prometheus/node_exporter

Breaking changes

• Renamed interface label to device in netclass collector for consistency with
  other network metrics #1224
• The cpufreq metrics now separate the cpufreq and scaling data based on what the driver provides. #1248
• The labels for the network_up metric have changed, see issue #1236
• Bonding collector now uses mii_status instead of operstatus #1124
• Several systemd metrics have been turned off by default to improve performance #1254
  These include unit_tasks_current, unit_tasks_max, service_restart_total, and unit_start_time_seconds
• The systemd collector blacklist now includes automount, device, mount, and slice units by default. #1255

Changes

• [CHANGE] Bonding state uses mii_status #1124
• [CHANGE] Add a limit to the number of in-flight requests #1166
• [CHANGE] Renamed interface label to device in netclass collector #1224
• [CHANGE] Add separate cpufreq and scaling metrics #1248
• [CHANGE] Several systemd metrics have been turned off by default to improve performance #1254
• [CHANGE] Expand systemd collector blacklist #1255
• [CHANGE] Split cpufreq metrics into a separate collector #1253
• [FEATURE] Add a flag to disable exporter metrics #1148
• [FEATURE] Add kstat-based Solaris metrics for boottime, cpu and zfs collectors #1197
• [FEATURE] Add uname collector for FreeBSD #1239
• [FEATURE] Add diskstats collector for OpenBSD #1250
• [FEATURE] Add pressure collector exposing pressure stall information for Linux #1174
• [FEATURE] Add perf exporter for Linux #1274
• [ENHANCEMENT] Add Infiniband counters #1120
• [ENHANCEMENT] Add TCPSynRetrans to netstat default filter #1143
• [ENHANCEMENT] Move network_up labels into new metric network_info #1236
• [ENHANCEMENT] Use 64-bit counters for Darwin netstat
• [BUGFIX] Add fallback for missing /proc/1/mounts #1172
• [BUGFIX] Fix node_textfile_mtime_seconds to work properly on symlinks #1326

Build note: Linux builds can now be built without CGO.

Breaking changes

supvervisord collector reports start_time_seconds rather than uptime #952

The wifi collector is disabled by default due to suspected caching issues and goroutine leaks.

• #870
• #1008

Darwin meminfo metrics have been renamed to match Prometheus conventions. #1060

Changes

• [CHANGE] Filter out non-installed units when collecting all systemd units #1011

• [CHANGE] service_restart_total and socket_refused_connections_total will not be reported if you're running an older version of systemd

• [CHANGE] Use /proc/mounts instead of statfs(2) for ro state #1002

• [CHANGE] collector/timex: remove cgo dependency #1079

• [CHANGE] filesystem: Ignore Docker netns mounts #1047

• [CHANGE] Ignore additional virtual filesystems #1104

• [FEATURE] Add netclass collector #851

• [FEATURE] Add processes collector #950

• [FEATURE] Collect start time for systemd units #952

• [FEATURE] Add socket unit stats to systemd collector #968

• [FEATURE] Collect NRestarts property for systemd service units #992

• [FEATURE] Collect NRefused property for systemd socket units (available as of systemd v239) #995

• [FEATURE] Allow removal of rootfs prefix for run in docker #1058

• [ENHANCEMENT] Support for octal characters in mountpoints #954

• [ENHANCEMENT] Update wifi stats to support multiple stations #980

• [ENHANCEMENT] Handle stuck NFS mounts #997

• [ENHANCEMENT] infiniband: Handle iWARP RDMA modules N/A #974

• [ENHANCEMENT] Update diskstats for linux kernel 4.19 #1109

• [BUGFIX] Fix FreeBSD CPU temp #965

• [BUGFIX] Fix goroutine leak in supervisord collector #978

• [BUGFIX] Fix mdadm collector issues #985

• [BUGFIX] Fix ntp collector thread safety #1014

• [BUGFIX] Systemd units will not be ignored if you're running older versions of systemd #1039

• [BUGFIX] Handle vanishing PIDs #1043

• [BUGFIX] Correctly cast Darwin memory info #1060

• [BUGFIX] Filter systemd units in Go for compatibility with older versions #1083

• [BUGFIX] Update cpu collector for OpenBSD 6.4 #1094

• [BUGFIX] Fix typo on HELP of read_time_seconds_total #1057

• [BUGFIX] collector/diskstats: don't fail if there are extra stats #1125

• [BUGFIX] collector/hwmon_linux: handle temperature sensor file #1123

• [BUGFIX] collector/filesystem: add bounds check #1133

• [BUGFIX] Fix dragonfly's CPU counting frequency #1140

• [BUGFIX] Add fallback for missing /proc/1/mounts #1172

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 the transition we have an upgrade guide.

Other breaking changes:

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

• The gmond collector has been removed.

• 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] Use lowercase cpu label name in interrupts #849

• [CHANGE] Enable bonding collector by default. #872

• [CHANGE] Greatly reduce the metrics vmstat returns by default. #874

• [CHANGE] Greatly trim what netstat collector exposes by default #876

• [CHANGE] Drop exec_ prefix and move node_boot_time_seconds from exec to new boottime collector and enable for Darwin/Dragonfly/FreeBSD/NetBSD/OpenBSD. #839, #901

• [CHANGE] Remove depreated gmond collector #852

• [CHANGE] align Darwin disk stat names with Linux #930

• [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

• [BUGFIX] Count core throttles per core and per package #871

• [BUGFIX] Fix netdev collector for linux #890 #910

• [BUGFIX] Fix memory corruption when number of filesystems > 16 on FreeBSD #900

• [BUGFIX] Fix parsing of interface aliases in netdev linux #904

• [BUGFIX] cpu: Support processor-less (memory-only) NUMA nodes #734