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RMS V2.5.2 Redundant Setup

Multiple service managers can be installed for redundant operation. However, only one service manager may be supplied with data at a time.

• The load balancer has to deliver the data either to one or to the other server.

• Distributing the data to multiple servers is not supported.

Behavior:

  • The inactive service manager automatically switches to passive mode as soon as the other service manager has activated.
  • The synchronization is handled via the "ServiceInstances" table in the database.
  • The feature does not have to be activated via an entry in the config file.
  • The activation or deactivation of the service manager is logged in the audit trail and an email is sent to the system recipient.
  • If the service manager has switched to passive status, the GUI can no longer be operated, it is redirected to an error page.
  • The passive service manager automatically switches back to active when it receives data from the web service but it remains passive for at least 5 minutes.
  • Switching offline means: All actuators except the system and web service actuators are terminated.

Behavior when both instances are served with data (e.g. because the load balancer constantly changes target):

  • The active instance changes every 5 minutes.
  • Data that are sent to the passive instance are lost.

To activate the redundant Setup, the following actions need to be completed on both servers:

Step 1 Open the service Manager folder and edit the file "RmsServiceManager.exe":
redundant setup 1
Step 2 Search for "RmsServiceManager.my.mySetting" and change follow string from false to true and save the file:
setting name="RedundancyMode" serializeAs="String">
true
clip0131
Step 3 Change the Server to Active / Passive mode!

Created: 09.07.2024