Configuring high availability in BMC Service Resolution

You can achieve high availability in BMC Service Resolution by performing certain simple configurations.

The following topics are provided:

High-availability architecture in BMC Service Resolution

Refer to the following architecture diagram to understand the architecture.

Configurations/Setup required to enable failover

• Ensure that two BMC TrueSight instances are installed on separate hosts. See  Installing from the BMC TrueSight online documentation.
• Configure the Cells of the two BMC TrueSight instances in HA mode. See To configure cells in HA mode.
• Configure the Cells of the two BMC TrueSight instances to propagate events using the One Of policy. See Creating a new propagation policy from the BMC TrueSight online documentation.

Failover scenarios

The following diagrams depict how failover is achieved when any one of the component fails:

• If Service Desk Integration Gateway goes down; failover is achieved because the event policy is configured to use the propagate to One Of option.
  
• If the Cell goes down on BMC TrueSight server: Failover is achieved because the Cells are configured to be in HA mode.
  
• If BMC TrueSight server goes down: Failover is achieved because the Cells are configured to be in HA mode.
  

Partial high-availability architecture

Refer to the following architecture diagram to understand the partial high-availability architecture in BMC Service Resolution.

In the partial high-availability architecture, there is no BMC TrueSight stand by server. Therefore, when the Primary server goes down, failover is not achieved.

However, failover can be achieved in the following scenarios:

• When the Cell 1 goes down, requests are routed through Cell 2. Failover to Cell 2 is achieved because the cells are configured to be in HA mode.
• When the SDiG 1 goes down, requests get routed through SDIG 2. Failover to SDIG 2 is achieved because the event policy is configured to use the Propagate to One of policy option.

To configure cells in HA mode

1. On the Primary Infrastructure Management server, edit the mcell.dir file and add the following entries:
   1. Add an entry for the Primary server as follows:
      

      cell Primary  mc  Primary:1828 Secondary:1828

   2. Add an entry for the Secondary server as follows:
      cell Secondary mc Primary:1828 Secondary:1828
   3. Add entries for Primary and Secondary gateways as follows:
      

      gateway.ibrsd IBRSD  mc Primary:3115

      gateway.ibrsd IBRSDSecondary mc Secondary:3115

2. On the Secondary Infrastructure Management server, edit the mcell.dir file and add the following entries:
   1. Add an entry for the Secondary server as follows:
      

      cell Secondary mc  Primary:1828 Secondary:1828

   2. Add an entry for the Primary server as follows:
      

      cell Primary  mc Primary:1828 Secondary:1828

   3. Add entries for Primary and Secondary gateways as follows:
      

      gateway.ibrsd IBRSD  mc Primary:3115

      gateway.ibrsd IBRSDSecondary mc Secondary:3115

3. Restart JServer process.