ceph 常用命令
bucket 常用命令
查看 realm （区域）
radosgw-admin realm list
输出
{"default_info": "43c462f5-5634-496e-ad4e-978d28c2x9090","realms": ["myrgw"]
}
radosgw-admin realm get
{"id": "2cfc7b36-43b6-4a9b-a89e-2a2264f54733","name": "mys3","current_period": "4999b859-83e2-42f9-8d3c-c7ae4b9685ff","epoch": 2
}
查看区域组
radosgw-admin zonegroups list
或者
radosgw-admin zonegroup list
输出
{"default_info": "f3a96381-12e2-4e7e-8221-c1d79708bc59","zonegroups": ["myrgw"]
}
radosgw-admin zonegroup get
{"id": "ad97bbae-61f1-41cb-a585-d10dd54e86e4","name": "mys3","api_name": "mys3","is_master": "true","endpoints": ["http://rook-ceph-rgw-mys3.rook-ceph.svc:80"],"hostnames": [],"hostnames_s3website": [],"master_zone": "9b5c0c9f-541d-4176-8527-89b4dae02ac2","zones": [{"id": "9b5c0c9f-541d-4176-8527-89b4dae02ac2","name": "mys3","endpoints": ["http://rook-ceph-rgw-mys3.rook-ceph.svc:80"],"log_meta": "false","log_data": "false","bucket_index_max_shards": 11,"read_only": "false","tier_type": "","sync_from_all": "true","sync_from": [],"redirect_zone": ""}],"placement_targets": [{"name": "default-placement","tags": [],"storage_classes": ["STANDARD"]}],"default_placement": "default-placement","realm_id": "2cfc7b36-43b6-4a9b-a89e-2a2264f54733","sync_policy": {"groups": []}
}
查看 zone
radosgw-admin zone list
{"default_info": "9b5c0c9f-541d-4176-8527-89b4dae02ac2","zones": ["mys3","default"]
}
radosgw-admin zone get
{"id": "9b5c0c9f-541d-4176-8527-89b4dae02ac2","name": "mys3","domain_root": "mys3.rgw.meta:root","control_pool": "mys3.rgw.control","gc_pool": "mys3.rgw.log:gc","lc_pool": "mys3.rgw.log:lc","log_pool": "mys3.rgw.log","intent_log_pool": "mys3.rgw.log:intent","usage_log_pool": "mys3.rgw.log:usage","roles_pool": "mys3.rgw.meta:roles","reshard_pool": "mys3.rgw.log:reshard","user_keys_pool": "mys3.rgw.meta:users.keys","user_email_pool": "mys3.rgw.meta:users.email","user_swift_pool": "mys3.rgw.meta:users.swift","user_uid_pool": "mys3.rgw.meta:users.uid","otp_pool": "mys3.rgw.otp","system_key": {"access_key": "","secret_key": ""},"placement_pools": [{"key": "default-placement","val": {"index_pool": "mys3.rgw.buckets.index","storage_classes": {"STANDARD": {"data_pool": "mys3.rgw.buckets.data"}},"data_extra_pool": "mys3.rgw.buckets.non-ec","index_type": 0,"inline_data": "true"}}],"realm_id": "","notif_pool": "mys3.rgw.log:notif"
}
查看bucket 名字
radosgw-admin bucket list
查看某个bucket的详细信息
说明：对象 id ，有多少个对象，存储限制等信息都能查到。
radosgw-admin bucket stats --bucket=ceph-bkt-9
