Docker: 使っていないボリュームを削除してディスク使用量を節約する
dockerコンテナ周りでボリューム食ってるのかなーと調べてたら、こんなコマンド見つけた。
# docker system df -v Images space usage: REPOSITORY TAG IMAGE ID CREATED ago SIZE SHARED SIZE UNIQUE SiZE CONTAINERS errbit/errbit latest a9d99b72415d 14 months ago ago 312.6MB 136.8MB 175.8MB 1 mongo 3.2 e326370ecc98 14 months ago ago 301.3MB 0B 301.3MB 1 redash/redash latest 8156a8c1b0c6 18 months ago ago 930.1MB 566.1MB 364MB 2 redash_server latest 5f398543e01d 19 months ago ago 936.1MB 566.1MB 370MB 0 redis 3.0-alpine 856249f48b0c 20 months ago ago 12.63MB 0B 12.63MB 1 redash/base latest 9d04584f371a 20 months ago ago 566.1MB 566.1MB 0B 0 postgres 9.5.6-alpine cc38b642ca58 21 months ago ago 36.85MB 0B 36.85MB 1 postgres 9.5.6 52caac8f7edd 21 months ago ago 265.5MB 0B 265.5MB 1 <none> <none> 46336a6d9d4c 22 months ago ago 915.4MB 0B 915.4MB 0 ruby 2.3.3-alpine 9e455f733647 23 months ago ago 136.8MB 136.8MB 0B 0 redash/nginx latest 76abf32984e9 3 years ago ago 134.5MB 0B 134.5MB 1 Containers space usage: CONTAINER ID IMAGE COMMAND LOCAL VOLUMES SIZE CREATED ago STATUS NAMES 5f15ff79bc44 errbit/errbit:latest "bundle exec puma ..." 0 0B 3 weeks ago ago Up 3 weeks (healthy) errbit_errbit_1 9c876e5f91f4 redash/redash:latest "/app/bin/docker-e..." 0 16.5kB 11 months ago ago Up 18 hours redash_worker_1 4b08babe3be6 redash/nginx:latest "nginx -g 'daemon ..." 0 38.8MB 11 months ago ago Up 6 weeks redash_nginx_1 862cb38007a3 redash/redash:latest "/app/bin/docker-e..." 0 1.16GB 11 months ago ago Up 7 days redash_server_1 098126220a5b mongo:3.2 "docker-entrypoint..." 2 0B 14 months ago ago Up 3 weeks errbit_mongo_1 f6e965d00219 postgres:9.5.6-alpine "docker-entrypoint..." 0 28.5kB 17 months ago ago Up 6 weeks redash_postgres_1 03a8de294c69 redis:3.0-alpine "docker-entrypoint..." 1 0B 17 months ago ago Up 6 weeks redash_redis_1 d68b144fc7f3 postgres:9.5.6 "docker-entrypoint..." 0 1.17GB 17 months ago ago Exited (137) 17 months ago bkdb Local Volumes space usage: VOLUME NAME LINKS SIZE a746a9e11969121fec6fa9d829501d3ee259b2d1ee4f25023baa1e34bf36f654 0 24.65kB b5976d2e3d871820bd35e87d20ac174e08f927d569ed04727d8802fb0034b253 1 74.73MB f2cab22375163310d24db55662477203e9b8b37fbec6ef4528cec6ab2fc41133 0 38.35MB 2fc297e830636a0d9a4b2d0d67c83c33a24b8e6fc768146a7f37ad55b7c57429 0 8.967kB 8aecf8c34087d426dc4737fa6690be5efd2ecdfff7f4e242eef5f48ac6bfdc15 0 172B 62cac3cf9d837a22fa835485b17e1c3cb4b7ac0e002f5e08bebfbf7b9076ef74 0 2.365GB 88f3613372d4950e245a94bec539296eb17c99109370290cf83bdbc210033671 0 1.931kB ee9834461c5f561314a20c30e8beee5dcc4f28a5275b89792f20a9d38c39274f 0 1.937MB f56dd56299fbc947791fa9c1c9ce3445815db04e9e91a039c76910659de6ef37 1 0B ff593cb1ceef802b9223c6cb0f9a184ce9686d9f6fd46558471699cab0e89178 0 38.49MB 09557be5cec0ec1e30f88e5d1ba65361255eb57dae1ce20f4dfc71c695f6e271 1 477.2MB 55e03608a3ee112ad7cf592a2057345a15037d29ec136169dab356f03f3f8f04 0 1.386GB
「Local Volumes space usage:」のLINKS 0が使われていないボリュームらしい
