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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OpenVZ server error setting template

i am getting this error when trying to change server template Internal error: Command 'vzctl set 1 --applyconfig basic --save' execution failed with code 154 Output: Opening delta /vz/private/1/root....
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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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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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ufw not working on openvz vps

I'm trying to make ufw work for an Ubuntu 14.04 vps using openvz. All questions about this problem (like this one) lead to the same site. This one: http://blog.bodhizazen.net/linux/how-to-use-ufw-in-...
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39 views

How to install Windows on a OpenVZ SolusVM VM

So I have just installed SolusVM (Master) on a VPS and added a dedicated server as a node to the master. And have also added an IP block to the panel. I have successfully created a CentOS VM through ...
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18 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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40 views

pound server listening to 0.0.0.0 causes a 301 redirect loop?

I have a pound 2.6 server in front of an apache 2.4.7 server. Both are in openvz containers in the same host and both have private ip addresses, as follows: [www.]my.domain:80 --> Internet --> ...
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38 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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23 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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30 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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25 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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28 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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44 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
46 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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13 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
50 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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9 views

configure burst ram for openvz container

Can somebody help me out as to how can we set the burst ram for OpenVZ container using proxmox API. I tried using the following command but with no success: pvesh set /nodes/pve/openvz/{vmid}/config/ ...
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35 views

Cant set extra option to VPS in proxmox 3.4

I am using Proxmox VE 3.4 to create an openvz container...i was able to create a vz container but i want to know are the advanced option like VNC, ppp, tun tap feature available in proxmox VE on any ...
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36 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 ...
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152 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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45 views

blocked connection to the ts server under OpenVZ

I have virtual machine with Ubuntu 12.04 under OpenVZ. Teamspeak server v. 3.0.11.4 All ok if i connect from LAN or subnet of my provider. But outside traffic blocked. eth1 - LAN interface of ...
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564 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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24 views

Why does openvz use Vswap when there is guaranteed memory

And does it really matter? I am hosting through nosupportvpshosting.com and have 2 GB guaranteed memory and 2 GB Vswap. I never get near the 2 GB of guaranteed but often have a small amount of Vswap ...
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58 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 ...
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How are kernel networking settings handled in OpenVZ containers?

I’m a little confused on how containers handle networking. For our normal systems, we’re enforcing things like Disable Source Routed Packet Acceptance, Disable Send Packet Redirects, etc. We usually ...
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227 views

GlusterFS can't create volume (error setting extended attributes)

So, I'm running GlusterFS (latest version) on 9 servers, and attempting to create volumes. They're all peers, and all that's okay. They're running in different geographical locations, on different ...
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16 views

tcpsndbuf causing max cpu load (using proxy_mod on openvz)

I do run a web application, which I stripped to the max to avoid a high tcpsndbuf values. Still a failcnt on tcpsndbuf will be reached after a few days and very, very little traffic. I initially ...
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82 views

CentOS host, OpenVZ CentOS container with its own IP cannot access internet

I'm running CentOS 6, and I've got OpenVZ installed (installed with this guide). I'm new to virtualization, and I'm just using these containers for my own projects. I followed all instructions in ...
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1answer
62 views

ip6tables forward chain filters all ports

Trying the following on a centos 6 node (running openvz kernel) ip6tables -F ip6tables -X ip6tables -P FORWARD DROP ip6tables -A FORWARD -p tcp -m multiport --dports 21,22,80,443 -j ACCEPT ip6tables -...
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55 views

What packages can I update in OpenVZ contained guest?

