This tutorial is a bit more complicated compared to the other one, and you will have to have some technical knowledge.
First things first, you should check to see if your router supports SNMP. My Asus Router does, but the “logging” option is very basic and it was quicker for me to install a custom firmware than to faff around with the default system.
Set up syslog
apt-get install rsyslog
nano /etc/rsyslog.conf
uncomment --
$ModLoad imudp
$UDPServerRun 514
$ModLoad imtcp
$InputTCPServerRun 514
touch /var/log/asusrouter.log
root@raspberrypi:~# nano /etc/rsyslog.d/made.conf
$template NetworkLog, "/var/log/asusrouter.log"
:fromhost-ip, isequal, "192.168.1.1" -?NetworkLog
& ~
nano /etc/logrotate.d/logrotate
add --
/var/log/netgear.log {
rotate 7
size 500k
notifempty
compress
postrotate
invoke-rc.d rsyslog rotate > /dev/null
endscript
}
service rsyslog restart
nano /var/log/asusrouter.log
Set up OLED
apt-get install -y python-smbus
apt-get install -y i2c-tools
Interfacing options
Advanced options
Enable SPI and i2c
apt-get install build-essential python-dev python-pip python-imaging python-smbus git
pip install RPi.GPIO
cd /root/
git clone https://github.com/adafruit/Adafruit_Python_SSD1306.git
cd Adafruit_Python_SSD1306
python setup.py install
clone https://github.com/adafruit/Adafruit_Python_SSD1306.git
cd Adafruit_Python_SSD1306
python setup.py install
nano shapes.py
disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST, i2c_bus=1)
python shapes.py
ctrl-c to cancel
apt-get install screen
now if you want to run shapes and exit out of ssh, run screen python shapes.sy and hit ctrl a+d, to resume screen type screen -r and to close, ctrl-c.
If you type i2cdetect -y 1 and you get a "no such file or directory" error, do not despair
Set up SNMP
apt-get install snmp
apt-get install snmp-mibs-downloader
download-mibs
snmpget -v2c -c public 192.168.1.1 1.3.6.1.2.1.2.2.1.10.1
In throughput
snmpget -v2c -c public 192.168.1.1 1.3.6.1.2.1.2.2.1.16.1
Out throughput
The ending .1 might not be correct for you, use snmpwalk to determine what network adapter you should be looking for --
snmpwalk -v 1 -c public 192.168.1.1
nano /etc/snmp/snmpd.conf
# Map 'wordbug' community to the 'ConfigUser'
# Map 'public' community to the 'AllUser'
# sec.name source community
com2sec ConfigUser default wordbug
com2sec AllUser default public
# Map 'ConfigUser' to 'ConfigGroup' for SNMP Version 2c
# Map 'AllUser' to 'AllGroup' for SNMP Version 2c
# sec.model sec.name
group ConfigGroup v2c ConfigUser
group AllGroup v2c AllUser
# Define 'SystemView', which includes everything under .1.3.6.1.2.1.1 (or .1.3.6.1.2.1.25.1)
# Define 'AllView', which includes everything under .1
# incl/excl subtree
view SystemView included .1.3.6.1.2.1.1
view SystemView included .1.3.6.1.2.1.25.1.1
view AllView included .1
# Give 'ConfigGroup' read access to objects in the view 'SystemView'
# Give 'AllGroup' read access to objects in the view 'AllView'
# context model level prefix read write notify
access ConfigGroup "" any noauth exact SystemView none none
access AllGroup "" any noauth exact AllView none none
service snmpd restart
The Python code to use a Raspberry Pi as a bandwidth monitor is below —
import subprocess import time import Adafruit_GPIO.SPI as SPI import Adafruit_SSD1306 import Image import ImageDraw import ImageFont # Raspberry Pi pin configuration: RST = 24 # 128x64 display with hardware I2C: disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST) # Initialize library. disp.begin() # Clear display. disp.clear() disp.display() # Create blank image for drawing. # Make sure to create image with mode '1' for 1-bit color. width = disp.width height = disp.height image = Image.new('1', (width, height)) # Get drawing object to draw on image. draw = ImageDraw.Draw(image) # Load