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What version of ldirectord are you using. My version 1.77.2.11 already
has the correct code in check_connect.
my $result = &ld_open_socket($$r{server}, $port,
$$v{protocol});
if ($result == 0) {
# Failure to open the socket
alarm(0);
die("Couldn't open socket to
$$r{server}:$port");
} else {
&ld_debug(3, "Connected to $1 (port $port)");
}
alarm 0; # Cancel the alarm
Graham
On Tue, 2005-09-20 at 17:03, Lloyd Brown wrote:
> Hey everybody,
>
> I'm trying to use lvs and ldirectord to balance ssh access to
> interactive nodes on an HPC cluster (see
> http://marylou.byu.edu/m4/marylou4.htm). I have an issue, though.
> Since there's no special module to check ssh, I'm just trying to use the
> checktype=connect to check if the daemon is running on the realservers.
> While it seems to work if either the daemon is not responding to the
> socket (daemon crash, kernel panic, etc.), or if the interface on the
> realserver is down, the real problem comes when the system is
> functioning correctly, and the interface is up, but I've deliberately
> shut down the daemon. In this situation, the socket connect attempt
> will fail, but will return immediately, not timeout. The code in the
> check_connect subroutine seems to operate on the assumption that it will
> time out. I've prepared a small patch, and I'm attaching it, but wanted
> to ask for more input, especially since I'm not very good at perl. If
> anyone wants to clean up my modifications, feel free.
>
> Thanks,
> Lloyd Brown
> BYU Supercomputing
> http://marylou.byu.edu
>
> ______________________________________________________________________
> --- original/ldirectord 2005-09-20 08:54:00.000000000 -0600
> +++ patched/ldirectord 2005-09-20 09:54:14.000000000 -0600
> @@ -2000,6 +2000,8 @@
> my $sock = &ld_open_socket($$r{server}, $port, $$v{protocol});
> if ($sock) {
> close($sock);
> + } else {
> + die(); #socket attempt failed immediately (not timeout)
> }
> &ld_debug(3, "Connected to $1 (port $port)");
> alarm 0; # Cancel the alarm
>
> ______________________________________________________________________
> _______________________________________________
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> or go to http://www.in-addr.de/mailman/listinfo/lvs-users
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