Merge pull request #754 from VladoLavor/release-1.5.1

Release vpp-agent v1.5.1

CHANGELOG.md

@@ -1,3 +1,16 @@
+# Release v1.5.1 (2018-07-20)
+- VPP 18.07-rc0~358-ga5ee900
+- cn-infra v1.4
+
+## New Features
+- [Telemetry](plugins/telemetry)
+  * Default polling interval was raised to 30s.
+  * Added option to use telemetry config file to change polling interval, or turn the polling off,
+  disabling the telemetry plugin. The change was added due to several reports where often polling 
+  is suspicious of interrupting VPP worker threads and causing packet drops and/or other 
+  negative impacts. More information how to use the config file can be found 
+  in the [readme](plugins/telemetry/README.md)
+
 # Release v1.5 (2018-07-16)
 
 ## Compatibility
@@ -6,6 +19,7 @@
 
 ## Breaking Changes
 - The package `etcdv3` was renamed to `etcd`, along with it's flag and configuration file.
+- The package `defaultplugins` was renamed to `vpp` to make the purpose of the package clear
 
 ## New Features
 - [LinuxPlugin](plugins/linux)

plugins/telemetry/README.md

@@ -4,7 +4,7 @@ The `telemetry` plugin is a core Agent Plugin for exporting telemetry
 statistics from VPP for Prometheus.
 
 Statistics are published via registry path `/vpp` on port `9191` and
-updated every 5 seconds.
+updated every 30 seconds.
 
 ### Exported data
 
@@ -185,4 +185,12 @@ updated every 5 seconds.
     vpp_node_counter_count{agent="agent1",item="ip4-icmp-input",reason="unknown type"} 3358
     vpp_node_counter_count{agent="agent1",item="ipsec-input-ip4",reason="IPSEC pkts received"} 128027
     vpp_node_counter_count{agent="agent1",item="ipsec-output-ip4",reason="IPSec policy protect"} 124669
-    ```
+    ```
+    
+### Configuration file
+
+Telemetry plugin configuration file allows to change polling interval, or turn the polling off. 
+
+`polling-interval` is time in nanoseconds between reads from the VPP.
+
+`disabled` can be set to `true` in order to disable the plugin.