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Lars Quentin
Lars Quentin

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Hack: Forcing Puppet to apt update

#puppet

Short hack: As seen in m a n y Dockerfiles, the apt cache is located at /var/lib/apt/lists.

Therefore, we can use it's existence to create an idempotent exec-Ressouce!

exec { 'apt update': # Only if the update files dont exist unless => '[ "$(ls -A /var/lib/apt/lists)" ]', # /bin is needed for bash # /usr/bin is needed for [ path => '/bin:/usr/bin', }
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Now whenever you need to have the apt cache first, just do something like

package { 'your-package': ensure => 'present', require => Exec['apt update'] }
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Easy as 🥧

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