INUVIKA OPEN VIRTUAL DESKTOP FOUNDATION SERVER

Transcription

1 INUVIKA OPEN VIRTUAL DESKTOP FOUNDATION SERVER ARCHITECTURE OVERVIEW AND SYSTEM REQUIREMENTS Mathieu SCHIRES Version: Published November 9,

2 Contents 1 INTRODUCTION ARCHITECTURE OVERVIEW Servers Roles OVD Session Manager (OSM) OVD Slaveserver OVD Application Server (OAS) OVD Web Access (OWA) OVD Web Application Connect (OWAC) OVD File Server (OFS) Inuvika Enterprise Secure Gateway (ESG) Overview ports and protocols Hyper Text Transfer Protocol (HTTP) Remote Desktop Protocol (RDP) Secure Socket Layer (SSL) Server Communication Security HTTP Return Codes Client Session Establing a Simple User Session Components required vs non-required SYSTEM REQUIREMENTS OVD Session Manager (OSM) OVD Application Server (OAS) OVD Application Server on Windows OVD Application Server on Linux OVD Web Access (OWA) OVD Web Application Connect (OWAC) OVD File Server (OFS) Inuvika Enterprise Secure Gateway (ESG) Inuvika Enterprise Desktop Client OWA - Browser requirements Network Bandwidth Requirements Firewall and ports Page 1

3 List of Tables 1 OVD Components Minimum Browser Requirements Supported Java versions Audio formats supported Page 2

4 1. INTRODUCTION The purpose of this documentation is to provide a high-level description of the architecture typically used in an Inuvika Open Virtual Desktop (OVD) server deployment and the system requirements. OVD is a delivery platform that provides on-demand access to private and public cloud hosted virtual desktops and applications enabling organizations to integrate and seamlessly deliver them as a secure service to users. OVD supports Windows Remote Desktop Services and Linux hosted desktops and application sessions as well as SaaS applications to clients based on Windows, Linux, MacOS, Android and ios platforms as well as web browser clients. Page 3

5 2. ARCHITECTURE OVERVIEW 2.1 SERVERS ROLES A typical Inuvika OVD installation uses several servers with different roles. Some of the server roles are required and others are optional. On smaller deployments, several roles can be configured to run on the same physical server OVD SESSION MANAGER (OSM) This server is the central piece of an Inuvika OVD server farm and is always required. It manages the session establishment from a client, hosts the administration console and provides centralized management of all the OVD server resources. The OSM should be installed prior to any other server. Inuvika provides various Linux packages for installing the OSM on a Linux server. Inuvika does not provide a Windows installer version of OSM OVD SLAVESERVER The OVD Slaveserver is a generic server component that communicates with the OSM. The Slaveserver can be configured to perform one or more different roles (OAS, OFS, OWAC or ESG). During the installation process the configuration file for the Slaveserver is created and stored at /etc/ovd/slaveserver/slaveserver.conf. Restarting the Slaveserver will restart the OVD roles defined for that system. The logs are located on /var/log/ovd/slaveserver/ OVD APPLICATION SERVER (OAS) Inuvika OVD is an application and desktop delivery solution. The OAS in the OVD solution is the server that hosts the end user applications and is accessed from the client using an enhanced Remote Display Protocol. An OVD farm may consist of multiple OAS (Windows and Linux). The user load can be load-balanced among the available application servers to provide better performance. OVD Foundation Server limits the number of OAS servers that can be registered in an OVD farm to one application server (either Linux or Windows). In order to register more than one application server, the OVD farm needs to be upgraded to OVD Enterprise. For further information on upgrading to OVD Enterprise please refer to Enterprise Activation Guide The OAS can be either a Linux system or a Windows system depending on the type of applications or desktop you want to deliver. Of course, you can mix Linux and Windows machines in an Inuvika OVD farm to deliver applications seamlessly from different application servers. OVD Enterprise is required for this capability OVD WEB ACCESS (OWA) This OWA server is responsible for managing browser-based client sessions. In Inuvika OVD, there are 2 types of browser-based sessions. The first type of browser session uses a Java applet within the browser to communicate with OWA. In this case, OWA will install the Java applet if it is not already available in the browser. The second type of browser session requires an HTML5 compliant browser on the client machine but no software will be installed on the client machine. In both cases, the OVD session Page 4

