Merge pull request #410 from joehandzik/master

Add ZFS collector + review feedback from PRs 213 and 369
This commit is contained in:
Johannes 'fish' Ziemke 2017-01-09 18:40:54 +01:00 committed by GitHub
commit e9cea11553
9 changed files with 617 additions and 2 deletions

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@ -15,6 +15,8 @@ The following individuals have contributed code to this repository
* Benjamin Staffin <benley@gmail.com>
* Björn Rabenstein <beorn@soundcloud.com>
* Brian Brazil <brian.brazil@boxever.com>
* Christian Schwarz
* Corey Stewart <stewa169@purdue.edu>
* Daniel Speichert <daniel@speichert.pro>
* Ed Schouten <ed@kumina.nl>
* Eric Ripa
@ -23,6 +25,7 @@ The following individuals have contributed code to this repository
* Ian Hansen
* Ilia Choly <ilia.choly@gmail.com>
* Jari Takkala <jtakkala@gmail.com>
* Joe Handzik <joseph.t.handzik@hpe.com>
* Johannes 'fish' Ziemke <github@freigeist.org>
* Jonas Große Sundrup <cherti@letopolis.de>
* Julius Volz <julius.volz@gmail.com>

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@ -34,7 +34,7 @@ stat | Exposes various statistics from `/proc/stat`. This includes CPU usage, bo
textfile | Exposes statistics read from local disk. The `--collector.textfile.directory` flag must be set. | _any_
time | Exposes the current system time. | _any_
vmstat | Exposes statistics from `/proc/vmstat`. | Linux
zfs | Exposes [ZFS](http://open-zfs.org/) performance statistics.<br/> Linux (ARC) | [Linux](http://zfsonlinux.org/)
### Disabled by default

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@ -1934,6 +1934,279 @@ node_sockstat_sockets_used 229
# HELP node_textfile_scrape_error 1 if there was an error opening or reading a file, 0 otherwise
# TYPE node_textfile_scrape_error gauge
node_textfile_scrape_error 0
# HELP node_zfsArc_anon_evictable_data kstat.zfs.misc.arcstats.anon_evictable_data
# TYPE node_zfsArc_anon_evictable_data untyped
node_zfsArc_anon_evictable_data 0
# HELP node_zfsArc_anon_evictable_metadata kstat.zfs.misc.arcstats.anon_evictable_metadata
# TYPE node_zfsArc_anon_evictable_metadata untyped
node_zfsArc_anon_evictable_metadata 0
# HELP node_zfsArc_anon_size kstat.zfs.misc.arcstats.anon_size
# TYPE node_zfsArc_anon_size untyped
node_zfsArc_anon_size 1.91744e+06
# HELP node_zfsArc_arc_loaned_bytes kstat.zfs.misc.arcstats.arc_loaned_bytes
# TYPE node_zfsArc_arc_loaned_bytes untyped
node_zfsArc_arc_loaned_bytes 0
# HELP node_zfsArc_arc_meta_limit kstat.zfs.misc.arcstats.arc_meta_limit
# TYPE node_zfsArc_arc_meta_limit untyped
node_zfsArc_arc_meta_limit 6.275982336e+09
