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the-distro:main
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the-distro:hexy/credentials
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the-distro:ckie/moarr-v4
the-distro:gerrit-metrics
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the-distro:unplug-epyc
the-distro:hydra-wire-up
the-distro:alertmanager
the-distro:fodwatch
the-distro:cadvisor-containers
the-distro:gerrit-http-clones
the-distro:meta01

2 commits
64079be3c0 ... 7d9461808c

Author SHA1 Message Date
Pierre Bourdon 7d9461808c
builders: configure a swapfile + zswap 2024-07-13 04:40:51 +02:00
Pierre Bourdon 293bc52ace
hydra: reduce number of parallel builds per builder to limit RAM consumption 2024-07-13 04:38:24 +02:00
2 changed files with 15 additions and 3 deletions
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12
services/baremetal-builder/default.nix
View file

@ -51,6 +51,18 @@ in
options = [ "fmask=0022" "dmask=0022" ];
};
swapDevices = [
{
device = "/swapfile";
size = 50 * 1024; # 50GiB
}
];
zramSwap = {
enable = true;
memoryPercent = 25;
};
boot.kernelParams = [
"console=ttyS0,115200"
"console=tty1"

6
services/hydra/default.nix
View file

@ -13,15 +13,15 @@ let
# XXX: to support Nix's dumb public host key syntax (base64'd), this outputs
# a string with shell-style command interpolations: $(...).
mkBaremetalBuilder = { nrCores, publicHostKey, host, speedFactor ? 1, user ? "builder", supportedSystems ? [ "i686-linux" "x86_64-linux" ], supportedFeatures ? [ "big-parallel" "kvm" "nixos-test" ] }:
"ssh://${user}@${host} ${lib.concatStringsSep "," supportedSystems} ${config.age.secrets.hydra-ssh-key-priv.path} ${toString nrCores} ${toString speedFactor} ${lib.concatStringsSep "," supportedFeatures} - $(echo -n '${publicHostKey}' | base64 -w0)";
mkBaremetalBuilder = { parallelBuilds, publicHostKey, host, speedFactor ? 1, user ? "builder", supportedSystems ? [ "i686-linux" "x86_64-linux" ], supportedFeatures ? [ "big-parallel" "kvm" "nixos-test" ] }:
"ssh://${user}@${host} ${lib.concatStringsSep "," supportedSystems} ${config.age.secrets.hydra-ssh-key-priv.path} ${toString parallelBuilds} ${toString speedFactor} ${lib.concatStringsSep "," supportedFeatures} - $(echo -n '${publicHostKey}' | base64 -w0)";
# TODO:
# - generalize to new architectures
# - generalize to new features
baremetalBuilders = lib.concatStringsSep "\n"
(map (n: mkBaremetalBuilder {
nrCores = 40; # TODO: do not hardcode this, use the node's builder configuration.
parallelBuilds = 8; # TODO: do not hardcode this, use the node's builder configuration.
publicHostKey = ssh-keys.machines.${n};
host = nodes.${n}.config.networking.fqdn;
}) cfg.builders);