Redhat Logs Rotation

/etc/logrotate.conf

$ ls -l /etc/logrotate.d
total 64
-rw-r--r--. 1 root root 155 Aug 20  2014 aide
-rw-r--r--. 1 root root 178 Jun 23  2015 chrony
-rw-r--r--  1 root root 292 Mar 19 09:50 content_gateway_rotate
-rw-r--r--. 1 root root  71 Jul 21  2015 cups
-rw-r--r--  1 root root 172 Jun 29  2016 iscsiuiolog
-rw-r--r--  1 root root 165 May 26  2016 libvirtd
-rw-r--r--  1 root root 163 May 26  2016 libvirtd.qemu
-rw-r--r--. 1 root root 106 Sep  5  2014 numad
-rw-r--r--. 1 root root 136 Jan 27  2014 ppp
-rw-r--r--. 1 root root 408 Oct  1  2014 psacct
-rw-r--r--  1 root root 115 Jul  4  2016 samba
-rw-r--r--. 1 root root  71 Oct 13  2015 subscription-manager
-rw-r--r--. 1 root root 224 Sep  8  2015 syslog
-rw-r--r--. 1 root root  32 Dec  9  2013 up2date
-rw-r--r--. 1 root root 100 May 20  2015 wpa_supplicant
-rw-r--r--. 1 root root 100 Sep 11  2015 yum


$cat /etc/cron.daily/logrotate
#!/bin/sh

/usr/sbin/logrotate /etc/logrotate.conf
EXITVALUE=$?
if [ $EXITVALUE != 0 ]; then
    /usr/bin/logger -t logrotate "ALERT exited abnormally with [$EXITVALUE]"
fi
exit 0

UNIX performance tuning commands

Linux
nproc
lscpu
top
sar
iostat
vmstat

Solaris
prstat -a

redhat su: Permission denied

edit

 /etc/pam.d/su

remark the following line

auth       required     pam_wheel.so use_uid

It requires users to be in the wheel group to be able to switch user. 

User switching as non-root works again when this pam module is disabled for su.