ืืขืื, ืืืืจ! ืืื ืคืึธืจืฉืืขืื ืฆื ืืืื ืืคืืขืจืงืืึทืืงืืึทื ืึท ืืืืขืจืืขืฆืื ื ืคืื ืืขื ืึทืจืืืงื ืืขืจ ืืืืจ .
ืืืึทื ื ืืืจ ืืืขืื ืจืขืื ืืืขืื ืืื Docker ื ืืฆื ืื ืืืกืง ืคึผืืึทืฅ ืคืื ืืขืจ ืืึทืืขืืึธืก ืืึทืฉืื, ืืื ืืืจ ืืืขืื ืืืื ืืขืคึฟืื ืขื ืืืืก ืืื ืฆื ืืึทืคืจืืึทืขื ืืขื ืคึผืืึทืฅ ืคืื ืกืงืจืึทืคึผืก ืคืื ืึทื ืืืื ืืืืืขืจ ืืื ืงืึทื ืืืื ืขืจื.
ืืึทื ืฅ ืงืึทื ืกืึทืืฉืึทื
ืืึธืงืขืจ ืืื ืึท ืงืื ืืึทื, ืืืกืืึธืืข ืืืืื ืืง ืืขื ืืฉื ืฆืืืืืคื ืขืก ืืืึทื ื. ืืืืื ืึท ืืืกื ืืึธืจื ืฆืืจืืง, ืืขื ืคึผืจืึธืืืงื ืืื ืืื ืื ืึท ืืึธืจ ื ืืึทืข ืืืขื ืฆื ืืืืขื, ืฆืืฉืืขืื ืืื ืืืืคื ืงืืื ืกืืืืืืข, ืึทืืึทืืื ื ืืื ืื ืฆื ืืืืืืืืง ืฉืคึผืึธืจื ืงืคึผื ืืื ืืึทืจืึทื ืจืขืกืืจืกื. ืืื ืึทืืืฉืึทื ืฆื ืืขื (ืืื ืคึฟืึทืจ ืขืืืขืืข ืืึธืก ืืืขื ืืืื ืื ืืขืจืกื ืืืืืืืง ืืึทื) ืืึธืงืขืจ ืืื ืืขืจืืืืื ืืื ืื ืฆื ืื ืงืจืขืืึทืืื ืคืึทืจืคึผืึธืฉืขืืขืจื ืืื ืืื ืึทืคืืื ืื ืืืคืขืกืืงืืข ืคืึทืจืืืึทืืืื ื ืคืื ืืื ืืืขืจ ืคึผืจืึธืืืงืฆืืข ืื ืืืืืจืึทื ืืึทื ืฅ.
ืึธืืขืจ, ืึทืืข ืื ืืืืืืฅ ืคืื ืืึธืืขืจื ืืขืื ืงืืืขื ืฆื ืึท ืคึผืจืืึทื. ืืืขื ืืืจ ืืืืคื ืงืึทื ืืืื ืขืจื, ืืจืืคืงืืคืืข ืึธืืขืจ ืฉืึทืคึฟื ืืื ืืืขืจ ืืืืืขื ืข ืืืืืขืจ ืืื ืฆืขืืืืงืืขื ืงืึธืืคึผืืขืงืก ืืงืึธืืกืืกืืึทืื, ืืืจ ืืึธืื ืฆื ืืึทืฆืึธืื. ืืื ืืืจ ืืึทืฆืึธืื, ืฆืืืืฉื ืื ืืขืจืข ืืืื, ืืื ืืืกืง ืคึผืืึทืฅ.
