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nixos/containers: Add assertion for container name length #51393

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merged 1 commit into from Dec 5, 2018

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arianvp commented Dec 2, 2018

Fixes #38509

Motivation for this change

When privateNetwork is enabled, currently the container's interface name
is derived from the container name. However, there's a hard limit
on the size of interface names. To avoid conflicts and other issues,
we set a limit on the container name when privateNetwork is enabled.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Assured whether relevant documentation is up to date
  • Fits CONTRIBUTING.md.

nixos/containers: Add assertion for container name length
When privateNetwork is enabled, currently the container's interface name
is derived from the container name. However, there's a hard limit
on the size of interface names. To avoid conflicts and other issues,
we set a limit on the container name when privateNetwork is enabled.

Fixes #38509
@Mic92

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Mic92 commented Dec 2, 2018

@GrahamcOfBorg build nixosTests.containers-bridge

@flokli flokli merged commit 0834e98 into NixOS:master Dec 5, 2018

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grahamcofborg-eval ^.^!
Details
grahamcofborg-eval-check-meta config.nix: checkMeta = true
Details
grahamcofborg-eval-nixos-manual nix-instantiate --arg nixpkgs { outPath=./.; revCount=999999; shortRev="ofborg"; } ./nixos/release.nix -A manual
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grahamcofborg-eval-nixos-options nix-instantiate --arg nixpkgs { outPath=./.; revCount=999999; shortRev="ofborg"; } ./nixos/release.nix -A options
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grahamcofborg-eval-nixpkgs-manual nix-instantiate --arg nixpkgs { outPath=./.; revCount=999999; shortRev="ofborg"; } ./pkgs/top-level/release.nix -A manual
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grahamcofborg-eval-nixpkgs-tarball nix-instantiate --arg nixpkgs { outPath=./.; revCount=999999; shortRev="ofborg"; } ./pkgs/top-level/release.nix -A tarball
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grahamcofborg-eval-nixpkgs-unstable-jobset nix-instantiate --arg nixpkgs { outPath=./.; revCount=999999; shortRev="ofborg"; } ./pkgs/top-level/release.nix -A unstable
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grahamcofborg-eval-package-list nix-env -qa --json --file .
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grahamcofborg-eval-package-list-no-aliases nix-env -qa --json --file . --arg config { allowAliases = false; }
Details
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flokli commented Dec 5, 2018

@arianvp do you want to backport this to 18.09 as well?

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