Recently I bought low cost (1$/m, 256 MiB) VPS based on OpenVZ virtualization. There are pre-built guest Debian 7.0. I like stay with more recent Debian stable release - 8.0. Is it safe to: sed -i '...
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Determining what type of virtualisation used on VPS/VDS? [duplicate]

I bought VPS/VDS and want to know what virtualization used. I have a root prompt in Debian Linux.
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14k views

CentOS 7 firewall-cmd not found

I have just installed CentOS 7: [root@new ~]# cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) I am trying to configure the firewall, and I'm told that in CentOS 7 iptables is no ...
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434 views

can't initialize iptables table `nat' in Proxmox Openvz vm

When I tried to run an iptables command in the Proxmox OpenVZ vm, I got the following error: # iptables -t nat -A POSTROUTING -o venet -j MASQUERADE && iptables-save iptables v1.4.21: can't ...
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89 views

Can't ssh after configuring sshd_config

I have configured my sshd configuration files to listen to ipv6 addresses, but forgot to uncomment ipv4 local addresses. Here is a snippet from my configuration file: AddressFamily any ListenAddress ...
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1answer
23 views

Is it possible to transfer OpenVZ VPS image to XEN platform?

I'm having a memory related issue with my vps on openvz platform and I guess that my hosting provider is overselling RAM. So, I'm thinking to move on a xen platform since ram cannot be oversold but I ...
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1answer
124 views

OpenVZ Host Node showing up in traceroutes

I've installed SolusVM as a Master server that will host OpenVZ containers on a fresh install of CentOS 6.6 What i am now noticing is that if i traceroute one of my containers IP addresses i see the ...
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56 views

OpenVZ: Node iptables doesn't append rules

I want to make a set of rules on iptables inside of a node, but it seems that the iptables isn't appending all the rules or somehow and kick me out everytime I run the following script (I'm using this ...
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287 views

LXC containers on a OpenVZ VPS

I am trying to run LXC on a VPN that is hosted in OpenVZ, I have tried doing this with multiple image flavours, ubuntu. centos, debian... with no luck. LXC installs correctly but containers fail to ...
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989 views

IPSec on OpenVZ multiple ip addresses, using 127.0.0.2 on venet0

I have an OpenVZ box with IPSec enabled. root@wa000:~# ipsec verify Checking your system to see if IPsec got installed and started correctly: Version check and ipsec on-path ...
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94 views

Debian limit number of TCP sockets for a process (especially tor) on OpenVZ

I have a debian 7.8 server, running on OpenVZ. On this server I'm running a tor relay and some other network services (like apache and mysql). However the tor service seems to eat up all my available ...
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36 views

IP from multi gateway, openvz debian

I have a problem with network in my dedicated server. I have a host: ip 188.60.240.71 netmask 255.255.255.128 gateway 188.60.240.1 broadcast 188.60.240.127 network 188.60.240.0 I order additional ...
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1answer
217 views

Port Forwarding through OpenVPN to Client on OpenVZ

Edit: Okay I will try to make this more clear. What I am trying to achieve is simply a port forward, through my OpenVZ hosted openvpn server, to a service running on a client. There are a few ...
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265 views

How to clone a VPS with OpenVZ [closed]

So I recently started reselling unmanaged VPS. Now I thought it would be nice if my customers could monitor their VPS and control it via a web panel thus I planned to install OpenVZ. I now want to ...
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23 views

How to prevent openvz container from adding another ip address?

How to prevent openvz container from adding another ip address ? I'm using VETH Container. I used this command to configure the network : vzctl set xxx --save --netif_add ethx,,,FE:FF:FF:FF:FF:FF
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177 views

HA Cluster with OpenVZ and DRBD

I would like to create an HA Cluster using OpenVZ and DRBD. I found this tutorial http://www.olindata.com/blog/2013/12/building-ha-cluster-openvz-drbd-heartbeat-and-pacemaker and I got as far as Step ...
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156 views

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 ...
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139 views

Why does an OpenVZ host show processes running in a container?

My OpenVZ (debian) host environment has only the minimal packages installed. Now I was irritated to see a mysqld process in top when the mysql package is installed and running only in one container. ...
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184 views

How to limit bandwidth from inside OpenVZ container without tc?

As the title says I would like to know if it is possible to limit bandwidth (download and upload) of OpenVZ container (from inside it) without use of tc or any additional kernel driver (VPS provider ...
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166 views

OpenVZ container(s) and NAT

I have been trying to days to solve my NAT issue with OpenVZ. I have used their guide on their website/wiki, however I just seem to be unable to get it to work. My Linux box is running on CentOS 6 (...
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370 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,...