{"bucket": "ceph-bkt-9","num_shards": 9973,"tenant": "","zonegroup": "f3a96381-12e2-4e7e-8221-c1d79708bc59","placement_rule": "default-placement","explicit_placement": {"data_pool": "","data_extra_pool": "","index_pool": ""},"id": "af3f8be9-99ee-44b7-9d17-5b616dca80ff.45143.53","marker": "af3f8be9-99ee-44b7-9d17-5b616dca80ff.45143.53","index_type": "Normal","owner": "mys3-juicefs","ver": "0#536,1#475,省略","master_ver": "0#0,1#0,2#0,3#0,4#0,省略","mtime": "0.000000","creation_time": "2023-11-03T16:58:09.692764Z","max_marker": "0#,1#,2#,3#,省略","usage": {"rgw.main": {"size": 88057775893,"size_actual": 99102711808,"size_utilized": 88057775893,"size_kb": 85993922,"size_kb_actual": 96779992,"size_kb_utilized": 85993922,"num_objects": 4209803}},"bucket_quota": {"enabled": false,"check_on_raw": false,"max_size": -1,"max_size_kb": 0,"max_objects": -1}
}
查看bucket的配置信息，例如索引分片值
radosgw-admin bucket limit check
说明：由于输出太多，所以只显示50行
radosgw-admin bucket limit check|head -50
[{"user_id": "dashboard-admin","buckets": []},{"user_id": "obc-default-ceph-bkt-openbayes-juicefs-6a2b2c57-d393-4529-8620-c0af6c9c30f8","buckets": [{"bucket": "ceph-bkt-20d5f58a-7501-4084-baca-98d9e68a7e57","tenant": "","num_objects": 355,"num_shards": 11,"objects_per_shard": 32,"fill_status": "OK"}]},{"user_id": "rgw-admin-ops-user","buckets": []},{"user_id": "mys3-user","buckets": [{"bucket": "ceph-bkt-caa8a9d1-c278-4015-ba2d-354e142c0","tenant": "","num_objects": 80,"num_shards": 11,"objects_per_shard": 7,"fill_status": "OK"},{"bucket": "ceph-bkt-caa8a9d1-c278-4015-ba2d-354e142c1","tenant": "","num_objects": 65,"num_shards": 11,"objects_per_shard": 5,"fill_status": "OK"},{"bucket": "ceph-bkt-caa8a9d1-c278-4015-ba2d-354e142c10","tenant": "","num_objects": 83,"num_shards": 11,"objects_per_shard": 7,"fill_status": "OK"},{
查看存储使用情况命令
ceph df
输出
--- RAW STORAGE ---
CLASS SIZE AVAIL USED RAW USED %RAW USED
hdd 900 GiB 834 GiB 66 GiB 66 GiB 7.29
TOTAL 900 GiB 834 GiB 66 GiB 66 GiB 7.29--- POOLS ---
POOL ID PGS STORED OBJECTS USED %USED MAX AVAIL
.mgr 1 1 449 KiB 2 1.3 MiB 0 255 GiB
replicapool 2 32 19 GiB 5.87k 56 GiB 6.79 255 GiB
myfs-metadata 3 16 34 MiB 33 103 MiB 0.01 255 GiB
myfs-replicated 4 32 1.9 MiB 9 5.8 MiB 0 255 GiB
.rgw.root 26 8 5.6 KiB 20 152 KiB 0 383 GiB
default.rgw.log 27 32 182 B 2 24 KiB 0 255 GiB
default.rgw.control 28 32 0 B 8 0 B 0 255 GiB
default.rgw.meta 29 32 0 B 0 0 B 0 255 GiB
ceph osd df
输出
ID CLASS WEIGHT REWEIGHT SIZE RAW USE DATA OMAP META AVAIL %USE VAR PGS STATUS0 hdd 0.09769 1.00000 100 GiB 6.4 GiB 4.8 GiB 3.2 MiB 1.5 GiB 94 GiB 6.35 0.87 89 up3 hdd 0.19530 1.00000 200 GiB 15 GiB 14 GiB 42 MiB 1.1 GiB 185 GiB 7.61 1.04 152 up1 hdd 0.09769 1.00000 100 GiB 7.3 GiB 5.3 GiB 1.5 MiB 1.9 GiB 93 GiB 7.27 1.00 78 up4 hdd 0.19530 1.00000 200 GiB 15 GiB 14 GiB 4.2 MiB 1.1 GiB 185 GiB 7.32 1.00 157 up2 hdd 0.09769 1.00000 100 GiB 9.9 GiB 7.6 GiB 1.2 MiB 2.3 GiB 90 GiB 9.94 1.36 73 up5 hdd 0.19530 1.00000 200 GiB 12 GiB 11 GiB 43 MiB 1.1 GiB 188 GiB 6.18 0.85 158 upTOTAL 900 GiB 66 GiB 57 GiB 95 MiB 9.1 GiB 834 GiB 7.31
MIN/MAX VAR: 0.85/1.36 STDDEV: 1.24
rados df
