OpenVZ. On OVH the speed is ok with squid and openvpn, i reach 100mbit (max speed of my connection), but i have a problem with ...
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ANSIBLE How to relative dict items to task results at loop?

Need to register results from loop (task #1) and check when command.results stderr is not empty(task #2) relatively to loop items, so I can use this condition at new tasks. The problem is that: when ...
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iptables NAT HTTPS on external IP to internal IP - debian

I've been trying to NAT HTTPS traffic on an external IP (say debianIP1) to an internal IP (say debianIP2) based on several examples/guides, like: How to do port forwarding/redirecting on Debian? ...
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Ploop error creating openvz containers with virtualizor

I'm new to Virtualizor and trying to get started. I installed OpenVZ 7 from ISO (Version 7.0.8-390 from here) and everything seemed fine until I installed Virtualizor and tried creating containers. No ...
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332 views

OpenVZ (CentOS 7) no internet access while it worked before

Strange problem here ... I am using OpenVZ and have 3 containers. My setup worked fine for 3 years and yesterday something happend and i can't seem to find the issue on one container. The other 2 ...
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772 views

dircolors: no SHELL environment variable, and no shell type option given

On interactive login I get: dircolors: no SHELL environment variable, and no shell type option given But I do have SHELL variable set: % set | grep SHELL SHELL=/bin/bash SHELLOPTS=braceexpand:emacs:...
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System load on OpenVZ hardware node - is it reliable?

I discovered something that surprised me. On OpenVZ hardware node there is a big load, let's say the load is 210 (it have many CPU cores available but 210 is still high as for this server). But the ...
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How to enable swap in OpenVZ container?

The problem Recently I decided to rent a $1.00/month VPS. I knew there was going to be a catch for the price and the specs and I think I've found it... I cannot create swap files as they VPS provider ...
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Can a Centos 7 OpenVZ Container run on a Centos 6 Node

Since OpenVZ isn't actually virtualization and just a container would there be issues setting up a CentOS 7 container on a Node that is only running CentOS 6?
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OpenVZ Failed to start LVM2 PV scan

I am running OpenVZ, I have created a logical drive using lvcreate all works well when setting it up but when i power cycle the machine it's giving me some errors on boot; [FAILED] Failed to start ...
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242 views

OpenVZ container with different subnet public IP (using venet)

I am using Proxmox 3.4 with OpenVZ and venet. In various servers, everything is working fine. But in a new dedicated server, I cant ping my only container. The public IP of the HN is 158.69.241.xxx ...
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OpenVZ to VMware / Hyper-v / KVM convertion

vzctl - 4.1 guest os - altlinux 5 (2.6.32) filesystem - simfs no ploop I need to convert/migrate/relocate a bunch of containers from legacy openvz server to vmware/kvm/hyper-v system. I tried to ...
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Inaccurate memory usage reading under OpenVZ?

I have got an OpenVZ-based VPS running CentOS 7.4 (Linux hostname 2.6.32-042stab116.2 #1 SMP Fri Jun 24 15:33:57 MSK 2016 x86_64 x86_64 x86_64 GNU/Linux). The workload is a single Java application. ...
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906 views

Configuration of IPv6 on Debian 9 on OpenVZ

Is there any information on configuring IPv6 on an Debian 9 VPS running on OpenVZ? I have a VPS which was running an older version of Debian on OpenVZ which I needed to upgrade to support some newer ...
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How to set RAM limit inside OpenVZ container

I had VPS on OpenVZ (Ubuntu Server 16.04). My hoster made some weird migration and put that container inside KVM. So now it looks like I have 8 exabytes of RAM: $ free -h total ...
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239 views

Openvz vs OpenVZ within SolusVM

is there a difference from a VPS user point of view between regular OpenVZ and OpenVZ from within SolusVM ? My understanding was that OpenVZ doesn't have the overhead of a true hypervisor and then it ...
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153 views

how to read ram usage from new versions of free and htop?

before I switched to Ubuntu 16.04 64bit server on my VSPes (based on OpenVZ), I used to read the output from free and htop to analyze the actual RAM usage. Now with 16.04 that comes with the new free ...
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647 views

Debian 9 automated install (OpenVZ) hangs on two different dialog screens

After redoing the installation by hand, I have more information, so therefor I am editing my post completely so it's better readable and hopefully someone can provide a workable solution or workaround ...
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How do I kill a specific service on a specific container in Openvz?

I want to kill a specific service in a specific container in an Openvz Server. In this case, I want to kill every service using port X on Container A. Could you please let me know which command I ...
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832 views

Why are GlusterFS replicated volumes not recommended for Hosts in different datacenters?

