如何显示当前主机上，docker占用的空间情况？
docker占用主机磁盘资源了？ 查查看，到底是docker占用了哪些资源？
命令非常的简单
docker system df
说说每个字段的意思：
Images:
- TOTAL 当前环境，一共有多少个镜像（去除镜像ID相同的）
- ACTIVE 实际上被使用的镜像数量
- RECLAIMABLE，没有被使用的镜像，占用的空间，删除后，可释放空间。
Containers
- TOTAL ,docker ps -a看到的总共的容器数
- ACTIVE，docker ps 看到的实际在运行的容器数量
- RECLAIMABLE，docker ps -a 状态为Exited状态的容器占用的空间，删除后，可释放的空间。
那更加详细的看的话，命令也非常的简单
docker system df -v
输出结果像这样
[root@nctest-snap-test-02 ~]# docker system df -v Images space usage: REPOSITORY TAG IMAGE ID CREATED SIZE SHARED SIZE UNIQUE SIZE CONTAINERS <none> <none> e329d879d43c 4 months ago 449.6MB 449.6MB 0B 0 nginx 1.13-alpine ad88d01dbfae 4 months ago 309.8MB 108.3MB 201.5MB 0 172.20.58.152/python/python 3.10.4 73381281305e 4 months ago 919.4MB 0B 919.4MB 1 nextcloud latest 84ae277ac573 4 months ago 955.5MB 0B 955.5MB 1 172.20.58.152/database/mysql 5.7.37 f26e21ddd20d 4 months ago 449.6MB 449.6MB 0B 0 172.20.58.152/database/mysql 8.0.28 667ee8fb158e 4 months ago 520.7MB 136.6MB 384.1MB 1 172.20.58.152/database/mariadb 10.7.3 6e0162b44a5f 5 months ago 414.1MB 0B 414.1MB 0 172.20.58.152/kubernetes/calico/typha v3.21.4 c1ea2825a933 7 months ago 127.4MB 0B 127.4MB 0 172.20.58.152/kubernetes/calico/cni v3.21.4 f1de15d70851 7 months ago 235.5MB 0B 235.5MB 0 172.20.58.152/kubernetes/calico/node v3.21.4 c59896fc7ca4 7 months ago 211.9MB 0B 211.9MB 0 172.20.58.152/middleware/gitlab-ce latest 46cd6954564a 7 months ago 2.364GB 72.78MB 2.291GB 1 pinpointdocker/pinpoint-hbase 2.3.3 c40d61241356 7 months ago 1.093GB 0B 1.093GB 1 pinpointdocker/pinpoint-mysql 2.3.3 dce1f13614a3 7 months ago 468MB 0B 468MB 1 pinpointdocker/pinpoint-flink 2.3.3 78d25986e364 7 months ago 626.4MB 0B 626.4MB 2 pinpointdocker/pinpoint-collector 2.3.3 798fe5b30833 7 months ago 197.3MB 104.8MB 92.47MB 1 pinpointdocker/pinpoint-agent 2.3.3 05ade5accf8c 7 months ago 39.5MB 0B 39.5MB 1 pinpointdocker/pinpoint-quickstart latest 73a25a6148ae 7 months ago 309.4MB 0B 309.4MB 1 pinpointdocker/pinpoint-web 2.3.3 71972a41e758 7 months ago 221.5MB 104.8MB 116.7MB 1 gotok8s/kube-apiserver v1.23.1 b6d7abedde39 8 months ago 135.2MB 3.869MB 131.3MB 0 172.20.58.152/kubernetes/kube-proxy-amd64 v1.23.1 b46c42588d51 8 months ago 112.3MB 0B 112.3MB 0 172.20.58.152/kubernetes/kube-scheduler-amd64 v1.23.1 71d575efe628 8 months ago 53.49MB 3.869MB 49.62MB 0 172.20.58.152/kubernetes/kube-controller-manager-amd64 v1.23.1 f51846a4fd28 8 months ago 125MB 3.869MB 121.1MB 0 rabbitmq latest d445c0adc9a5 8 months ago 220.2MB 75.25MB 144.9MB 0 172.20.58.152/database/mongo 5.0.5 dfda7a2cf273 8 months ago 692.6MB 72.78MB 619.9MB 1 <none> <none> 9a8e1ec1235e 8 months ago 309.2MB 108.3MB 200.9MB 0 172.20.58.152/middleware/rabbitmq 3.9 c10b0f4fd126 8 months ago 219.9MB 75.25MB 144.7MB 0 redis 6.2.6 40c68ed3a4d2 9 months ago 112.7MB 0B 112.7MB 0 postgres 9 7a6817286183 9 months