# HELP node_zfsArc_arc_meta_max kstat.zfs.misc.arcstats.arc_meta_max
# TYPE node_zfsArc_arc_meta_max untyped
node_zfsArc_arc_meta_max 4.49286096e+08
# HELP node_zfsArc_arc_meta_min kstat.zfs.misc.arcstats.arc_meta_min
# TYPE node_zfsArc_arc_meta_min untyped
node_zfsArc_arc_meta_min 1.6777216e+07
# HELP node_zfsArc_arc_meta_used kstat.zfs.misc.arcstats.arc_meta_used
# TYPE node_zfsArc_arc_meta_used untyped
node_zfsArc_arc_meta_used 3.08103632e+08
# HELP node_zfsArc_arc_need_free kstat.zfs.misc.arcstats.arc_need_free
# TYPE node_zfsArc_arc_need_free untyped
node_zfsArc_arc_need_free 0
# HELP node_zfsArc_arc_no_grow kstat.zfs.misc.arcstats.arc_no_grow
# TYPE node_zfsArc_arc_no_grow untyped
node_zfsArc_arc_no_grow 0
# HELP node_zfsArc_arc_prune kstat.zfs.misc.arcstats.arc_prune
# TYPE node_zfsArc_arc_prune untyped
node_zfsArc_arc_prune 0
# HELP node_zfsArc_arc_sys_free kstat.zfs.misc.arcstats.arc_sys_free
# TYPE node_zfsArc_arc_sys_free untyped
node_zfsArc_arc_sys_free 2.61496832e+08
# HELP node_zfsArc_arc_tempreserve kstat.zfs.misc.arcstats.arc_tempreserve
# TYPE node_zfsArc_arc_tempreserve untyped
node_zfsArc_arc_tempreserve 0
# HELP node_zfsArc_c kstat.zfs.misc.arcstats.c
# TYPE node_zfsArc_c untyped
node_zfsArc_c 1.643208777e+09
# HELP node_zfsArc_c_max kstat.zfs.misc.arcstats.c_max
# TYPE node_zfsArc_c_max untyped
node_zfsArc_c_max 8.367976448e+09
# HELP node_zfsArc_c_min kstat.zfs.misc.arcstats.c_min
# TYPE node_zfsArc_c_min untyped
node_zfsArc_c_min 3.3554432e+07
# HELP node_zfsArc_data_size kstat.zfs.misc.arcstats.data_size
# TYPE node_zfsArc_data_size untyped
node_zfsArc_data_size 1.29583616e+09
# HELP node_zfsArc_deleted kstat.zfs.misc.arcstats.deleted
# TYPE node_zfsArc_deleted untyped
node_zfsArc_deleted 60403
# HELP node_zfsArc_demand_data_hits kstat.zfs.misc.arcstats.demand_data_hits
# TYPE node_zfsArc_demand_data_hits untyped
node_zfsArc_demand_data_hits 7.221032e+06
# HELP node_zfsArc_demand_data_misses kstat.zfs.misc.arcstats.demand_data_misses
# TYPE node_zfsArc_demand_data_misses untyped
node_zfsArc_demand_data_misses 73300
# HELP node_zfsArc_demand_metadata_hits kstat.zfs.misc.arcstats.demand_metadata_hits
# TYPE node_zfsArc_demand_metadata_hits untyped
node_zfsArc_demand_metadata_hits 1.464353e+06
# HELP node_zfsArc_demand_metadata_misses kstat.zfs.misc.arcstats.demand_metadata_misses
# TYPE node_zfsArc_demand_metadata_misses untyped
node_zfsArc_demand_metadata_misses 498170
# HELP node_zfsArc_duplicate_buffers kstat.zfs.misc.arcstats.duplicate_buffers
# TYPE node_zfsArc_duplicate_buffers untyped
node_zfsArc_duplicate_buffers 0
