Add --config to instruct kubelet to use internal config file #5329

Kubelet startup parameters does not include the --config flag. This flag pass the
location of the configuration file. During minikube startup process this file
is copied over to the VM. Fix test cases.

Author: nanikjava

pkg/minikube/bootstrapper/kubeadm/kubeadm_test.go

@@ -48,7 +48,7 @@ Wants=docker.socket
 
 [Service]
 ExecStart=
-ExecStart=/var/lib/minikube/binaries/v1.11.10/kubelet --allow-privileged=true --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cadvisor-port=0 --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --container-runtime=docker --fail-swap-on=false --hostname-override=minikube --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-manifest-path=/etc/kubernetes/manifests
+ExecStart=/var/lib/minikube/binaries/v1.11.10/kubelet --allow-privileged=true --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cadvisor-port=0 --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --config=/var/lib/kubelet/config.yaml --container-runtime=docker --fail-swap-on=false --hostname-override=minikube --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-manifest-path=/etc/kubernetes/manifests
 
 [Install]
 `,
@@ -66,7 +66,7 @@ Wants=crio.service
 
 [Service]
 ExecStart=
-ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --container-runtime=remote --container-runtime-endpoint=/var/run/crio/crio.sock --fail-swap-on=false --hostname-override=minikube --image-service-endpoint=/var/run/crio/crio.sock --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-manifest-path=/etc/kubernetes/manifests --runtime-request-timeout=15m
+ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --config=/var/lib/kubelet/config.yaml --container-runtime=remote --container-runtime-endpoint=/var/run/crio/crio.sock --fail-swap-on=false --hostname-override=minikube --image-service-endpoint=/var/run/crio/crio.sock --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-manifest-path=/etc/kubernetes/manifests --runtime-request-timeout=15m
 
 [Install]
 `,
@@ -84,7 +84,7 @@ Wants=containerd.service
 
 [Service]
 ExecStart=
-ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --container-runtime=remote --container-runtime-endpoint=unix:///run/containerd/containerd.sock --fail-swap-on=false --hostname-override=minikube --image-service-endpoint=unix:///run/containerd/containerd.sock --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-manifest-path=/etc/kubernetes/manifests --runtime-request-timeout=15m
+ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --config=/var/lib/kubelet/config.yaml --container-runtime=remote --container-runtime-endpoint=unix:///run/containerd/containerd.sock --fail-swap-on=false --hostname-override=minikube --image-service-endpoint=unix:///run/containerd/containerd.sock --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-manifest-path=/etc/kubernetes/manifests --runtime-request-timeout=15m
 
 [Install]
 `,
@@ -109,7 +109,7 @@ Wants=containerd.service
 
 [Service]
 ExecStart=
-ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --container-runtime=remote --container-runtime-endpoint=unix:///run/containerd/containerd.sock --fail-swap-on=false --hostname-override=minikube --image-service-endpoint=unix:///run/containerd/containerd.sock --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.200 --pod-manifest-path=/etc/kubernetes/manifests --runtime-request-timeout=15m
+ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --config=/var/lib/kubelet/config.yaml --container-runtime=remote --container-runtime-endpoint=unix:///run/containerd/containerd.sock --fail-swap-on=false --hostname-override=minikube --image-service-endpoint=unix:///run/containerd/containerd.sock --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.200 --pod-manifest-path=/etc/kubernetes/manifests --runtime-request-timeout=15m
 
 [Install]
 `,
@@ -128,7 +128,7 @@ Wants=docker.socket
 
 [Service]
 ExecStart=
-ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --container-runtime=docker --fail-swap-on=false --hostname-override=minikube --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-infra-container-image=docker-proxy-image.io/google_containers/pause:3.1 --pod-manifest-path=/etc/kubernetes/manifests
+ExecStart=/var/lib/minikube/binaries/v1.16.1/kubelet --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --config=/var/lib/kubelet/config.yaml --container-runtime=docker --fail-swap-on=false --hostname-override=minikube --kubeconfig=/etc/kubernetes/kubelet.conf --node-ip=192.168.1.100 --pod-infra-container-image=docker-proxy-image.io/google_containers/pause:3.1 --pod-manifest-path=/etc/kubernetes/manifests
 
 [Install]
 `,

pkg/minikube/bootstrapper/kubeadm/versions.go

@@ -217,6 +217,10 @@ var versionSpecificOpts = []config.VersionedExtraOption{
 		LessThanOrEqual: semver.MustParse("1.15.0-alpha.3"),
 	},
 
+
+	// Kubelet config file
+	config.NewUnversionedOption(Kubelet, "config", "/var/lib/kubelet/config.yaml"),
+
 	// Network args
 	config.NewUnversionedOption(Kubelet, "cluster-dns", "10.96.0.10"),
 	config.NewUnversionedOption(Kubelet, "cluster-domain", "cluster.local"),