ืืืื ืืืจ ืืึธื ืงืืื ืืึธื ืืขืืึทื ืง ืืืขืื ืืื ืคืื ืคึผืืึทืฅ ืืึธืงืงืขืจ ืึทืงืฉืื ื ืขืื ืืืืฃ ืืืื ืืึทืฉืื, ืืืจ ืงืขื ืืืื ืึทื ืคึผืืขืืึทื ืืื ืกืึทืคึผืจืืืื ืืืจื ืื ืจืขืืืืืึทื ืคืื ืืขื ืืึทืคึฟืขื:
$ docker system df
ืืึธืก ืืืืืื ืืึธืงืขืจ ืก ืืืกืง ืืึทื ืืฅ ืืื ืคืึทืจืฉืืืขื ืข ืงืึทื ืืขืงืกืฅ:
- ืืืืืขืจ - ืื ืืึทื ืฅ ืืจืืืก ืคืื ืืืืืขืจ ืืืึธืก ืืขื ืขื ืืึทืื ืืึธืืืื ืคึฟืื ืืืื ืจืืคึผืึทืืึทืืึธืจืื ืืื ืืขืืืื ืืืืฃ ืืืื ืกืืกืืขื;
- ืงืึทื ืืืื ืขืจื - ืื ืืึทื ืฅ ืกืืืข ืคืื โโืืืกืง ืคึผืืึทืฅ ืืขื ืืฆื ืืืจื ืคืืืกื ืืืง ืงืึทื ืืืื ืขืจื (ืืืึทืืฉ ืื ืืึทื ืฅ ืืึทื ื ืคืื ืืืืขื ืขื-ืฉืจืืึทืื ืืืึทืขืจืก ืคืื ืึทืืข ืงืึทื ืืืื ืขืจื);
- ืืืืข ืืืึทืืืืื - ืื ืืึทื ื ืคืื ืืืืข ืกืืึธืจืืืืฉ ืืึธืื ืืขื ืฆื ืงืึทื ืืืื ืขืจื;
- ืืืืขื ืงืึทืฉ - ืฆืืืืืืืืืืืข ืืขืงืขืก ืืืฉืขื ืขืจืืืืึทื ืืืจื ืื ืืืื ืื ืื ืคึผืจืึธืฆืขืก (ื ืืฆื ืื BuildKit ืืขืฆืืึทื, ืื ืืืฆื ืกืืึทืจืืื ื ืืื Docker ืืืขืจืกืืข 18.09).
ืืื ืืขืืืขื ืึทื ื ืึธื ืืขื ืคึผืฉืื ืึทืจืืืขืจืคืืจื ืืืจ ืืขื ื ืืึธืขื ืฆื ืจืืื ืืืื ืืืกืง ืคืื ืืืกื ืืื ืืจืขื ืืขื ืืืึทืขืจ ืืืืืืืื ืฆืืจืืง ืฆื ืืขืื (ืืึทืืขืจืงืื ื: ืกืคึผืขืฆืืขื ืืืื ืืืจ ืืึทืฆืึธืื ืืื ืืขื ืคึฟืึทืจ ืื ืืืืืืืื ืืขืืขืจ ืืืืฉ).
ืืืกืง ืืึทื ืืฅ ืืืจื ืงืึทื ืืืื ืขืจื
ืืขืืขืจ ืืึธื ืืืจ ืฉืึทืคึฟื ืึท ืงืึทื ืืืื ืขืจ ืืืืฃ ืืขืจ ืืึทืืขืืึธืก ืืึทืฉืื, ืขืืืขืืข ืืขืงืขืก ืืื ืืืืจืขืงืืขืจืื ืืขื ืขื ืืืฉืืคื ืืื ืื /var/lib/docker ืืืขืืืืืึทืืขืจ, ืฆืืืืฉื ืืืึธืก ืื ืคืืืืขื ืืข ืืขื ืขื ืืืื ืฆื ืืืืขืจืงื:
- Directory /var/lib/docker/containers/container_ID - ืืืขื ืืืจ ื ืืฆื ืื ื ืึธืจืืึทื ืืึธืืื ื ืฉืึธืคืขืจ, ืืึธืก ืืื ืืื ืืขืฉืขืขื ืืฉ ืืึธืืก ืืขื ืขื ืืขืจืืืขืืืขื ืืื JSON ืคึฟืึธืจืืึทื. ืฆื ืืืืืืื ืืึธืืก, ืืื ืืขืืื ื ืืื ืืึธืืก ืึทื ืงืืื ืืืื ืขืจ ืืืืขื ื ืึธืืขืจ ืึทื ืืขืจืฉ ืคึผืจืึทืกืขืกืึทื, ืึธืคื ืืจืื ื ืืืกืงืก ืฆื ืืืขืจื ืคืื.
- ืื /var/lib/docker/overlay2 ืืืขืืืืืึทืืขืจ ืึผืืื ืื ืงืึทื ืืืื ืขืจ ืืืืขื ืขื-ืฉืจืืึทืื ืืืึทืขืจืก (ืึธืืืขืจืืืึท2 ืืื ืืขืจ ืืืืืขืจ ืฉืึธืคืขืจ ืืื ืจืืึฟ ืืื ืืงืก ืืืกืืจืืืืืฉืึทื ื). ืืืื ืืขืจ ืงืึทื ืืืื ืขืจ ืกืืึธืจื ืืึทืื ืืื ืืืื ืืขืงืข ืกืืกืืขื, ืขืก ืืื ืืื ืืขื ืืืขืืืืืึทืืขืจ ืึทื ืขืก ืืืขื ืืืื ืืขืฉืืขืื.