# HELP node_zfsArc_duplicate_buffers_size kstat.zfs.misc.arcstats.duplicate_buffers_size
# TYPE node_zfsArc_duplicate_buffers_size untyped
node_zfsArc_duplicate_buffers_size 0
# HELP node_zfsArc_duplicate_reads kstat.zfs.misc.arcstats.duplicate_reads
# TYPE node_zfsArc_duplicate_reads untyped
node_zfsArc_duplicate_reads 0
# HELP node_zfsArc_evict_l2_cached kstat.zfs.misc.arcstats.evict_l2_cached
# TYPE node_zfsArc_evict_l2_cached untyped
node_zfsArc_evict_l2_cached 0
# HELP node_zfsArc_evict_l2_eligible kstat.zfs.misc.arcstats.evict_l2_eligible
# TYPE node_zfsArc_evict_l2_eligible untyped
node_zfsArc_evict_l2_eligible 8.99251456e+09
# HELP node_zfsArc_evict_l2_ineligible kstat.zfs.misc.arcstats.evict_l2_ineligible
# TYPE node_zfsArc_evict_l2_ineligible untyped
node_zfsArc_evict_l2_ineligible 9.92552448e+08
# HELP node_zfsArc_evict_l2_skip kstat.zfs.misc.arcstats.evict_l2_skip
# TYPE node_zfsArc_evict_l2_skip untyped
node_zfsArc_evict_l2_skip 0
# HELP node_zfsArc_evict_not_enough kstat.zfs.misc.arcstats.evict_not_enough
# TYPE node_zfsArc_evict_not_enough untyped
node_zfsArc_evict_not_enough 680
# HELP node_zfsArc_evict_skip kstat.zfs.misc.arcstats.evict_skip
# TYPE node_zfsArc_evict_skip untyped
node_zfsArc_evict_skip 2.265729e+06
# HELP node_zfsArc_hash_chain_max kstat.zfs.misc.arcstats.hash_chain_max
# TYPE node_zfsArc_hash_chain_max untyped
node_zfsArc_hash_chain_max 3
# HELP node_zfsArc_hash_chains kstat.zfs.misc.arcstats.hash_chains
# TYPE node_zfsArc_hash_chains untyped
node_zfsArc_hash_chains 412
# HELP node_zfsArc_hash_collisions kstat.zfs.misc.arcstats.hash_collisions
# TYPE node_zfsArc_hash_collisions untyped
node_zfsArc_hash_collisions 50564
# HELP node_zfsArc_hash_elements kstat.zfs.misc.arcstats.hash_elements
# TYPE node_zfsArc_hash_elements untyped
node_zfsArc_hash_elements 42359
# HELP node_zfsArc_hash_elements_max kstat.zfs.misc.arcstats.hash_elements_max
# TYPE node_zfsArc_hash_elements_max untyped
node_zfsArc_hash_elements_max 88245
# HELP node_zfsArc_hdr_size kstat.zfs.misc.arcstats.hdr_size
# TYPE node_zfsArc_hdr_size untyped
node_zfsArc_hdr_size 1.636108e+07
# HELP node_zfsArc_hits kstat.zfs.misc.arcstats.hits
# TYPE node_zfsArc_hits untyped
node_zfsArc_hits 8.772612e+06
# HELP node_zfsArc_l2_abort_lowmem kstat.zfs.misc.arcstats.l2_abort_lowmem
# TYPE node_zfsArc_l2_abort_lowmem untyped
node_zfsArc_l2_abort_lowmem 0
# HELP node_zfsArc_l2_asize kstat.zfs.misc.arcstats.l2_asize
# TYPE node_zfsArc_l2_asize untyped
node_zfsArc_l2_asize 0
# HELP node_zfsArc_l2_cdata_free_on_write kstat.zfs.misc.arcstats.l2_cdata_free_on_write
# TYPE node_zfsArc_l2_cdata_free_on_write untyped
node_zfsArc_l2_cdata_free_on_write 0