Any tutorial I can find about GlusterFS replicated volumes assumes that both (all) bricks are on the same private network which then also leads to the conclusion they must be in the same datacenter. ...
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246 views

NVMe-Dedicated Server without Virtualisation: Big speed benefit? [closed]

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 ...
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63 views

Memory bandwidth in OpenVZ container

What determines memory speed of OpenVZ container? I've run sysbench --test=memory --memory-block-size=1M --memory-total-size=1G run on several OpenVZ powered VPSs from different providers and observed ...
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772 views

How to route ipv6 to an openvz container?

My hosting provider, OVH, offers me a /64 ipv6 block. I'm pretty new to ipv6 and a bit of a newbie in networking in general. I was able to route an ipv6 on my proxmox server by properly configuring ...
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NFS server not serving share after reboot

I have two Linode containers. Box A is our general purpose web server. It occasionally needs to access Box B, which is set up as an NFS server. When Box B reboots, Box A is unable to access any NFS ...
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What kind of trouble will it cause to run an older kernel?

I started to try to get acquainted with openvz. Following the instructions here I installed my first ever openvz server on centos 6. The first container I spawned was based on the ubuntu-16.04-...
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Unable to connect to services bound to 127.0.0.1

I have a Debian wheezy server running a few web applications, a MongoDB database and a Redis server behind a NGinx server. Only the NGinx server is public facing and the other services are reverse ...
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1answer
246 views

OpenVZ Reboot failed for Ubuntu 12.04 32bit container

The container on OpenVZ server was setup using the template Ubuntu 12.04 32 bit and it was successful.The container fails to load when reboot operation is preformed.Re-installation of the container ...
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VPS (Virtual Private Server) kills JVM process when exceeds guaranteed RAM [closed]

VPS: Operating system: Ubuntu Guaranteed RAM: 10g Burst or Dynamic RAM: 20g When exactly a VPS ( Virtual Private Server) kills the process when dedicated memory limit exceeds? And which process gets ...
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How do I migrate Proxmox 3.x openVZ containers to Proxmox 4.x LXC?

I have just upgraded one of the Proxmox machines in a cluster from 3.4 to 4.2 following these instructions. Normal VMs have migrated correctly. We had to change hard drives from virtio to ide so that ...
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2k views

firewall-cmd on OpenVZ CentOS 7

So I've been trying to set up a webserver on my VPS with CentOS 7. To do this I've used this tutorial. Installation of MySQL/MariaDB and PHP worked successfully. However I can't access my server, ...
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158 views

Back up rented VPS that does not have that option

I'm currently renting a linux VPS from a host that doesn't grant the option to create a backup or snapshot. In my previous experiences with other hosts most of them had the ability to do so. And for ...
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1answer
415 views

Connecting two OpenVZ internal networks so containers can see each other

I have two OpenVZ Hosts with containers on them. This is the current layout: Host-A: (eth0 (connected to internet), eth1 (connected to Host-B)) Host-B: (eth0 (connected to internet), eth1 (connected ...
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593 views

Elasticsearch high RSS memory consumption

I am seeing too high memory consumption in my elasticsearch instance. I set ES_HEAP_SIZE=4g. The starting command for ES starts with: /usr/lib/jvm/java-8-oracle/jre/bin/java -Xms4g -Xmx4g So far so ...
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1answer
112 views

Upgrading Debian Squeeze with OpenVZ to Debian 7/8 with LXC

I have a few servers which are running Debian 6 (Squeeze) which uses OpenVZ to run containers. The containers are some Debian 6 and some Debian 7. Squeeze was the last version of Debian to support ...
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2answers
2k views

Extract files from ploop disk image

I have ploop disk image created by dumping an OpenVZ container. There are two files: 791 DiskDescriptor.xml 2.4G root.hdd Is there any way to extract the whole root file system from there on ...
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66 views

German Umlauts (but only uppercase) are broken

I have a proxmox3 server. I login via SSH. Umlauts (öäüÜÖÄ) works well - nevertheless if upper or lowercase. Then I login in my openvz node (debian wheezy) via: vzctl enter 100 In this node, on ...
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1answer
135 views

SolusVM Migration

I have an old server on which I am hosting about 30 OpenVZ VPS Servers. I have purchased a new server which is much more powerful and I plan to do a complete migration in the future. Currently I would ...
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1answer
282 views

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 ...
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OpenVZ Container cannot access internet

I have Daedicated Server, and I want to split it on two virtual servers with two diffrent IP Adresses. I bought two exetrnal IP adresses for this server and now I have three, one Main Address, one for ...

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