Issue #1866 has been reported by IanTurner.
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Feature #1866: Support for specification of multiple servers
http://projects.reductivelabs.com/issues/show/1866
Author: IanTurner
Status: Unreviewed
Priority: Normal
Assigned to:
Category: plumbing
Target version:
Complexity: Easy
Affected version: 0.24.7
Keywords: load balanced, multiple masters, high availability
At the moment it is only possible to tell puppetd about one puppetmaster:
Engaging multiple servers requires load balancing equipment such as that
employed by the reporter of Feature #1557. The simplest (for administrators)
way to address this issue is to enable round-robin server access within puppetd
itself. This is the technique employed extremely effectively in openvpn.
I propose two configuration changes: The "server" directive should accept a
comma-seperated list of servers, and a new "randomserver" boolean directive
indicates how the server list is traversed.
Pseudocode to be executed at the start of each puppet run:
<pre>
# if randomserver and lastserver = NIL
# serverlist <- rotateleft(serverlist, rand(length(serverlist))
# nextserver <- NIL
# trialcount <- length(serverlist)
# loop until nextserver ≠ NIL
# trialserver <- first(serverlist)
# if retrievecatalogok(trialserver)
# nextserver <- trialserver
# else
# server <- rotateleft(server, 1)
# trialcount <- trialcount - 1
# if trialcount = 0
# error("no working servers")
# lastserver <- nextserver
</pre>
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