ืืึธืืืจ ืืืึทืืืฉืึทื ืึท ืกืืกืืขื ืืืืฃ ืืืึธืก ืึท ืคึผืจืืกืืื ืข ืืึธืงืงืขืจ ืืื ืืื ืกืืึทืืืจื, ืืืึธืก ืืื ืงืืื ืืึธื ืืขืืืขื ืื ืืืึทืืืื ืืื ืงืึทืืขืจ ืงืึทื ืืืื ืขืจื ืึธืืขืจ ืืืืขื ืืืืืขืจ. ืืืื ืืืกืง ืคึผืืึทืฅ ืืึทื ืืฅ ืืึทืจืืื ืืืขื ืงืืงื ืืื ืืึธืก:
$ docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 0 0 0B 0B
Containers 0 0 0B 0B
Local Volumes 0 0 0B 0B
Build Cache 0 0 0B 0Bืืึธืืืจ ืงืึทืืขืจ ืขืืืขืืข ืงืึทื ืืืื ืขืจ, ืืืฉื, NGINX:
$ docker container run --name www -d -p 8000:80 nginx:1.16ืืืึธืก ืืึทืคึผืึทื ื ืฆื ืื ืืืกืง:
- ืืืืืขืจ ืคืึทืจื ืขืืขื 126 ืืขืืืืืืื, ืืึธืก ืืื ืืขืจ ืืขืืืืงืขืจ NGINX ืืืึธืก ืืืจ ืืึธื ืืฉื ืืื ืืขื ืงืึทื ืืืื ืขืจ;
- ืงืึทื ืืืื ืขืจื ื ืขืืขื ืึทืจืืืฃ ืึท ืืขืืขืจืืขื 2 ืืืืขืก.
$ docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 1 1 126M 0B (0%)
Containers 1 1 2B 0B (0%)
Local Volumes 0 0 0B 0B
Build Cache 0 0 0B 0Bืืืืื ืืกืงื ื, ืืึธืื ืืืจ ื ืึธื ื ืืฉื ืงืืื ืคึผืืึทืฅ ืืืึธืก ืืืจ ืงืขื ืขื ืืึทืคืจืืืขื. ืืื ื 2 ืืืืขืก ืืื ืืึธืจ ืืืืืืืื ืืงืข, ืืึธืื ืืื ืื ืืืึทืืืฉืึทื ืึทื ืืื ืืืขืจ NGINX ืึทื ืืงืกืคึผืขืงืืืืื ืืขืฉืจืืื ืขืจืืขืฅ 100 ืืขืืืืืื ืคืื ืืึทืื ืืื ืืืฉืืคื ืึท ืืขืงืข test.img ืคืื ืคึผืื ืงื ืืขื ืืจืืืก ืืื ืืื.
$ docker exec -ti www
dd if=/dev/zero of=test.img bs=1024 count=0 seek=$[1024*100]ืืื ืก ืื ืืขืจืืืื ืื ืืืกืง ืคึผืืึทืฅ ืืึทื ืืฅ ืืืืฃ ืืขืจ ืืึทืืขืืึธืก ืืืืืขืจ. ืืืจ ืืืขืื ืืขื ืึทื ืืขืจ ืงืึทื ืืืื ืขืจ (ืงืึธื ืืึทืงืืขืจื) ืึทืงืืึทืคึผืืื 100 ืืขืืืืืื ืืึธืจื.
$ docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 1 1 126M 0B (0%)
Containers 1 1 104.9MB 0B (0%)
Local Volumes 0 0 0B 0B
Build Cache 0 0 0B 0Bืืื ืืจืึทืืื ืืืื ื ืืึทืืขืจืืง ืืึทืจื ืืื ืฉืืื ืืืึทื ืืขืจืื ื ืืื ืืื ืืืขืจ test.img ืืขืงืข ืืื ืืืื. ืืืืืจ ืขืก ืืืื:
$ find /var/lib/docker -type f -name test.img
/var/lib/docker/overlay2/83f177...630078/merged/test.img
/var/lib/docker/overlay2/83f177...630078/diff/test.imgืึธื ืืืื ืืื ืืขืืึทืืืก, ืืืจ ืงืขื ืขื ืืึธื ืึทื ืื test.img ืืขืงืข ืืื ืงืึทื ืืืื ืืึทื ืืื ืืืื ืืืืฃ ืื ืืืืขื ืขื-ืฉืจืืึทืื ืืืจืื, ืงืึทื ืืจืึธืืื ืืืจื ืื ืึธืืืืขืจืืื2 ืฉืึธืคืขืจ. ืืืื ืืืจ ืืึทืืื ืืื ืืืขืจ ืงืึทื ืืืื ืขืจ, ืืขืจ ืืึทืืขืืึธืก ืืืขื ืืึธืื ืืื ืื ืึทื ืืขื ืคึผืืึทืฅ ืงืขื ืขื, ืืื ืคึผืจืื ืฆืืคึผ, ืืืื ืคืจืื:
# Stopping the www container
$ docker stop www
# Visualizing the impact on the disk usage
$ docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 1 1 126M 0B (0%)
Containers 1 0 104.9MB 104.9MB (100%)
Local Volumes 0 0 0B 0B
Build Cache 0 0 0B 0Bืืื ืงืขื ืขื ืืืจ ืืึธื ืืึธืก? ืืืจื ืืืืืืื ื ืืขื ืงืึทื ืืืื ืขืจ, ืืืึธืก ืืืขื ืึทืจืืึทื ืฆืืขื ืงืืึธืจ ืื ืงืึธืจืึทืกืคึผืึทื ืืื ื ืคึผืืึทืฅ ืืื ืื ืืืืขื ืขื-ืฉืจืืึทืื ืืืจืื.
ืืื ืื ืคืืืืขื ืืข ืืึทืคึฟืขื, ืืืจ ืงืขื ืขื ืึทืจืึธืคึผื ืขืืขื ืึทืืข ืืื ืกืืึทืืืจื ืงืึทื ืืืื ืขืจื ืืื ืืืื ืกืืืืคึผ ืืื ืืืกืืขืงื ืืืื ืืืกืง ืคืื ืึทืืข ืืืืขื ืขื-ืฉืจืืึทืื ืืขืงืขืก ืืืฉืืคื ืืืจื ืืื:
$ docker container prune
WARNING! This will remove all stopped containers.
Are you sure you want to continue? [y/N] y
Deleted Containers:
5e7f8e5097ace9ef5518ebf0c6fc2062ff024efb495f11ccc89df21ec9b4dcc2
Total reclaimed space: 104.9MBืึทืืื, ืืืจ ืืืคืจืืื 104,9 ืืขืืืืืื ืืืจื ืืืืืืื ื ืืขื ืงืึทื ืืืื ืขืจ. ืึธืืขืจ ืืื ื ืืืจ ื ืื ืืขืจ ื ืืฆื ืื ืคืจืืขืจ ืืึทืื ืืึธืืืื ืืืื, ืขืก ืืืื ืืืขืจื ืึท ืงืึทื ืืืืึทื ืคึฟืึทืจ ืืืืืืื ื ืืื ืคืจืื ืืื ืืืขืจ ืจืขืกืืจืกื:
$ docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 1 0 126M 126M (100%)
Containers 0 0 0B 0B
Local Volumes 0 0 0B 0B
Build Cache 0 0 0B 0Bืืึทืืขืจืงืื ื: ืืื ืืึทื ื ืืื ืื ืืืื ืืื ืืื ื ืืฆื ืืืจื ืืืึท ืืื ืืกืืขืจ ืืืื ืงืึทื ืืืื ืขืจ, ืืืจ ืืืขื ื ืืฉื ืงืขื ืขื ืฆื ื ืืฆื ืืขื ืืจืืง.
ืื ืคึผืจืื ืข ืกืึทืืงืึทืืึทื ื ืืืจ ืืขืืืืื ื ืืืืื ืืื ืืืืื ืึท ืืืืจืงืื ื ืืืืฃ ืคืืจืฉืืืคื ืงืึทื ืืืื ืขืจื. ืืืื ืืืจ ืืืืื ืฆื ืืืกืืขืงื ื ืื ืืืืื ืกืืึทืคึผื ืึธืืขืจ ืืืื ืคืืืกื ืืืง ืงืึทื ืืืื ืขืจื, ืืืจ ืืึธื ื ืืฆื ืืืื ืขืจ ืคืื ืื ืงืึทืืึทื ืื:
# Historical command
$ docker rm -f $(docker ps โaq)
# More recent command
$ docker container rm -f $(docker container ls -aq)ืืืึทื ืืขืจืืช: ืืืื ืืืจ ื ืืฆื ืื -rm ืคึผืึทืจืึทืืขืืขืจ ืืืขื ืืืจ ืึธื ืืืื ืึท ืงืึทื ืืืื ืขืจ, ืืืขื ืขืก ืกืืึทืคึผืก, ืึทืืข ืื ืืืกืง ืคึผืืึทืฅ ืืืึธืก ืขืก ืคืึทืจื ืืืขื ืืืขื ืืืื ืคืจืื.
