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After configuring redundancy environment using MCCS, some failures might occur.

This chapter will explain how MCCS detects the failure and administrates after failure or failover is done. 

(In the following example, the operating server as 'Active', standby server name as 'Standby' is registered on MCCS.)

 

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    • Single Network Switch Fault

      When failure occurs in network switch connected to Public Network where it is configured by single network switch, all the resources in active and standby server will be taken offline, resources where failure occurs will show as 'fault'.

      [Figure] Failure in Network Switch    

  1. Network switch failure can be checked on MCCS log, OS System log. If failure occurs in service network connection, server operator should check on the TCP/IP of server, physical connection check on the service network through ping test.
  2. 자동으로 장애 표시를 제거하려면 그룹 속성의 AutoFaultClearTime에 0보다 큰 값을 설정하면 됩니다.
  3. Please get the supports regarding the recovery of Network switch failure through manufacturer.

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To check of the disk supports SCSI-3PR function, PR type can be checked using scsicmd.cmd command.

When cannot find sg_scan.sh or sg_persist.sh pass

Check if the command exist in $MCCS_HOME/bin.


When interlock with shared disk

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