Unbreakable (high availability) clusters

With VMmanager, you can set up a high availability infrastructure and ensure uninterrupted operation of services and business processes.

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What are Unbreakable clusters

If one of the nodes in the virtualization cluster fails, the VMs will automatically be recovered on an intact node. Recovery occurs even if the VMmanager platform itself fails.

High availability management mechanism in VMmanager

The high availability mechanism is supported in clusters of two or more nodes with Ceph or SAN storage and KVM virtualization.

In a high availability cluster, one of the nodes is designated as the master. The master node monitors the availability of other nodes. Factors taken into account include:

  • availability of the master network;
  • availability of network storage;
  • complete node failure;
  • test IP address — for cases when a node has lost access to the master network, but the network is still available to the VM.

Disaster recovery of the node

If the master node detects a disaster, the recovery procedure begins: virtual machines are started on an intact node. In total, it takes 15 seconds to a minute to recognize a disaster. Relocation of virtual machines and their startup on a new node takes a few seconds.

Three types of disaster in a high availability cluster Three types of disaster in a high availability cluster

In a high availability cluster, you can select VMs for auto-recovery and set the order of migration.

Our implementation of high availability avoids the Split Brain scenario - when two virtual machines are connected to the same disk at the same time.

To provide high availability of the VMmanager platform itself, it can be deployed on a virtual machine inside a high availability cluster.

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VMmanager
Hosting
For service provider companies. Allows to serve external clients under the VPS-Hosting model
  • Automatic provisioning of VPS from 4 seconds
  • Multi-tenant architecture
  • KVM virtualization
  • Lightweight LXC/LXD containers
  • Built-in self-service portal
  • Integration with billing systems
  • Virtual networks
  • Flexible service customization and REST API for custom integrations
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VMmanager
Hosting
Basic functionality of the virtualization platform

KVM hardware virtualization

Creating and managing KVM-based virtual machines

LXD containers

Creating and managing LXD containers

Guest OS repositories

A set of operating system templates to be installed on a VM

Local user management

Creating, editing and deleting local accounts for using the product

User management through MS AD/Free IPA/LDAP integration

Centralized management of user permissions through synchronization with Active Directory/Free IPA/LDAP directory

User self-service portal

Client area for ordering and managing services

Virtualization server management

Automated configuration and customized maintenance of the physical server

Support for leased physical equipment

The option to use rented physical servers

Support for L2 networks—VLAN, bond, bridge

The option to configure public and private networks, use VLANs to segment networks, add bridges, and create bonds

Support for L3 networks—IP-fabric

Support for L3-managed networks - iBGP-based IP-fabric, which can be used to create a VM cluster with public IP addresses over a private LAN

Support for virtual networks—VXLAN

The option to create virtual networks based on VxLAN technology, which function only among VMs of the same user

IP address management

Adding and deleting IPv4 and IPv6 addresses, creating PTR records

Geographically distributed node clusters

Managing geographically remote clusters of nodes from a single window

VM distribution policies by node

Configuring rules for placing VMs in cluster nodes

Software fine-tuning on a VM (Shell/PowerShell)

Installing, upgrading and configuring any software on virtual machines both when creating VMs and at any point in their lifecycle using Shell and PowerShell scripts

Network storages (Ceph/SAN)

The option to connect clusters to Ceph and SAN storage

Local storages

Support for local LVM storage (with RAW virtual disk format), DIR (with RAW and Qcow2 formats)

REST API available

Integration of VMmanager with any external software via REST API

Live migration of VMs between nodes

Migrating a VM to a new node without stopping

Live migration of VM disks between storages

Migrating a VM disk to another storage

Built-in VM backup system

Creating backups of a VM for its subsequent recovery, including automatically on schedule

Built-in node and VM monitoring system

Tracking RAM use, CPU and hard disk load, network activity, and promptly notifying the administrator if the indicators are exceeded

High availability

Organizing high availability infrastructure and ensuring continuous operation of services and business processes
ISPsystem ecosystem

Integration with BILLmanager

Integration with the billing system for the sale and resale of services

Integration with DCImanager

Integration with a multivendor IT infrastructure management platform

Integration with IPmanager

Integration with the control panel to manage the use of IP addresses

Integration with DNSmanager

Integration with the platform for automation of domain name server management
Third-party integrations

Integration with Terraform

Integration with resource management software as part of the Infrastructure as Code concept

Integration with Swagger

Integration with an interactive shell for working with API

Integration with Zabbix

Integration with the system for monitoring tasks, errors, VMs, IP addresses and physical servers

Integration with Grafana

Integration with the visualization system for integrated monitoring

Integration with Telegram

Integration with messenger to receive notifications about the status of VMs and cluster nodes

Integration with WHMCS

Integration with the billing system to sell various services as VPS, VDS, IaaS, and SaaS

Integration with PowerDNS

Integration with a high-performance DNS server
OS supported for platform installation

AlmaLinux

Option to install VMmanager on Astra Linux

Ubuntu

Option to install VMmanager on Ubuntu