ื ืืฆื ืืืกืง ืืืืืขืจ
ืืื ืขืืืขืืข ืืึธืจ ืฆืืจืืง, ืึท ืืืื ืืจืืืก ืคืื ืขืืืขืืข ืืื ืืขืจื ืืขืืืืืื ืืื ืืขืืืขื ืืึธืจ ื ืึธืจืืึทื: ืึท ืืืื ืื ืืืื ืืืืื 600 ืืขืืืืืื, ืืื ืึท ืืืงืจืึธืกืึธืคื .ื ืขื ืืืื ืืืขืื ืขืืืขืืข ืืืืืืืื. ืืื ืืขื ืข ืฆืขืฉืืืืขืจื ืืขื, ืืึทืื ืืึธืืืื ื ืืืืื ืืืื ืืืื ืงืขื ื ืขืืขื ืึท ืืจืืืก ืึธืคึผืฆืึธื ืืืืฃ ืืืื ืคืจืื ืืืกืง ืคึผืืึทืฅ, ืืคืืื ืืืื ืืืจ ืืืืื ืืขืืืขืืก ืฆืืืืฉื ืืืืืขืจ. ืืืึทื ื - ืืืื ืฆื ืื ืืจืืืก - ืืืืืขืจ ืืืขืื ืคืื ืืืืื ืืงืขืจ, ืึธืืขืจ ืืคืืื ืึทืืื, ืืืจ ืงืขื ืขื ืืขืฉืืืื ื ืคึผืืึธืืืืจื ืื ืื ืืืฆื ืจืขืกืืจืกื ืืืื ืืืจ ืืึธื ื ืื ื ืขืืขื ืขืืืขืืข ืคึผืจืืงืึธืฉืึทื ื.
ืขืก ืืขื ืขื ืขืืืขืืข ืืืืคึผืก ืคืื ืืืืืขืจ ืืืึธืก ืืขื ืขื ื ืืฉื ืงืขื ืืืง ืืืืึทื ืฆื ืืขืจ ืกืืฃ ืืึทื ืืฆืขืจ:
- ืื ืืขืจืืืืืื ืืืืืขืจ, ืืืืฃ ืืขืจ ืืืืข ืคืื โโืืืึธืก ืื ืืขืจืข ืืืืืขืจ ืืขื ืขื ืืขืืืืื - ืืื ืงืขื ืขื ื ืื ืืืื ืืืืกืืขืืขืงื ืืืื ืืืจ ื ืืฆื ืงืึทื ืืืื ืขืจื ืืืืืจื ืืืืฃ ืื "ืื ืืขืจืข" ืืืืืขืจ;
- ืืึทื ืืืื ื ืืืืืขืจ ืืขื ืขื ืื ืืขืจืืืืืื ืืืืืขืจ ืืืึธืก ืืขื ืขื ื ืืฉื ืจืขืคืขืจืจืขื ืืืจื ืงืืื ืคืื ืื ืคืืืกื ืืืง ืงืึทื ืืืื ืขืจื - ืืื ืงืขื ืขื ืืืื ืืืืกืืขืืขืงื.
- ืืื ืื ืคืืืืขื ืืข ืืึทืคึฟืขื ืืืจ ืงืขื ืขื ืงืึธื ืืจืึธืืืจื ืคึฟืึทืจ ืืึทื ืืืื ื ืืืืืขืจ ืืืืฃ ืืืื ืกืืกืืขื:
$ docker image ls -f dangling=true
REPOSITORY TAG IMAGE ID CREATED SIZE
none none 21e658fe5351 12 minutes ago 71.3MBืืืจ ืงืขื ืขื ืึทืจืึธืคึผื ืขืืขื ืืื ืืื ืื ืคืืืืขื ืืข ืืืขื:
$ docker image rm $(docker image ls -f dangling=true -q)ืืืจ ืงืขื ืขื ืืืื ื ืืฆื ืื ืคึผืจืื ืข ืกืึทืืงืึทืืึทื ื:
$ docker image prune
WARNING! This will remove all dangling images.