# HELP node_zfsArc_l2_cksum_bad kstat.zfs.misc.arcstats.l2_cksum_bad
# TYPE node_zfsArc_l2_cksum_bad untyped
node_zfsArc_l2_cksum_bad 0
# HELP node_zfsArc_l2_compress_failures kstat.zfs.misc.arcstats.l2_compress_failures
# TYPE node_zfsArc_l2_compress_failures untyped
node_zfsArc_l2_compress_failures 0
# HELP node_zfsArc_l2_compress_successes kstat.zfs.misc.arcstats.l2_compress_successes
# TYPE node_zfsArc_l2_compress_successes untyped
node_zfsArc_l2_compress_successes 0
# HELP node_zfsArc_l2_compress_zeros kstat.zfs.misc.arcstats.l2_compress_zeros
# TYPE node_zfsArc_l2_compress_zeros untyped
node_zfsArc_l2_compress_zeros 0
# HELP node_zfsArc_l2_evict_l1cached kstat.zfs.misc.arcstats.l2_evict_l1cached
# TYPE node_zfsArc_l2_evict_l1cached untyped
node_zfsArc_l2_evict_l1cached 0
# HELP node_zfsArc_l2_evict_lock_retry kstat.zfs.misc.arcstats.l2_evict_lock_retry
# TYPE node_zfsArc_l2_evict_lock_retry untyped
node_zfsArc_l2_evict_lock_retry 0
# HELP node_zfsArc_l2_evict_reading kstat.zfs.misc.arcstats.l2_evict_reading
# TYPE node_zfsArc_l2_evict_reading untyped
node_zfsArc_l2_evict_reading 0
# HELP node_zfsArc_l2_feeds kstat.zfs.misc.arcstats.l2_feeds
# TYPE node_zfsArc_l2_feeds untyped
node_zfsArc_l2_feeds 0
# HELP node_zfsArc_l2_free_on_write kstat.zfs.misc.arcstats.l2_free_on_write
# TYPE node_zfsArc_l2_free_on_write untyped
node_zfsArc_l2_free_on_write 0
# HELP node_zfsArc_l2_hdr_size kstat.zfs.misc.arcstats.l2_hdr_size
# TYPE node_zfsArc_l2_hdr_size untyped
node_zfsArc_l2_hdr_size 0
# HELP node_zfsArc_l2_hits kstat.zfs.misc.arcstats.l2_hits
# TYPE node_zfsArc_l2_hits untyped
node_zfsArc_l2_hits 0
# HELP node_zfsArc_l2_io_error kstat.zfs.misc.arcstats.l2_io_error
# TYPE node_zfsArc_l2_io_error untyped
node_zfsArc_l2_io_error 0
# HELP node_zfsArc_l2_misses kstat.zfs.misc.arcstats.l2_misses
# TYPE node_zfsArc_l2_misses untyped
node_zfsArc_l2_misses 0
# HELP node_zfsArc_l2_read_bytes kstat.zfs.misc.arcstats.l2_read_bytes
# TYPE node_zfsArc_l2_read_bytes untyped
node_zfsArc_l2_read_bytes 0
# HELP node_zfsArc_l2_rw_clash kstat.zfs.misc.arcstats.l2_rw_clash
# TYPE node_zfsArc_l2_rw_clash untyped
node_zfsArc_l2_rw_clash 0
# HELP node_zfsArc_l2_size kstat.zfs.misc.arcstats.l2_size
# TYPE node_zfsArc_l2_size untyped
node_zfsArc_l2_size 0
# HELP node_zfsArc_l2_write_bytes kstat.zfs.misc.arcstats.l2_write_bytes
# TYPE node_zfsArc_l2_write_bytes untyped
node_zfsArc_l2_write_bytes 0
# HELP node_zfsArc_l2_writes_done kstat.zfs.misc.arcstats.l2_writes_done
# TYPE node_zfsArc_l2_writes_done untyped
node_zfsArc_l2_writes_done 0
