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Deckschrubber inspects images of a Docker Registry and removes those older than a given age. 🔆🚢

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Deckschrubber

n. person responsible for scrubbing a ship's deck.

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Deckschrubber inspects images of a Docker Registry and removes those older than a given age.

Quick Start

go get github.com/fraunhoferfokus/deckschrubber
$GOPATH/bin/deckschrubber

Why this?

We run our own private registry on a server with limited storage and it was only a question of time, until it was full! Although there are similar approaches to do Docker registry house keeping (in Python, Ruby, etc), a native module (using Docker's own packages) was missing. This module has the following advantages:

  • Is binary!: No runtime, Python, Ruby, etc. is required
  • Uses Docker API: same packages and modules used to relaze Docker registry are used here

Arguments

-day int
      max age in days
-debug
      run in debug mode      
-dry
      does not actually deletes
-latest int
      number of the latest matching images of an repository that won't be deleted (default 1)      
-month int
      max age in months
-registry string
      URL of registry (default "http://localhost:5000")
-repo string
      matching repositories (allows regexp) (default ".*")      
-repos int
      number of repositories to garbage collect (default 5)
-tag string
      matching tags (allows regexp) (default ".*")      
-v    shows version and quits
-year int
      max age in days
      
      

Examples

  • Remove all images older than 2 months and 2 days
$GOPATH/bin/deckschrubber -month 2 -day 2
  • Remove all images older than 1 year from http://myrepo:5000
$GOPATH/bin/deckschrubber -year 1 -registry http://myrepo:5000
  • Analyize (but do not remove) images of 30 repositories
$GOPATH/bin/deckschrubber -repos 30 -dry
  • Remove all images of each repository except the 3 latest ones
$GOPATH/bin/deckschrubber -latest 3 
  • Remove all images with tags that ends with '-SNAPSHOT'
$GOPATH/bin/deckschrubber -tag ^.*-SNAPSHOT$ 

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Deckschrubber inspects images of a Docker Registry and removes those older than a given age. 🔆🚢

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