Generic Linux server setup

Things to do on all servers:

awslogs

• /var/log/auth.log
• /var/log/mail.log
• /var/log/syslog

move cron off to its own log

• /etc/rsyslog.d/50-default.conf

*.*;auth,authpriv.none,cron.none   -/var/log/syslog
cron.*                             /var/log/cron.log

get rid of cron in auth.log

• /etc/pam.d/common-session-noninteractive, at end of file

# and here are more per-package modules (the "Additional" block)
session [success=1 default=ignore] pam_succeed_if.so service in cron quiet use_uid
session	required	pam_unix.so

fail2ban

• do