Cut 0.9.0 release

Includes many PRs:
* #10
* #12
* #14
* #15
* #17
* #19
* #20
* #21
* #22

CHANGELOG.md

@@ -1,3 +1,17 @@
+## 0.3.0 / 2015-08-31
+
+BREAKING CHANGES: Most metrics have been renamed with Prometheus Subsystem names
+                  to avoid conflicts between different collection methods.
+
+* [BUGFIX] Separate slave_status and global_status into separate subsystems.
+* [IMPROVEMENT] Refactor metrics creation.
+* [IMPROVEMENT] Add support for performance_schema.table_io_waits_summary_by_table collection.
+* [IMPROVEMENT] Add support for performance_schema.table_io_waits_summary_by_index_usage collection.
+* [IMPROVEMENT] Add support for performance_schema.events_statements_summary_by_digest collection.
+* [IMPROVEMENT] Add support for Percona userstats output collection.
+* [IMPROVEMENT] Add support for auto_increment column metrics collection.
+* [IMPROVEMENT] Add support for `SHOW GLOBAL VARIABLES` metrics collection.
+
 ## 0.2.0 / 2015-06-24
 
 BREAKING CHANGES: Logging-related flags have changed. Metric names have changed.

README.md

@@ -2,6 +2,7 @@
 
 Prometheus exporter for MySQL server metrics.
 Supported MySQL versions: 5.1 and up.
+NOTE: Not all collection methods are support on MySQL < 5.6
 
 ## Building and running
 
@@ -11,10 +12,19 @@ Supported MySQL versions: 5.1 and up.
 
 ### Flags
 
-Name               | Description
--------------------|------------
-web.listen-address | Address to listen on for web interface and telemetry.
-web.telemetry-path | Path under which to expose metrics.
+Name                                       | Description
+-------------------------------------------|------------------------------------------------------------------------------------
+collect.auto_increment.columns             | Collect auto_increment columns and max values from information_schema.
+collect.info_schema.userstats              | If running with userstat=1, set to true to collect user statistics.
+collect.perf_schema.eventsstatements       | Collect time metrics from performance_schema.events_statements_summary_by_digest.
+collect.perf_schema.eventsstatements.limit | Limit the number of events statements digests by response time. (default: 250)
+collect.perf_schema.indexiowaits           | Collect metrics from performance_schema.table_io_waits_summary_by_index_usage.
+collect.perf_schema.indexiowaitstime       | Collect time metrics from performance_schema.table_io_waits_summary_by_index_usage.
+collect.perf_schema.tableiowaits           | Collect metrics from performance_schema.table_io_waits_summary_by_table.
+collect.perf_schema.tableiowaitstime       | Collect time metrics from performance_schema.table_io_waits_summary_by_table.
+log.level                                  | Logging verbosity (default: info)
+web.listen-address                         | Address to listen on for web interface and telemetry.
+web.telemetry-path                         | Path under which to expose metrics.
 
 ### Setting the MySQL server's data source name