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What are you people using to automatically monitor an LVS cluster
(the real servers, not the director?)
I have just installed ldirectord from the ultramonkey project and
it works as described, but I have a problem to solve:
I have 4 realservers which run http services, named w1, w2, w3, w4.
ldirectord manages them nicely, i.e. removes/adds via ipvsadm if
a server is turned off/on.
If all 4 are down, it switches to the fallback server (on the director
itself).
I have a special requirement, however: server w1 is the dbms server,
and if this one is down, it must be treated as if all realservers are
down, because the other realservers cannot function properly without w1
ldirectord.cf does not seem to have such a overriding feature which gives
one realserver special importance.
Should I modify ldirectord (which is written in Perl and not very large)
or is there another convenient solution for my problem?
Alois
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