POOL_NAME USED OBJECTS CLONES COPIES MISSING_ON_PRIMARY UNFOUND DEGRADED RD_OPS RD WR_OPS WR USED COMPR UNDER COMPR
.mgr 1.3 MiB 2 0 6 0 0 0 2696928 5.5 GiB 563117 29 MiB 0 B 0 B
.rgw.root 152 KiB 20 0 40 0 0 0 428 443 KiB 10 7 KiB 0 B 0 B
default.rgw.control 0 B 8 0 24 0 0 0 0 0 B 0 0 B 0 B 0 B
default.rgw.log 24 KiB 2 0 6 0 0 0 0 0 B 0 0 B 0 B 0 B
default.rgw.meta 0 B 0 0 0 0 0 0 0 0 B 0 0 B 0 B 0 B
myfs-metadata 103 MiB 33 0 99 0 0 0 18442579 10 GiB 272672 194 MiB 0 B 0 B
myfs-replicated 5.8 MiB 9 0 27 0 0 0 24 24 KiB 33 1.9 MiB 0 B 0 B
mys3.rgw.buckets.data 307 MiB 18493 0 36986 0 0 0 767457 942 MiB 2713288 1.2 GiB 0 B 0 B
mys3.rgw.buckets.index 20 MiB 2827 0 5654 0 0 0 7299856 6.2 GiB 1208180 598 MiB 0 B 0 B
mys3.rgw.buckets.non-ec 0 B 0 0 0 0 0 0 0 0 B 0 0 B 0 B 0 B
mys3.rgw.control 0 B 8 0 16 0 0 0 0 0 B 0 0 B 0 B 0 B
mys3.rgw.log 76 MiB 342 0 684 0 0 0 4944901 4.5 GiB 3764847 1.1 GiB 0 B 0 B
mys3.rgw.meta 4.3 MiB 526 0 1052 0 0 0 4617928 3.8 GiB 658074 321 MiB 0 B 0 B
mys3.rgw.otp 0 B 0 0 0 0 0 0 0 0 B 0 0 B 0 B 0 B
replicapool 56 GiB 5873 0 17619 0 0 0 4482521 65 GiB 132312964 1.3 TiB 0 B 0 Btotal_objects 28143
total_used 65 GiB
total_avail 835 GiB
total_space 900 GiB
ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 0.87895 root default
-5 0.29298 host node01 0 hdd 0.09769 osd.0 up 1.00000 1.000003 hdd 0.19530 osd.3 up 1.00000 1.00000
-3 0.29298 host node02 1 hdd 0.09769 osd.1 up 1.00000 1.000004 hdd 0.19530 osd.4 up 1.00000 1.00000
-7 0.29298 host node03 2 hdd 0.09769 osd.2 up 1.00000 1.000005 hdd 0.19530 osd.5 up 1.00000 1.00000
ceph osd find 1
说明：1为 osd 的 id 号
{"osd": 1,"addrs": {"addrvec": [{"type": "v2","addr": "10.96.12.109:6800","nonce": 701714258},{"type": "v1","addr": "10.96.12.109:6801","nonce": 701714258}]},"osd_fsid": "9b165ff1-1116-4dd8-ab04-59abb6e5e3b5","host": "node02","pod_name": "rook-ceph-osd-1-5cd7b7fd9b-pq76v","pod_namespace": "rook-ceph","crush_location": {"host": "node02","root": "default"}
}
pg 常用命令
ceph pg ls-by-osd 0|head -20
PG OBJECTS DEGRADED MISPLACED UNFOUND BYTES OMAP_BYTES* OMAP_KEYS* LOG STATE SINCE VERSION REPORTED UP ACTING SCRUB_STAMP DEEP_SCRUB_STAMP LAST_SCRUB_DURATION SCRUB_SCHEDULING
2.5 185 0 0 0 682401810 75 8 4202 active+clean 7h 89470'3543578 89474:3900145 [2,4,0]p2 [2,4,0]p2 2023-11-15T01:09:50.285147+0000 2023-11-15T01:09:50.285147+0000 4 periodic scrub scheduled @ 2023-11-16T12:33:31.356087+0000
2.9 178 0 0 0 633696256 423 13 2003 active+clean 117m 89475'2273592 89475:2445503 [4,0,5]p4 [4,0,5]p4 2023-11-15T06:22:49.007240+0000 2023-11-12T21:00:41.277161+0000 1 periodic scrub scheduled @ 2023-11-16T13:29:45.298222+0000
2.c 171 0 0 0 607363106 178 12 4151 active+clean 14h 89475'4759653 89475:4985220 [2,4,0]p2 [2,4,0]p2 2023-11-14T17:41:46.959311+0000 2023-11-13T07:10:45.084379+0000 1 periodic scrub scheduled @ 2023-11-15T23:58:48.840924+0000