# HELP node_zfsArc_l2_writes_error kstat.zfs.misc.arcstats.l2_writes_error
# TYPE node_zfsArc_l2_writes_error untyped
node_zfsArc_l2_writes_error 0
# HELP node_zfsArc_l2_writes_lock_retry kstat.zfs.misc.arcstats.l2_writes_lock_retry
# TYPE node_zfsArc_l2_writes_lock_retry untyped
node_zfsArc_l2_writes_lock_retry 0
# HELP node_zfsArc_l2_writes_sent kstat.zfs.misc.arcstats.l2_writes_sent
# TYPE node_zfsArc_l2_writes_sent untyped
node_zfsArc_l2_writes_sent 0
# HELP node_zfsArc_memory_direct_count kstat.zfs.misc.arcstats.memory_direct_count
# TYPE node_zfsArc_memory_direct_count untyped
node_zfsArc_memory_direct_count 542
# HELP node_zfsArc_memory_indirect_count kstat.zfs.misc.arcstats.memory_indirect_count
# TYPE node_zfsArc_memory_indirect_count untyped
node_zfsArc_memory_indirect_count 3006
# HELP node_zfsArc_memory_throttle_count kstat.zfs.misc.arcstats.memory_throttle_count
# TYPE node_zfsArc_memory_throttle_count untyped
node_zfsArc_memory_throttle_count 0
# HELP node_zfsArc_metadata_size kstat.zfs.misc.arcstats.metadata_size
# TYPE node_zfsArc_metadata_size untyped
node_zfsArc_metadata_size 1.7529856e+08
# HELP node_zfsArc_mfu_evictable_data kstat.zfs.misc.arcstats.mfu_evictable_data
# TYPE node_zfsArc_mfu_evictable_data untyped
node_zfsArc_mfu_evictable_data 1.017613824e+09
# HELP node_zfsArc_mfu_evictable_metadata kstat.zfs.misc.arcstats.mfu_evictable_metadata
# TYPE node_zfsArc_mfu_evictable_metadata untyped
node_zfsArc_mfu_evictable_metadata 9.163776e+06
# HELP node_zfsArc_mfu_ghost_evictable_data kstat.zfs.misc.arcstats.mfu_ghost_evictable_data
# TYPE node_zfsArc_mfu_ghost_evictable_data untyped
node_zfsArc_mfu_ghost_evictable_data 9.6731136e+07
# HELP node_zfsArc_mfu_ghost_evictable_metadata kstat.zfs.misc.arcstats.mfu_ghost_evictable_metadata
# TYPE node_zfsArc_mfu_ghost_evictable_metadata untyped
node_zfsArc_mfu_ghost_evictable_metadata 8.205312e+06
# HELP node_zfsArc_mfu_ghost_hits kstat.zfs.misc.arcstats.mfu_ghost_hits
# TYPE node_zfsArc_mfu_ghost_hits untyped
node_zfsArc_mfu_ghost_hits 821
# HELP node_zfsArc_mfu_ghost_size kstat.zfs.misc.arcstats.mfu_ghost_size
# TYPE node_zfsArc_mfu_ghost_size untyped
node_zfsArc_mfu_ghost_size 1.04936448e+08
# HELP node_zfsArc_mfu_hits kstat.zfs.misc.arcstats.mfu_hits
# TYPE node_zfsArc_mfu_hits untyped
node_zfsArc_mfu_hits 7.829854e+06
# HELP node_zfsArc_mfu_size kstat.zfs.misc.arcstats.mfu_size
# TYPE node_zfsArc_mfu_size untyped
node_zfsArc_mfu_size 1.066623488e+09
# HELP node_zfsArc_misses kstat.zfs.misc.arcstats.misses
# TYPE node_zfsArc_misses untyped
node_zfsArc_misses 604635
