[scyld-users] Re: [Support] log messages from nodes

[Donald Becker]

On Wed, 12 Mar 2003, Ron Cresswell wrote:

> quick question - what happens to system messages on the compute nodes that
> would normally be directed to /var/log/messages? Are they directed anywhere
> or are they lost?

It depends on the configuration.
By default
  - the boot messages are stored in
     /var/log/beowulf/node.<NODE>
  - application 'syslog' message are discarded
  - kernel messages are retained in the kernel message queue.  They may
    be viewed with 'bpsh <NODE> dmesg'
  
You can configure the system to
   log messages to /var/log/messages on each node
or
   forward messages to the master for combined logging
This is done in series 28 by setting up an additional script in
   /etc/beowulf/init.d

We have the structure for a RFC3164 syslog facility in the current node
control program, and are considering adding an integrated user-level
forwarding feature in the future.  This would avoid a duplicate daemon
running on each node.  (Few or no compute node daemons is one of the
performance and reduced complexity advantages of Scyld Beowulf.)
  Would you find this useful?
  What are your desires/requirements?

-- 
Donald Becker				becker at scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Scyld Beowulf cluster system
Annapolis MD 21403			410-990-9993