default font. # font = ImageFont.load_default() font = ImageFont.truetype('Ubuntu-M.ttf', 14) fontsmall = ImageFont.truetype('Ubuntu-M.ttf', 10) fontmedium = ImageFont.truetype('Ubuntu-M.ttf', 12) #Display Image disp.image(image) disp.display() #print 'Press Ctl-C to exit' #functions def getSnmpData (oid): try: data = subprocess.check_output("snmpget -v2c -c public 192.168.1.1 " + oid, shell = True) except subprocess.CalledProcessError as e: data = e else: data = "unhandled error" return data; def getSnmpInt (oid): try: data = subprocess.check_output("snmpget -v2c -c public 192.168.1.1 " + oid, shell = True) data = data.split() data = data.pop() except: data = "0" return int(data) def getSnmpPIData (PIoid): try: PIdata = subprocess.check_output("snmpget -v2c -c public 127.0.0.1 " + PIoid, shell = True) except subprocess.CalledProcessError as f: PIdata = f else: PIdata = "unhandled error" return PIdata; def getSnmpPIInt (PIoid): try: PIdata = subprocess.check_output("snmpget -v2c -c public 127.0.0.1 " + PIoid, shell = True) PIdata = PIdata.split() PIdata = PIdata.pop() except: PIdata = "0" return int(PIdata) def drawBar (x, barHeight): # parameters are x, y, end x, end y # draw.rectangle ((x, height - barHeight, x + 10, height -1), outline=255, fill=255) draw.rectangle ((x, 32 - barHeight, x + 10, height - 32), outline=255, fill=255) def drawBarLOW (x, barLOWHeight): # parameters are x, y, end x, end y draw.rectangle ((x, 32 + barLOWHeight, x + 10, height - 32), outline=255, fill=255) def textRate (rate): rate = rate * 8 / 1000 if rate < 1000: result = str(round(rate,1)) + 'k' else: result = str(round(rate/1000,1)) + 'm' return result #defines # oidInWan = '1.3.6.1.2.1.2.2.1.10.11' #32bit oidInWan = '1.3.6.1.2.1.31.1.1.1.6.11' # oidOutWan = '1.3.6.1.2.1.2.2.1.16.11' #32bit oidOutWan = '1.3.6.1.2.1.31.1.1.1.10.11' # oidInPI = '1.3.6.1.2.1.2.2.1.16.3' #32bit oidInPI = '1.3.6.1.2.1.31.1.1.1.10.3' # oidOutPI = '1.3.6.1.2.1.2.2.1.10.3' #32bit oidOutPI = '1.3.6.1.2.1.2.2.1.10.3' lastInBytes = getSnmpInt (oidInWan); lastOutBytes = getSnmpInt (oidOutWan); lastPIInBytes = getSnmpPIInt (oidInPI); lastPIOutBytes = getSnmpPIInt (oidOutPI); lastTime = time.time() maxRateIn = 86000000 maxRateOut = 24000000 PImaxRateIn = 50000000 PImaxRateOut = 24000000 #timed array vars timerTime = time.time() highestSpeedIn = 0 highestSpeedOut = 0 PIhighestSpeedIn = 0 PIhighestSpeedOut = 0 speedArrayIn = [] speedArrayOut = [] PIspeedArrayIn = [] PIspeedArrayOut = [] inMax = 0 outMax = 0 PIinMax = 0 PIoutMax = 0 while (1): time.sleep(2) draw.rectangle((0, 0, width, height), outline=0, fill=0) now = time.time() elapsed = now - lastTime lastTime = now #calculate rates in and out inBytes = getSnmpInt (oidInWan) currInBytes = (inBytes - lastInBytes) / elapsed lastInBytes = inBytes outBytes = getSnmpInt (oidOutWan) currOutBytes = (outBytes - lastOutBytes) / elapsed lastOutBytes = outBytes PIinBytes = getSnmpPIInt (oidInPI) currPIInBytes = (PIinBytes - lastPIInBytes) / elapsed lastPIInBytes = PIinBytes PIoutBytes = getSnmpPIInt (oidOutPI) currPIOutBytes = (PIoutBytes - lastPIOutBytes) / elapsed lastPIOutBytes = PIoutBytes # currPIinBytes = 'dog ' #max rate last 24 hours calculations if currInBytes > highestSpeedIn: highestSpeedIn = currInBytes if currOutBytes > highestSpeedOut: highestSpeedOut = currOutBytes if currPIInBytes > PIhighestSpeedIn: PIhighestSpeedIn = currPIInBytes if currPIOutBytes > PIhighestSpeedOut: PIhighestSpeedOut = currPIOutBytes if now > timerTime + 3600: print '----------------------------------------------------------------- time expired' timerTime = now speedArrayIn.append (highestSpeedIn) if len (speedArrayIn) > 23: del speedArrayIn[0] inMax = max(speedArrayIn) speedArrayOut.append (highestSpeedOut) if len (speedArrayOut) > 