provision_new_server.sh

@@ -1,11 +1,11 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 #Author: Aaron Johnson
 #Comment: This script is not intended to be portable or fail-safe, and is used in my personal provisioning process.
 
 name_old=$(cat /etc/hostname)
 #Below command preserved in case it is needed to add older OS support
 #ipadd_old=$(ifconfig | awk '/inet6/{next;} /127.0.0.1/{next;} /inet/{print $2;}' | grep 172.23)
-cidr_old=$(ip a | awk '/inet6/{next;} /127.0.0.1/{next;} /inet/{print $2;}' | grep -E '172.2[31]')
+cidr_old=$(ip a | awk '/inet6/{next;} /127.0.0.1/{next;} /inet/{print $2;}' | grep 172.23)
 ipadd_old=$(echo $cidr_old | awk -F '/' '{print $1}')
 ipc_present=false
 
@@ -23,21 +23,21 @@ fi
 ## Validate CIDR
 n='([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])'
 m='([0-9]|[12][0-9]|3[012])'
-if ! echo $cidr | grep -E "^$n(\.$n){3}/$m$" 2>&1 >/dev/null; then
+if ! echo $cidr | grep -E "^$n(\.$n){3}/$m$" &>/dev/null; then
     printf "\nCIDR input is not valid!\n"
     exit 12
 fi
 # End input sanity check
 
 # Test if 'ipcalc' utility is available
-which ipcalc 2>&1 >/dev/null && ipc_present=true
+which ipcalc &>/dev/null && ipc_present=true
 
 ipadd=$(echo $cidr | awk -F '/' '{print $1}')
 echo
 printf "Review these changes carefully!\n\n"
 if [ "$ipc_present" = true ]; then
-    snm=$(ipcalc $cidr | grep Netmask | grep -Eo "($n\.){3}$n")
+    snm=$(ipcalc $cidr | grep Netmask | grep -Eo "($n.){3}$n")
-    snm_old=$(ipcalc $cidr_old | grep Netmask | grep -Eo "($n\.){3}$n")
+    snm_old=$(ipcalc $cidr_old | grep Netmask | grep -Eo "($n.){3}$n")
     printf "+,CURRENT,PENDING\nHostname:,$name_old,$name\nAddress:,$ipadd_old,$ipadd\nCIDR:,$cidr_old,$cidr\nNetmask:,$snm_old,$snm" | column -s, -t
 else
     printf "+,CURRENT,PENDING\nHostname:,$name_old,$name\nAddress:,$ipadd_old,$ipadd\nCIDR:,$cidr_old,$cidr" | column -s, -t
@@ -67,21 +67,12 @@ sed -i "s/${name_old}/${name}/g" /etc/zabbix/zabbix_agentd.conf && printf "DONE\
 
 # Update IP address
 printf "Update IP address... "
-if $(grep 'SUSE' /etc/os-release 2>&1 >/dev/null); then
+if $(uname -r | grep -E 'el8' &>/dev/null); then
-    printf "OpenSuSE... "
-    nmcli con mod ens18 ipv4.addresses $cidr && printf "DONE\n" || exit 1
-elif $(uname -r | grep 'arch' 2>&1 >/dev/null); then
-    printf "Arch Linux... "
-    sed -i "s_${cidr_old}_${cidr}_g" /etc/netctl/ens18 && printf "DONE\n" || exit 1
-elif $(grep -i 'arch' /etc/os-release 2>&1 >/dev/null); then
-    printf "Arch Linux (alternative kernel)... "
-    sed -i "s_${cidr_old}_${cidr}_g" /etc/netctl/ens18 && printf "DONE\n" || exit 1
-elif $(uname -r | grep -E 'el8' 2>&1 >/dev/null); then
     printf "CentOS 8... "
     nmcli con mod ens18 ipv4.addresses $cidr && printf "DONE\n" || exit 1
-elif $(grep 'ubuntu' /etc/os-release 2>&1 >/dev/null); then
+elif $(uname -r | grep 'arch' &>/dev/null); then
-    printf "Ubuntu... "
+    printf "Arch Linux... "
-     sed -i "s_${cidr_old}_${cidr}_g" /etc/netplan/00-installer-config.yaml && printf "DONE\n" || exit 1
+    sed -i "s_${cidr_old}_${cidr}_g" /etc/netctl/ens18 && printf "DONE\n" || exit 1
 else
     printf "FAIL\n\nOS distribution not supported! Update IP address manually before rebooting!\n\n"
 fi