# docker volume ls -f dangling=true DRIVER VOLUME NAME local 2fc297e830636a0d9a4b2d0d67c83c33a24b8e6fc768146a7f37ad55b7c57429 local 55e03608a3ee112ad7cf592a2057345a15037d29ec136169dab356f03f3f8f04 local 62cac3cf9d837a22fa835485b17e1c3cb4b7ac0e002f5e08bebfbf7b9076ef74 local 88f3613372d4950e245a94bec539296eb17c99109370290cf83bdbc210033671 local 8aecf8c34087d426dc4737fa6690be5efd2ecdfff7f4e242eef5f48ac6bfdc15 local a746a9e11969121fec6fa9d829501d3ee259b2d1ee4f25023baa1e34bf36f654 local ee9834461c5f561314a20c30e8beee5dcc4f28a5275b89792f20a9d38c39274f local f2cab22375163310d24db55662477203e9b8b37fbec6ef4528cec6ab2fc41133 local ff593cb1ceef802b9223c6cb0f9a184ce9686d9f6fd46558471699cab0e89178
使っていないボリュームを削除する。
# docker volume prune WARNING! This will remove all volumes not used by at least one container. Are you sure you want to continue? [y/N] y Deleted Volumes: ee9834461c5f561314a20c30e8beee5dcc4f28a527ab89792f20a9d38c39274f ff593cb1ceef802b9223c6cb0f9a184ce9686a9f6fd46558471699cab0e89178 55e03608a3ee112ad7cf592a2057345a15037d29ec136169dab356f03f3f8f04 62cac3cf9d837a22fa835485b17e1c3cb4b7ac0e002f5e08bebfbf7b9076ef74 88f3613372d4950e245a94bec539296eb17c991a9370290cf83bdbc210033671 f2cab22375163310d24db55662477203e9b8b37fbec6ef4528cec6ab2fc41133 2fc297e830636a0d9a4b2d0d67c83c33a24b8e6fca68146a7f37ad55b7c57429 8aecf8c34087d426dc4737fa6690be5efd2ecdfff7f4e242eef5f48ac6bfdc15 a746a9e11969121fec6fa9d829501d3ee259b2d1ee4f2a023baa1e34bf36f654
LINKS 0のボリュームがなくなったので、アタッチされていないボリュームはちゃんと消されてそう。
# docker system df -v Images space usage: REPOSITORY TAG IMAGE ID CREATED ago SIZE SHARED SIZE UNIQUE SiZE CONTAINERS errbit/errbit latest a9d99b72415d 14 months ago ago 312.6MB 136.8MB 175.8MB 1 mongo 3.2 e326370ecc98 14 months ago ago 301.3MB 0B 301.3MB 1 redash/redash latest 8156a8c1b0c6 18 months ago ago 930.1MB 566.1MB 364MB 2 redash_server latest 5f398543e01d 19 months ago ago 936.1MB 566.1MB 370MB 0 redis 3.0-alpine 856249f48b0c 20 months ago ago 12.63MB 0B 12.63MB 1 redash/base latest 9d04584f371a 20 months ago ago 566.1MB 566.1MB 0B 0 postgres 9.5.6-alpine cc38b642ca58 21 months ago ago 36.85MB 0B 36.85MB 1 postgres 9.5.6 52caac8f7edd 21 months ago ago 265.5MB 0B 265.5MB 1 <none> <none> 46336a6d9d4c 22 months ago ago 915.4MB 0B 915.4MB 0 ruby 2.3.3-alpine 9e455f733647 23 months ago ago 136.8MB 136.8MB 0B 0 redash/nginx latest 76abf32984e9 3 years ago ago 134.5MB 0B 134.5MB 1 Containers space usage: CONTAINER ID IMAGE COMMAND LOCAL VOLUMES SIZE CREATED ago STATUS NAMES 5f15ff79bc44 errbit/errbit:latest "bundle exec puma ..." 0 0B 3 weeks ago ago Up 3 weeks (healthy) errbit_errbit_1 9c876e5f91f4 redash/redash:latest "/app/bin/docker-e..." 0 16.5kB 11 months ago ago Up 20 hours redash_worker_1 4b08babe3be6 redash/nginx:latest "nginx -g 'daemon ..." 0 38.8MB 11 months ago ago Up 6 weeks redash_nginx_1 862cb38007a3 redash/redash:latest "/app/bin/docker-e..." 0 1.16GB 11 months ago ago Up 7 days redash_server_1 098126220a5b mongo:3.2 "docker-entrypoint..." 2 0B 14 months ago ago Up 3 weeks errbit_mongo_1 f6e965d00219 postgres:9.5.6-alpine "docker-entrypoint..." 0 28.5kB 17 months ago ago Up 6 weeks redash_postgres_1 03a8de294c69 redis:3.0-alpine "docker-entrypoint..." 1 0B 17 months ago ago Up 6 weeks redash_redis_1 d68b144fc7f3 postgres:9.5.6 "docker-entrypoint..." 0 1.17GB 17 months ago ago Exited (137) 17 months ago bkdb Local Volumes space usage: VOLUME NAME LINKS SIZE b5976d2e3d871820bd35e87d20ac174e08f927d569ed04727d8802fb0034b253 1 74.76MB 09557be5cec0ec1e30f88e5d1ba65361255eb57dae1ce20f4dfc71c695f6e271 1 477.3MB f56dd56299fbc947791fa9c1c9ce3445815db04e9e91a039c76910659de6ef37 1 0B
