[jboss-jira] [JBoss JIRA] (JGRP-1855) FD_HOST: host failure detection protocol

[Bela Ban (JIRA)]

     [ https://issues.jboss.org/browse/JGRP-1855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban resolved JGRP-1855.
----------------------------

    Resolution: Done


Tested on master and 3.4 branches, with VirtualBox instances. To fix bugs found during QE testing, let's create a new issue rather than reopening this one.

> FD_HOST: host failure detection protocol
> ----------------------------------------
>
>                 Key: JGRP-1855
>                 URL: https://issues.jboss.org/browse/JGRP-1855
>             Project: JGroups
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 3.4.5, 3.5
>
>
> A new protocol similar to FD_PING which detects entire host failures and suspects all members on the failed host.
> Features are:
> * Contrary to FD_PING which uses a ring structure, FD_HOST will have everyone ping everybody else (similar to FD_ALL)
> ** A structure keeps track of hosts (IP addresses) and members on those hosts
> *** Example
> ||192.168.1.2||192.168.1.3||192.168.1.5||
> |A,B,C|D,E,F|X,Y,Z|
> * We sort the members lexically and the *first* member runs a ping against each other IP address, e.g. A pings 192.168.1.3 and 192.168.1.5, D pings 192.168.1.2 and 192.168.1.5 etc
> * The ping command itself is pluggable and can be a Java class (e.g. using {{InetAddress.isReachable()}}, a script or a command (e.g. {{/sbin/ping}}).
> * When an entire host is suspected, we suspect *all* clusters members on it
> ** Example: if B suspects 192.168.1.5, members X, Y and Z are suspected and removed from the view



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