dgn2200v3-network_monitor

Collection of scripts and instructions to set up rrdtool on Netgear DGN2200v3 router

Disclaimer

The scripts supplied, as the build instructions, are not guaranteed to work, and may be full of bugs (and probably they are), but worked to me. Your are the only responsible for your device, so use them at your own risk.

Requirements

• Netgear toolchain (tested with 1.1.00.21 version)
• rrdtool source (tested with 1.4.8 version)
• make=3.81
• texinfo<5

Optional dependencies

• tar, wget, nano/vi compiled for MIPS. Will simplify the install process dramatically.

Setup

• Unpack and build toolchain (instructions in the README supplied), using toolchain.config as .config file.
• Unpack, make && make install kernel and source, also in the toolchain package (if you are running linux>2.6 you'll need to edit Kernel/bcm963xx/make.common, e.g. setting KERNEL_VERSION := 2.6)
• Build rrdtool

  $ export version=4.4.2-1
  $ export PREFIX=/opt/toolchains/uclibc-crosstools-gcc-${version}
  $ export TARGET=mips-linux-uclibc
  $ export TOOLCHAIN=${PREFIX}/usr/bin/${TARGET}
  $ export CC=$PREFIX-gcc
  $ export LD=$PREFIX-ld   # export others, if needed
  $ export rrdtool_version=1.4.8
  $ wget http://oss.oetiker.ch/rrdtool/pub/rrdtool-${rrdtool_version}.tar.gz
  $ tar -xzf rrdtool-${rrdtool_version}
  $ cd rrdtool-${rrdtool_version}
  $ CPPFLAGS="-I/$PREFIX/usr/include/cairo -I/$PREFIX/usr/include/libpng12  --sysroot=$PREFIX" \
	./configure --prefix=/opt/rrdtool --host=$TARGET --disable-tcl --disable-python
  $ make
  # make install

Now you will need to connect to the router's shell via telnet. You will need to unlock it visiting router's debug page (192.168.0.1/setup.cgi?todo=debug)

• Remount target's / rw

  # mount -o remount,rw /

• Optionally copy tar, wget, nano/vi to the router (aka the 'target')
• Copy /opt/rrdtool/{bin,lib} to the target (e.g. via usb drive or wget/ftp)
• Copy libs below from $PREFIX/usr/lib to /opt/rrdtool/lib (or /lib) to the target:

  libcairo.so.2.17.5
  libexpat.so.1.5.2
  libfontconfig.so.1.3.0
  libfreetype.so.6.3.20
  libglib-2.0.so.0.2000.5
  libgmodule-2.0.so.0.2000.5
  libgobject-2.0.so.0.2000.5
  libiconv.so.2.4.0
  libintl.so.8.0.1
  libpango-1.0.so.0.2002.3
  libpangocairo-1.0.so.0.2002.3
  libpangoft2-1.0.so.0.2002.3
  libpixman-1.so.0.10.0	
  librrd.so.4.2.1
  librrd_th.so.4.2.1
  libxml2.so.2.7.3

• Make symlinks for all the libraries, e.g.

  # ln -s libcairo.so.2.17.5 libcairo.so.2

• Copy pango-basic-fc.so from $PREFIX/usr/lib/pango/1.6.0/modules to /usr/lib/pango/1.6.0/modules on target.
• Copy pango-querymodules from $PREFIX/usr/bin and execute pango-querymodules > '/etc/pango/pango.modules'.
• Copy DejaVuSansMono.ttf (or any other TTF font you like) from your system to /usr/share/fonts/TTF.
• Copy files from this repo to a directory of your liking on the target (e.g. /opt/rrdtool/scripts).
• Make a directory for output graphs

  # mkdir /tmp/www/rrdtool

• Copy rrdtool.htm to /tmp/www/ or /www.eng/

Usage

• Configure nas1.conf (you can rename it if you like).
• Run ./create_rrd.sh ./nas1.conf once to create rr database.
• Run ./poll_stats.sh ./nas1.conf every minute (or less) to poll the database.
• Run ./print_graph_*.sh ./nas1.conf every now and then to create png's (default every 1, 5, 30, 120 minutes and 1 day, respectively).

To run scripts periodically you can use target's cron, or the cronlike.sh script supplied.

To view the graphs just point your browser to http://192.168.0.1/rrdtool.htm