These release notes give an overview of the changes for Release 2020.10 of the Wavefront service. We also recently released a new version (6.1) of the Wavefront proxy. See the Wavefront Proxy Release Notes for details.
New Histogram Functions
This release includes the following new functions for managing histograms:
- frequencyHisto() converts a histogram that comes from Google Cloud Platform, Telegraf, or any other source to Wavefront histogram format.
- stddev() shows how the data in a histogram expression varies against the mean. Returns those values as a time series.
AWS Integration Changes
Trusted Adviser Service Limit Metrics
AWS Metrics+ Service Limit Metrics are now available in Wavefront.
- Users must at least have a Business Level AWS Support plan.
- Additional permissions are required. See Giving Wavefront Global Read-Only Access or Giving Wavefront Limited Access
For examples, see AWS Metrics+ Trusted Advisor Service Limits.
For sample alerts, see Alert Queries for AWS Trusted Advisor Service Limits
Changes to Required Permissions and CloudWatch API
If you are currently using an IAM Policy with Limited Access, review our changes to the Giving Wavefront Limited Access documentation.
Changes support more efficient and new APIs we are using. For example, in the next Wavefront release (2010.14.x) Wavefront will start querying Cloudwatch using
cloudwatch:GetMetricData API calls (instead of the older
cloudwatch:GetMetricStatistics API calls). As a result, we can fetch multiple metrics in one API call and significantly reduce the number of API calls for retrieving metrics from AWS.
Operators gt, lt, ge, le, eq, ne
The new operators allow you to easily filter on the query line. You can use multiple operators, for example, to find values that are between specified values, as in this example:
~collector Metrics Changes
This release includes a more fine-grained set of ~collector metrics, for example, we now support:
At the same time, we’ve removed the
~collector.*.valid metrics because the
~collector.*.reported metrics give more accurate results.