On Fri, 2006-06-30 at 15:53 +0200, Michel Stam wrote:
> Weekly status update;
> Still having some problems when the cluster management node goes down.
> For some reason the agent doesn't properly respond anymore after this.
> From a few traces it seems that the agent fails to auto-reregister with
> the snmpd daemon periodically (which it is supposed to do) and the snmpd
> daemon gives up on it. At the very least, SNMP requests don't seem to be
> forwarded. I need a little more time on that, perhaps I'll try with a
> more recent net-snmp (I'm using 5.1.3.1).
> Other than that I've added SNMP traps, which are now sent whenever the
> agent loses or regains connection with either the cluster or the mysqld
> daemon itself. Also a simple trap is sent upon startup or shutdown.
> Agent daemonizes too (or not, at the option of the admin).
great, this looks like a useful feature for people. with the
auto-reregister working this would mean that people can know when their
monitor can no longer talk to the cluster (or has crashed, caught on
fire etc).
> Code seems mostly clean (I am adding a couple of headers on functions so
> they can be more easily reused), and a rudimentary Makefile is in place
> (I haven't looked into autoconf/automake which would be fairly useless
> if it will end up in the MySQL tree at some point in the future). No
> testing as yet on any other version than 4.1.18.
great!
> Workarounds necessary:
>
> * Missing include files for mysql/ndb/mgmapi. It seems that at least
> ndb_global.h and ndb_net.h are not installed in mysql/ndb when
> executing 'make install'. See ndb/include/Makefile.am in the
> source tree for 4.1. Unfortunately, mysql/ndb/ndb_types.h, which
> is included by mysql/ndb/mgmapi/mgmapi.h #includes ndb_global.h,
> which will cause compiles to fail. Any reason why
> ndb/include/Makefile.am lists ndb_global.h and ndb_net.h under
> noinst_HEADERS? A workaround is copying both from the sourcetree
> (ndb/include) into INSTALLPATH/mysql/ndb
> * mysql/ndb/mgmapi/mgmapi.h defines 2 const values, namely const
> struct Ndb_Mgm_Error_Msg ndb_mgm_error_msgs[] and const int
> ndb_mgm_noOfErrorMsgs. If mgmapi.h is included in 2 or more
> sourcefiles in a project, it will cause the link stage to fail
> with a multiple definition error unless -zmuldefs is specified at
> linkstage
> * In mysql/ndb/mgmapi/mgmapi.h ndb_mgm_event_category and
> ndb_mgm_clusterlog_level are two enums. However; strict C checking
> does not allow for these types to be used without the 'enum'
> keyword prepended. A workaround is typedef-ing both to 'int' prior
> to including the mgmapi.h
file bugs for these and we'll investigate.
> I can provide a beta (it is properly running on my system, though I'm
> still testing it). Let me know where I should send it to.
great! just putting it up on the net somewhere is fine, i can pull it
from there.
if you'd prefer it privately, we can organise something for that (or
rather, I get to find out where the uploads to ftp.mysql.com or
somewhere go).
--
Stewart Smith, Software Engineer
MySQL AB, www.mysql.com
Office: +14082136540 Ext: 6616
VoIP: 6616@stripped
Mobile: +61 4 3 8844 332
Jumpstart your cluster:
http://www.mysql.com/consulting/packaged/cluster.html
Attachment: [application/pgp-signature] This is a digitally signed message part signature.asc
Attachment: [application/pgp-signature] This is a digitally signed message part signature.asc