ago 199.8MB 0B 199.8MB 0 172.20.58.152/middleware/mysql 8.0.27 b05128b000dd 9 months ago 515.6MB 0B 515.6MB 0 tomcat 9.0.53-jdk8u202-alpine 276e0060c50a 9 months ago 509.2MB 5.624MB 503.6MB 0 172.20.58.152/middleware/consul latest 60b5d5d7aa05 9 months ago 117.8MB 5.624MB 112.2MB 1 quay.io/coreos/flannel v0.15.1-amd64 e6ea68648f0c 9 months ago 69.52MB 5.624MB 63.89MB 0 alpine 3.13 6b7b3256dabe 9 months ago 5.624MB 5.624MB 0B 5 prom/prometheus latest c10e9cbf22cd 9 months ago 194.1MB 0B 194.1MB 0 172.20.58.152/kubernetes/coredns v1.8.6 a4ca41631cc7 10 months ago 46.83MB 0B 46.83MB 0 kubeoperator/webkubectl latest 61cd0f320949 11 months ago 239.2MB 0B 239.2MB 1 zookeeper 3.4 4b03fe5b3f64 15 months ago 259.7MB 0B 259.7MB 3 goharbor/chartmuseum-photon v1.10.3 f4cd7df55b4a 2 years ago 177.6MB 33.7MB 143.9MB 0 goharbor/harbor-migrator v1.10.3 524036d275a6 2 years ago 357MB 33.7MB 323.3MB 0 goharbor/redis-photon v1.10.3 6562f3c58b71 2 years ago 118.6MB 33.7MB 84.9MB 1 goharbor/clair-photon v1.10.3 3c0b186089bd 2 years ago 170.7MB 33.7MB 137MB 0 goharbor/notary-server-photon v1.10.3 d0f003ba5021 2 years ago 142.8MB 33.7MB 109.1MB 0 goharbor/harbor-registryctl v1.10.3 2ee885ed2f2d 2 years ago 101.8MB 33.7MB 68.09MB 1 goharbor/registry-photon v1.10.3 f470058ab661 2 years ago 84.47MB 33.7MB 50.78MB 1 goharbor/nginx-photon v1.10.3 8c88b468cdb0 2 years ago 43.6MB 33.7MB 9.902MB 1 goharbor/harbor-log v1.10.3 b0c9e48d015e 2 years ago 82.01MB 33.7MB 48.31MB 1 goharbor/harbor-jobservice v1.10.3 044b1a98e9ac 2 years ago 143MB 33.7MB 109.3MB 1 goharbor/harbor-core v1.10.3 6521cd80151b 2 years ago 129.3MB 33.7MB 95.64MB 1 goharbor/harbor-portal v1.10.3 7d107a7d6eb8 2 years ago 51.7MB 33.7MB 18.01MB 1 goharbor/harbor-db v1.10.3 7d10c16f9b2e 2 years ago 156.8MB 33.7MB 123.1MB 1 goharbor/prepare v1.10.3 be46b57a9105 2 years ago 162.9MB 33.7MB 129.2MB 0 reg.yyuap.io/c87e2267-1001-4c70-bb2a-ab41f3b81aa3/am-fa 20200522203451 5445d67547a7 2 years ago 930.3MB 0B 930.3MB 1 172.20.58.152/tools/polinux/stress latest df58d15b053d 2 years ago 9.744MB 0B 9.744MB 0 nginx 1.13.5 1e5ab59102ce 4 years ago 108.3MB 108.3MB 0B 0 Containers space usage: CONTAINER ID IMAGE COMMAND LOCAL VOLUMES SIZE CREATED STATUS NAMES da46f3e08edf 6b7b3256dabe "sh" 0 22B 6 weeks ago Exited (0) 6 weeks ago xenodochial_tereshkova b835bb0b8470 6b7b3256dabe "sh" 0 14B 6 weeks ago Exited (0) 6 weeks ago dazzling_panini 34179402e26f 6b7b3256dabe "sh" 0 14B 6 weeks ago Exited (0) 6 weeks ago awesome_shaw 4fb39d4a5650 6b7b3256dabe "sh" 0 56B 6 weeks ago Exited (0) 6 weeks ago funny_liskov 2a5c2b122f29 alpine:3.13 "/bin/sh" 0 0B 7 weeks ago Exited (0) 7 weeks ago thirsty_curie c8e146a19d1c reg.yyuap.io/c87e2267-1001-4c70-bb2a-ab41f3b81aa3/am-fa:20200522203451 "/usr/bin/dumb-init …" 0 152B 2 months ago Exited (129) 8 weeks ago peaceful_morse 