6 is tunneled over an SSL session. In addition, the OWA provides capabilities through a JavaScript API to integrate OVD with other web based applications. Users may decide to use one of the Inuvika Enterprise Desktop Client to create an OVD session instead of using a web browser. In that case, OWA would not be required OVD WEB APPLICATION CONNECT (OWAC) An OVD server may be configured to support Web Application Integration. This could be installed as a standalone server or could be configured on an existing server with different roles. The Web Application Integration provides seamless integration of Web Applications into the OVD environment and a Single Sign On capability This is an optional role and not required if you don t need any of Web Application Integration OVD FILE SERVER (OFS) Within Inuvika OVD, the OFS provides a centralized file management system that enables users to access the same files independently of which application server is used to provide the application. OFS provides a network file system that the OAS Servers are able to access when users are running sessions. It is used to provide access to both user profiles and data folders and files. The OFS is available for Linux based servers only. In a small OVD server farm, the OFS may reside on the same physical machine as the OAS. In larger installations, the OFS would typically be installed on dedicated hardware INUVIKA ENTERPRISE SECURE GATEWAY (ESG) Inuvika OVD uses several ports during the client session, mainly HTTPS (443) and RDP (3389). But in some cases, for example when the user is remote, a firewall would typically be configured to block access to the RDP port. The ESG also can be used to unify access to multiple OVD Application Servers by providing a single point of access to the clients. The ESG is a dedicated server The ESG tunnels all the OVD connections, between the clients and itself, over an HTTPS session. So from anywhere, users that have access to HTTPS (443), will also be able to start an OVD session. 2.2 OVERVIEW PORTS AND PROTOCOLS The following diagram presents an overview of ports and protocols used in Inuvika OVD. When using the HTML5 mode for the OWA, the ESG is not mandatory. Page 5

7 Open Virtual Desktop Anywhere Security Zone Back Office LAN CIFS TCP445 OFS OAS i-rdp - TCP3389 i-rdp - TCP3389 HTTPS - TCP443 Any Device ESG HTTPS - TCP443 WebDAV TCP1113 i-rdp - TCP3389* OVD TCP1111 HTTPS - TCP443 OVD TCP1112 Any Device OWA HTTPS - TCP443 OSM ESG: Enterprise Secure Gateway OSM: OVD Session Manager OFS: OVD File Server OAS: OVD Applications Server OWA: OVD Web Access * When using HTML5 access HYPER TEXT TRANSFER PROTOCOL (HTTP) The base communication protocol used in Inuvika OVD for session establishment and management is HTTP over SSL. This protocol runs over TCP port 443. Inuvika OVD use also HTTP for communication between servers: OVD Session Manager (OSM) to OVD Application Server (OAS) and vice versa. For this usage, the TCP ports 1111 and 1112 (non standard ports) are used. Several components of Inuvika OVD such as the Administration Console and OVD Web Access are purely web-based and use HTTP and the components are accessed via a web browser. HTTP on Wikipedia REMOTE DESKTOP PROTOCOL (RDP) RDP is the remote display protocol used by Microsoft Corp. for their Terminal Services and Remote Desktop Services software. RDP is used by Inuvika Open Virtual Desktop to display desktop and applications on the client machine. RDP uses TCP port RDP on Wikipedia SECURE SOCKET LAYER (SSL) SSL is an cryptographic layer protocol that provide encryption between server and client. SSL is used by Inuvika OVD to tunnel RDP. SSL on Wikipedia SERVER COMMUNICATION Servers communicate by using HTTP based Web Services. The OVD Session Manager listens on TCP port 1111 and Application Servers use port Page 6

