On Thu, 28 Mar 2013, David Lang wrote:
On Wed, 27 Mar 2013, Jiann-Ming Su wrote:
Is there a version of rsyslog that can properly use distributed filesystems
like GlusterFS? For example, I have two nodes each running rsyslog but
also sharing a GlusterFS filesystem. Can those independent rsyslog
processes running on different servers write to the same file on the
GlusterFS?
rsyslog doesn't have any code in it that cares what filesystem it uses.
What would it have to do to "properly use distributed filesystems like
GlusterFS"?
doing a little google work, I find the following page:
http://blog.celingest.com/en/2013/03/21/glusterfs-in-aws/
It says:
... we will list the cases where GlusterFS should not be used:
Sequential files written simultaneously from multiple servers such as logs.
The locking system can lead to serious problems if you store logs within
GlusterFS...
This makes me think that using GlusterFS the way you would like to is a bad
choice, not because of anything in rsyslog, but simply due to limitations in
GlusterFS.
I expect that if you had each rsyslog instance writing to seperate files on
GlusterFS things would be very different. But this is really a question for the
distributed filesystem folks. If there is something that rsyslog should do to
better support a particular filesystem, it would be good to hear about it (but
it may take someone sending a patch or sponsoring work to get support added)
David Lang
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