# HELP node_zfsArc_mru_evictable_data kstat.zfs.misc.arcstats.mru_evictable_data
# TYPE node_zfsArc_mru_evictable_data untyped
node_zfsArc_mru_evictable_data 2.78091264e+08
# HELP node_zfsArc_mru_evictable_metadata kstat.zfs.misc.arcstats.mru_evictable_metadata
# TYPE node_zfsArc_mru_evictable_metadata untyped
node_zfsArc_mru_evictable_metadata 1.8606592e+07
# HELP node_zfsArc_mru_ghost_evictable_data kstat.zfs.misc.arcstats.mru_ghost_evictable_data
# TYPE node_zfsArc_mru_ghost_evictable_data untyped
node_zfsArc_mru_ghost_evictable_data 8.83765248e+08
# HELP node_zfsArc_mru_ghost_evictable_metadata kstat.zfs.misc.arcstats.mru_ghost_evictable_metadata
# TYPE node_zfsArc_mru_ghost_evictable_metadata untyped
node_zfsArc_mru_ghost_evictable_metadata 1.1596288e+08
# HELP node_zfsArc_mru_ghost_hits kstat.zfs.misc.arcstats.mru_ghost_hits
# TYPE node_zfsArc_mru_ghost_hits untyped
node_zfsArc_mru_ghost_hits 21100
# HELP node_zfsArc_mru_ghost_size kstat.zfs.misc.arcstats.mru_ghost_size
# TYPE node_zfsArc_mru_ghost_size untyped
node_zfsArc_mru_ghost_size 9.99728128e+08
# HELP node_zfsArc_mru_hits kstat.zfs.misc.arcstats.mru_hits
# TYPE node_zfsArc_mru_hits untyped
node_zfsArc_mru_hits 855535
# HELP node_zfsArc_mru_size kstat.zfs.misc.arcstats.mru_size
# TYPE node_zfsArc_mru_size untyped
node_zfsArc_mru_size 4.02593792e+08
# HELP node_zfsArc_mutex_miss kstat.zfs.misc.arcstats.mutex_miss
# TYPE node_zfsArc_mutex_miss untyped
node_zfsArc_mutex_miss 2
# HELP node_zfsArc_other_size kstat.zfs.misc.arcstats.other_size
# TYPE node_zfsArc_other_size untyped
node_zfsArc_other_size 1.16443992e+08
# HELP node_zfsArc_p kstat.zfs.misc.arcstats.p
# TYPE node_zfsArc_p untyped
node_zfsArc_p 5.16395305e+08
# HELP node_zfsArc_prefetch_data_hits kstat.zfs.misc.arcstats.prefetch_data_hits
# TYPE node_zfsArc_prefetch_data_hits untyped
node_zfsArc_prefetch_data_hits 3615
# HELP node_zfsArc_prefetch_data_misses kstat.zfs.misc.arcstats.prefetch_data_misses
# TYPE node_zfsArc_prefetch_data_misses untyped
node_zfsArc_prefetch_data_misses 17094
# HELP node_zfsArc_prefetch_metadata_hits kstat.zfs.misc.arcstats.prefetch_metadata_hits
# TYPE node_zfsArc_prefetch_metadata_hits untyped
node_zfsArc_prefetch_metadata_hits 83612
# HELP node_zfsArc_prefetch_metadata_misses kstat.zfs.misc.arcstats.prefetch_metadata_misses
# TYPE node_zfsArc_prefetch_metadata_misses untyped
node_zfsArc_prefetch_metadata_misses 16071
# HELP node_zfsArc_size kstat.zfs.misc.arcstats.size
# TYPE node_zfsArc_size untyped
node_zfsArc_size 1.603939792e+09
# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.
