Editing Basic CentOS 7 Installation

== CentOS Distribution Install ==
Centos 7 minimal install from DVD install disk
During install process:
* use custom formatting
* set partition type to 'standard'
* click on 'automatically create partitions
* delete /home partition and increase size of / to fill the disk
* set hostname (if known) 
* enable all basic network interfaces (do not rename -- it will crash the installer)

== Basic system prep ==
<pre>yum -y install net-tools rsync zsh epel-release yum-cron yum-utils mlocate 
yum -y install sshfs nfs-utils ssmtp
yum -y remove firewalld postfix
yum autoremove -y NetworkManager NetworkManager-libnm # only if not using as graphic workstation
systemctl enable yum-cron
systemctl start yum-cron
yum -y update</pre>

Disable SELinux (no comment)
<pre>sed -i 's/=enforcing/=disabled/g' /etc/selinux/config
setenforce 0</pre>

Reboot and verify everything comes up properly
 reboot

== System Configuration ==
Set the system hostname (if not set during installation)
 hostnamectl set-hostname <hostname>.williams.localnet

Enable passwordless sudo:
* use visudo
* search for 'wheel'
* comment out that line
* uncomment the one below it

Set '''zsh''' as the default shell
* chsh to /bin/zsh (both root and ewilliam)
* copy '''ssh''' and '''zsh''' config files (both root and ewilliam)
<pre>scp -r calormen:.ssh .
scp calormen:.zshrc .
scp calormen:.zlogin . </pre>

Setup backup to central file server
* copy scripts from calormen
<pre>scp calormen:/etc/cron.daily/backup /etc/cron.daily
scp calormen:/usr/local/bin/rsync_backup.sh /usr/local/bin/ </pre>
* edit rsync_backup.sh, changing target directory and list of directories to backup
* create target directory on storage1 if it doesn't exist
* run /etc/cron.daily/backup to verify proper operation

Enable connection to the central log server
 scp calormen:/etc/rsyslog.d/99-remotelog.conf /etc/rsyslog.d ; systemctl restart rsyslog

Enable mail to central mail server
<pre>echo "root: ewilliam@williams.localnet" >> /etc/aliases
echo "ewilliam: ewilliam@williams.localnet" >> /etc/aliases</pre>

enable references to non-williamsnet addresses for development cluster
 scp aslan:/etc/hosts /etc/hosts