On Thursday, August 21, 2014 12:00:03 centos-request@centos.org wrote:
Re: [CentOS] SELinux vs. logwatch and virsh From: Daniel J Walsh dwalsh@redhat.com To: CentOS mailing list centos@centos.org
On 08/18/2014 02:13 PM, Bill Gee wrote:
Hi Dan -
"ausearch -m avc -ts recent" produces no output. If I run it as "ausearch -f virsh" then it produces output similar to this. Each day's run of logwatch produces three of these audit log entries. The a1 and a2 values are different for each entry, but everything else is the same.
=============== time->Mon Aug 18 03:21:03 2014 type=SYSCALL msg=audit(1408350063.257:7492): arch=c000003e syscall=21 success=no exit=-13 a0=11ee230 a1=4 a2=7fff722837b0 a3=7fff72283640 items=0 ppid=2815 pid=2816 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=981 comm="bash" exe="/usr/bin/bash" subj=system_u:system_r:logwatch_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1408350063.257:7492): avc: denied { read } for pid=2816 comm="bash" name="virsh" dev="dm-0" ino=135911290 scontext=system_u:system_r:logwatch_t:s0-s0:c0.c1023 tcontext=system_u:object_r:virsh_exec_t:s0 tclass=file ===============
I thought about using audit2allow as you suggest. The problem is then I don't really know what change is required. What exactly will it do? And is there a guarantee that it will work?
logwatch is executing virsh probably to communicate with libvirt to rotate logs or something. You can look in /etc/logrotate.d for a script with virsh to tell you what the command is trying to do.
Hi Dan -
I know EXACTLY what virsh is being called for. I wrote the script! It has nothing to do with logrotate. I want virsh to tell logwatch what the status is of all virtual machines running on the host. Logwatch will then include that in its daily summary report. SELinux is getting in the way.
Regards - Bill Gee