Re: polling consoles

Yea I see.  I've modified my conserver daemon to send notifications of
these conditions.  I need this condition to tell administrators that the
managed device is down.  Of course I use SNMP traps to do this.  I
pretty much all the time know what state any console is in.

]


On Tue, 2002-10-22 at 11:41, Corey Hirschman wrote:
> You seem to have a greater problem than I do. :)
> 
> Once the terminal server is back up, I can do console <node name>,
> conserver then realizes the connection is really not up and does a reset
> to bring it up.  After that I am good to go.  The problem is that I have
> to do that to reestablish the connection, or restart conserver.  It
> would be better (at least I think so) if conserver did this
> automatically at a time specified in minutes on the command line when
> conserver is launched or perhaps in the conserver.cf file.  This way,
> any console messages will continue to be logged automatically after only
> a short interruption.
> 
> 
> On Tue, 2002-10-22 at 11:34, cfowler wrote:
> > Here is a chnage I made to console.c form 7.2.3  It needs a tweak but it
> > clears up the garbage on connection loss.
> > 
> > 
> > Index: console.c
> > ==================================================================
> > RCS file: /u01/ENS/CVS/outpost/src/conserver/console/console.c,v
> > retrieving revision 1.2
> > diff -u -r1.2 console.c
> > --- console.c   16 Oct 2002 18:00:55 -0000      1.2
> > +++ console.c   22 Oct 2002 15:32:15 -0000
> > @@ -1113,11 +1113,9 @@
> >  
> >         /* anything from socket? */
> >         if (FD_ISSET(fileFDNum(pcf), &rmask)) {
> > -           if ((nc = fileRead(pcf, acMesg, sizeof(acMesg))) == 0) {
> > -               if (justProcessedUrg) {
> > -                   printf("\n");
> > -                   Error("lost connection");
> > -               }
> > +           if ((nc = fileRead(pcf, acMesg, sizeof(acMesg))) <= 0) {
> > +               printf("\n");
> > +               Error("lost connection");
> >                 break;
> >             }
> >             if (fStrip) {
> > @@ -1141,6 +1139,9 @@
> >      c2cooked();
> >      if (fVerbose)
> >         printf("Console %s closed.\n", pcMach);
> > +
> > +    printf("\n");
> > +
> >      return 0;
> >  }
> >  
> > 
> > 
> > On Tue, 2002-10-22 at 10:46, Corey Hirschman wrote:
> > > I was wondering if there is any way for conserver to test the connection
> > > between itself and the consoles it is aware of.
> > > 
> > > We run into a problem that if a terminal server goes down unexpectedly,
> > > conserver will not realize that the TCP connections have been broken and
> > > will keep them marked as up.  The terminal server, once back up, no
> > > longer knows about the connections so none of the console messages are
> > > put into the logs, until conserver is either restarted or an explicit
> > > connection is made to each machine.
> > > 
> > > A similar problem occurs if one of the nodes in our cluster crashes. 
> > > Once it is fixed and brought back up, conserver does not kill the bad
> > > connection and reestablish a connection with the node until an explicit
> > > connection is made to the node.
> > > 
> > > I know this popped up on the list about a year ago and at that time
> > > there was nothing that could be done within conserver.  I was wondering
> > > if there is now a way to monitor connection status and if not get
> > > suggestions as to how to best implement it.
> > > 
> > > Corey
> > > 
> > > 
> > > 
> > > 
> > > _______________________________________________
> > > users mailing list
> > > users@conserver.com
> > > https://www.conserver.com/mailman/listinfo/users
> > > 
> > > 
> > 
> > 
> > 
> 
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