JGroups Protocol FD SOCK

External

• User Manual FD http://www.jgroups.org/manual/index.html#FD_SOCK
• JGroups Wiki http://community.jboss.org/wiki/JGroupsFDSOCK
• http://community.jboss.org/wiki/FDVersusFDSOCK

Internal

• JGroups

Overview

FD_SOCK is a failure detection protocol based on opening a direct TCP/IP socket to a neighbor.

Failure Detection

Also See

JGroups Events - Failure Detection

Recommendations

FD_ALL Recommendations

Configuration

JGroups standalone:

    <FD_SOCK start_port="${jboss.jgroups.udp.fd_sock_port:54200}"/>

VIEW_CHAGE

FD_SOCK reports view changes in DEBUG mode; this behavior can be quite useful when debugging group membership issues:

[2016-02-29 09:25:24,111] [DEBUG] [ {555095}] [org.jgroups.protocols.FD_SOCK] (Cluster Dispatch) -- VIEW_CHANGE received: [hos01/tcp, hos02/tcp]