fence_brocade is an I/O Fencing agent which can be used with Brocade FC switches. It logs into a Brocade switch via telnet and disables a specified port. Disabling the port which a machine is connected to effectively fences that machine. Lengthy telnet connections to the switch should be avoided while a GFS cluster is running because the connection will block any necessary fencing actions. After a fence operation has taken place the fenced machine can no longer connect to the Brocade FC switch. When the fenced machine is ready to be brought back into the GFS cluster (after reboot) the port on the Brocade FC switch needs to be enabled. This can be done by running fence_brocade and specifying the enable action http://www.brocade.com IP Address or Hostname Login Name Login password or passphrase Force Python regex for command prompt SSH connection Physical plug number, name of virtual machine or UUID TCP/UDP port to use for connection with device Forces agent to use IPv4 addresses only Forces agent to use IPv6 addresses only Script to retrieve password Identity file for ssh SSH options to use Fencing Action Verbose mode Write debug information to given file Display version information and exit Display help and exit Separator for CSV created by operation list Test X seconds for status change after ON/OFF Wait X seconds for cmd prompt after issuing command Wait X seconds for cmd prompt after login Wait X seconds after issuing ON/OFF Wait X seconds before fencing is started Count of attempts to retry power on