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author | Florian Klink <flokli@flokli.de> | 2020-11-17 21:54:26 +0100 |
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committer | Florian Klink <flokli@flokli.de> | 2020-11-19 16:56:46 +0100 |
commit | d22b3ed4bcd24dcc96fd9f99c75bb568bffe2a8c (patch) | |
tree | 4019622d6149592c7c771ff05996b84386ce12ea /nixos/modules/system/boot/systemd.nix | |
parent | e949d758998fafbef608adcf9f54d79a6e7da4c8 (diff) | |
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systemd: switch to unified cgroup hierarchy by default
See https://www.redhat.com/sysadmin/fedora-31-control-group-v2 for details on why this is desirable, and how it impacts containers. Users that need to keep using the old cgroup hierarchy can re-enable it by setting `systemd.unifiedCgroupHierarchy` to `false`. Well-known candidates not supporting that hierarchy, like docker and hidepid=… will disable it automatically. Fixes #73800
Diffstat (limited to 'nixos/modules/system/boot/systemd.nix')
-rw-r--r-- | nixos/modules/system/boot/systemd.nix | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/nixos/modules/system/boot/systemd.nix b/nixos/modules/system/boot/systemd.nix index c22264b3e92..cbf9e7b49d3 100644 --- a/nixos/modules/system/boot/systemd.nix +++ b/nixos/modules/system/boot/systemd.nix @@ -550,6 +550,14 @@ in ''; }; + systemd.enableUnifiedCgroupHierarchy = mkOption { + default = true; + type = types.bool; + description = '' + Whether to enable the unified cgroup hierarchy (cgroupsv2). + ''; + }; + systemd.coredump.enable = mkOption { default = true; type = types.bool; @@ -1178,6 +1186,7 @@ in boot.kernel.sysctl = mkIf (!cfg.coredump.enable) { "kernel.core_pattern" = "core"; }; + boot.kernelParams = optional (!cfg.enableUnifiedCgroupHierarchy) "systemd.unified_cgroup_hierarchy=0"; }; # FIXME: Remove these eventually. |