1. SmokePing

2. Overview Network monitoring IP address, hostname Network services e.g. DNS, SMTP, HTTP Latency measurement Round trip delay time Historical data graphing Email Alerts

3. How It Works Several test packets are sent to a target and the time taken for them to return is measured. (Default is 20 pings every 5 minutes) The measurements are stored in RRD (Round Robin Database) files. The round trip times are sorted and the median is selected.

4. How It Works The measurements are graphed, where the median is represented by a coloured line. This is also coloured according to packet loss. The rest of the measurements are drawn in successively lighter shades of grey (the smoke).

5. Debian Package Versions smokeping2.6.8 nginx1.2.1 rrdtool1.4.7 fcgiwrap1.0.3 fping3.2 echoping6.0.2 perl5.14.2

6. Installation on Debian 7 Required packages # aptitude –R install smokeping nginx- full fcgiwrap echoping rrdtool (-R, --without-recommends – so apache isn’t installed) The packages pulled in are sufficient for a minimal setup.

7. Configure nginx /etc/nginx/sites-available/default server {... location /cgi-bin/ { gzip off; root /usr/lib; fastcgi_pass unix:/var/run/fcgiwrap.socket; include /etc/nginx/fastcgi_params; fastcgi_param SCRIPT_FILENAME /usr/lib$fastcgi_script_name; } location /smokeping/images/ { root /var/cache; }... }

8. Configure smokeping /etc/smokeping/config.d/General owner = James Pinkster contact = jamespi75@gmail.com mailhost = mail.example.net.au /etc/smokeping/config.d/pathnames imgurl = /smokeping/images /etc/smokeping/config.d/Targets... remark = Your welcome message here... + LocalNet menu = LocalNet title = Network name ++ Hostname1 host = server1.example.com ++ Hostname2 host = server2.example.com

9. Tips  Target firewall must allow ICMP ping request/response  To move an.rrd file to another location. Use rrdtool dump to export and rrdtool restore to import

10. Links Smokeping homepage http://smokeping.org Useful links http://wiki.nginx.org/Fcgiwrap https://github.com/oetiker/SmokePing/issues/11 https://nginx.localdomain.pl/wiki/FcgiWrap https://wiki.debian.org/nginx/FastCGI https://wiki.debian.org/nginx/FastCGI RRDtool http://oss.oetiker.ch/rrdtool

11. Demo