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nixos: nixos/doc/manual/administration/network-problems.xml to CommonMark

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Bobby Rong 2021-07-02 10:49:14 +08:00
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21
nixos/doc/manual/administration/network-problems.section.md Normal file
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# Network Problems {#sec-nix-network-issues}
Nix uses a so-called *binary cache* to optimise building a package from
source into downloading it as a pre-built binary. That is, whenever a
command like `nixos-rebuild` needs a path in the Nix store, Nix will try
to download that path from the Internet rather than build it from
source. The default binary cache is `https://cache.nixos.org/`. If this
cache is unreachable, Nix operations may take a long time due to HTTP
connection timeouts. You can disable the use of the binary cache by
adding `--option use-binary-caches false`, e.g.
```ShellSession
# nixos-rebuild switch --option use-binary-caches false
```
If you have an alternative binary cache at your disposal, you can use it
instead:
```ShellSession
# nixos-rebuild switch --option binary-caches http://my-cache.example.org/
```

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nixos/doc/manual/administration/network-problems.xml
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<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
xml:id="sec-nix-network-issues">
<title>Network Problems</title>
<para>
Nix uses a so-called <emphasis>binary cache</emphasis> to optimise building a
package from source into downloading it as a pre-built binary. That is,
whenever a command like <command>nixos-rebuild</command> needs a path in the
Nix store, Nix will try to download that path from the Internet rather than
build it from source. The default binary cache is
<uri>https://cache.nixos.org/</uri>. If this cache is unreachable, Nix
operations may take a long time due to HTTP connection timeouts. You can
disable the use of the binary cache by adding <option>--option
use-binary-caches false</option>, e.g.
<screen>
<prompt># </prompt>nixos-rebuild switch --option use-binary-caches false
</screen>
If you have an alternative binary cache at your disposal, you can use it
instead:
<screen>
<prompt># </prompt>nixos-rebuild switch --option binary-caches <replaceable>http://my-cache.example.org/</replaceable>
</screen>
</para>
</section>

2
nixos/doc/manual/administration/troubleshooting.xml
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<xi:include href="../from_md/administration/maintenance-mode.section.xml" />
<xi:include href="../from_md/administration/rollback.section.xml" />
<xi:include href="../from_md/administration/store-corruption.section.xml" />
<xi:include href="network-problems.xml" />
<xi:include href="../from_md/administration/network-problems.section.xml" />
</chapter>

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nixos/doc/manual/from_md/administration/network-problems.section.xml Normal file
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<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-nix-network-issues">
<title>Network Problems</title>
<para>
Nix uses a so-called <emphasis>binary cache</emphasis> to optimise
building a package from source into downloading it as a pre-built
binary. That is, whenever a command like
<literal>nixos-rebuild</literal> needs a path in the Nix store, Nix
will try to download that path from the Internet rather than build
it from source. The default binary cache is
<literal>https://cache.nixos.org/</literal>. If this cache is
unreachable, Nix operations may take a long time due to HTTP
connection timeouts. You can disable the use of the binary cache by
adding <literal>--option use-binary-caches false</literal>, e.g.
</para>
<programlisting>
# nixos-rebuild switch --option use-binary-caches false
</programlisting>
<para>
If you have an alternative binary cache at your disposal, you can
use it instead:
</para>
<programlisting>
# nixos-rebuild switch --option binary-caches http://my-cache.example.org/
</programlisting>
</section>