Gugliemo, Ldirectord has various different health checking methods.
For a simple TCP based service you could use the 'connect' check i.e. Can I do a TCP open on that port? For UDP you would probably just use a ping check as it is connectionless. The various methods are pretty well documented in the man page. On 23 April 2013 16:42, Guglielmo Abbruzzese <g.abbruzz...@resi.it> wrote: > Hi, > as far as you know where can I find a detailed description/documentation > about how ldirectord polls the realservers in order to realize if the node > should be actually removed from the cluster? > > For sure, " ldirectord monitors the health of the real servers by > periodically requesting a known URL and checking that the response contains > an expected response. If a real server fails then the server is removed and > will be reactivated once it comes back on line.". > > But what if the real servers implement a custom tcp or udp service? > In case of a tcp persistent connection, what if there is no data flow for a > while (shall I rely just on the 'persistent' timeout)? > And what about a cistom udp server? > > Is there a way to use tcpdump in order to detect such evidence? > > Thanks in advance for your advice, > Regards > G. > > > > _______________________________________________ > Please read the documentation before posting - it's available at: > http://www.linuxvirtualserver.org/ > > LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org > Send requests to lvs-users-requ...@linuxvirtualserver.org > or go to http://lists.graemef.net/mailman/listinfo/lvs-users -- Regards, Malcolm Turnbull. Loadbalancer.org Ltd. Phone: +44 (0)870 443 8779 http://www.loadbalancer.org/ _______________________________________________ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
