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Benjamin Drung b6215e649c Add os release collector 
Currently Node Exporter has a metric called `node_uname_info` which of
course exposes uname info. While this is nice, it does not help if you
are running different OSes which could have similar uname info.

Therefore parse `/etc/os-release` or `/usr/lib/os-release` and expose a
`node_os_info` metric which provide information regarding the OS
release/version of the node. Also expose the major.minor part of the OS
release version as `node_os_version`.

Since the os-release files will not change often, cache the parsed
content and only refresh the cache if the modification time changes.

This `os` collector will read files outside of `/proc` and `/sys`, but
the os-release file is widely used and the format is standardized:
https://www.freedesktop.org/software/systemd/man/os-release.html

Bug: https://github.com/prometheus/node_exporter/issues/1574
Signed-off-by: Benjamin Drung <benjamin.drung@ionos.com>
2021-08-19 14:04:21 +02:00
..
fixtures Add os release collector 2021-08-19 14:04:21 +02:00
fixtures_bindmount/proc fix issue where rootfs path strips to the empty string (#1464) 2019-09-09 17:39:24 +02:00
fixtures_hidepid/proc Add fallback for missing /proc/1/mounts (#1172) 2018-11-30 14:01:55 +01:00
arp_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
bcache_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
bonding_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
bonding_linux_test.go Rearrange fixtures to match "real" proc and sys. 2015-09-28 13:56:22 +00:00
boot_time_bsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
boot_time_openbsd_amd64.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
boot_time_solaris.go Update go-kstat location 2021-07-06 11:44:18 +02:00
btrfs_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
btrfs_linux_test.go Add Btrfs collector (#1512) 2020-02-19 15:48:51 +01:00
buddyinfo.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
collector.go Update logic 2021-06-04 11:35:07 +02:00
conntrack_linux.go Fix conntrack collector log noise 2021-07-15 13:45:07 +02:00
cpu_common.go Fix capitalization of CPU acronym throughout 2020-09-03 23:34:33 +02:00
cpu_darwin.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
cpu_dragonfly.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
cpu_dragonfly_test.go Add test 2016-09-28 09:10:05 +02:00
cpu_freebsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
cpu_linux.go Add flag to disable guest CPU metrics 2021-08-17 13:04:46 +02:00
cpu_linux_test.go Handle small backwards jumps in CPU idle 2021-07-07 12:24:46 +02:00
cpu_openbsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
cpu_openbsd_amd64.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
cpu_solaris.go Update go-kstat location 2021-07-06 11:44:18 +02:00
cpufreq_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
cpufreq_solaris.go Update go-kstat location 2021-07-06 11:44:18 +02:00
devstat_dragonfly.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
devstat_freebsd.c Add missing license headers 2017-01-05 06:18:34 +01:00
devstat_freebsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
devstat_freebsd.h Add missing license headers 2017-01-05 06:18:34 +01:00
diskstats_common.go Add diskstats collector for OpenBSD (#1250) 2019-02-06 11:36:22 +01:00
diskstats_darwin.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
diskstats_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
diskstats_linux_test.go Add new counters for flush requests in Linux 5.5 (#1548) 2019-11-25 13:16:15 -06:00
diskstats_openbsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
diskstats_openbsd_amd64.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
drbd_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
edac_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
entropy_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
ethtool_linux.go ethtool: Expose node_ethtool_info metric 2021-08-16 16:09:35 +02:00
ethtool_linux_test.go ethtool: Expose node_ethtool_info metric 2021-08-16 16:09:35 +02:00
exec_bsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
fibrechannel_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
filefd_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
filefd_linux_test.go Fix scanner usage without error handling 2017-02-28 16:04:25 -04:00
filesystem_bsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
filesystem_common.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
filesystem_freebsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
filesystem_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
filesystem_linux_test.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
filesystem_openbsd_amd64.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
helper.go helper: Add new bytesToString function and tests 2020-06-03 11:33:10 +02:00
helper_test.go helper_test: Fix copyright year 2020-06-03 11:33:10 +02:00
hwmon_linux.go Merge pull request #1887 from prometheus/superq/promhttp_errorlog 2021-06-03 16:38:30 +02:00
infiniband_linux.go Add more IB counters 2021-07-06 11:15:32 -04:00
interrupts_common.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
interrupts_linux.go Use Go 1.13 error features 2020-06-16 14:47:03 +02:00
interrupts_linux_test.go Fix off by one in Linux interrupts collector (#721) 2017-11-02 09:59:46 +01:00
interrupts_openbsd.go fixed build 2020-11-12 23:37:56 +01:00
interrupts_openbsd_amd64.go move const values to iota plus code cleanup 2020-11-12 23:37:57 +01:00
ipvs_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
ipvs_linux_test.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
ksmd_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
kvm_bsd.c Move FreeBSD/DragonflyBSD out of meminfo add kvm. (#547) 2018-01-04 12:23:26 +01:00