Are you sure you want to continue? [y/N] y
Deleted Images:
deleted: sha256:143407a3cb7efa6e95761b8cd6cea25e3f41455be6d5e7cda
deleted: sha256:738010bda9dd34896bac9bbc77b2d60addd7738ad1a95e5cc
deleted: sha256:fa4f0194a1eb829523ecf3bad04b4a7bdce089c8361e2c347
deleted: sha256:c5041938bcb46f78bf2f2a7f0a0df0eea74c4555097cc9197
deleted: sha256:5945bb6e12888cf320828e0fd00728947104da82e3eb4452f
Total reclaimed space: 12.9kBืืืื ืืืจ ืคึผืืืฆืืื ื ืืืืื ืฆื ืืืกืืขืงื ืึทืืข ืืืืืขืจ ืืขืกืึทืืึทืงื (ืืื ื ืื ื ืึธืจ ืืึทื ืืืื ื) ืืื ืืืื ืืึทืคึฟืขื, ืืืจ ืงืขื ืขื ืืึธื ืืึธืก:
$ docker image rm $(docker image ls -q)ืืืกืง ืืึทื ืืฅ ืืืื ืืืึทืืืืื
ืืืึทืืืืื ืืขื ืขื ืืขื ืืฆื ืฆื ืงืจืึธื ืืึทืื ืึทืจืืืก ืื ืืขืงืข ืกืืกืืขื ืคืื ืืขื ืงืึทื ืืืื ืขืจ. ืคึฟืึทืจ ืืืึทืฉืคึผืื, ืืืื ืืืจ ืืืืื ืฆื ืจืึทืืขืืืขื ืื ืจืขืืืืืึทืื ืคืื ืึท ืึทืคึผืืึทืงืืืฉืึทื ืฆื ื ืืฆื ืืื ืืื ืขืืืขืืข ืื ืืขืจืข ืืืขื. ื ืคึผืจืึธืกื ืืืึทืฉืคึผืื ืืื ืืึทืืึทืืืืกืื.
ืืึธืืืจ ืงืึทืืขืจ ืึท MongoDB ืงืึทื ืืืื ืขืจ, ืึธื ืงืืึทืคึผื ืึท ืืึทื ื ืคืื ืืจืืืกื ืืืง ืฆื ืืขื ืงืึทื ืืืื ืขืจ, ืืื ืืืงืขืจื ืึท ืืึทืืึทืืืืก ืืึทืงืึทืคึผ ืคึฟืื ืขืก (ืืืจ ืืึธืื ืขืก ืื ืืืฆื ืืื ืื bck.json ืืขืงืข):
# Running a mongo container
$ docker run --name db -v $PWD:/tmp -p 27017:27017 -d mongo:4.0
# Importing an existing backup (from a huge bck.json file)
$ docker exec -ti db mongoimport
--db 'test'
--collection 'demo'
--file /tmp/bck.json
--jsonArrayืื ืืึทืื ืืืขื ืืืื ืืืื ืืืืฃ ืืขืจ ืืึทืืขืืึธืก ืืึทืฉืื ืืื ืื /var/lib/docker/volums ืืืขืืืืืึทืืขืจ. ืึธืืขืจ ืคืืจืืืืก ื ืืฉื ืืื ืื ืืืืขื ืขื-ืฉืจืืึทืื ืืืจืื ืคืื ืืขื ืงืึทื ืืืื ืขืจ? ืืืืึทื ืืื ืื Dockerfile ืคืื ืื MongoDB ืืืื, ืื /data/db ืืืขืืืืืึทืืขืจ (ืืื MongoDB ืกืืึธืจื ืืืึทื ืืึทืื ืืืจื ืคืขืืืงืืึทื) ืืื ืืืคืืื ื ืืื ืึท ืืึทื ื.
ืืืึทื ืืึธื: ืคืืืข ืืืืืขืจ ืืืึธืก ืืืื ืคึผืจืึธืืืฆืืจื ืืึทืื ื ืืฆื ืืืึทืืืืื ืฆื ืงืจืึธื ืื ืืึทืื.
