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.

• https://github.com/prometheus/node_exporter/issues/870
• https://github.com/prometheus/node_exporter/issues/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