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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Proxmox vps container connection problems

I have Proxmox on my node server which have ip:5.189.190.* and I created openvz container on an ip : 213.136.87.* and installed centos 6 on it The problem: Cann't connect to container ssh directly ...
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276 views

Some docker containers fail to start with OCI runtime error after uprade to Virtuozzo 7

the hosting provider of my KVM (Strato) recently upgraded the version of Virtuozzo they were using from 6 to 7. Since then a few of my docker containers fail to start with the following error message: ...
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1answer
1k 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) Then i try to start ...
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Cannot yum install vdo kmod-kvdo

I am trying to install kmod-kvdo and vdo but I get these errors. yum install vdo Loaded plugins: fastestmirror, langpacks, openvz, priorities Loading mirror speeds from cached hostfile epel/x86_64/...
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1answer
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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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3answers
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OpenVPN don't start: --cert fails with 'client.crt': No such file or directory

I have a VPS Server running with openVZ and CentOs 6 and I want to install openVPN on it. I followed this tutorial: https://www.digitalocean.com/community/tutorials/how-to-setup-and-configure-an-...
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2answers
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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
757 views

Trunk vlans inside openvz container (Proxmox)

I have a node running OpenVZ CT (ProxMox). eth1 on HN are bridged through vmbr1 to veth device on CT101 (eth1 inside container). (Host Node) eth1 -> vmbr1 <- veth101.1 <- eth1 (CT101) No VLANs,...
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1answer
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Error 18446744073709551615 when running iptables in OpenVZ container

This is related to the question I asked before. Now I am getting a different error. iptables: Unknown error 18446744073709551615 when trying to apply a simple rule in VZ container iptables -t nat -...
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1answer
33 views

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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1answer
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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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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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Is Ploop a bad idea for OpenVZ?

I know that with Ploop you lose disk space as files are added/deleted within a container and you have to manually compact the container, but i have also read that if you reboot or there is a crash the ...
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2answers
427 views

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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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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1answer
606 views

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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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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2answers
21k 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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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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2answers
4k views

aws s3 sync: how to exclude proc, sys directories

I can't seem to get the aws sync s3 command to exclude directories. I am backing up a mounted filesystem from OpenVZ which is located at /vz/root/100. My command is: aws s3 sync /vz/root/100 s3://[...
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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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368 views

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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1answer
528 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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1answer
106 views

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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What exactly is AVAHI?

CentOS 5.2 My VPS host rebooted (checking with host support now) and I noticed the following in /var/log/messages Aug 28 11:57:52 echo avahi-daemon[21633]: **Found user 'avahi' (UID 70) and group '...
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0answers
126 views

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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1answer
501 views

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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2answers
416 views

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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3answers
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How can I install only the proxmox kernel on Debian on Wheezy

I'm going to run two servers with OpenVZ on Wheezy. Since there are sadly no OpenVZ kernels in debian anymore I want to use the Proxmox kernel instead. I'm doing all replication with scripts I have ...
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1answer
863 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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1answer
357 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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1answer
678 views

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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3answers
783 views

ip6tables rules are completely ignored inside OpenVZ container

We have set up IPv6 networking on openvz using bridged veth devices. The IPv6 traffic to and from the VEs works fine. ip6tables works on the HN and iptables work on the VE. Inside the VE we can set ...
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1answer
348 views

Can't run CSF on the host machine using Open VZ

I managed to configure CSF on my three VM inside OpenVZ, but when I try to run it on the host, all the VMs become unreachable. I can see that the host is been attacked, and it would be critical if it ...
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1answer
200 views

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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0answers
613 views

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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1answer
12k views

OpenVPN server running on openvz. How to write iptables rule without masquerade?

I am configuring a VPS which is running on openvz as an OpenVPN server using a tun interface. I am having some trouble with the iptables rule as MASQUERADE is not available. If MASQUERADE were ...
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1answer
2k views

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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1answer
252 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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1answer
498 views

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 ...
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0answers
630 views

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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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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1answer
929 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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0answers
73 views

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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2answers
243 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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0answers
654 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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0answers
162 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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2answers
2k views

Find IP addresses with most connections on system

I am currently experiencing some attacks on my OpenVZ server (CentOS 6.3 64bit), which is saturating the public ethernet interface (currently accessing SSH via the private interface). Is it possible ...

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