Discussion:
Carp questions
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Mark Saad
2018-10-11 11:25:30 UTC
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All
I am running into two carp questions I can’t easily find an answer too . Before I go off and try to break stuff I figured i’de ask if anyone has tried this and has any pointers .

Issue one : adding more user defined bits to the custom carp Mac . So this is not all that common but in some cases you can have two pairs of carp servers with overlapping vhids that eventually cause trouble with each other. Has anyone tried this ? I am ok with random-ish mac’s like how crossbow does this on illumos .

Issue two: one way carp fail over . For example node a and b are carp partners . Node a crashes node b takes over but there is no automatic fail back when node a recovers . I can’t find a way to do this in 11.x . I am stumped anyone have any built into magic for this ?

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Mark Saad | ***@longcount.org
Trond Endrestøl
2018-10-11 11:58:48 UTC
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Post by Mark Saad
I am running into two carp questions I can’t easily find an answer
too . Before I go off and try to break stuff I figured i’de ask if
anyone has tried this and has any pointers .
Issue one : adding more user defined bits to the custom carp Mac .
So this is not all that common but in some cases you can have two
pairs of carp servers with overlapping vhids that eventually cause
trouble with each other. Has anyone tried this ? I am ok with
random-ish mac’s like how crossbow does this on illumos .
Maybe someone else can answer this.
Post by Mark Saad
Issue two: one way carp fail over . For example node a and b are
carp partners . Node a crashes node b takes over but there is no
automatic fail back when node a recovers . I can’t find a way to do
this in 11.x . I am stumped anyone have any built into magic for
this ?
I run doubly DHCP servers using CARP, and I have
net.inet.carp.preempt=1 in /etc/sysctl.conf on the master only.
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Trond.
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