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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9
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1answer
563 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 ...
3
votes
1answer
2k views

Does our VPS have its kmemsize limit set too low?

Short Version: Are there any official guidelines on what the kmemsize barrier and limit should be set to for a container in Virtuozzo/OpenVZ intended to be used as a Web server? We've found posts ...
2
votes
1answer
545 views

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 ...
2
votes
1answer
628 views

Anyone using Archipel in production for managing virtual machines?

I am getting ready to deploy a new server for my company. We intend to use virtualization mainly for security but also to help with versioning and other issues. We have decided to use openvz. Now I ...
4
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0answers
1k views

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 ...
2
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0answers
19 views

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 ...
2
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0answers
185 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 ...
2
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0answers
488 views

Using ufw on OpenVZ-based VPSes

I'm facing with a problem to set up ufw on Ubuntu 12.04 running on an OpenVZ-based VPS. I know there is limitations for ufw. I googled a bunch of articles how to resolve the issue (like: http://blog....
2
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0answers
98 views

Ghost user in debian?

I have an openvz vps with debian, I am new to linux and the command line environment although i can setup a webserver. I have just noticed that there is a ghost user because when i execute /usr/bin/w ...
2
votes
0answers
734 views

Replacing TightVNC with alternate client (CONNECT parameter)

I am in the process of reverse engineering an existing system in an attempt to replace their existing TightVNC applet with something else (hopefully NoVNC if at all possible). So far, here is what I ...
2
votes
0answers
67 views

VE not stopable

One of my VEs sometimes stops working. I cannot reach it via HTTP, FTP or SSH, I only can enter it per vzctl enter X All tries to restart the VE result in a 'Operation timed out', even if I try '...
1
vote
0answers
7 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 ...
1
vote
0answers
155 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://[...
1
vote
0answers
568 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 ...
1
vote
0answers
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 ...
1
vote
0answers
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 ...
1
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0answers
372 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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0answers
2k views

firewalld service is running, but firewall-cmd doesn't work

I am new to Centos 7/Server management. I am trying to figure out how to work with firewalld. my kernel release is: 2.6.32-042stab084.20(OpenVZ) And: #firewall-cmd --version #0.3.9 The problem is ...
1
vote
0answers
115 views

Tracking user activity in openvz container?

I have been trying to figure out a way to track user activity in an openvz container for a long time now (auditd like in KVM's). This is a PCI-DSS requirement. I can't seem to find any good ...
1
vote
0answers
158 views

OpenVZ : live migration fails

I can't launch live migration of OpenVZ container between two proxmox nodes... Feb 05 03:30:27 starting migration of CT 102 to node 'madrid' (xx.xx.xx.xx) Feb 05 03:30:27 container is running - using ...
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vote
0answers
627 views

Client successfully connects to OpenVPN server but with no internet access over the VPN

I'm trying to setup OpenVPN with static key authentication(instead of TLS) on TCP port 443; but the client cannot access the internet over the VPN after connecting to the server. Here's my current ...
1
vote
0answers
668 views

OpenVZ - updating kernel and all containers

Last night I upgraded to the latest kernel of openvz. I rebooted the host node. It came up with the latest kernel. However, the containers are still running the old kernel. What I did on the host ...
1
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0answers
191 views

SolusVM Ubuntu 13.10 OpenVZ networking issue/bug

I currently have a server running SolusVM and using OpenVZ virtualization. I downloaded the new Ubuntu 13.10 from their official repo http://openvz.org/Download/template/precreated and installed it on ...
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0answers
664 views

OpenVZ High container load average, < 1 host load

This is something that has been confusing me for a while and I honestly can't figure out what is going on. I run several OpenVZ host servers for my own personal use and there is this one particular ...
1
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0answers
171 views

Performing yum update on an OpenVZ host

My company runs a handful of OpenVZ servers (HN) and hosts all the server as containers on these HNs. We have done some pentest and found out we have to do update the kernel on the HNs to resolve a ...
1
vote
0answers
164 views

Internet inside VE with fedora 14 and openvz rhel6 repo

Ok, so here is the set up: I've got fedora 14 running inside latest virtualbox with nat and networking is working. Inside this fedora I have installed openvz from the rhel6 repository and have setup ...
0
votes
0answers
43 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 ...
0
votes
0answers
41 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 --> ...
0
votes
0answers
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, ...
0
votes
0answers
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 ...
0
votes
0answers
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 ...
0
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0answers
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/ ...
0
votes
0answers
36 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 ...
0
votes
0answers
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 ...
0
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0answers
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 ...
0
votes
0answers
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 ...
0
votes
0answers
230 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 ...
0
votes
0answers
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 ...
0
votes
0answers
111 views

Bridge configuration on OpenVZ

I have been using an OpenVZ environment left behind by a previous employee. A while ago I needed to use virtual eth devices to try a specific application. After removing VETH might have misconfigured ...
0
votes
0answers
88 views

Ordering mount --bind and OpenVZ start on boot

I am using mount --bind to share some directories/files between containers. My issue is that on root server boot, the containers are started, but these mounts are not yet mounted. Some of the services ...
0
votes
0answers
194 views

Ploop vzctl compact ctid unable to reclaim

I have tried using the scripts and also command vzctl compact ctid to reclaim the new free space for the vps with the ploop, but it do not extend the free space. I am getting following result: Trying ...
0
votes
0answers
383 views

OpenVPN Port forwarding on a OpenVZ VPS

I've been trying for the past 3 hours to forward the 443 port from my client to the 20443 port on my server (CentOS 7 on OpenVZ), so i can access it on myserverip:20443. I have OpenVPN Access ...
0
votes
0answers
203 views

Dealing/Fixing the Ploop issue with OpenVZ — relclaiming lost space

So OpenVZ Ploop has a bug where if users add then delete files the space becomes unclaimed and the disk eventually runs out of space. Now there is a script that fixes that(included below). However, ...
0
votes
0answers
250 views

MariaDB inside Ubuntu OpenVZ CT: Error on delete of '/tmp/#sql' (Errcode: 1 “Operation not permitted”)

I've installed MariaDB 10.0.12 on a fresh OpenVZ container: ubuntu-14.04-x86_64-minimal.tar.gz. Unfortunately when I browse tables via Adminer I keep getting errors like these: Error on delete of '/...
0
votes
0answers
106 views

SSH chroot solution for Mutt

We have an environment tailored for our users to log in via ssh and instead of gaining access directly to a shell, users have a script in place of a shell. The script simply launches Mutt on the user'...
0
votes
0answers
178 views

How to diagnose sporadic performance issues?

I have a web application with very varying response times and can't find out what causes that. That's the (quite complicated) setup: Powerful (i7, 32GB RAM) dedicated server in a German data center, ...
0
votes
0answers
261 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 ...
0
votes
0answers
72 views

Where can I find the range of IP addresses of my container OpenVZ

I'm looking for the "range of IP addresses of my container"... Where can I find those ? /etc/network/interfaces ? ifconfig ? I don't know and I can't find any answers... I need it for this tutorial ...
-1
votes
0answers
6 views

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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0answers
14 views

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-...