Re: Accounting audit messages dropped from kernel
On Thursday, December 11, 2014 05:12:03 PM Kangkook Jee wrote:
Hi, all
I'm running a customized user-level audit client and getting the following
messages from /var/log/kern.log every now and then. The message seems like
that it is dropping audit messages due to buffer limitations.
I wouldn't say, due to buffer limitations. Its because your client is not
reading fast enough. 102400 should be plenty of buffers. By contrast, I
recommend 8192 for busy systems using auditd.
Dec 11 21:46:56 hostname-10 kernel: [2081500.871616] audit_log_start:
109700
callbacks suppressed
Dec 11 21:46:56 hostname-10 kernel: [2081500.871620] audit:
audit_backlog=102401
> audit_backlog_limit=102400
Dec 11 21:46:56 hostname-10 kernel: [2081500.871622] audit:
audit_lost=-295739022 audit_rate_limit=0 audit_backlog_limit=102400
What I want to know more from this is that how many messages we are
missing.
For this, can I simply refer audit_lost field?
Probably.
or I also need to consider the value from " callbacks
suppressed" line?
I cannot find that in any kernel code I have.
-Steve