Configuring an OpenVZ cluster involves setting up multiple OpenVZ servers and configuring them to work together. Here’s a simple step-by-step guide:
1. Installation of OpenVZ
Install OpenVZ on all servers you wish to include in the cluster. Follow the instructions for your specific Linux distribution on the OpenVZ wiki.1. Configure OpenVZ
After installation, ensure OpenVZ functions well on every server. Adjust parameters according to your requirements. For this, you may need to edit the OpenVZ global configuration file (`/etc/vz/vz.conf`).1. Installing Cluster Software
Install a cluster software that supports OpenVZ like PaceMaker, Red Hat Cluster Suite, or OpenStack to manage and orchestrate the resources. Installation instructions vary depending on software.1. Networking
Configure a network between all servers in the cluster. This involves assigning static IP addresses to all servers, setting up hostname resolution through DNS or Hosts file, ensuring all servers can communicate with each other.1. Create and Migrate Containers
After installing and configuring OpenVZ and the cluster software, create OpenVZ containers on one server. Then, use the `vzmigrate` command to migrate containers to another node as per your cluster configuration.1. Cluster Configuration
This step is distinct on the cluster software you utilize. For example, with corosync and pacemaker, you have to set up and configure the communication between the nodes, define resources, configure resource constraints and rules, and set up STONITH.1. Test Your Cluster
Test your configuration by manually stopping a service in a container or stopping an entire server and check whether the failover works as expected.This set of steps outlines very basic configurations. For more advanced settings like multiple network interfaces, shared storage, high-availability, automatic failover, and load balancing, you might need more research or consulting documentation or support.
Each step is much more complicated and requires Linux skills and understanding of cluster and server technologies. Always follow documentation and best practices from both OpenVZ and whatever cluster software you use.
