[libvirt] [PATCH] 0/8 logging infrastructure for libvirt[d]
Daniel Veillard
veillard at redhat.com
Mon Dec 22 13:01:38 UTC 2008
On Wed, Dec 17, 2008 at 03:57:37PM +0000, Daniel P. Berrange wrote:
> On Wed, Dec 17, 2008 at 04:06:38PM +0100, Daniel Veillard wrote:
> >
> > In practice
> > export LIBVIRT_DEBUG=1
> > export LIBVIRT_LOG_OUTPUTS="0:file:virsh.log"
> > and then running virsh will accumulate all logging to the virsh.log
> > file in the current directory.
>
> This looks great.
Okay, I have now commited the updated patches, there is still one
augeas file I need to update, some test to be fixed because the output
is slightly different now and increase documentation.
> > One thing which I feel is somewhat incomplete is that it's impossible
> > to remotely get debugging output from the libvirt daemon serving the
> > requests. Currently all logs are also accumulated in a cyclic logging
> > buffer, I would associate a dump function later to be hooked for example
> > to a signal handler in the daemon. But I'm unsure we should allow
> > dumping logging information to the remote end, probably not the whole
> > set.
>
> I've been wondering whether we should create an explicit tool for
> admin of the libvirtd daemon itself. Basically something for querying
> state, and performing operations wrt to the daemon for things outside
> the scope of the libvirt API. For example, something to get details of
> active client connections, and forceably drop a client. Being able to
> have an API to configure the log level / setup of the dameon would be
> a useful thing. We can easily layer this kind of thing in as another
> RPC protocol in parallel with the existing protocol, and have simple
> CLI tool libvirtd-admin. SQUID has a 'squidclient' tool and a CGI
> script for administration of the server itself.
You envision that configuration tool to be able to work remotely ?
Why not make that part of libvirt API, basically it's not that different
from current Node operations, or maybe isolate them in a separate
include header...
Daniel
--
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