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feat(hosts,lib): adjust kernel sysctl for k8s/dae

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Ryan Yin
2024-03-29 23:45:30 +08:00
parent 6ae98566ed
commit e85712ca53
3 changed files with 33 additions and 20 deletions
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21
lib/genKubeVirtCoreModule.nix
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@@ -23,6 +23,27 @@ in {
boot.kernelModules = ["kvm-amd" "vfio-pci"];
boot.extraModprobeConfig = "options kvm_amd nested=1"; # for amd cpu
boot.kernel.sysctl = {
# --- filesystem --- #
# increase the limits to avoid running out of inotify watches
"fs.inotify.max_user_watches" = 524288;
"fs.inotify.max_user_instances" = 1024;
# --- network --- #
"net.bridge.bridge-nf-call-iptables" = 1;
"net.core.somaxconn" = 32768;
"net.ipv4.ip_forward" = 1;
"net.ipv4.conf.all.forwarding" = 1;
"net.ipv4.neigh.default.gc_thresh1" = 4096;
"net.ipv4.neigh.default.gc_thresh2" = 6144;
"net.ipv4.neigh.default.gc_thresh3" = 8192;
"net.ipv4.neigh.default.gc_interval" = 60;
"net.ipv4.neigh.default.gc_stale_time" = 120;
# --- memory --- #
"vm.swappiness" = 0; # don't swap unless absolutely necessary
};
environment.systemPackages = with pkgs; [
# Validate Hardware Virtualization Support via:
# virt-host-validate qemu