2.f 174 0 0 0 641630226 218 8 4115 active+clean 12h 89475'4064519 89475:4177515 [2,0,4]p2 [2,0,4]p2 2023-11-14T20:11:34.002882+0000 2023-11-13T13:19:50.306895+0000 1 periodic scrub scheduled @ 2023-11-16T02:52:50.646390+0000
2.11 172 0 0 0 637251602 0 0 3381 active+clean 7h 89475'4535730 89475:4667861 [0,4,5]p0 [0,4,5]p0 2023-11-15T00:41:28.325584+0000 2023-11-08T22:50:59.120985+0000 1 periodic scrub scheduled @ 2023-11-16T05:10:15.810837+0000
2.13 198 0 0 0 762552338 347 19 1905 active+clean 5h 89475'6632536 89475:6895777 [5,0,4]p5 [5,0,4]p5 2023-11-15T03:06:33.483129+0000 2023-11-15T03:06:33.483129+0000 5 periodic scrub scheduled @ 2023-11-16T10:29:19.975736+0000
2.16 181 0 0 0 689790976 75 8 3427 active+clean 18h 89475'5897648 89475:6498260 [0,2,1]p0 [0,2,1]p0 2023-11-14T14:07:00.475337+0000 2023-11-13T08:59:03.104478+0000 1 periodic scrub scheduled @ 2023-11-16T01:55:30.581835+0000
2.1b 181 0 0 0 686268416 437 16 1956 active+clean 5h 89475'4001434 89475:4376306 [5,0,4]p5 [5,0,4]p5 2023-11-15T02:36:36.002761+0000 2023-11-15T02:36:36.002761+0000 4 periodic scrub scheduled @ 2023-11-16T09:15:09.271395+0000
3.2 0 0 0 0 0 0 0 68 active+clean 4h 67167'68 89474:84680 [4,5,0]p4 [4,5,0]p4 2023-11-15T04:01:14.378817+0000 2023-11-15T04:01:14.378817+0000 1 periodic scrub scheduled @ 2023-11-16T09:26:55.350003+0000
3.3 2 0 0 0 34 4880 10 71 active+clean 6h 71545'71 89474:97438 [0,4,5]p0 [0,4,5]p0 2023-11-15T01:55:57.633258+0000 2023-11-12T07:28:22.391454+0000 1 periodic scrub scheduled @ 2023-11-16T02:46:05.613867+0000
3.6 1 0 0 0 0 0 0 1987 active+clean 91m 89475'54154 89475:145435 [4,0,5]p4 [4,0,5]p4 2023-11-15T06:48:38.818739+0000 2023-11-08T20:05:08.257800+0000 1 periodic scrub scheduled @ 2023-11-16T15:08:59.546203+0000
3.8 0 0 0 0 0 0 0 44 active+clean 16h 83074'44 89474:84245 [5,1,0]p5 [5,1,0]p5 2023-11-14T15:26:04.057142+0000 2023-11-13T03:51:42.271364+0000 1 periodic scrub scheduled @ 2023-11-15T19:49:15.168863+0000
3.b 3 0 0 0 8388608 0 0 2369 active+clean 24h 29905'26774 89474:3471652 [4,0,5]p4 [4,0,5]p4 2023-11-14T07:50:38.682896+0000 2023-11-10T20:06:19.530705+0000 1 periodic scrub scheduled @ 2023-11-15T12:35:50.298157+0000
3.f 4 0 0 0 4194880 0 0 4498 active+clean 15h 42287'15098 89474:905369 [0,5,4]p0 [0,5,4]p0 2023-11-14T17:15:38.681549+0000 2023-11-10T14:00:49.535978+0000 1 periodic scrub scheduled @ 2023-11-15T22:26:56.705010+0000
4.6 0 0 0 0 0 0 0 380 active+clean 2h 20555'380 89474:84961 [5,1,0]p5 [5,1,0]p5 2023-11-15T05:29:28.833076+0000 2023-11-09T09:41:36.198863+0000 1 periodic scrub scheduled @ 2023-11-16T11:28:34.901957+0000
4.a 0 0 0 0 0 0 0 274 active+clean 16h 20555'274 89474:91274 [0,1,2]p0 [0,1,2]p0 2023-11-14T16:09:50.743410+0000 2023-11-14T16:09:50.743410+0000 1 periodic scrub scheduled @ 2023-11-15T18:12:35.709178+0000