77b98cdbd1f1 pinpointdocker/pinpoint-quickstart "catalina.sh run" 1 7.11kB 4 months ago Exited (143) 4 months ago pinpoint-quickstart aef1c390043d pinpointdocker/pinpoint-agent:2.3.3 "/usr/local/bin/conf…" 1 0B 4 months ago Exited (137) 4 months ago pinpoint-agent 52c089188d8b pinpointdocker/pinpoint-web:2.3.3 "sh /pinpoint/script…" 0 1.21MB 4 months ago Exited (143) 4 months ago pinpoint-web 0cd48a61a095 pinpointdocker/pinpoint-collector:2.3.3 "sh /pinpoint/script…" 0 1.35MB 4 months ago Exited (143) 4 months ago pinpoint-collector e2f461c6b044 pinpointdocker/pinpoint-flink:2.3.3 "/docker-bin/docker-…" 0 9.84kB 4 months ago Exited (143) 4 months ago pinpoint-flink-taskmanager f5e19e684ec8 pinpointdocker/pinpoint-hbase:2.3.3 "/bin/sh -c '/usr/lo…" 2 2.07MB 4 months ago Exited (137) 4 months ago pinpoint-hbase 60f5253169d5 pinpointdocker/pinpoint-flink:2.3.3 "/docker-bin/docker-…" 0 90.7MB 4 months ago Exited (137) 4 months ago pinpoint-flink-jobmanager 0db5d4fe6c36 pinpointdocker/pinpoint-mysql:2.3.3 "docker-entrypoint.s…" 1 80B 4 months ago Exited (0) 4 months ago pinpoint-mysql 11373da3a578 zookeeper:3.4 "/docker-entrypoint.…" 3 3.85kB 4 months ago Exited (143) 4 months ago pinpoint-docker-master_zoo1_1 e0083cfd6950 zookeeper:3.4 "/docker-entrypoint.…" 3 3.85kB 4 months ago Exited (143) 4 months ago pinpoint-docker-master_zoo3_1 5380b31c936c zookeeper:3.4 "/docker-entrypoint.…" 3 3.88kB 4 months ago Exited (143) 4 months ago pinpoint-docker-master_zoo2_1 db452fa3b29e 172.20.58.152/database/mysql:8.0.28 "docker-entrypoint.s…" 0 0B 4 months ago Exited (0) 4 months ago mysql-8.0.28 2e4fc9deeb1d python:3.10.4 "bash" 0 975kB 4 months ago Exited (0) 4 months ago busy_noyce 11fdb7cb576f nextcloud "/entrypoint.sh apac…" 0 1.38kB 4 months ago Exited (0) 4 months ago nextcloud 8b9cbb9f74fa 172.20.58.152/middleware/gitlab-ce:latest "/assets/wrapper" 0 2.36MB 4 months ago Exited (137) 4 months ago gitlab-ce eb692da20b3a 172.20.58.152/database/mongo:5.0.5 "docker-entrypoint.s…" 1 509B 4 months ago Exited (255) 4 months ago mongodb 3ffc4d8da0e0 goharbor/nginx-photon:v1.10.3 "nginx -g 'daemon of…" 3 2B 4 months ago Up 2 months (healthy) nginx d3afcbda17c5 goharbor/harbor-jobservice:v1.10.3 "/harbor/harbor_jobs…" 0 0B 4 months ago Up 2 months (healthy) harbor-jobservice 5924fe60c7a7 goharbor/harbor-core:v1.10.3 "/harbor/harbor_core" 0 0B 4 months ago Up 2 months (healthy) harbor-core c6c86a7af5c5 goharbor/harbor-db:v1.10.3 "/docker-entrypoint.…" 0 59B 4 months ago Up 2 months (healthy) harbor-db 1ad5b2ac73dd goharbor/harbor-registryctl:v1.10.3 "/home/harbor/start.