CentOS 6.7 .Ночью самопроизвольно появились какие-то непонятные сообщения о попытке добавления странных юзеров. Может кто-нибудь объяснит что это такое
May 26 03:36:32 grid sshd[16920]: Server listening on 0.0.0.0 port 22.
May 26 03:36:32 grid sshd[16920]: Server listening on :: port 22.
May 26 03:42:27 grid add[18496]: failed adding user 'rpcuser', exit code: 9
May 26 03:42:27 grid groupmod[18501]: group changed in /etc/group (group nfsnobody/65534)
May 26 03:42:41 grid useradd[18549]: failed adding user 'ntp', exit code: 9
May 26 03:50:53 grid useradd[20577]: failed adding user 'tcpdump', exit code: 9
May 26 03:52:53 grid sshd[16920]: Received signal 15; terminating.
May 26 03:52:57 grid sshd[21149]: Server listening on 0.0.0.0 port 22.
May 26 03:52:57 grid sshd[21149]: Server listening on :: port 22.
May 26 03:29:05 Updated: python-urlgrabber-3.9.1-11.el6.noarch
May 26 03:29:07 Updated: yum-3.2.29-73.el6.centos.noarch
May 26 03:36:05 Updated: libgcc-4.4.7-17.el6.x86_64
May 26 03:36:06 Updated: bash-4.1.2-40.el6.x86_64
May 26 03:36:25 Updated: glibc-common-2.12-1.192.el6.x86_64
May 26 03:36:32 Updated: glibc-2.12-1.192.el6.x86_64
May 26 03:36:33 Updated: libselinux-2.0.94-7.el6.x86_64
May 26 03:36:35 Updated: glib2-2.28.8-5.el6.x86_64
May 26 03:36:36 Updated: chkconfig-1.3.49.5-1.el6.x86_64
May 26 03:36:37 Updated: libstdc++-4.4.7-17.el6.x86_64
May 26 03:36:37 Updated: freetype-2.3.11-17.el6.x86_64