4.b 0 0 0 0 0 0 0 352 active+clean 6h 20555'352 89474:85072 [4,0,5]p4 [4,0,5]p4 2023-11-15T01:49:06.361454+0000 2023-11-12T12:44:50.143887+0000 7 periodic scrub scheduled @ 2023-11-16T03:42:06.193542+0000
4.10 1 0 0 0 2474 0 0 283 active+clean 17h 20555'283 89474:89904 [4,2,0]p4 [4,2,0]p4 2023-11-14T14:57:49.174637+0000 2023-11-09T18:56:58.241925+0000 1 periodic scrub scheduled @ 2023-11-16T02:56:36.556523+0000
4.14 0 0 0 0 0 0 0 304 active+clean 33h 20555'304 89474:85037 [5,1,0]p5 [5,1,0]p5 2023-11-13T22:55:24.034723+0000 2023-11-11T09:51:00.248512+0000 1 periodic scrub scheduled @ 2023-11-15T09:18:55.094605+0000
ceph pg ls-by-pool myfs-replicated|head -10
PG OBJECTS DEGRADED MISPLACED UNFOUND BYTES OMAP_BYTES* OMAP_KEYS* LOG STATE SINCE VERSION REPORTED UP ACTING SCRUB_STAMP DEEP_SCRUB_STAMP LAST_SCRUB_DURATION SCRUB_SCHEDULING
4.0 0 0 0 0 0 0 0 294 active+clean 14m 20555'294 89474:89655 [4,3,5]p4 [4,3,5]p4 2023-11-15T08:06:30.504646+0000 2023-11-11T14:10:37.423797+0000 1 periodic scrub scheduled @ 2023-11-16T20:00:48.189584+0000
4.1 0 0 0 0 0 0 0 282 active+clean 19h 20555'282 89474:91316 [2,3,4]p2 [2,3,4]p2 2023-11-14T13:11:39.095045+0000 2023-11-08T02:29:45.827302+0000 1 periodic deep scrub scheduled @ 2023-11-15T23:05:45.143337+0000
4.2 0 0 0 0 0 0 0 228 active+clean 30h 20555'228 89474:84866 [5,3,4]p5 [5,3,4]p5 2023-11-14T01:51:16.091750+0000 2023-11-14T01:51:16.091750+0000 1 periodic scrub scheduled @ 2023-11-15T13:37:08.420266+0000
4.3 0 0 0 0 0 0 0 228 active+clean 12h 20555'228 89474:91622 [2,3,1]p2 [2,3,1]p2 2023-11-14T19:23:46.585302+0000 2023-11-07T22:06:51.216573+0000 1 periodic deep scrub scheduled @ 2023-11-16T02:02:54.588932+0000
4.4 1 0 0 0 2474 0 0 236 active+clean 18h 20555'236 89474:35560 [1,5,3]p1 [1,5,3]p1 2023-11-14T13:42:45.498057+0000 2023-11-10T13:03:03.664431+0000 1 periodic scrub scheduled @ 2023-11-15T22:08:15.399060+0000
4.5 0 0 0 0 0 0 0 171 active+clean 23h 20555'171 89474:88153 [3,5,1]p3 [3,5,1]p3 2023-11-14T09:01:04.687468+0000 2023-11-09T23:45:29.913888+0000 6 periodic scrub scheduled @ 2023-11-15T13:08:21.849161+0000
4.6 0 0 0 0 0 0 0 380 active+clean 2h 20555'380 89474:84961 [5,1,0]p5 [5,1,0]p5 2023-11-15T05:29:28.833076+0000 2023-11-09T09:41:36.198863+0000 1 periodic scrub scheduled @ 2023-11-16T11:28:34.901957+0000
4.7 0 0 0 0 0 0 0 172 active+clean 18h 20555'172 89474:77144 [1,5,3]p1 [1,5,3]p1 2023-11-14T13:52:17.458837+0000 2023-11-09T16:56:57.755836+0000 17 periodic scrub scheduled @ 2023-11-16T01:10:07.099940+0000
4.8 0 0 0 0 0 0 0 272 active+clean 15h 20555'272 89474:84994 [5,3,4]p5 [5,3,4]p5 2023-11-14T17:14:47.534009+0000 2023-11-14T17:14:47.534009+0000 1 periodic scrub scheduled @ 2023-11-15T19:30:59.254042+0000
ceph pg ls-by-primary 0|head -10
