checknet

#!/bin/bash
#	checknet-0.0.1	Written by Kyle Walker	kwalker@redhat.com
#	Uses sosreports to grab relevant active NIC information for a system.
        
if [ $# == 0 ]; then
	for i in `grep 'Link.*yes' sos_commands/networking/ethtool_e* sos_commands/networking/ethtool_p* -l 2>/dev/null | cut -d "_" -f 3-5`
	do 
		if [ -f sos_commands/networking/ethtool_-S_$i ]; then
			echo $i - `grep driver sos_commands/networking/ethtool_-i_$i `
			cat sos_commands/networking/ethtool_-S_$i | awk '/error|drop|discard|collision|out of|crc/ {if($NF != 0 && $0!~/address.*drop|address_/) print $0}' 
		else 
			echo -e "$i\nNo stats available in sosreport"
		fi
	done
fi
case "$1" in
-v) 
	for i in `grep 'Link.*yes' sos_commands/networking/ethtool_e* sos_commands/networking/ethtool_p* -l 2>/dev/null | cut -d "_" -f 3-5`
	do 
		echo $i
		cat sos_commands/networking/ethtool_-S_$i | awk '/error|drop|discard|collision|crc|out of/ {if($NF == 0) print $0}'
	done
;;
-a) 
	for i in `grep 'Link.*yes' sos_commands/networking/ethtool_e* sos_commands/networking/ethtool_p* -l 2>/dev/null | cut -d "_" -f 3-5`
	do 
		echo $i; cat sos_commands/networking/ethtool_-S_$i | awk '{print $0}'
	done
;;
-history) 
	shift
	if [[ $1 == '--max' ]]; then 
		shift
		for i in `ls var/log/sa/sar* sar*`
		do 
			echo $i
			awk '/rxerr/,/^$/' $i | awk 'BEGIN {first=1; counter=0; max='"$1"'; if(max>1) max--} /IFACE/ {if(first==1) print $0; first++} !/IFACE|^ *$|bond/ {if($3+$4+$5+$6+$7+$8+$9+$10+$11 > 0){if(counter <= max) {print $0; counter++}}}'
		done
	else
		for i in `ls var/log/sa/sar* sar*`
		do
			echo $i
			awk 'BEGIN {header=0} /rxerr/ {if(header==0){print;header++}} /rxerr/,/^$/ {if($0~/^$/) print; if($0!~/rxerr|bond/){for(x=3;x<=11;x++) {if($x > 0) y++; if(x==11&&y>0) {print $0; y=0}}}}' $i
		done
	fi
;;
-history-count) for i in `ls var/log/sa/sar* sar*`
		do
			echo -en "$i\t\t"
			awk '/rxerr/,/^$/' $i | awk 'BEGIN {count=0} !/IFACE|^ *$|bond/ {if($3+$4+$5+$6+$7+$8+$9+$10+$11 > 0)count++} END {print "Total number of issues: "count}'
		done | column -t
;;
-d) for i in `cat ifconfig | awk '$0~/^em|^p|^eth/ {print $1}'`; do echo $i; for b in `grep bus-info sos_commands/networking/ethtool_-i_$i | cut -d ' ' -f 2 | cut -d ':' -f 2-3`; do grep $b lspci -m 1; done; done
;;
-cluster) for i in `ls -d */`
		do 
		if [ -d $i/sos_commands/networking/ ]
		then
			echo $i;
			for b in `grep 'Link.*yes' $i\sos_commands/networking/ethtool_[ep]* -l | cut -d "_" -f 3 2>/dev/null`
			do
				echo -e "  "$b - `grep driver $i/sos_commands/networking/ethtool_-i_$b 2>/dev/null`
				cat $i/sos_commands/networking/ethtool_-S_$b | awk '/[rx|tx]_error|drop|discard|collision|crc|out of/ {if($NF != 0 && $0!~/address.*drop|address_/) print $0}'
			done
			echo "";
		fi
		done
;;
-tcpstat) output="Sosreport:\tDropped-recv-pkts\tTotal-recv-pkts\tPercentage-drop\n"
		if [ ! -f ifconfig ];
		then
			for i in `ls -d */`
			do
				if [ -f $i/ifconfig ]
				then 
					output=$output" "$i" "
					let x=`awk 'BEGIN {sum=0} /collapsed in receive/ {sum+=$1} END {print sum}' $i/sos_commands/networking/netstat_-s`
					let y=`awk 'BEGIN {pkts=0} /total packets received/ {pkts=$1} END {print pkts}' $i/sos_commands/networking/netstat_-s`
					output=$output$x" "$y" "
					if [ $y -ne 0 ]
					then
						output=$output$(echo "scale=3;($x/$y)*100" | bc)
					else
						output=$output"0"
					fi
				fi
				output=$output"\n"
			done
			echo -e $output | column -t 
		else
			output=$output" "${PWD##*/}" "
                        let x=`awk 'BEGIN {sum=0} /collapsed in receive/ {sum+=$1} END {print sum}' sos_commands/networking/netstat_-s`
			let y=`awk 'BEGIN {pkts=0} /total packets received/ {pkts=$1} END {print pkts}' sos_commands/networking/netstat_-s`
                        output=$output$x" "$y" "
                        if [ $y -ne 0 ]
                        then
                                output=$output$(echo "scale=3;($x/$y)*100" | bc)
                        else
                                output=$output"0"
                        fi
                        echo -e $output | column -t

		fi
;;
-ifup) awk 'BEGIN {printer=0; buffer=""} /^eth|^bond|^em|^p[0-9]/,/^$/ {buffer=buffer"\n"$0; if($0~/^[ \t]*UP/) printer=1; if($0~/^$/ && printer>0) {print buffer; buffer=""; printer=0} else if($0~/^$/) {buffer="";printer=0}}' ifconfig
;;
-h) echo "checknet: Should be run from the root directory of a sosreport; except -tcpstat and -cluster"
	echo "Usage: checknet [option]"
	echo -e "\tOptions:"
	echo -e "\t\tNo options - Outputs a number of NIC-level errors and active driver in use"
	echo -e "\t\t-h\t\tThis message"
	echo -e "\t\t-a\t\tReturns all entries in active NIC interfaces"
	echo -e "\t\t-v\t\tReturns the entries above that do have 0 values"
	echo -e "\t\t-d\t\tReturns the hardware as reported by lspci output"
	echo -e "\t\t-cluster\tRun from a directory that has multiple sosreports. Output is the same type of no options output but for multiple sosreports at once"
	echo -e "\t\t-tcpstat\tRun from a directory that has multiple sosreports. Checks the number of buffer [over,under]run drops against total packet transmission"
	echo -e "\t\t-history\tParses the existing sar data files for any instances of network issues"
	echo -e "\t\t--max\tReturns the first N instances in the -history output above"
	echo -e "\t\t-history-count\tSame process as -history, but outputs only counts of issues"
	echo -e "\t\t-ifup\tReturns output from ifconfig for interfaces that are UP"
;;
esac



#Included the entry below if having the customer generate new output:
#for i in `ifconfig | grep -Eve '^ .*$' -e '^ *$' -e lo | cut -d ':' -f 1`; do if [ `ethtool $i 2>/dev/null| grep Link | awk '{print $NF}'` == "yes" ]; then echo $i - `ethtool -i $i | grep driver`; ethtool -S $i | awk '/error|drop|discard|collision/ {if($NF != 0) print $0}'; fi ; done