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# Telemetry
Tools to collect telemetry from hICN forwarders.
## Introduction
The project contains two plugins for [collectd](https://github.com/collectd/collectd):
* vpp: to collect statistics for VPP
* vpp-hicn: to collect statistics for [hICN](https://github.com/FDio/hicn)
Currently the two plugins provide the following functionalities:
* vpp: statistics (rx/tx bytes and packets) for each available interface.
* vpp-hicn: statistics (rx/tx bytes and packets) for each available face.
## Quick start
From the code tree root:
```bash
cd telemetry
mkdir -p build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/usr
make
sudo make install
```
## Using hICN collectd plugins
### Platforms
hICN collectd plugins have been tested in:
- Ubuntu 16.04 LTS (x86_64)
- Ubuntu 18.04 LTS (x86_64)
- Debian Stable/Testing
- Red Hat Enterprise Linux 7
- CentOS 7
### Dependencies
Build dependencies:
- VPP 20.01
- DEB packages (can be found https://packagecloud.io/fdio/release/install):
- vpp
- libvppinfra-dev
- vpp-dev
- hicn-plugin-dev
## Getting started
Collectd needs to be configured in order to use the hICN collectd plugins.
The configuration can be achieved editing the file '/etc/collectd/collectd.conf'
and adding the following lines:
```
LoadPlugin vpp
LoadPlugin vpp_hicn
```
Before running collectd, a vpp forwarder must be started. If the vpp-hicn plugin
is used, the hicn-plugin must be available in the vpp forwarder.
### Example: storing statistics from vpp and vpp-hicn
We'll use the rrdtool and csv plugins to store statistics from vpp and vpp-hicn.
Edit the configuration file as the following:
```html
######################################################################
# Global #
######################################################################
FQDNLookup true
BaseDir "/collectd"
Interval 1
######################################################################
# Logging #
######################################################################
LoadPlugin logfile
<Plugin logfile>
LogLevel "info"
File "/var/log/collectd.log"
Timestamp true
PrintSeverity true
</Plugin>
######################################################################
# Plugins #
######################################################################
LoadPlugin csv
LoadPlugin rrdtool
LoadPlugin vpp
LoadPlugin vpp_hicn
######################################################################
# Plugin configuration #
######################################################################
<Plugin csv>
DataDir "/collectd/csv" # the folder under which statistics are written in csv
StoreRates true
</Plugin>
<Plugin rrdtool>
DataDir "/collectd/rrd" # the folder under which statistics are written in rrd
</Plugin>
```
Run vpp and collectd:
```
systemctl start vpp
systemctl start collectd
```
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