Re: [hobbit] hobbitd coredumping and purple trends

[Henrik Stoerner <henrik (at) hswn.dk>]

On Fri, Apr 01, 2005 at 05:22:42PM -0500, Deal, Richard wrote:
> My hobbitd is core dumping every so often and less often but still
> occasional the trends column turns purple.

hobbitd crashing - that's bad.

Could you run the core-dump through gdb and send me the call-trace.
Do this:

    $ gdb ~hobbit/server/bin/hobbitd /tmp/core-file-from-hobbitd
    [messages from gdb]
    gdb> bt

and send me the output from that "bt" command.


> Looking through the makefile the only oddity is MAXMSG=32768
> Were my old BBd was set to #define MAXLINE  11264

Shouldn't cause any problems, it just means Hobbit will accept larger
messages than your BB setup.

> > more bb-display.log 
> 2005-04-01 15:47:59 Whoops ! bb failed to send message - timeout
> 2005-04-01 16:02:59 Whoops ! bb failed to send message - timeout
> 2005-04-01 16:03:00 connect to bbd failed - Connection refused

Probably a result of hobbitd being down.


> I have a lot of these errors in larrd-data.log from various hosts.
> 2005-04-01 17:17:53 RRD error updating
> /local/packages/IT/HOBBIT/hobbit/data/rrd/ray1.tigr.org/netstat.rrd from
> 172.17.10.20: expected 12 data source readings (got 16) from

The "netstat" and "vmstat" RRD files from LARRD are not compatible
with Hobbit. Do a

   find ~hobbit/data/rrd -name netstat.rrd | xargs rm -f

to delete the old files.


> 005-04-01 17:18:10 RRD error updating
> /local/packages/IT/HOBBIT/hobbit/data/rrd/IGR51RRTB.tigr.org/temperature
> .module_6_asic-.rrd from 172.17.10.16: illegal attempt to update using
> time 1112393889 when last update time is 1112393889 (minimum one second
> step)

This is a bit more tricky. It means that the same RRD file was being
updated by two status messages within one second - that normally
should not happen, because a status is sent every 5 minutes. It can
happen if you have two hosts reporting the same hostname (one of them
would be the 172.17.10.16 IP you have in that error message).


Regards,
Henrik