PG OBJECTS DEGRADED MISPLACED UNFOUND BYTES OMAP_BYTES* OMAP_KEYS* LOG STATE SINCE VERSION REPORTED UP ACTING SCRUB_STAMP DEEP_SCRUB_STAMP LAST_SCRUB_DURATION SCRUB_SCHEDULING
2.11 172 0 0 0 637251602 0 0 3375 active+clean 7h 89475'4536024 89475:4668155 [0,4,5]p0 [0,4,5]p0 2023-11-15T00:41:28.325584+0000 2023-11-08T22:50:59.120985+0000 1 periodic scrub scheduled @ 2023-11-16T05:10:15.810837+0000
2.16 181 0 0 0 689790976 75 8 3380 active+clean 18h 89475'5898101 89475:6498713 [0,2,1]p0 [0,2,1]p0 2023-11-14T14:07:00.475337+0000 2023-11-13T08:59:03.104478+0000 1 periodic scrub scheduled @ 2023-11-16T01:55:30.581835+0000
3.3 2 0 0 0 34 4880 10 71 active+clean 6h 71545'71 89474:97438 [0,4,5]p0 [0,4,5]p0 2023-11-15T01:55:57.633258+0000 2023-11-12T07:28:22.391454+0000 1 periodic scrub scheduled @ 2023-11-16T02:46:05.613867+0000
3.f 4 0 0 0 4194880 0 0 4498 active+clean 15h 42287'15098 89474:905369 [0,5,4]p0 [0,5,4]p0 2023-11-14T17:15:38.681549+0000 2023-11-10T14:00:49.535978+0000 1 periodic scrub scheduled @ 2023-11-15T22:26:56.705010+0000
4.a 0 0 0 0 0 0 0 274 active+clean 16h 20555'274 89474:91274 [0,1,2]p0 [0,1,2]p0 2023-11-14T16:09:50.743410+0000 2023-11-14T16:09:50.743410+0000 1 periodic scrub scheduled @ 2023-11-15T18:12:35.709178+0000
4.1b 0 0 0 0 0 0 0 188 active+clean 9h 20572'188 89474:60345 [0,4,5]p0 [0,4,5]p0 2023-11-14T22:45:32.243017+0000 2023-11-09T15:22:58.954604+0000 15 periodic scrub scheduled @ 2023-11-16T05:26:22.970008+0000
26.0 4 0 0 0 2055 0 0 4 active+clean 16h 74696'14 89474:22375 [0,5]p0 [0,5]p0 2023-11-14T16:07:57.126669+0000 2023-11-09T12:57:29.272721+0000 1 periodic scrub scheduled @ 2023-11-15T17:12:43.441862+0000
26.3 1 0 0 0 104 0 0 1 active+clean 10h 74632'8 89474:22487 [0,4]p0 [0,4]p0 2023-11-14T21:43:19.284917+0000 2023-11-11T13:26:08.679346+0000 1 periodic scrub scheduled @ 2023-11-16T01:39:45.617371+0000
27.5 1 0 0 0 154 0 0 2 active+clean 23h 69518'2 89474:22216 [0,4,2]p0 [0,4,2]p0 2023-11-14T08:56:33.324158+0000 2023-11-10T23:46:33.688281+0000 1 periodic scrub scheduled @ 2023-11-15T20:32:30.759743+0000
ceph osd perf
osd commit_latency(ms) apply_latency(ms)5 2 24 2 23 2 22 0 00 0 01 1 1
相关文章：
ceph 常用命令
bucket 常用命令 查看 realm （区域） radosgw-admin realm list输出 {"default_info": "43c462f5-5634-496e-ad4e-978d28c2x9090","realms": ["myrgw"] }radosgw-admin realm get{"id": "2cfc…...
6.8完全二叉树的节点个数（LC222-E）
算法： 如果不考虑完全二叉树的特性，直接把完全二叉树当作普通二叉树求节点数，其实也很简单。 递归法： 用什么顺序遍历都可以。 比如后序遍历（LRV）：不断遍历左右子树的节点数，最后…...
基于协作mimo系统的RM编译码误码率matlab仿真,对比硬判决译码和软判决译码
目录 1.算法运行效果图预览 2.算法运行软件版本 3.部分核心程序 4.算法理论概述 5.算法完整程序工程 1.算法运行效果图预览 2.算法运行软件版本 matlab2022a 3.部分核心程序 ..................................................................... while(Err < TL…...
Django模型层
模型层 与数据库相关的，用于定义数据模型和数据库表结构。 在Django应用程序中，模型层是数据库和应用程序之间的接口，它负责处理所有与数据库相关的操作，例如创建、读取、更新和删除记录。Django的模型层还提供了一些高级功能 首…...