kvm_bsd.go Fix collectors' build tags 2020-06-12 10:26:30 +02:00
kvm_bsd.h Move FreeBSD/DragonflyBSD out of meminfo add kvm. (#547) 2018-01-04 12:23:26 +01:00
loadavg.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
loadavg_bsd.go Implement loadavg on all BSDs without cgo (#1584) 2020-02-18 14:14:35 +01:00
loadavg_linux.go Use Go 1.13 error features 2020-06-16 14:47:03 +02:00
loadavg_linux_test.go Add load5 and load15 to linux load metric 2015-10-17 13:07:39 +00:00
loadavg_solaris.go Update go-kstat location 2021-07-06 11:44:18 +02:00
logind_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
logind_linux_test.go Fix all open go lint and vet issues 2017-02-28 13:05:38 -04:00
mdadm_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
meminfo.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
meminfo_darwin.go Fix up Darwin swap metrics 2020-02-19 15:52:47 +01:00
meminfo_linux.go Use Go 1.13 error features 2020-06-16 14:47:03 +02:00
meminfo_linux_test.go Make metrics better follow guidelines (#787) 2018-01-17 17:55:55 +01:00
meminfo_numa_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
meminfo_numa_linux_test.go Add Linux NUMA "numastat" metrics (#249) 2016-10-12 13:07:49 +02:00
meminfo_openbsd.go more build fixes 2020-11-12 23:37:56 +01:00
meminfo_openbsd_amd64.go Fix wrong value for OpenBSD memory buffer cache 2021-04-03 16:57:56 +02:00
memory_bsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
mountstats_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netclass_linux.go netclass: retrieve interface names and filter before parsing 2021-06-28 10:53:51 +02:00
netdev_bsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netdev_common.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netdev_darwin.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netdev_filter.go Move ignore/accept to new netDevFilter struct 2020-08-26 11:33:05 +02:00
netdev_filter_test.go Move ignore/accept to new netDevFilter struct 2020-08-26 11:33:05 +02:00
netdev_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netdev_linux_test.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netdev_openbsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netdev_openbsd_amd64.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netstat_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
netstat_linux_test.go Adds metrics and tests for UDP receive and send buffer errors (#1534) 2020-02-19 14:41:40 +01:00
network_route_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
nfs_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
nfsd_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
ntp.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
nvme_linux.go Add nvme collector 2021-07-06 13:38:15 +02:00
os_release.go Add os release collector 2021-08-19 14:04:21 +02:00
os_release_test.go Add os release collector 2021-08-19 14:04:21 +02:00
paths.go fix issue where rootfs path strips to the empty string (#1464) 2019-09-09 17:39:24 +02:00
paths_test.go Replace --collectors.enabled with per-collector flags (#640) 2017-09-28 15:06:26 +02:00
perf_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
perf_linux_test.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
powersupplyclass.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
pressure_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
processes_linux.go Fix processes collector long int parsing 2021-08-06 05:55:24 +02:00
processes_linux_test.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
qdisc_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
rapl_linux.go Fix rapl collector log noise 2021-07-21 19:28:54 +02:00
runit.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
schedstat_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
sockstat_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
softnet_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
stat_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
supervisord.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
sysctl_bsd.go Fix collectors' build tags 2020-06-12 10:26:30 +02:00
sysctl_openbsd_amd64.go skip null bytes at the end of strings 2020-11-12 23:37:57 +01:00
systemd_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
systemd_linux_test.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
tapestats_linux.go Add tapestats to collect tape devices statistics 2021-07-09 21:01:08 -03:00
tcpstat_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
tcpstat_linux_test.go Add gauges for allocated memory for queued UDP and TCP packages (#1503) 2020-03-31 10:46:32 +02:00
textfile.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
textfile_test.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
thermal_zone_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
time.go Add time zone offset metric 2021-07-01 11:25:53 +02:00
timex.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
udp_queues_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
uname.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
uname_bsd.go Extends uname collector to export on Darwin OS (#1433) 2019-08-03 12:32:43 +02:00
uname_linux.go collector: Implement uname collector for FreeBSD (#1239) 2019-02-05 17:39:24 +01:00
vmstat_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
wifi_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
xfs_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
zfs.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
zfs_freebsd.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
zfs_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00
zfs_linux_test.go Expose zfs zpool state 2020-10-27 17:39:13 +03:00
zfs_solaris.go Update go-kstat location 2021-07-06 11:44:18 +02:00
zoneinfo_linux.go Add ErrorLog plumbing to promhttp 2021-06-03 10:47:41 +02:00