AccentOS is an OpenStack-based solution with an emphasis on developing functionality that is missing for operators and corporate clients.
OpenStack is OpenSource alternative to VMware, Hyper-V (since 2010, >100 thousand), incl. IBM, RedHat, Cisco Systems, Huawei, Oracle, etc.
Implementation of general architectural solutions, FT platform, HCI, metrocluster, HA for cloud resources.
Implementation of shared AccentOS cloud services includes storage virtualization, VDI, live migration, load balancing, VM resizing, cluster file system.
Automation of the work of AccentOS system administrators - FirstBoot, Backup, scaling, Tap-aaS, Monitoring, remote access, testing, autorecovery, AppLevel).
Security includes authentication, role separation, logging.

AccentOS focuses on the development of OpenStack in terms of the private cloud functions that companies lack (qualification, autonomy, information security).
1. Installation - Quick deployment and recovery of the cloud.
2. Hardware infrastructure – Metrocluster, HCI, Storage virtualization, high server availability, public cloud backup.
3. Services - high availability of VMs, live migration of VMs and block devices, cluster OS OCFS2.
4. Ready-made platforms for private cloud projects - VM image management, event scheduler, container management.
5. Desktop virtualization and application delivery.
6. Automation of the work of system administrators (FirstBoot, Backup, Zabbix, Tap-aaS, autorecovery).

Development of OpenStack in terms of functions missing for operators and hybrid cloud (scaling, automation, network services).
1. Rapid deployment of the cloud to the data center, deployment through containers.
2. Operator platform performance – NUMA, CPU pinning, Huge pages, SR-IOV, DPDK for implementing operator network services.
3. Services - NFV (OpenStack Tacker) – OvS, SDN (OvN), SDS (Ceph).
4. Configurations for clients - VDC, VPC, IaaC, PaaS, OSS/BSS.
5. PaaS - Delivery and dynamic provision of platforms and applications to clients (K8-aaS, DaaS, IaaC, DBaaS, BaaS).
6. Hybrid cloud for operators and AccentOS customers.
7. Automation of the work of system administrators (FirstBoot, Backup, Zabbix, Tap-aaS, autorecovery).

AccentOS implements a geo-distributed cloud (metrocluster), which allows to:

• Provide data center redundancy, including SDS storage;
• Implement a cloud FT platform;
• Distribute power in data centers;
• Provide the opportunity to implement FT at the level of client application systems.

AccentOS implements a hybrid cloud, integrating the local resources of the client’s IT infrastructure and the cloud resources of the IaaS provider.
This approach allows to:

• Reduce response time by bringing services closer to external and corporate clients;
• Ensure quick connection of additional resources;
• Increase application fault tolerance;
• Scale project resources;
• Reduce the cost of services

AccentOS supports Edge Clouds, allowing to:

• Reduce response time by bringing services closer to distributed clients;
• Ensure simple and quick connection of additional cloud nodes;
• Ensure application autonomy when communication with the cloud is lost;
• Reduce the cost of services.

AccentOS supports all OpenStack productivity features:

• Real time KVM – setting parameters;
• NUMA is application distribution;
• CPU-pinning of critical applications;
• Huge pages to speed up operations with network buffers (TLB lookups);
• Hardware virtualization technology to speed up the operation of SR-IOV controllers;
• DPDK technology (OvS DPDK) to accelerate the network exchange of VM applications with a virtual switch;
• OVS is hardware offloading with Mellanox 5.

AccentOS supports OpenStack networking services and running external services:

• OVS + LACP + DVR is distributed management of virtual switches;
• OVN is virtual router management:
• Support for network functions at the virtualization environment level: 802.1Q tagging (VLAN).
• Support for network functions at the virtualization environment level: QoS.
• VM traffic mirroring.
• Prohibition of changing the MAC address for the vNIC of a VM.
• Checking the ability to define virtual functions (VFs) in certain physical functions (PFs), including between network cards from different manufacturers (Intel / Mellanox)
• Continuation of correct operation of the SDN data plane (tenant traffic) in the event of failure of the SDN control plane (controller).
• VXLAN support for creating overlays on top of the DC IP network (underlay), SW VTEP.
• Availability of a DHCP/DHCPv6 server for automatic configuration of IPv4/IPv6 in overlay tenants.
• Support for the SLAAC mechanism for automatic IPv6 configuration in overlay tenants.
• LBaaS is a network load balancer.
• vEPC, GiLAN, VoLTE/vIMS are used functions of mobile operators;
• OpenRAN 5G management is through deployment and management of K8s, Docker, VMs.

AccentOS is compatible with OpenStack Neutron.
OvN supports:

• Services: L2, L3, BGP L3VPN, EVPN, ACL, DHCP, QoS, SFC, IPv6, L2GW;
• OpenFlow protocol and OVS DB-based devices;
• BGP protocol for interoperability with previously released routers.