计算机视觉的应用18-一键抠图人像与更换背景的项目应用，可扩展批量抠图与背景替换
大家好，我是微学AI，今天给大家介绍一下计算机视觉的应用18-一键抠图人像与更换背景的项目应用，可扩展批量抠图与背景替换。该项目能够让你轻松地处理和编辑图片。这个项目的核心功能是一键抠图和更换背景。这个项目能够自动识别图片中的主体&…...
Redis(哈希Hash和发布订阅模式)
哈希是一个字符类型字段和值的映射表。 在Redis中，哈希是一种数据结构，用于存储键值对的集合。哈希可以理解为一个键值对的集合，其中每个键都对应一个值。哈希在Redis中的作用主要有以下几点： 1. 存储对象：哈希可以用…...
php正则表达式汇总
php正则表达式有"/pattern/“、”“、”$“、”.“、”[]“、”[]“、”[a-z]“、”[A-Z]“、”[0-9]“、”\d"、“\D”、“\w”、“\W”、“\s”、“\S”、“\b”、“*”、“”、“?”、“{n}”、“{n,}”、“{n,m}”、“\bword\b”、“(pattern)”、“x|y"和…...
Python与ArcGIS系列（八）通过python执行地理处理工具
目录 0 简述1 脚本执行地理处理工具2 在地理处理工具间建立联系0 简述 arcgis包含数百种可以通过python脚本执行的地理处理工具，这样就通过python可以处理复杂的工作和批处理。本篇将介绍如何利用arcpy实现执行地理处理工具以及在地理处理工具间建立联系。 1 脚本执行地理处理…...
cocos----刚体
刚体（Rigidbody） 刚体（Rigidbody）是运动学（Kinematic）中的一个概念，指在运动中和受力作用后，形状和大小不变，而且内部各点的相对位置不变的物体。在 Unity3D 中ÿ…...
【SAP-HCM】--HR人员信息导入函数
人员基本信息导入函数：HR_MAINTAIN_MASTERDATA 人员其他信息类型导入函数：HR_INFOTYPE_OPERATION 不逼逼，直接上代码，这两个函数还是相对简单易懂的 *根据操作类型查找对应的T529A 操作类型对应的值IF gt_alv IS NOT INITIAL.S…...
【开源】基于JAVA的大学兼职教师管理系统
项目编号： S 004 ，文末获取源码。 \color{red}{项目编号：S004，文末获取源码。} 项目编号：S004，文末获取源码。 目录 一、摘要1.1 项目介绍1.2 项目录屏 二、研究内容三、界面展示3.1 登录注册3.2 学生教师管…...
Pyhon函数
import time # # for i in range(1,10): # j1 # for j in range(1,i1): # print(f"{i}x{j}{i*j} " ,end) # print() #复用，代码，精简，复用度高def j99(n1,max10): for i in range(n,max):jifor j in ran…...
使用vuex完成小黑记事本案例
使用vuex完成小黑记事本案例 App.vue <template><div id"app"><TodoHeader></TodoHeader><TodoMain ></TodoMain><TodoFooter></TodoFooter></div> </template><script> import TodoMain from …...
进阶理解：leetcode115.不同的子序列（细节深度）
这道题是困难题，本章是针对于动态规划解决，对于思路进行一个全面透彻的讲解，但是并不是对于基础讲解思路，而是渗透到递推式和dp填数的详解，如果有读者不清楚基本的解题思路，请看我的这篇文章算法训练营DAY5…...
数据结构-哈希表（C语言）
哈希表的概念 哈希表就是： “将记录的存储位置与它的关键字之间建立一个对应关系，使每个关键字和一个唯一的存储位置对 应。” 哈希表又称：“散列法”、“杂凑法”、“关键字：地址法”。 哈希表思想 基本思想是在关键字和存…...
HCIA-综合实验（三）
综合实验（三） 1 实验拓扑2 IP 规划3 实验需求一、福州思博网络规划如下：二、上海思博网络规划如下：三、福州思博与上海思博网络互联四、网络优化 4 配置思路4.1 福州思博配置在 SW1、SW2、SW3 上配置交换网络SW1、SW2、SW3 运行 S…...
Java程序员的成长路径
熟悉JAVA语言基础语法。 学习JAVA基础知识，推荐阅读书单中的经典书籍。 理解并掌握面向对象的特性，比如继承，多态，覆盖，重载等含义，并正确运用。 熟悉SDK中常见类和API的使用，比如࿱…...
