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https://github.com/ryan4yin/nix-config.git
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32 lines
1.3 KiB
Nix
32 lines
1.3 KiB
Nix
{
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# enable the node exporter on all nixos hosts
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# https://github.com/NixOS/nixpkgs/blob/nixos-25.05/nixos/modules/services/monitoring/prometheus/exporters/node.nix
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services.prometheus.exporters.node = {
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enable = true;
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listenAddress = "0.0.0.0";
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port = 9100;
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# There're already a lot of collectors enabled by default
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# https://github.com/prometheus/node_exporter?tab=readme-ov-file#enabled-by-default
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enabledCollectors = [
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"systemd"
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"logind"
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];
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# use either enabledCollectors or disabledCollectors
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# disabledCollectors = [];
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extraFlags = [
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# Exclude pseudo/ephemeral FS:
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# - /proc, /sys: kernel pseudo-FS, always size 0
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# - /dev: tmpfs/devices, not meaningful for disk usage
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# Exclude container/runtime mounts:
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# - /var/lib/docker/, /var/lib/containers/ and /var/lib/kubelet/ → too much overlay/tmpfs mounts,
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# often EACCES (strict perms, namespaces) → false alerts
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# Exclude user bind mounts:
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# - /home/ryan/.+ → bind-mounted from /persistent (NixOS tmpfs-root setup),
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# monitoring /persistent is sufficient
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"--collector.filesystem.mount-points-exclude=^/(dev|proc|sys|var/lib/docker/.+|var/lib/containers/.+|var/lib/kubelet/.+|home/ryan/.+)($|/)"
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];
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};
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}
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