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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.

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removing redudant kernal libraries after kernal reinstallation [migrated]

I'm learning to administer a VPS which has an openVZ kernel (= go easy...). I thought I'd attempt to load a missing kernal module by reinstalling my kernel with: sudo apt-get install -y linux-image-$(...
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1answer
75 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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1answer
55 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
96 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
63 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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45 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
130 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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43 views

OpenVZ: Add veth interface to bridge on container start

How do I add the interface created when using a veth to a existing bridge as soon as the openVZ container starts? This is wrt OpenVZ 7 where we cant supply the bridge option in netif_add and I cant ...
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1answer
423 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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245 views

OpenVZ venet0 network is unreachable

I'm testing out OpenVZ Virtuozzo containers for one our application deployments, but can't seem to figure out why the container can't access the network in host routed configuration. I followed the ...
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17 views

OpenVZ VM not accessible outside of network after reboot / running out of space

The host server that runs openvz ran out of space. I fixed that issue and then I issued a reboot. Now none of the VM's are accessible/pingable unless you're on the host's network. You can even ping ...
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1answer
110 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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348 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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48 views

Difference between /proc/user_beancounters numtcpsock and netstat -an?

Can you help me to understand the difference between the numtcpsock held value (actual value: 33) cat /proc/user_beancounters | grep numtcpsock And the value I geht with (actual value: 463) netstat ...
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86 views

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
673 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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34 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
160 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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78 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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485 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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21 views

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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1answer
428 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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1answer
191 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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1answer
52 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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1answer
602 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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3answers
1k views

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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33 views

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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1answer
1k views

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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199 views

How to backup openVz containers through R1soft CDP?

Is there a way to Backup OpenVZ container Through R1soft CDP edition (Installed on Dedicated Backup Server.) I can Backup Hardware Node But Cannot Backup Individual Container. or Tell me another ...
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1answer
151 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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96 views

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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316 views

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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2answers
1k 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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3answers
150 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
343 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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3answers
438 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
102 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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104 views

MySQL server is unreachable from OpenVZ container

Writing out of despair. Yesterday, as usual and having done this for thousands of times before, I'd installed MySQL server in the Head Node for using it from the OpenVZ container. I've created user, ...
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2answers
759 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
51 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
105 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
232 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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2answers
928 views

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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2answers
128 views

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 ...
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92 views

Using DNAT with IPtables

I am trying to figure out a DNAT issue and I am hoping I can get a hand. Basically I have a OpenVZ box that connects to my LAN via the SoftEther Client. What I am trying to accomplish is a way to ...
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1answer
160 views

Iptables stuck in D state all the time and causing server load

I am running iptables/csf on a centos 5.11 openvz vps. I can't start/stop/flush iptables/csf. Further looking into it I could see the csf is waiting for iptables. And iptables is stuck as you can see ...
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40 views

Identical VMs behave differently

I have 2 Centos 6.7 OpenVZ VPS'. I have copied the entire disk image from the first one (server1) to the second one (server2). Now I have a couple of issues with server1 that I don't have with ...
3
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1answer
2k 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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0answers
1k views

Debian container unable to start after migration from OpenVZ to LXC on Proxmox 4

After migrating a Debian 7 OpenVZ CT from Proxmox 3 to a LXC on Proxmox 4 it does not appear to start correctly. Fristly, migration was done by stopping the container on Proxmox 3, backing up to ...
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204 views

Can custom /proc mount options be set on OpenVZ containers?

I recently discovered that the way OpenVZ mounts /proc inside of containers by default isn't as secure as it could be (it's mounted as rw). When combined with insecure scripts on the server, this ...