Configuring Failover Server

"Downtime" is a threat to every enterprise, which would affect productivity.  Desktop Central offers "Failover Service", to overcome these challenges. You can configure a secondary server, which will act as a standby server, whenever the primary server fails. This will ensure, that the desktop management system is not aborted due to any hardware surprises. This document will explain you the steps involved in configuring the failover service. This feature is supported for computers running Windows XP and later versions.

Prerequisites

You need to ensure that the below listed criteria are met, before configuring the failover service:

Failover is supported only for MSSQL databsae. You should have purchased license for failover and uploaded it in the product. You need to ensure that the database, patch store and the software repository are installed in a remote computer. This will ensure that the database, patch store and software repository are not affected, when one of the server is down. You should also ensure that the IP Address, that you configure for the primary server and the secondary server is "Static". So, that the communication will reach the appropriate static IP address.

Ensure that the Desktop Central's primary server, secondary server and the remote database (if any) belongs to a same domain and are located in a same subnet.  If you have configured NAT settings to redirect all communications to a local IP, you will have to ensure that the redirected communications reach the virtual IP address.

 Configuring Failover Server

You can configure failover service from here: Desktop Central web console -> Admin - > Failover Server. You will have to specify the Primary and Secondary Server's IP address. You will have to provide a virtual IP address, which could actually be updated to the agents. Every communication from the agent, distribution server will reach the virtual IP. If you have configured NAT settings to redirect all communications to a local IP, you will have to ensure that the redirected communications reach the virtual IP address.

All request that reaches this virtual IP will be redirected to the primary server, whenever the primary server is not reachable, the communications will be taken to the secondary server. The secondary server will periodically sync all the data from the primary server, so that it is up-to-date. You can also configure settings to receive mail notifications, whenever one of the server is down, or not reachable.  Follow the steps mentioned below to configure Failover server:

  1. Clone Server components to secondary server
  2. Configuring Secondary Server
  3. Activate Secondary Server

Clone Server components to secondary server

Perform the following steps on the computer, where (Primary) Desktop Central server is installed:

  1. Stop Desktop Central server
  2. Navigate to <Installation_Directory>/ManageEngine/DesktopCentral_Server/bin
  3. Execute "Clone_Primary_Server.bat", to clone and create a zip folder which contains the server components.
  4. A new zip file "Product.zip", will be created in the "<Installation_Directory>/ManageEngine/DesktopCentral_Server>" folder.

Configure Secondary Server

Ensure that the the secondary server do have permissions to synchronize the data from the primary server and vice versa

You will have to enable the following settings:

The below mentioned steps should be performed on the primary server first and the same should be performed on the secondary server during activation.

Steps for Sharing:

  1. Right click on the folder choose Sharing tab
  2. Click Advanced Sharing
  3. Enable Share this Folder
  4. Specify the name as DesktopCentral_Server
  5. Click Permissions
  6. Click Add
  7. Choose Object Types
  8. Enable Computers,
  9. Click OK
  10. Under Enter Object Name, specify the secondary server name and the user name with Admin privileges
  11. Click share permission and select user and computer and ensure that Full Control is enabled

  12. Click OK, to complete the process.

     If Desktop Central server is installed in Windows 10 or Windows Server 2012 R2, you will have to ensure that the permissions are modified here, (Right click) Desktop Central folder -> Properties -> Security -> Edit Permissions -> Edit -> Add (add the name of the secondary server).

Activate Secondary Server

Perform the below mentioned step on the computer where the Secondary server is installed:

  1. Download the Configure_Failover_Server.bat from the product : Desktop Central web console -> Admin -> Failover Server -> and execute it .
  2. Repeat the steps for sharing, as mentioned above on the secondary server and ensure that you provide name of the computer, where the primary server is installed, in step 10.

You can now see that the server components are replicated to the secondary server.

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