Hawkular-Metrics 0.7.0 发布，此版本主要改进：counter metrics；更新的 tag 支持；性能和稳定性提升。
主要改进
Cassandra 升级
数据存储要求 Cassandra version 2.2.x
更新对 counter metrics 的支持
Counter raw data and rate data now support buckets similar to the way gauge data does (HWKMETRICS-280, HWKMETRICS-283)
The same query parameters as gauge metrics are supported.
Tagging functionality (add, delete, update) is now identical to availability and gauge metrics.
Revamped tag functionality
Tag support has been updated to have identical functionality across all metric types.
Tagging data points is no longer supported; however, this functionality may resurface when requirements are better understood and there is a real use case around it (HWKMETRICS-247)
Improved metric tag storage and querying; metric tags are no longer stored in the data table (HWKMETRICS-254)
数据存储升级
Schema changes will require rebuilding database
Interval column has been removed from all tables (HWKMETRICS-3)
Stop the warning message in Cassandra log about batch statement size threshold being exceeded (HWKMETRICS-252)
System-wide data retention default setting is now configurable via system property (HWKMETRICS-251)
Data retention can be set during tenant creation (HWKMETRICS-127)
Influx endpoint
time_precision parameter is now supported (Hawkular Metrics does not support microseconds precision though)
integer "overflow" fixes; long integers are now used where needed
time range restrictions support values without unit (i.e. 'time > 1010101010')
PTrans
logback replaces log4j as logging backend
REST API documentation
Improved documentation (no more broken links, more details on parameters and data types)
http://www.hawkular.org/docs/rest/rest-metrics.html
发布链接
Github Release:
https://github.com/hawkular/hawkular-metrics/releases/tag/0.7.0
JBoss Nexus Maven artifacts:
http://origin-repository.jboss.org/nexus/content/repositories/public/org/hawkular/metrics/
Jira release tracker:
https://issues.jboss.org/browse/HWKMETRICS/fixforversion/12327874/
Hawkular Metrics 客户端
Ruby: https://github.com/hawkular/hawkular-client-ruby
Python: https://github.com/hawkular/hawkular-client-python
Go: https://github.com/hawkular/hawkular-client-go
Hawkular 是一个开源的监控解决方案，是 RHQ 项目 的改进版本，受益于多年的经验，Hawkular 设计之初就考虑模块化和可伸缩性，因此组件可在应用之外进行重用。Hawkular 可以接收来自不同源的监控数据，包括 collectd、gmond 等等。
Hawkular 可以让你以应用为中心的视图对整个可连接资源的架构进行监控，并可以很入到应用中某个单独资源进行浏览。
软件详情：http://www.hawkular.org/blog/2015/09/30/hawkular-metrics-0.7.0.Final-released.html
来自:开源中国社区
