CentOS

Initial Server Setup with CentOS 6
https://www.digitalocean.com/community/tutorials/initial-server-setup-with-centos-6

Config Static IP
https://www.linglom.com/networking/configure-static-ip-address-on-centos-7/

CentOS7

Verify Status
#ip a

Set Static IP
$cd /etc/sysconfig/network-scripts/
$sudo nano ifcfg-ens192 (eaxample, device: ens192)

Restart the interface:
$sudo ifdown ens192
$sudo ifup ens192

Check connected interface
#nmcli d

CentOS6

Restart Network Interface
#service network restart

Verify
#ifconfig or ip a

Check service status
#service --status-all

Setup SSH Server
Install Open SSH
#yum install openssh

#vi /etc/ssh/sshd_config

Port 22
AddressFamily any
ListenAddress 0.0.0.0
ListenAddress ::

Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key

# Authentication:
PermitRootLogin yes

Start the ssh server
#service sshd reload (start, etc...)

Mount Image

How to Mount and Unmount an ISO Image in RHEL/CentOS/Fedora and Ubuntu

NIC Teaming
https://www.thegeekdiary.com/centos-rhel-7-how-to-configure-network-bonding-or-nic-teaming/

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-configure_a_network_team_using-the_command_line

Run Levels

#init 0-6

0 — Halt

1 — Single-user text mode

2 — Not used (user-definable)

3 — Full multi-user text mode

4 — Not used (user-definable)

5 — Full multi-user graphical mode (with an X-based login screen)

6 — Reboot