23: del speedArrayOut[0] outMax = max(speedArrayOut) highestSpeedIn = 0 highestSpeedOut = 0 PIspeedArrayIn.append (PIhighestSpeedIn) if len (PIspeedArrayIn) > 23: del PIspeedArrayIn[0] PIinMax = max(PIspeedArrayIn) PIspeedArrayOut.append (PIhighestSpeedOut) if len (PIspeedArrayOut) > 23: del PIspeedArrayOut[0] PIoutMax = max(PIspeedArrayOut) PIhighestSpeedIn = 0 PIhighestSpeedOut = 0 #test output # for inSpd in speedArrayIn: # print '--- ' + str(inSpd) # print 'inMax ' + str(inMax) #adjust these in each loop in case we find a faster speed inMax = max(inMax, highestSpeedIn) outMax = max(outMax, highestSpeedOut) PIinMax = max(PIinMax, PIhighestSpeedIn) PIoutMax = max(PIoutMax, PIhighestSpeedOut) #print str(now) + ' ' + str(timerTime) # print 'In: ' + textRate(currInBytes) + '\tOut: ' + textRate(currOutBytes) + '\tElapsed ' + str(round(elapsed,2)) + '\t\tInMax ' + textRate(inMax) + '\tOutMax ' + textRate(outMax) # print 'PIIn: ' + textRate(currPIInBytes) + '\tPIOut: ' + textRate(currPIOutBytes) + '\tElapsed ' + str(round(elapsed,2)) + '\t\tPIInMax ' + textRate(PIinMax) + '\tPIOutMax ' + textRate(PIoutMax) # print 'Hi In ' + str(highestSpeedIn) + ' Hi Out ' + str(highestSpeedOut) # print 'PIHi In ' + str(PIhighestSpeedIn) + ' PIHi Out ' + str(PIhighestSpeedOut) #draw graph inHeight = 0.0 outHeight = 0.0 PIinHeight = 0.0 PIoutHeight = 0.0 if currInBytes > 0: inHeight = float(currInBytes * height / inMax) #was maxRateIn if currOutBytes > 0: outHeight = float(currOutBytes * height / outMax) if currPIInBytes > 0: PIinHeight = float(currPIInBytes * height / PIinMax) if currPIOutBytes > 0: PIoutHeight = float(currPIOutBytes * height / PIoutMax) drawBar (0, inHeight) drawBar (14, PIinHeight) drawBarLOW (0, outHeight) drawBarLOW (14, PIoutHeight) #write rates draw.text((31,24), textRate(currInBytes), font=font, fill=255) draw.text((76,24), textRate(currOutBytes), font=font, fill=255) draw.text((31,36), textRate(currPIInBytes), font=font, fill=255) draw.text((76,36), textRate(currPIOutBytes), font=font, fill=255) #max rates draw.text((31,0), textRate(inMax), font=fontsmall, fill=255) draw.text((76,0), textRate(outMax), font=fontsmall, fill=255) draw.text((31,11), textRate(PIinMax), font=fontsmall, fill=255) draw.text((76,11), textRate(PIoutMax), font=fontsmall, fill=255) from urllib2 import urlopen my_ip = urlopen('http://ip.42.pl/raw').read() cmd = "top -bn1 | grep load | awk '{printf \"CPU: %.2f\", $(NF-2)}'" MemUsage = subprocess.check_output(cmd, shell = True ) my_ipp = str(MemUsage) myword = my_ip draw.text((31,54), myword, font=fontsmall, fill=255) # import json # import urllib2 # url="http://api.coindesk.com/v1/bpi/currentprice/GBP.json" # jsonURL=urllib2.urlopen(url) # jsonObject=json.load(jsonURL) # print jsonObject['bpi']['GBP']['code'] # print jsonObject['bpi']['GBP']['rate'] # draw.text((31,54), jsonObject['bpi']['GBP']['rate'], font=fontsmall, fill=255) disp.image(image) disp.display()
I’ve also added some python code to check your IP and to check the current bitcoin value. I have commented out the bitcoin, and plan to implement this another way.
Eventually I would like to have a bandwidth monitor and a bitcoin value checker on two separate buffers, and to then flip between the two buffers every ten seconds. This would not only be easier to read as I’d effectively double the screen space, but it would also lower the chance of getting screen burn (some people call it screen stamping.)
Make sure you download the adequate fonts and put them in the same directory as your python file. From there, run python nameofyourfile.py and ctrl + c to close.
For the OLED, I bought mine from Ebay. Make sure you get the wiring correct, sometimes the pins are in a different place.
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