8 The OSM identifies an OAS using its Fully Qualified Domain Name (FQDN). OAS Servers only respond to the OSM whose address is stored in their configuration file SECURITY A server is authenticated using the DNS resolution system. When an OAS sends its status, it sends an extra argument called the fqdn. The OSM performs 2 authentication tests and 1 authorization test. FQDN resolution: the OSM resolves the FQDN to get an IP address and tests if it matches the remote server IP. The authentication depends on that result being correct. reverse resolution: resolves the server IP address and tests if it matches the FQDN argument. The authentication depends on that result being correct. This test can be disabled in the administration console using the Disable FQDN checkparameter authorization: the OSM will test whether the FQDN matches one of the Authorized FQDN parameters defined in the administration console HTTP RETURN CODES The OVD Web Services use the standard HTTP return codes to know if the request succeeded. 200 OK : request succeeded 400 Bad Request : request argument not valid 401 Unauthorized : From OSM to OAS: OAS detects if the remote address does not match its configured PSM. From OAS to OSM: OAS is not registered yet or failed authentication. 500 Internal Server Error : The request failed because of an error in the system CLIENT SESSION ESTABLING A SIMPLE USER SESSION The following schema describe the steps for the establishment of an Inuvika OVD user session. In this example, only one OAS is used, the session does not use OVD File Server (internal or external) and the client connects directly to the OSM without using a Gateway. Page 7

9 2.3 COMPONENTS REQUIRED VS NON-REQUIRED The table above presents the required components to build a simple OVD environment. Page 8

10 Component name Required Optional Details OSM Yes - - OAS Yes - - OWA - Yes This is not required if using Inuvika Enterprise Desktop Clients. OWAC - Yes If Web Application Integration is needed OFS Yes - User Profile is needed ESG - Yes If external access to OVD is needed 3. SYSTEM REQUIREMENTS Table 1: OVD Components This section provides all the system requirements for each OVD server role and for a client machine to run an Inuvika Enterprise Desktop Client. It also lists the browsers that are supported and the supported Java versions. 3.1 OVD SESSION MANAGER (OSM) All of the following Operating Systems are supported: RHEL 6.x / Centos 6.x 64 bits RHEL 7.x / Centos 7.x 64 bits Ubuntu server (LTS version only) 64 bits Minimum hardware configuration: CPU: 1 Core (2 Cores recommended) Memory: 1 GB (2 GB recommended) Storage: 20 GB Network: 1 GB NIC (2 for failover) 3.2 OVD APPLICATION SERVER (OAS) OVD APPLICATION SERVER ON WINDOWS All of the following Operating Systems are supported: Windows 2003 R2 SP2 32/64bit with Terminal Services in Application Server mode Windows 2008 R2 SP1 with Remote Desktop Services Windows 2012 / 2012 R2 with Remote Desktop Services Minimum hardware configuration: Page 9

11 CPU: 2 cores (4+ cores recommended) Memory: 2 GB (8+ GB recommended) Storage: 50+ GB. High speed disks with RAID-1 (15krpm, SSDs or SAN disks). Network: 1 GB NIC OVD APPLICATION SERVER ON LINUX All of the following Operating Systems are supported: RHEL 6.x / Centos 6.x 64 bits RHEL 7.x / Centos 7.x 64 bits Ubuntu server (LTS version only) 64 bits Minimum hardware configuration: CPU: 2 cores (4+ cores recommended) Memory: 2 GB (8+ GB recommended) Storage: 50+ GB. High speed disks with RAID-1 (15krpm, SSDs or SAN disks). Network: 1 GB NIC 3.3 OVD WEB ACCESS (OWA) All of the following Operating Systems are supported: RHEL 6.x / Centos 6.x 64 bits RHEL 7.x / Centos 7.x 64 bits Ubuntu server (LTS version only) 64 bits Minimum hardware configuration: CPU: 1 core (2 cores recommended) Memory: 1 GB(2 GB recommended) Storage: 20 GB Network: 1 GB NIC (2 for failover) 3.4 OVD WEB APPLICATION CONNECT (OWAC) All of the following Operating Systems are supported: RHEL 6.x / Centos 6.x 64 bits RHEL 7.x / Centos 7.x 64 bits Ubuntu server (LTS version only) 64 bits Minimum hardware configuration: Page 10