…" 1 1.64MB 4 months ago Up 2 months (healthy) registryctl 8d585ea4bb66 goharbor/redis-photon:v1.10.3 "redis-server /etc/r…" 0 0B 4 months ago Up 2 months (healthy) redis 807c386453ba goharbor/registry-photon:v1.10.3 "/home/harbor/entryp…" 1 1.64MB 4 months ago Up 2 months (healthy) registry dbc12f040354 goharbor/harbor-portal:v1.10.3 "nginx -g 'daemon of…" 3 2B 4 months ago Up 2 months (healthy) harbor-portal 65bda89313e4 goharbor/harbor-log:v1.10.3 "/bin/sh -c /usr/loc…" 2 492B 4 months ago Up 2 months (healthy) harbor-log 6f4d260a59df consul "docker-entrypoint.s…" 1 36B 5 months ago Exited (1) 4 months ago consul ea1eab9f347b kubeoperator/webkubectl "sh /opt/webkubectl/…" 0 323B 6 months ago Exited (137) 2 months ago webkubectl Local Volumes space usage: VOLUME NAME LINKS SIZE 748cda2a493f71049cebc91839f2118ada8f0cd3313b811674069e75b7c91063 0 22B bb6b5aad8d76aa768b89ba1e36fc71c2d6804ff355ac1cb1a8a2d7f41e1fc691 1 22B c0d7d2995bcc23383c019efc6f653f028fd397f9578273a65cdc5707c3866390 1 67.11MB 3fab0aa992a89f5d7986a9ad559b005c9078c7d1991e242bef0ae6990ef27933 0 0B ebd4c50155c0db8cce88ff4254c7cfc3b4151f413804fd5afd60c6067acc7707 0 4B 5efad55d4944e459c98133155a2e0eb88890af853d9c646cf36f1e05dc3e46c4 1 0B f457125bad2ab614b515c0281891948693e80617e5bdb02dafa75c9cb4092a76 0 191.7MB 8b9cf33d6e414bdf660b7080563b2212a8c154d80f7f8db5b0f09da08eb6201b 0 0B e4d9ee8432e825dac6a43c19685f843cc379e9924ce83bcb2b560f1172256515 0 3.057GB pinpoint-docker-master_mysql_data 1 208.9MB 494ef2bdd9f90a83ba1e204dab333d5722748463a64025e9b381ed3779120658 1 300B 01b6a3a4ae4f78b49948384617a1500f46a39222cdb69b997dbad33d0d4bb148 0 0B 20d8b04dc2c9f8ac84e906f66a97282981deb2048da4fb372ca6211457cee23d 0 0B 873762fd68671a7ff17c17d998d05e7a929a17fbb0a2ccce44c705981d2d68ef 0 22B a75faca061538b72d5305adef50b77c031ac83af835c2f77b2ee63a5f9a4cb66 0 140.7MB ab09095854535d66b3be9548d07684e76159db1c7d554ba2db7d8f228a4af9c7 0 0B e220820b8eb9dfb4326bc3fb19e86f3c64a911c0a571e11b5a3a255565832c59 0 315.1MB f6ec74bd8f086eec852d69547a5e5b2366c7d394e3e4ed8367d7975b8321caaf 0 4B 3234fe654fa6b0fd3ab0350e9f6ac9450dfcd06f4f2397bed76e6081300f6fa3 1 67.11MB 2eaf39411106a30d4cfa5e0aae9275860b87a4d5a0ff7ceb6d51b2074ca944e7 0 0B 445fb5500c5a71c51eafb4abb74870c2132138be59ecf34b8ac4a87f3751eda6 0 0B 46e9cd943d737d06288b3cf0f360505902ee68cc9f06c92497d90f401aa73328 1 0B c6fa6574cea4dda7a84a11f2aae62791c57c74aa09d76aa408e63f6b6833357f 0 772.8kB ca1e3124a69e4ede52ce2139f2173105d9e580793a2ac40af6639814caeaa4f3 0 69.67MB e3807d78208591462148e8e62e11f2a930a6fbf5b3b3502db7db11f63f2c9713 1 0B a871b2d7e0af8fef22e152d8d8dbc664c3db4a041e1f0ef4fa1a009b11691ec4 1 0B 8de6f48d24780dd6f784b065f582514bff75df770b3ff0b45b64aa4559e57856 0 4B 8de91ac691df2335ba3f55866a096101d781d51ade9445206ec8173cf67ea738 0 152.5kB e2608f95c3dcb330196ccfb9e01cc2f3ffd594a28883b5a3d1e649de489c559d 0 0B 2a3aa156416277e0b54a5c4995c922d4a7753ff9db9f4aceaed45d4e2a7effbf 1 0B 517d20daee0ff407db15a7c0b03691945ac79e501ccc29c0e8cb332e98ea35d3 0 314.8MB 53fe182f98fa877f4e8a596d4213c72905c33e13f0bc48dc0f4f35a3a167402e 