Breaking changes

This release contains major breaking changes to metric names. Many metrics have new names, labels, and label values in order to conform to current naming conventions.

• Linux node_cpu metrics now break out guest values into separate metrics. See Issue #737
• Many counter metrics have been renamed to include _total.
• Many metrics have been renamed/modified to include base units, for example node_cpu is now node_cpu_seconds_total.

In order to help with backwards compatibility, a metric_relabel_config is being worked on to allow for easier transition of metric names. See: https://github.com/prometheus/node_exporter/issues/830

Other breaking changes:

• The megacli collector has been removed, is now replaced by the storcli.py textfile helper.

• The textfile collector will now treat timestamps as errors.

• [CHANGE] Split out guest cpu metrics on Linux. #744

• [CHANGE] Exclude Linux proc from filesystem type regexp #774

• [CHANGE] Ignore more virtual filesystems #775

• [CHANGE] Remove obsolete megacli collector. #798

• [CHANGE] Ignore /var/lib/docker by default. #814

• [CHANGE] Cleanup NFS metrics #834

• [CHANGE] Only report core throttles per core, not per cpu #836

• [CHANGE] Treat custom textfile metric timestamps as errors #769

• [CHANGE] Drop exec_ in boot_timestamp_seconds on *bsd #839

• [CHANGE] Use lowercase cpu label name in interrupts #849

• [FEATURE] Add collect[] parameter #699

• [FEATURE] Add text collector conversion for ipmitool output. #746

• [FEATURE] Add openbsd meminfo #724

• [FEATURE] Add systemd summary metrics #765

• [FEATURE] Add OpenBSD CPU collector #805

• [FEATURE] Add NFS Server metrics collector. #803

• [FEATURE] add sample directory size exporter #789

• [ENHANCEMENT] added Wear_Leveling_Count attribute to smartmon.sh script #707

• [ENHANCEMENT] Simplify Utsname string conversion #716

• [ENHANCEMENT] apt.sh: handle multiple origins in apt-get output #757

• [ENHANCEMENT] Export systemd timers last trigger seconds. #807

• [ENHANCEMENT] updates for zfsonlinux 0.7.5 #779

• [BUGFIX] Fix smartmon.sh textfile script #700

• [BUGFIX] netdev: Change valueType to CounterValue #749

• [BUGFIX] textfile: fix duplicate metrics error #738

• [BUGFIX] Fix panic by updating github.com/ema/qdisc dependency #778

• [BUGFIX] Use uint64 in the ZFS collector #714

• [BUGFIX] multiply page size after float64 coercion to avoid signed integer overflow #780

• [BUGFIX] smartmon: Escape double quotes in device model family #772

• [BUGFIX] Fix log level regression in #533 #815

• [BUGFIX] Correct the ClocksPerSec scaling factor on Darwin #846