ืืืขื ืืืจ ืฉืคึผืืื ืืขื ืื ืืื MongoDB ืืื ืืึทืืื (ืึธืืขืจ ืืคึฟืฉืจ ืืคืืื ืืืกืืขืงื) ืืขื ืงืึทื ืืืื ืขืจ, ืืขืจ ืืึทื ื ืืืขื ื ืืฉื ืืืื ืืืืกืืขืืขืงื. ืขืก ืืืขื ืคืึธืจืืขืฆื ืฆื ื ืขืืขื ืืื ืืืขืจ ืืืึทืขืจ ืืืกืง ืคึผืืึทืฅ ืืื ืืืจ ืืืกืืขืงื ืขืก ืืคืืจืืฉ ืืื ืึท ืืึทืคึฟืขื ืืื ืืึธืก:
$ docker volume rm $(docker volume ls -q)ื ื, ืึธืืขืจ ืืืจ ืงืขื ืขื ื ืืฆื ืื ืคึผืจืื ืข ืกืึทืืงืึทืืึทื ื ืืืึธืก ืืื ืฉืืื ืืึทืงืึทื ื ืฆื ืืื ืื:
$ docker volume prune
WARNING! This will remove all local volumes not used by at least one container.
Are you sure you want to continue? [y/N] y
Deleted Volumes:
d50b6402eb75d09ec17a5f57df4ed7b520c448429f70725fc5707334e5ded4d5
8f7a16e1cf117cdfddb6a38d1f4f02b18d21a485b49037e2670753fa34d115fc
599c3dd48d529b2e105eec38537cd16dac1ae6f899a123e2a62ffac6168b2f5f
...
732e610e435c24f6acae827cd340a60ce4132387cfc512452994bc0728dd66df
9a3f39cc8bd0f9ce54dea3421193f752bda4b8846841b6d36f8ee24358a85bae
045a9b534259ec6c0318cb162b7b4fca75b553d4e86fc93faafd0e7c77c79799
c6283fe9f8d2ca105d30ecaad31868410e809aba0909b3e60d68a26e92a094da
Total reclaimed space: 25.82GB
luc@saturn:~$ื ืืฆื ืืืกืง ืคึฟืึทืจ ืืืื ืืืืขื ืงืึทืฉ
ืืื Docker 18.09, ืื ืืืื ืฉืึทืคืื ื ืคึผืจืึธืฆืขืก ืืื ืึทื ืืขืจืืึธื ืขืืืขืืข ืขื ืืขืจืื ืืขื ืืึทื ืง ืฆื ืื BuildKit ืืขืฆืืึทื. ืื ืืึทื ืื ืงืจืืกืื ืื ืืืืงืืึทื ืคืื ืืขื ืคึผืจืึธืฆืขืก ืืื ืึธืคึผืืืืืืขืก ืืึทืื ืกืืึธืจืืืืฉ ืืื ืืืืขืจืืืื ืคืึทืจืืืึทืืืื ื. ืืึธ ืืืจ ืืืขืื ื ืืฉื ืืึทืืจืึทืืื ืึทืืข ืื ืืขืืึทืืืก ืคืื ืืขื ืืืื ืืขืจืืขื ืืขืฆืืึทื; ืืืจ ืืืขืื ืืืืื ืคืึธืงืืก ืืืืฃ ืืื ืขืก ืืืขื ืื ืืฉืื ืคืื ืืืกืง ืคึผืืึทืฅ ื ืืฆื.
ืืื ืก ืืึธืื ืืืจ ืืึธืื ืึท ืืึธืจ ืคึผืฉืื Node.Js ืึทืคึผืืึทืงืืืฉืึทื:
- ืื index.js ืืขืงืข ืกืืึทืจืฅ ืึท ืคึผืฉืื ืืืืคึผ ืกืขืจืืืขืจ ืืืึธืก ืจืืกืคึผืึทื ืื ืืื ืึท ืฉืืจื ืฆื ืืขืืขืจ ืืขืื ืืืงืืืขื:
- ืื package.json ืืขืงืข ืืืคืืื ื ืื ืืืคึผืขื ืืึทื ืกืื, ืคืื ืืืึธืก ืืืืื ืขืงืกืคึผืจืขืกืกืืืฉืก ืืื ืืขื ืืฆื ืฆื ืืืืคื ืื ืืืืคึผ ืกืขืจืืืขืจ:
$ cat index.js
var express = require('express');
var util = require('util');
var app = express();
app.get('/', function(req, res) {
res.setHeader('Content-Type', 'text/plain');
res.end(util.format("%s - %s", new Date(), 'Got Request'));
});
app.listen(process.env.PORT || 80);$ cat package.json
{
"name": "testnode",
"version": "0.0.1",