AccentOS supports classic architecture with services distributed across nodes and hyperconverged (HCI), when computing, networking, storage, and management functions use the same nodes. The use of hyperconverged architecture allows:

• Effectively use all available resources;
• Unify the equipment used and simplify its configuration;
• Reduce the volume of spare parts;
• Simplify cloud scaling.

High availability is ensured by architectural solutions and infrastructure services built into AccentOS:

• Launching the cloud controller and database in the form of a VM with the ability to restart each of the VMs in the event of an accident. (using Zabbix);
• Cloud controller VM clustering and load balancing between VMs;
• Clustering of VM databases (Galera software ensures auto-recovery and integrity of VMs in case of errors and accidents);
• Launching SDS Ceph to ensure disaster-resilience of the cloud storage system (Ceph software provides balancing, uniform load distribution, and automatic data recovery in case of disasters).

Inclusion in the cloud architecture of a module for comprehensive analysis of the operation of cloud components that performs:

• Autostart of a backup node if one of the cloud nodes fails;
• Autostart of client VMs on another cloud node;
• Regular automatic testing of all cloud modules and services;
• Automatic control of network services DNS, NTP, HAProxy and automatic switching to backup routes;
• Automatic recovery of RabbitMQ, Redis, ETCD services if they are detected to be frozen;
• Automatic restart of Neutron, Nova, Cinder, Glance, Celliometer modules if they freeze.

AccentOS includes API OpenStack, Ceph, AccentOS modules, allowing you to create serverless applications (Iaa-Code), projects, PaaS, sandboxes. For this, VMs (KVM), containers (LXC, Docker) can be used, which allows:

• Automatically start and stop projects, VMs or containers at the right time, indicating allocated resources and included applications;
• Launch projects from applications (IaaC);
• Use resources at the right time to achieve results;
• Assign the required amount of resources.

AccentOS (OpenStack) supports working with pods through the ZUN module.
AccentOS (OpenStack) supports working with Kubernetes-aaS through the MAGNUM module.

AccentOS allows automatic generation of a VM image with a set of applications available in the library. Unlike the traditional method of installing applications inside a VM and then preparing a “golden image”. Performing these actions is possible through the AppLevel WEB interface or through the system API.
This feature allows you to:

• Automatically dynamically include applications available in the library into the “golden image” of the guest VM via the API;
• Install an unlimited number of applications simultaneously in a very short time in API mode or selection via WEB;
• Does not require additional testing of the VM after adding applications;
• Consider the cost of added applications;
• Display in the VM template the composition of applications included in the “golden image”.

AccentOS provides:

• Change RAM size on the fly;
• Changing disk (volume) size on the fly;
• Changing the number of VM CPU cores on the fly;
• Changing QoS for CPU on the fly.

AccentOS extends and manages Sanlock functionality for applications running on clusters of shared storage hosts.
Management and coordination are performed through reading and writing blocks on the shared storage system.

AccentOS provides live migration of block devices and file volumes between storage systems:

• With various iSCSI, FC interfaces;
• Between different types of storage systems (SAS, SATA);
• Between different pools;
• Between different storage systems.

Autorecovery module is a system for automatic recovery of the cloud infrastructure, uses information from the monitoring module and from the logging system to inform the administrator about a possible malfunction and auto-recovery of cloud services.
When making a decision, the system uses AI functionality, which at this stage of development identifies single failure errors of cloud services and sends a command via the API to restore them.
As the AI system learns and increases in complexity, it will have:

• functionality for predicting possible faults for the administrator,
• functionality of regularly recurring errors in the functioning of cloud services,
• functionality for identifying and recovering complex errors in the functioning of cloud services.

Application delivery allows you to work on a PC and in VDI simultaneously, which is useful for working with many VDI servers, multimedia, and video conferencing.

• Delivery of Windows applications via a terminal server;
• Delivery of Linux applications through the LXC container;
• Support for Windows applications using Linux – LXC - WINE;
• Deployment tools for delivered applications;
• Application ordering portal.

Windows VM image migration utilities (VmWare) - Windows (OpenStack KVM):

• Sysinternals utilities
• Acronis backup

Linux (VmWare) - Linux (OpenStack KVM) migration utilities:

• virt-v2v https://libguestfs.org/virt-v2v-output-openstack.1.html
• virt-v2v https://access.redhat.com/articles/1353223

Procedure for converting a VmWare VM:

• Launching the conversion utility
• Checking the health of the VM

Procedure for converting a VmWare project:

• Creating a project in AccentOS similar to VmWare with setting up VM networks
• Launching the conversion utility for the project VM
• Checking the functionality of the project in OpenStack

AccentOS provides the following support options.

• Long-term support for AccentOS in 5x9 and 7x24 Moscow time;
• Support for AccentOS Standard and Advanced versions;
•  Level 3 support;
•  Customized level 2 and 3 support;
•  Remote and on-site support;
•  Access to documentation on the developer portal;
•  Appeals through the portal, by mail and telephone;
•  Training of customer specialists in cloud platform and desktop virtualization courses.