Manual Bash Script for Configure Network Interfaz (Support CentOS 6 o 7)

starting_network_configure_man.sh

#!/bin/bash
# @octopusgen - 08-04-2017
# add dns servers
echo "nameserver 10.30.1.12" > /etc/resolv.conf
echo "nameserver 10.30.1.14" >> /etc/resolv.conf

# add network for ethX
ETH="eth1";
MAC="00:50:56:A1:31:C9";
IP="10.30.3.181";
HOST="paine2017";
GW="10.30.1.1";

# Create the Script ifcfg-XX
PATH_NETCONFIG="/etc/sysconfig/network-scripts/ifcfg-$ETH";

echo "DEVICE=$ETH" > $PATH_NETCONFIG;
echo "NM_CONTROLLED='yes' " >> $PATH_NETCONFIG
echo "ONBOOT=yes" >> $PATH_NETCONFIG
echo "HWADDR=$MAC" >> $PATH_NETCONFIG
echo "TYPE=Ethernet" >> $PATH_NETCONFIG
echo "BOOTPROTO=static" >> $PATH_NETCONFIG
echo "NAME='System $ETH'" >> $PATH_NETCONFIG
echo "UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03" >> $PATH_NETCONFIG
echo "IPADDR=$IP" >> $PATH_NETCONFIG
echo "NETMASK=255.255.0.0" >> $PATH_NETCONFIG

# Setting the gateway
PATH_NETWORK="/etc/sysconfig/network";

echo "NETWORKING=yes" > $PATH_NETWORK;
echo "HOSTNAME=$HOST" >> $PATH_NETWORK;
echo "GATEWAY=$GW" >> $PATH_NETWORK;

# /etc/hosts
echo "127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4" > /etc/hosts
echo "::1         localhost localhost.localdomain localhost6 localhost6.localdomain6" >> /etc/hosts
echo "$IP     $HOST" >> /etc/hosts

# restart the network services
/etc/init.d/network restart

# install package for sysadmin
yum install -y vim nano telnet screen nmap openssh-clients wget rsync git net-tools traceroute bind-utils

# recommend reboot the system 
# reboot

Script para generar configuración automática de la interfaz de red modo "Manual" . Para CentOS 6.7 o 7.

El script principalmente realiza las siguientes acciones

• Se agregan los servidores DNS

• Se crea script de configuración de la tarjeta de red en modo "manual" utilizando TCP/IP estática.

• Se agrega puerta de enlace (por defecto)

• Se crea tabla hosts (base)

• Reiniciamos el servicio de networking

• Instalamos algunos paquetes adicionales para facilitar la administración (Go Sysadmin ;)).

Herramientas Esenciales para la administración de servicios

sudo yum install -y vim nano telnet screen nmap openssh-clients wget rsync git net-tools traceroute bind-utils