# TYPE process_cpu_seconds_total counter
# HELP process_max_fds Maximum number of open file descriptors.

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@ -0,0 +1,93 @@
6 1 0x01 91 4368 5266997922 97951858082072
name type data
hits 4 8772612
misses 4 604635
demand_data_hits 4 7221032
demand_data_misses 4 73300
demand_metadata_hits 4 1464353
demand_metadata_misses 4 498170
prefetch_data_hits 4 3615
prefetch_data_misses 4 17094
prefetch_metadata_hits 4 83612
prefetch_metadata_misses 4 16071
mru_hits 4 855535
mru_ghost_hits 4 21100
mfu_hits 4 7829854
mfu_ghost_hits 4 821
deleted 4 60403
mutex_miss 4 2
evict_skip 4 2265729
evict_not_enough 4 680
evict_l2_cached 4 0
evict_l2_eligible 4 8992514560
evict_l2_ineligible 4 992552448
evict_l2_skip 4 0
hash_elements 4 42359
hash_elements_max 4 88245
hash_collisions 4 50564
hash_chains 4 412
hash_chain_max 4 3
p 4 516395305
c 4 1643208777
c_min 4 33554432
c_max 4 8367976448
size 4 1603939792
hdr_size 4 16361080
data_size 4 1295836160
metadata_size 4 175298560
other_size 4 116443992
anon_size 4 1917440
anon_evictable_data 4 0
anon_evictable_metadata 4 0
mru_size 4 402593792
mru_evictable_data 4 278091264
mru_evictable_metadata 4 18606592
mru_ghost_size 4 999728128
mru_ghost_evictable_data 4 883765248
mru_ghost_evictable_metadata 4 115962880
mfu_size 4 1066623488
mfu_evictable_data 4 1017613824
mfu_evictable_metadata 4 9163776
mfu_ghost_size 4 104936448
mfu_ghost_evictable_data 4 96731136
mfu_ghost_evictable_metadata 4 8205312
l2_hits 4 0
l2_misses 4 0
l2_feeds 4 0
l2_rw_clash 4 0
l2_read_bytes 4 0
l2_write_bytes 4 0
l2_writes_sent 4 0
l2_writes_done 4 0
l2_writes_error 4 0
l2_writes_lock_retry 4 0
l2_evict_lock_retry 4 0
l2_evict_reading 4 0
l2_evict_l1cached 4 0
l2_free_on_write 4 0
l2_cdata_free_on_write 4 0
l2_abort_lowmem 4 0
l2_cksum_bad 4 0
l2_io_error 4 0
l2_size 4 0
l2_asize 4 0
l2_hdr_size 4 0
l2_compress_successes 4 0
l2_compress_zeros 4 0
l2_compress_failures 4 0
memory_throttle_count 4 0
duplicate_buffers 4 0
duplicate_buffers_size 4 0
duplicate_reads 4 0
memory_direct_count 4 542
memory_indirect_count 4 3006
arc_no_grow 4 0
arc_tempreserve 4 0
arc_loaned_bytes 4 0
arc_prune 4 0
arc_meta_used 4 308103632
arc_meta_limit 4 6275982336
arc_meta_max 4 449286096
arc_meta_min 4 16777216
arc_need_free 4 0
arc_sys_free 4 261496832

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@ -0,0 +1,100 @@
// Copyright 2016 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build linux
// +build !nozfs
package collector
import (
"errors"
"strings"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log"
)
type zfsMetricValue int
const zfsErrorValue = zfsMetricValue(-1)
var zfsNotAvailableError = errors.New("ZFS / ZFS statistics are not available")
type zfsSysctl string
type zfsSubsystemName string
const (
arc = zfsSubsystemName("zfsArc")
zpoolSubsystem = zfsSubsystemName("zfsPool")
)
// Metrics
type zfsMetric struct {
subsystem zfsSubsystemName // The Prometheus subsystem name.
name string // The Prometheus name of the metric.
sysctl zfsSysctl // The sysctl of the ZFS metric.
}
// Collector
func init() {
Factories["zfs"] = NewZFSCollector
}
type zfsCollector struct {
zfsMetrics []zfsMetric
}
func NewZFSCollector() (Collector, error) {
return &zfsCollector{}, nil
}
func (c *zfsCollector) Update(ch chan<- prometheus.Metric) (err error) {
// Arcstats
err = c.updateArcstats(ch)
if err != nil {
return err
}
switch {
case err == zfsNotAvailableError:
log.Debug(err)
return nil
case err != nil:
return err
}
// Pool stats
return c.updatePoolStats(ch)
}
func (s zfsSysctl) metricName() string {
parts := strings.Split(string(s), ".")