12 CPU: 1 core (2 cores recommended) Memory: 1 GB (2 GB recommended) Storage: 20 GB Network: 1 GB NIC (2 for failover) 3.5 OVD FILE SERVER (OFS) All of the following Operating Systems are supported: RHEL 6.x / Centos 6.x 64 bits RHEL 7.x / Centos 7.x 64 bits Ubuntu server (LTS version only) 64 bits Minimum hardware configuration: CPU: 2 cores (4 cores recommended) Memory: 2 GB (4 GB recommended) Storage: 100+ GB. High speed disks with RAID-1 (15krpm, SSDs or SAN disks). Network: 1 GB NIC 3.6 INUVIKA ENTERPRISE SECURE GATEWAY (ESG) All of the following Operating Systems are supported: RHEL 6.x / Centos 6.x 64 bits RHEL 7.x / Centos 7.x 64 bits Ubuntu server (LTS version only) 64 bits Minimum hardware configuration: CPU: 2 cores (4 cores recommended) Memory: 2 GB(4+ GB recommended) Storage: 20+ GB. Network: 1 GB NIC 3.7 INUVIKA ENTERPRISE DESKTOP CLIENT EDC clients are provided for Windows, Linux or Mac platforms. The client is a standalone application which can be used instead of browser based access to provide a tighter integration with the platform on which it is installed through seamless application and local desktop integration. Operating System: Linux Desktop Page 11

13 Apple OSX and (Java virtual machine must be installed in advance) Windows XP, 7, 8.0 and 8.1 Minimal hardware configuration: 1 CPU Core 1 GB RAM Disk space: 100 MB 3.8 OWA - BROWSER REQUIREMENTS Minimum Browser Requirements: Table 2 below describes the minimum browser requirements for the Operating Systems supported Operating Internet System Explorer Firefox Chrome Safari Windows v11 and higher v16 and higher v24 and higher - MacOS - v16 and higher v24 and higher v7 and higher Linux - v16 and higher v24 and higher - Java versions: Table 2: Minimum Browser Requirements OWA supports Java with the 32bits and 64bits versions. OpenJDK 7 and Operating System Java SE 7.X Java SE 8.X later Windows MacOS Linux Table 3: Supported Java versions HTML5 Audio Formats Table 4 below describe the audio formats supported by different web browsers Browser Operating System Audio formats WAV PCM Ogg Vorbis Google Chrome All supported Yes 9 Internet Explorer Windows No No Mozilla Firefox All supported Safari OS X 3.1 Manual install Table 4: Audio formats supported Page 12

14 3.9 NETWORK BANDWIDTH REQUIREMENTS The Network bandwidth required depends on the usage characteristics and the applications being served. Applications such as flash animation, streaming videos or 3D usage consume a lot of bandwidth. The screen resolution and colour depth are also a factor in determining the bandwidth consumption. Inuvika recommends a minimum of 128kbps per user for planning purposes. A proof of concept environment should be used to determine the required bandwidth based on actual usage scenarios FIREWALL AND PORTS OVD requires the following ports to be open for different servers roles. Firewall rules need to be added for the incoming and outgoing traffic. OVD Session Manager: 80 (HTTP): for communication with a browser for the OVD Administration Console 443 (HTTPS): for communication with a browser for the OVD Administration Console 1111 (HTTP): for communication with an OVD Application Server OVD Web Access: 80 (HTTP): for communication with an end user s browser 443 (HTTPS): for communication with an end user s browser OVD Application Server: 1112 (HTTP): for communication with the OVD Session Manager 3389 (RDP): for communication with an end user s browser (with the Java access) or the OVD Enterprise Client OVD File Server: 1112 (HTTP): for communication with the OVD Session Manager 1113 (HTTP): for communication with an OVD Application Server 445 (CIFS): for communication with an OVD Application Server Inuvika Enterprise Secure Gateway: 1112 (HTTP): for communication with the OVD Session Manager 443 (HTTPS): for communication with an end user s browser 3389 (RDP): for communication with an OVD Application Server Page 13