Merge pull request #128818 from NixOS/backport-128546-to-release-21.05

[Backport release-21.05] kubernetes: make tests pass by fixing a conntrack-tools dep and a missing dir

nixos/modules/services/cluster/kubernetes/pki.nix

@@ -189,6 +189,7 @@ in
         # manually paste it in place. Just symlink.
         # otherwise, create the target file, ready for users to insert the token
 
+        mkdir -p $(dirname ${certmgrAPITokenPath})
         if [ -f "${cfsslAPITokenPath}" ]; then
           ln -fs "${cfsslAPITokenPath}" "${certmgrAPITokenPath}"
         else

nixos/modules/services/cluster/kubernetes/proxy.nix

@@ -59,7 +59,7 @@ in
       description = "Kubernetes Proxy Service";
       wantedBy = [ "kubernetes.target" ];
       after = [ "kube-apiserver.service" ];
-      path = with pkgs; [ iptables conntrack_tools ];
+      path = with pkgs; [ iptables conntrack-tools ];
       serviceConfig = {
         Slice = "kubernetes.slice";
         ExecStart = ''${top.package}/bin/kube-proxy \

nixos/tests/kubernetes/base.nix

@@ -40,7 +40,7 @@ let
                   allowedTCPPorts = [
                     10250 # kubelet
                   ];
-                  trustedInterfaces = ["docker0"];
+                  trustedInterfaces = ["mynet"];
 
                   extraCommands = concatMapStrings  (node: ''
                     iptables -A INPUT -s ${node.config.networking.primaryIPAddress} -j ACCEPT
@@ -61,6 +61,13 @@ let
                   advertiseAddress = master.ip;
                 };
                 masterAddress = "${masterName}.${config.networking.domain}";
+                # workaround for:
+                #   https://github.com/kubernetes/kubernetes/issues/102676
+                #   (workaround from) https://github.com/kubernetes/kubernetes/issues/95488
+                kubelet.extraOpts = ''\
+                  --cgroups-per-qos=false \
+                  --enforce-node-allocatable="" \
+                '';
               };
             }
             (optionalAttrs (any (role: role == "master") machine.roles) {