Bandwidthd

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bandwidthd can be used to check bandwidth usage by each IP on a gateway or proxy machine for monitoring purposes. To install bandwidthd use following steps:

1. Configure all repositories such as rpmfusion, repoforge, etc. (esp. epel)
2. yum -y install bandwidthd
3. yum -y install httpd mod_ssl php php-gd
4. vim /etc/bandwidth.conf
   1. Ensure that subnets are correct
   2. Set correct device named eg "dev venet0", "dev eth1", etc.
   3. Update "output_cdf true" to store data in cdf file on stop
   4. Update "recover_cdf true" to read back the cdf file on startup
5. service bandwidthd start
6. service httpd restart
7. chkconfig bandwidthd on
8. chkconfig httpd on
9. Open http://192.168.122.102/bandwidthd/ to see the bandwidth usage graph

To restrict access to bandwidthd to administrators use:

1. Edit /etc/httpd/conf.d/bandwidthd.conf and append

   <Directory "/var/www/bandwidthd/htdocs">
   Order Allow,Deny
   Allow from All
   </Directory>

   Here replace "Allow from All" appropriately

Need to restart bandwidthd frequently as it crashes too often

To restart bandwidhtd every hour to take care of its crashes, create '/etc/cron.hourly/restart_bandwidthd.sh' with following contents:

#!/bin/bash

systemctl restart bandwidthd

Do "chmod +x /etc/cron.hourly/restart_bandwidthd.sh".

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