[HICN-562] Add new options to VPP collectd plugins

Add two options to the vpp and vpp-hicn plugins:
* Verbose, to enable additional statistics
* Tag, to tag the data with a given string

Change-Id: Ifee6c979654f87a13787095dddab0076b218e334
Signed-off-by: Olivier Roques <oroques+fdio@cisco.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/docs/source/telemetry.md b/docs/source/telemetry.md
index 041c032b4..8887b8f1f 100644
--- a/docs/source/telemetry.md
+++ b/docs/source/telemetry.md
@@ -66,6 +66,11 @@ If you need the custom types that the two plugins define, they are present in
 the type database for multi-value metrics
 (see [CollectD protocol support in InfluxDB](https://docs.influxdata.com/influxdb/v1.7/supported_protocols/collectd/)).
 
+## Plugin options
+`vpp` and `vpp-hicn` have the same two options:
+- `Verbose` enables additional statistics. You can check the sources to have an exact list of available metrics.
+- `Tag` tags the data with the given string. Useful for identifying the context in which the data was retrieved in InfluxDB for instance. If the tag value is `None`, no tag is applied.
+
 ### Example: storing statistics from vpp and vpp-hicn
 
 We'll use the rrdtool and csv plugins to store statistics from vpp and vpp-hicn.
@@ -113,6 +118,16 @@ LoadPlugin vpp_hicn
 <Plugin rrdtool>
   DataDir "/var/lib/collectd/rrd"  # the folder where statistics are stored in rrd
 </Plugin>
+
+<Plugin vpp>
+  Verbose true
+  Tag "None"
+</Plugin>
+
+<Plugin vpp_hicn>
+  Verbose true
+  Tag "None"
+</Plugin>
 ```
 
 Run vpp and collectd: