Lik`s forum

LxCenter hosts and develops two well known hosting panels.

HyperVM – a complete and distributed virtualization manager, thats handles a wast array of features from creating, starting and stopping containers over bandwidth graphs and client handling.

Kloxo – previously LxAdmin, a feature rich lightweight hosting control panel, packed with everything you need as a hosting company, and also available with the smallest industri overhead.

But products are available under AGPL 3.0. Free, flexible and open ...

http://wiki.openvz.org/Remote_console_setup

http://lbvm.sourceforge.net/

The LBVM consists of several scripts that allow to load balance virtual machines (currently preconfigured: Xen and OpenVZ) among physical servers - the algorithm is fully configurable. LBVM uses the Red Hat Cluster Suite to provide high availability and rgmanager (part of the Red Hat Cluster Suite) to perform the actual migration. Developed cluster scripts for Xen and OpenVZ allow the rgmanager to perform live migrations with zero-downtime to provide maximum reliability and uptime. ...

View from the math side at UBC consistency check:

UBC consistency check

Code: Select all

wget http://download.openvz.org/contrib/utils/vzvalidate
perl vzvalidate

http://wiki.openvz.org/UBC_systemwide_configuration

http://www.solusvm.com/



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SolusVM Overview


We started developing SolusVM as a direct replacement for HyperVM as we were not happy using software that was publicly known to contain many flaws and had new exploits being found on a regular basis.

Over the coming months we will see SolusVM supporting other virtualisation technologies such as Xen and KVM. Version 1.0.0 currently supports OpenVZ over multiple nodes using secure encrypted inter-node communication.

OpenVZ resource limits can be a little tricky, even after reading through the documentation on the OpenVZ website. With this post, I hope to explain the /proc/user_beancounters file as well as provide an illustration of memory guarantees/limits in an example 256mb container.

Before attempting to understand OpenVZ’s memory limits, let’s recap Linux’s memory setup. This background information is important to firmly grasp OpenVZ’s behavior. You can safely skip this section if you already understand Linux’s ...

Traffic shaping with tc
From OpenVZ Wiki

Sometimes it's necessary to limit traffic bandwidth from and to a container. You can do it using ordinary tc tool.

Packet routes

First of all, a few words about how packets travel from and to a container. Suppose we have Hardware Node (HN) with a container (CT) on it, and this container talks to some Remote Host (RH). HN has one "real" network interface eth0 and, thanks to ...

# cat vps_iptables_tune.sh
echo "Checking iptables modules via lsmod and will autoenable all missing modules."
echo ""

lsmod|grep ipt_conntrack ||modprobe ipt_conntrack
lsmod|grep ipt_LOG ||modprobe ipt_LOG
lsmod|grep ipt_owner||modprobe ipt_owner
lsmod|grep ipt_state||modprobe ipt_state
lsmod|grep ip_conntrack_ftp||modprobe ip_conntrack_ftp
echo ""
echo "lsmod checks and modprobe part is complete."
echo ""

echo "Your /etc/sysconfig/iptables-config must have the following line :"
echo "IPTABLES_MODULES=\"ip_conntrack_netbios_ns xt_state ipt_conntrack ipt_LOG ipt_owner ipt_state ip_conntrack_ftp\""
echo ""

echo "Your /etc/sysconfig/iptables-config have now:"
grep IPTABLES_MODULES= /etc/sysconfig/iptables-config
echo "" ...

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