NOTE: We are deprecating several collectors in this release. * gmond - Out of scope. * megacli - Requires forking, to be moved to textfile collection. * ntp - Out of scope.

Breaking changes: * Collector errors are now a separate metric, node_scrape_collector_success, not a label on node_exporter_scrape_duration_seconds (#516)

• [CHANGE] Report collector success/failure as a bool metric, not a label. #516
• [FEATURE] Add loadavg collector for Solaris #311
• [FEATURE] Add StorCli text collector example script #320
• [FEATURE] Add collector for Linux EDAC #324
• [FEATURE] Add text file utility for SMART metrics #354
• [FEATURE] Add a collector for NFS client statistics. #360
• [FEATURE] Add mountstats collector for detailed NFS statistics #367
• [FEATURE] Add a collector for DRBD #365
• [FEATURE] Add cpu collector for darwin #391
• [FEATURE] Add netdev collector for darwin #393
• [FEATURE] Collect CPU temperatures on FreeBSD #397
• [FEATURE] Add ZFS collector #410
• [FEATURE] Add initial wifi collector #413
• [FEATURE] Add NFS event metrics to mountstats collector #415
• [FEATURE] Add an example rules file #422
• [FEATURE] infiniband: Add new collector for InfiniBand statistics #450
• [FEATURE] buddyinfo: Add support for /proc/buddyinfo for linux free memory fragmentation. #454
• [IMPROVEMENT] hwmon: Provide annotation metric to link chip sysfs paths to human-readable chip types #359
• [IMPROVEMENT] Add node_filesystem_device_errors_total metric #374
• [IMPROVEMENT] Add runit service dir flag #375
• [IMPROVEMENT] Improve Docker documentation #376
• [IMPROVEMENT] Ignore autofs filesystems on linux #384
• [IMPROVEMENT] Replace some FreeBSD collectors with pure Go versions #385
• [IMPROVEMENT] Use filename as label, move 'label' to own metric #411 (hwmon)
• [BUGFIX] mips64 build fix #361
• [BUGFIX] Update vendoring #372 (to fix #242)
• [BUGFIX] Convert remaining collectors to use ConstMetrics #389
• [BUGFIX] Check for errors in netdev scanner #398
• [BUGFIX] Don't leak or race in FreeBSD devstat collector #396
• [BUGFIX] Allow graceful failure in hwmon collector #427
• [BUGFIX] Fix the reporting of active+total disk metrics for inactive raids. #522