"main": "index.js",
"scripts": {
"start": "node index.js"
},
"dependencies": {
"express": "^4.14.0"
}
}ืื Dockerfile ืคึฟืึทืจ ืื ืื ืื ืืืื ืงืืงื ืืื ืืึธืก:
FROM node:13-alpine
COPY package.json /app/package.json
RUN cd /app && npm install
COPY . /app/
WORKDIR /app
EXPOSE 80
CMD ["npm", "start"]ืืึธืืืจ ืืืืขื ืื ืืืื ืืืืฃ ืื ืืขืืืืื ืืืขื ืืืขื ืึธื ื ืืฆื BuildKit:
$ docker build -t app:1.0 .ืืืื ืืืจ ืงืึธื ืืจืึธืืืจื ืื ื ืืฆื ืคืื ืืืกืง ืคึผืืึทืฅ, ืืืจ ืงืขื ืขื ืืขื ืึทื ืืืืื ืื ืืึทืืข ืืืื (ื ืึธืืข: 13-ืึทืืคึผืืื) ืืื ืื ืฆืื ืืืื (ืึทืคึผ: 1.0) ื ืขืืขื ืคึผืืึทืฅ:
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 2 0 109.3MB 109.3MB (100%)
Containers 0 0 0B 0B
Local Volumes 0 0 0B 0B
Build Cache 0 0 0B 0Bืืึธืืืจ ืืืืขื ืื ืจืืข ืืืขืจืกืืข ืคืื โโืืื ืืืขืจ ืึทืคึผืืึทืงืืืฉืึทื, ื ืืฆื BuildKit. ืฆื ืืึธื ืืึธืก, ืืืจ ื ืึธืจ ืืึทืจืคึฟื ืฆื ืฉืืขืื ืื DOCKER_BUILDKIT ืืืึทืืขืืืืืง ืฆื 1:
$ DOCKER_BUILDKIT=1 docker build -t app:2.0 .ืืืื ืืืจ ืืืฆื ืงืึธื ืืจืึธืืืจื ืื ืืืกืง ืืึทื ืืฅ, ืืืจ ืืืขืื ืืขื ืึทื ืื ืืืืขื ืงืึทืฉ (buid-cache) ืืื ืืืฆื ืื ืืืึทืืืื ืืึธืจื:
$ docker system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 2 0 109.3MB 109.3MB (100%)
Containers 0 0 0B 0B
Local Volumes 0 0 0B 0B
Build Cache 11 0 8.949kB 8.949kBืฆื ืืืกืืขืงื ืขืก, ื ืืฆื ืื ืคืืืืขื ืืข ืืึทืคึฟืขื:
$ docker builder prune
WARNING! This will remove all dangling build cache.
Are you sure you want to continue? [y/N] y
Deleted build cache objects:
rffq7b06h9t09xe584rn4f91e
ztexgsz949ci8mx8p5tzgdzhe
3z9jeoqbbmj3eftltawvkiayi
Total reclaimed space: 8.949kBืืขืง ืืืืก ืืืข!
ืึทืืื, ืืืจ ืืขืงืืงื ืืืืฃ ืจืืื ืืงืื ื ืืืกืง ืคึผืืึทืฅ ืคืึทืจื ืืืขื ืืืจื ืงืึทื ืืืื ืขืจื, ืืืืืขืจ ืืื ืืืึทืืืืื. ืื ืคึผืจืื ืข ืกืึทืืงืึทืืึทื ื ืืขืืคื ืืื ืื ืืื ืืขื. ืึธืืขืจ ืขืก ืงืขื ืขื ืืืื ืืืื ืืขืืืืื ื ืืืืฃ ืื ืืึธืงืงืขืจ ืกืืกืืขื ืืืจืื, ืืื ืขืก ืืืขื ืจืืื ืืงื ืึทืืฅ ืขืก ืงืขื ืขื:
$ docker system prune
WARNING! This will remove:
- all stopped containers
- all networks not used by at least one container
- all dangling images
- all dangling build cache
Are you sure you want to continue? [y/N]ืืืื ืคึฟืึทืจ ืขืืืขืืข ืกืืื ืืืจ ืฉืคึผืึธืจื ืืืกืง ืคึผืืึทืฅ ืืืืฃ ืึท ืืึทืฉืื ืืื ืืึธืงืงืขืจ, ืคึผืืจืืึทืืืงืื ืืืืคื ืืขื ืืึทืคึฟืขื ืืึธื ืืืขืจื ืึท ืืืืข.
ืืงืืจ: www.habr.com