Docker: Difference between revisions
Add a section for using nvidia with docker containers |
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To install Docker on NixOS, add the virtualization.docker module to your system configuration at <code>/etc/nixos/configuration.nix</code>:<ref>https://nixos.org/manual/nixos/stable/options#opt-virtualisation.docker.enable</ref> | To install Docker on NixOS, add the virtualization.docker module to your system configuration at <code>/etc/nixos/configuration.nix</code>:<ref>https://nixos.org/manual/nixos/stable/options#opt-virtualisation.docker.enable</ref> | ||
(Note that it may take a restart for the group changes to take effect.) | |||
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<syntaxhighlight lang="nix"> | <syntaxhighlight lang="nix"> | ||
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== Configuration == <!--T:9--> | == Configuration == <!--T:9--> | ||
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=== Using Privileged Ports for Rootless Docker === | === Using Privileged Ports for Rootless Docker === | ||
Rootless containers are not able to ports from 0 to 1023 as such port can only be used by privileged users. This problem can be solved by using port forwarding. | Rootless containers are not able to bind ports from 0 to 1023 as such port can only be used by privileged users. This problem can be solved by using port forwarding. | ||
Assume you'd like a rootless container to make use of ports 53 (DNS; TPC and UDP) and 80 (web; TCP). We may force the container to use port 8000 while the firewall is instructed for forward traffic from port 80 to 8000. Same logic applies for port 53. Refer to the following example:<syntaxhighlight lang="nixos"># Firewall | Assume you'd like a rootless container to make use of ports 53 (DNS; TPC and UDP) and 80 (web; TCP). We may force the container to use port 8000 while the firewall is instructed for forward traffic from port 80 to 8000. Same logic applies for port 53. Refer to the following example:<syntaxhighlight lang="nixos"># Firewall | ||
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allowedTCPPorts = [ 80 8000 53 5300 ]; | allowedTCPPorts = [ 80 8000 53 5300 ]; | ||
allowedUDPPorts = [ 53 5300 ]; | allowedUDPPorts = [ 53 5300 ]; | ||
extraCommands = '' | |||
iptables -A PREROUTING -t nat -i eth0 -p TCP --dport 80 -j REDIRECT --to-port 8000 | |||
iptables -A PREROUTING -t nat -i eth0 -p TCP --dport 53 -j REDIRECT --to-port 5300 | |||
iptables -A PREROUTING -t nat -i eth0 -p UDP --dport 53 -j REDIRECT --to-port 5300 | |||
''; | |||
}; | }; | ||
boot.kernel.sysctl = { | boot.kernel.sysctl = { | ||
"net.ipv4.conf.eth0.forwarding" = 1; # enable port forwarding | "net.ipv4.conf.eth0.forwarding" = 1; # enable port forwarding | ||
};</syntaxhighlight>Whilst the docker-compose.yaml might look like this:<syntaxhighlight lang="dockerfile"> | };</syntaxhighlight>Whilst the docker-compose.yaml might look like this:<syntaxhighlight lang="dockerfile"> | ||
services: | services: | ||
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An alternative, if using [[flakes]], is to do <code>created = builtins. | An alternative, if using [[flakes]], is to do <code>created = "@" + builtins.toString self.lastModified</code>, which uses the commit date, and is therefore reproducible. | ||
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==== Calculating the sha256 for a pulled Docker image ==== <!--T:49--> | ==== Calculating the sha256 for a pulled Docker image ==== <!--T:49--> | ||
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{{File|3={ | {{File|3={ | ||
virtualisation.docker.enable = true; | # virtualisation.docker.enable = true; # This option is deprecated, please set hardware.nvidia-container-toolkit.enable instead. | ||
hardware.nvidia-container-toolkit.enable = true; | hardware.nvidia-container-toolkit.enable = true; | ||
# Prevents: - Option enableNvidia on x86_64 requires 32-bit support libraries | |||
# Regular Docker | # Regular Docker | ||
virtualisation.docker.daemon.settings.features.cdi = true; | virtualisation.docker.daemon.settings.features.cdi = true; | ||
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capabilities: [gpu] | capabilities: [gpu] | ||
device_ids: | device_ids: | ||
- nvidia.com/gpu=all|name=compose.yml|lang=yaml}} | - nvidia.com/gpu=all | ||
volumes: | |||
ollama: {}|name=compose.yml|lang=yaml}} | |||
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<references/> | <references/> | ||
== See also == | |||
*[https://nixcademy.com/posts/auto-update-containers/ Run and Auto-Update Docker Containers on NixOS, Nixcademy] | |||
[[Category:Applications]] | [[Category:Applications]] | ||