return parts[len(parts)-1]
}
func (c *zfsCollector) constSysctlMetric(subsystem zfsSubsystemName, sysctl zfsSysctl, value zfsMetricValue) prometheus.Metric {
metricName := sysctl.metricName()
return prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName(Namespace, string(subsystem), metricName),
string(sysctl),
nil,
nil,
),
prometheus.UntypedValue,
float64(value),
)
}

90
collector/zfs_linux.go Normal file
View file

@ -0,0 +1,90 @@
// Copyright 2016 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package collector
import (
"bufio"
"errors"
"fmt"
"io"
"os"
"strconv"
"strings"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log"
)
const (
zfsArcstatsProcpath = "spl/kstat/zfs/arcstats"
)
func (c *zfsCollector) openArcstatsFile() (file *os.File, err error) {
file, err = os.Open(procFilePath(zfsArcstatsProcpath))
if err != nil {
log.Debugf("Cannot open %q for reading. Is the kernel module loaded?", procFilePath(zfsArcstatsProcpath))
err = zfsNotAvailableError
}
return
}
func (c *zfsCollector) updateArcstats(ch chan<- prometheus.Metric) (err error) {
file, err := c.openArcstatsFile()
if err != nil {
return err
}
defer file.Close()
return c.parseArcstatsProcfsFile(file, func(s zfsSysctl, v zfsMetricValue) {
ch <- c.constSysctlMetric(arc, s, v)
})
}
func (c *zfsCollector) parseArcstatsProcfsFile(reader io.Reader, handler func(zfsSysctl, zfsMetricValue)) (err error) {
scanner := bufio.NewScanner(reader)
parseLine := false
for scanner.Scan() {
parts := strings.Fields(scanner.Text())
if !parseLine && len(parts) == 3 && parts[0] == "name" && parts[1] == "type" && parts[2] == "data" {
// Start parsing from here.
parseLine = true
continue
}
if !parseLine || len(parts) < 3 {
continue
}
key := fmt.Sprintf("kstat.zfs.misc.arcstats.%s", parts[0])
value, err := strconv.Atoi(parts[2])
if err != nil {
return fmt.Errorf("could not parse expected integer value for %q", key)
}
handler(zfsSysctl(key), zfsMetricValue(value))
}
if !parseLine {
return errors.New("did not parse a single arcstat metric")
}
return scanner.Err()
}
func (c *zfsCollector) updatePoolStats(ch chan<- prometheus.Metric) (err error) {
return nil
}

View file

@ -0,0 +1,55 @@
// Copyright 2016 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package collector
import (
"os"
"testing"
)
func TestArcstatsParsing(t *testing.T) {
arcstatsFile, err := os.Open("fixtures/proc/spl/kstat/zfs/arcstats")
if err != nil {
t.Fatal(err)
}
defer arcstatsFile.Close()
c := zfsCollector{}
if err != nil {
t.Fatal(err)
}
handlerCalled := false
err = c.parseArcstatsProcfsFile(arcstatsFile, func(s zfsSysctl, v zfsMetricValue) {
if s != zfsSysctl("kstat.zfs.misc.arcstats.hits") {
return
}
handlerCalled = true
if v != zfsMetricValue(8772612) {
t.Fatalf("Incorrect value parsed from procfs data")
}
})
if err != nil {
t.Fatal(err)
}
if !handlerCalled {
t.Fatal("Arcstats parsing handler was not called for some expected sysctls")
}
}

View file

@ -23,6 +23,7 @@ collectors=$(cat << COLLECTORS
textfile
bonding
megacli
zfs
COLLECTORS
)
cd "$(dirname $0)"

View file

@ -32,7 +32,7 @@ import (
)
const (
defaultCollectors = "conntrack,cpu,diskstats,entropy,filefd,filesystem,hwmon,loadavg,mdadm,meminfo,netdev,netstat,sockstat,stat,textfile,time,uname,vmstat"
defaultCollectors = "conntrack,cpu,diskstats,entropy,filefd,filesystem,hwmon,loadavg,mdadm,meminfo,netdev,netstat,sockstat,stat,textfile,time,uname,vmstat,zfs"
)
var (