0 22B 6ac3fa39c685396310ee9c1da218679ec23db70d36427e9ea618806a36399b72 0 0B 6ba39a2d1a535dd94af405f8bfa1dbc3850bfb7916dfc8887953bf5f6e385f51 0 0B pinpoint-docker-master_data-volume 2 32.5MB d60a91fe2ce1e8abcb0481e27fdae49b18f830a5dc6b53fb78a2a8acc03c2002 1 0B 360c13a331d7ef13d9175f36c84cf4a9efe2e90004ddd6b28efadf9699f0f507 0 0B 87e374d4c5e20b860f1d4c1c13ab2a7f92878bedc015fe3f3116ef11054b4b3c 0 0B anchore_anchore-db-volume 0 691.2MB ce5f7777c4774b447f2eec0ecb7ffbf8f683f3f03bb4733a23649c775515f3c1 0 0B 727c5b3df537e25d7d2881119d7c78e4a3322f1b8728ef3bea7c4901f1cce88f 0 0B 792b29a02390aa5d47743307b880efcd409c6b07d5b82795a3e14c4d34d27439 0 0B 897f57f20c4a2e0d50013ef96c82a8342484c9248b2c5ba69c3c379cda5a87dd 0 0B b1ff6043a51f56a4055dc01b0e21b863ee2d8858f2dfca04e8a54dd047abf74c 0 0B 2d9d7ff592b5e1b390fbafddd3a7e4f80ad5b519302070c91dad1e24dcbfee49 0 0B 53b52d7ff16275106adeb0a4a6a6a3fb80a078f4b6e6ea7386253f02396b8d23 1 36B 4f53b1742573d5e442047642bc4139b7dad637c384c41386835beda3f38e1064 1 0B 7b5769045cccfb59de9301432220a4da86946774e70681ec85c640c393beb842 0 152.5kB 91f4e9e97fc1bfc4516bb0da1721d0ffd59249cb2ef65312ebee32c5087ac03a 1 0B ed66ff4c1088c4f917d51d0a4507d6915b5c9466872862969eea477cc1f4d095 0 0B 18b50d674749802b297713cbafcb0266486c1be5ff5e914dbde13d06999085d8 1 4B 958a3cf5e169a7c7b0af08ed0999fd8e9ba20a537b6ba447f5cb525e5cf62447 1 4B e1033960ae7c14aca5ee4cfce0ab34a14d2bc0f7eb33b6d7f65c71aa314e74cc 0 0B 1909eecd7d5dc8114c8b34a11ef992075430281a52e34faf01557bdb6f15f191 0 0B 1f922b0bc26cf5d3c3e4d24e1fa2b90e5d6ee7c2c9bcff131466fabafb01ba52 1 22B 34246b7cd55a1f7c9162b1fdbeb59d0f4c8e1550edd874f84ec4a0810eb862ec 0 476B 49a53ee471bb0e2d480ed64e7b514c057101ad69d2a134fc462eab74533ac90e 0 0B 5c4bd6d7fbdf4805e429c5b8a8d0b304dc1454157bdb9bc757f2c34d568719f3 1 0B 664c9a8a9c71893180f79dc722a67699cee069073b4a88dcff506bf0f1c52de0 1 0B 86fe4a2a7b22d64636e18f7a2059afb3773b6a0baf990a952e895e961b2896be 1 0B fea84acdc909f2f66f841e48865a41ec41dabfa5039505d203ba40f5ffe71f2e 0 22B 2ca5bf1f048828aedbe50926b1becec24011726cbd9624c1484dafe602541624 1 4B 494650fcf1def9df852060e9f547bd971ad4ac3627587831be81b495afb69218 0 476B 5f60d097b2e6e5bd544642ee3a23b55eddcc3a2e338f09dfff29ed1edce600f1 0 22B 2bf4b39c3f1e7d13b80610ceb8c6bb5692393f9542e78d2ef1431de118cca7de 1 67.11MB 6868db7d9220591a2514706b890e19b9a20fe24313f4cbe8e31ef8aed6b2d6a5 0 36B 331f024d252c799c3bac6779a39b6a6ace1b39b4656d68b1f1d4190c94b36a73 1 1.142MB fe7735e16a0cc92e8bf112d79fd2d69e341d27fb4d928c6aa63078647d4ade15 1 0B c3fb20d4e585a95de96c5cc559506d2ecc7bf3336e6ee9af43316f49ad42637b 0 0B e22391b97164fadf5971457768f1be953000016dbcac8f1de414550054aa43cf 0 0B Build cache usage: 0B CACHE ID CACHE TYPE SIZE CREATED LAST USED USAGE SHARED [root@nctest-snap-test-02 ~]#
接下来，要定位谁占用的空间大，不是一目了然了吗
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