几种常用的排序
int[] arr new int[]{1, 2,8, 7, 5};这是提前准备好的数组 冒泡排序 public static void bubbleSort(int[] arr) {int len arr.length;for (int i 0; i < len - 1; i) {for (int j 0; j < len - i - 1; j) {if (arr[j] > arr[j1]) {int temp arr[j];arr[j] ar…...
性能测试【第三篇】Jmeter的使用
线程数:10 ,设置10个并发 Ramp-Up时间(秒):所有线程在多少时间内启动,如果设置5,那么每秒启动2个线程 循环次数:请求的重复次数,如果勾选"永远"将一直发送请求 持续时间时间:设置场景运行的时间 启动延迟:设置场景延迟启动时间 响应断言 响应断言模式匹配规则 包括…...
业务：业务系统检查项参考
名录明细云平台摸底1.原有云平台体系：VMware、openstack、ovirt、k8s、docker、混合云系列及版本 2.原有云平台规模，物理机数量、虚拟机数量、迁移业务系统所占配额 3.待补充系统摸底 (适用于物理主机)每一台虚拟机或物理机： 1.系统全局参数…...
多云管理“拦路虎”：深入解析网络互联、身份同步与成本可视化的技术复杂度
一、引言：多云环境的技术复杂性本质 企业采用多云策略已从技术选型升维至生存刚需。当业务系统分散部署在多个云平台时，基础设施的技术债呈现指数级积累。网络连接、身份认证、成本管理这三大核心挑战相互嵌套：跨云网络构建数据…...
在rocky linux 9.5上在线安装 docker
前面是指南，后面是日志 sudo dnf config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo sudo dnf install docker-ce docker-ce-cli containerd.io -y docker version sudo systemctl start docker sudo systemctl status docker …...
蓝桥杯 2024 15届国赛 A组 儿童节快乐
P10576 [蓝桥杯 2024 国 A] 儿童节快乐 题目描述 五彩斑斓的气球在蓝天下悠然飘荡，轻快的音乐在耳边持续回荡，小朋友们手牵着手一同畅快欢笑。在这样一片安乐祥和的氛围下，六一来了。 今天是六一儿童节，小蓝老师为了让大家在节…...
屋顶变身“发电站” ，中天合创屋面分布式光伏发电项目顺利并网！
5月28日，中天合创屋面分布式光伏发电项目顺利并网发电，该项目位于内蒙古自治区鄂尔多斯市乌审旗，项目利用中天合创聚乙烯、聚丙烯仓库屋面作为场地建设光伏电站，总装机容量为9.96MWp。 项目投运后，每年可节约标煤3670…...
[10-3]软件I2C读写MPU6050 江协科技学习笔记（16个知识点）
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16...
鸿蒙DevEco Studio HarmonyOS 5跑酷小游戏实现指南
1. 项目概述 本跑酷小游戏基于鸿蒙HarmonyOS 5开发，使用DevEco Studio作为开发工具，采用Java语言实现，包含角色控制、障碍物生成和分数计算系统。 2. 项目结构 /src/main/java/com/example/runner/├── MainAbilitySlice.java // 主界…...
重启Eureka集群中的节点，对已经注册的服务有什么影响
先看答案，如果正确地操作，重启Eureka集群中的节点，对已经注册的服务影响非常小，甚至可以做到无感知。 但如果操作不当，可能会引发短暂的服务发现问题。 下面我们从Eureka的核心工作原理来详细分析这个问题。 Eureka的…...
【Go语言基础【12】】指针：声明、取地址、解引用
文章目录 零、概述：指针 vs. 引用（类比其他语言）一、指针基础概念二、指针声明与初始化三、指针操作符1. &：取地址（拿到内存地址）2. *：解引用（拿到值） 四、空指针&am…...
苹果AI眼镜：从“工具”到“社交姿态”的范式革命——重新定义AI交互入口的未来机会
在2025年的AI硬件浪潮中，苹果AI眼镜（Apple Glasses）正在引发一场关于“人机交互形态”的深度思考。它并非简单地替代AirPods或Apple Watch，而是开辟了一个全新的、日常可接受的AI入口。其核心价值不在于功能的堆叠，而在于如何通过形态设计打破社交壁垒，成为用户“全天佩戴…...
嵌入式常见 CPU 架构
架构类型架构厂商芯片厂商典型芯片特点与应用场景PICRISC (8/16 位)MicrochipMicrochipPIC16F877A、PIC18F4550简化指令集，单周期执行；低功耗、CIP 独立外设；用于家电、小电机控制、安防面板等嵌入式场景8051CISC (8 位)Intel（原始…...