#!/bin/bash # Set env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin # Agent version version="1.2.0" # API Token if [ -f /etc/netweak/token.conf ] then auth=($(cat /etc/netweak/token.conf)) else echo "Error: File /etc/netweak/token.conf is missing." exit 1 fi # Prepare values function prep () { echo "$1" | sed -e 's/^ *//g' -e 's/ *$//g' | sed -n '1 p' } # Base64 values function base () { echo "$1" | tr -d '\n' | base64 | tr -d '=' | tr -d '\n' | sed 's/\//%2F/g' | sed 's/\+/%2B/g' } # Integer values function int () { echo ${1/\.*} } # Filter numeric function num () { case $1 in ''|*[!0-9\.]*) echo 0 ;; *) echo $1 ;; esac } # Agent version version=$(prep "$version") # System uptime uptime=$(prep $(int "$(cat /proc/uptime | awk '{ print $1 }')")) # Login session count sessions=$(prep "$(who | wc -l)") # Process count processes=$(prep "$(ps axc | wc -l)") # Process array processes_array="$(ps axc -o uname:12,pcpu,rss,cmd --sort=-pcpu,-rss --noheaders --width 120)" processes_array="$(echo "$processes_array" | grep -v " ps$" | sed 's/ \+ / /g' | sed '/^$/d' | tr "\n" ";")" # File descriptors file_handles=$(prep $(num "$(cat /proc/sys/fs/file-nr | awk '{ print $1 }')")) file_handles_limit=$(prep $(num "$(cat /proc/sys/fs/file-nr | awk '{ print $3 }')")) # OS details os_kernel=$(prep "$(uname -r)") if ls /etc/*release > /dev/null 2>&1 then os_name=$(prep "$(cat /etc/*release | grep '^PRETTY_NAME=\|^NAME=\|^DISTRIB_ID=' | awk -F\= '{ print $2 }' | tr -d '"' | tac)") fi if [ -z "$os_name" ] then if [ -e /etc/redhat-release ] then os_name=$(prep "$(cat /etc/redhat-release)") elif [ -e /etc/debian_version ] then os_name=$(prep "Debian $(cat /etc/debian_version)") fi if [ -z "$os_name" ] then os_name=$(prep "$(uname -s)") fi fi case $(uname -m) in x86_64) os_arch=$(prep "x64") ;; i*86) os_arch=$(prep "x86") ;; *) os_arch=$(prep "$(uname -m)") ;; esac # CPU details cpu_name=$(prep "$(cat /proc/cpuinfo | grep 'model name' | awk -F\: '{ print $2 }')") cpu_cores=$(prep "$(($(cat /proc/cpuinfo | grep 'model name' | awk -F\: '{ print $2 }' | sed -e :a -e '$!N;s/\n/\|/;ta' | tr -cd \| | wc -c)+1))") if [ -z "$cpu_name" ] then cpu_name=$(prep "$(cat /proc/cpuinfo | grep 'vendor_id' | awk -F\: '{ print $2 } END { if (!NR) print "N/A" }')") cpu_cores=$(prep "$(($(cat /proc/cpuinfo | grep 'vendor_id' | awk -F\: '{ print $2 }' | sed -e :a -e '$!N;s/\n/\|/;ta' | tr -cd \| | wc -c)+1))") fi cpu_freq=$(prep "$(cat /proc/cpuinfo | grep 'cpu MHz' | awk -F\: '{ print $2 }')") if [ -z "$cpu_freq" ] then cpu_freq=$(prep $(num "$(lscpu | grep 'CPU MHz' | awk -F\: '{ print $2 }' | sed -e 's/^ *//g' -e 's/ *$//g')")) fi # RAM usage ram_total=$(prep $(num "$(cat /proc/meminfo | grep ^MemTotal: | awk '{ print $2 }')")) ram_free=$(prep $(num "$(cat /proc/meminfo | grep ^MemFree: | awk '{ print $2 }')")) ram_cached=$(prep $(num "$(cat /proc/meminfo | grep ^Cached: | awk '{ print $2 }')")) ram_buffers=$(prep $(num "$(cat /proc/meminfo | grep ^Buffers: | awk '{ print $2 }')")) ram_usage=$((($ram_total-($ram_free+$ram_cached+$ram_buffers))*1024)) ram_total=$(($ram_total*1024)) # Swap usage swap_total=$(prep $(num "$(cat /proc/meminfo | grep ^SwapTotal: | awk '{ print $2 }')")) swap_free=$(prep $(num "$(cat /proc/meminfo | grep ^SwapFree: | awk '{ print $2 }')")) swap_usage=$((($swap_total-$swap_free)*1024)) swap_total=$(($swap_total*1024)) # Disk usage disk_total=$(prep $(num "$(($(df -P -B 1 | grep '^/' | awk '{ print $2 }' | sed -e :a -e '$!N;s/\n/+/;ta')))")) disk_usage=$(prep $(num "$(($(df -P -B 1 | grep '^/' | awk '{ print $3 }' | sed -e :a -e '$!N;s/\n/+/;ta')))")) # Disk array disk_array=$(prep "$(df -P -B 1 | grep '^/' | awk '{ print $1" "$2" "$3";" }' | sed -e :a -e '$!N;s/\n/ /;ta' | awk '{ print $0 } END { if (!NR) print "N/A" }')") # Active connections if [ -n "$(command -v ss)" ] then connections=$(prep $(num "$(ss -tun | tail -n +2 | wc -l)")) else connections=$(prep $(num "$(netstat -tun | tail -n +3 | wc -l)")) fi # Network interface nic=$(prep "$(ip route get 8.8.8.8 | grep dev | awk -F'dev' '{ print $2 }' | awk '{ print $1 }')") if [ -z $nic ] then nic=$(prep "$(ip link show | grep 'eth[0-9]' | awk '{ print $2 }' | tr -d ':')") fi # IP addresses and network usage ipv4=$(prep "$(ip addr show $nic | grep 'inet ' | awk '{ print $2 }' | awk -F\/ '{ print $1 }' | grep -v '^127' | awk '{ print $0 } END { if (!NR) print "N/A" }')") ipv6=$(prep "$(ip addr show $nic | grep 'inet6 ' | awk '{ print $2 }' | awk -F\/ '{ print $1 }' | grep -v '^::' | grep -v '^0000:' | grep -v '^fe80:' | awk '{ print $0 } END { if (!NR) print "N/A" }')") if [ -d /sys/class/net/$nic/statistics ] then rx=$(prep $(num "$(cat /sys/class/net/$nic/statistics/rx_bytes)")) tx=$(prep $(num "$(cat /sys/class/net/$nic/statistics/tx_bytes)")) else rx=$(prep $(num "$(ip -s link show $nic | grep '[0-9]*' | grep -v '[A-Za-z]' | awk '{ print $1 }' | sed -n '1 p')")) tx=$(prep $(num "$(ip -s link show $nic | grep '[0-9]*' | grep -v '[A-Za-z]' | awk '{ print $1 }' | sed -n '2 p')")) fi # Average system load load=$(prep "$(cat /proc/loadavg | awk '{ print $1" "$2" "$3 }')") # Detailed system load calculation time=$(date +%s) stat=($(cat /proc/stat | head -n1 | sed 's/[^0-9 ]*//g' | sed 's/^ *//')) cpu=$((${stat[0]}+${stat[1]}+${stat[2]}+${stat[3]})) io=$((${stat[3]}+${stat[4]})) idle=${stat[3]} if [ -e /etc/netweak/cache ] then data=($(cat /etc/netweak/cache)) interval=$(($time-${data[0]})) cpu_gap=$(($cpu-${data[1]})) io_gap=$(($io-${data[2]})) idle_gap=$(($idle-${data[3]})) if [[ $cpu_gap > "0" ]] then load_cpu=$(((1000*($cpu_gap-$idle_gap)/$cpu_gap+5)/10)) fi if [[ $io_gap > "0" ]] then load_io=$(((1000*($io_gap-$idle_gap)/$io_gap+5)/10)) fi if [[ $rx > ${data[4]} ]] then rx_gap=$(($rx-${data[4]})) fi if [[ $tx > ${data[5]} ]] then tx_gap=$(($tx-${data[5]})) fi fi # System load cache echo "$time $cpu $io $idle $rx $tx" > /etc/netweak/cache # Prepare load variables rx_gap=$(prep $(num "$rx_gap")) tx_gap=$(prep $(num "$tx_gap")) load_cpu=$(prep $(num "$load_cpu")) load_io=$(prep $(num "$load_io")) # Get network latency ping_eu=$(prep $(num "$(ping -c 2 -w 2 ping-eu.netweak.com | grep rtt | cut -d'/' -f4 | awk '{ print $3 }')")) ping_us=$(prep $(num "$(ping -c 2 -w 2 ping-us.netweak.com | grep rtt | cut -d'/' -f4 | awk '{ print $3 }')")) ping_as=$(prep $(num "$(ping -c 2 -w 2 ping-as.netweak.com | grep rtt | cut -d'/' -f4 | awk '{ print $3 }')")) # Build data for post data_post="token=${auth[0]}&data=$(base "$version") $(base "$uptime") $(base "$sessions") $(base "$processes") $(base "$processes_array") $(base "$file_handles") $(base "$file_handles_limit") $(base "$os_kernel") $(base "$os_name") $(base "$os_arch") $(base "$cpu_name") $(base "$cpu_cores") $(base "$cpu_freq") $(base "$ram_total") $(base "$ram_usage") $(base "$swap_total") $(base "$swap_usage") $(base "$disk_array") $(base "$disk_total") $(base "$disk_usage") $(base "$connections") $(base "$nic") $(base "$ipv4") $(base "$ipv6") $(base "$rx") $(base "$tx") $(base "$rx_gap") $(base "$tx_gap") $(base "$load") $(base "$load_cpu") $(base "$load_io") $(base "$ping_eu") $(base "$ping_us") $(base "$ping_as")" # API request with automatic termination if [ -n "$(command -v timeout)" ] then timeout -s SIGKILL 30 wget -q -o /dev/null -O /etc/netweak/log/agent.log -T 25 --post-data "$data_post" --no-check-certificate "https://api.netweak.com/agent/report" else wget -q -o /dev/null -O /etc/netweak/log/agent.log -T 25 --post-data "$data_post" --no-check-certificate "https://api.netweak.com/agent/report" wget_pid=$! wget_counter=0 wget_timeout=30 while kill -0 "$wget_pid" && (( wget_counter < wget_timeout )) do sleep 1 (( wget_counter++ )) done kill -0 "$wget_pid" && kill -s SIGKILL "$wget_pid" fi # Finished exit 1