Bob McClure <> wrote: > I have several servers running CARP in an active/passive configuration. > Currently the only way that my scripts can determine if a given node is > master is by > periodically executing ifconfig carp1 and grepping for MASTER. Although this > works, > it's kind of clunky. > > Is there a better way to detect the CARP status of a server?
If you set sysctl net.inet.carp.log=2, you'll get a log entry every time the interface state changes. You can configure a handler (e.g. a script) in /etc/syslog.conf that responds to such events. If you're a C programmer, you can also use the kqueue(2) API with EVFILT_NETDEV. Then you will get a notification each time an interface link goes down or comes up. See the kqueue(2) manual page for details. Finally, a third possibility is to use devd(8). See the devd.conf(4) manual page for details. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "Python is an experiment in how much freedom programmers need. Too much freedom and nobody can read another's code; too little and expressiveness is endangered." -- Guido van Rossum _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-cluster To unsubscribe, send any mail to "[EMAIL PROTECTED]"
