diff --git a/test/840_weave_kube_3_test.sh b/test/840_weave_kube_3_test.sh
index d67ab196..c490fdcf 100755
--- a/test/840_weave_kube_3_test.sh
+++ b/test/840_weave_kube_3_test.sh
@@ -37,7 +37,7 @@ k8s_version="$(run_on $HOST1 "kubelet --version" | grep -oP "(?<=Kubernetes )v[\
 
 for host in $HOSTS; do
     if [ $host = $HOST1 ] ; then
-	run_on $host "sudo systemctl start kubelet && sudo kubeadm init --kubernetes-version=$k8s_version --token=$TOKEN --pod-network-cidr=$WEAVE_NETWORK"
+	run_on $host "sudo systemctl start kubelet && sudo kubeadm init --ignore-preflight-errors=NumCPU --kubernetes-version=$k8s_version --token=$TOKEN --pod-network-cidr=$WEAVE_NETWORK"
     else
 	run_on $host "sudo systemctl start kubelet && sudo kubeadm join --token=$TOKEN --discovery-token-unsafe-skip-ca-verification $HOST1IP:$KUBE_PORT"
     fi
diff --git a/test/860_weave_kube_portmap_3_test.sh b/test/860_weave_kube_portmap_3_test.sh
index 1d936013..99d50d6d 100755
--- a/test/860_weave_kube_portmap_3_test.sh
+++ b/test/860_weave_kube_portmap_3_test.sh
@@ -41,7 +41,7 @@ function setup_kubernetes_cluster {
 
     for host in $HOSTS; do
         if [ $host = $HOST1 ] ; then
-        run_on $host "sudo systemctl start kubelet && sudo kubeadm init --kubernetes-version=$k8s_version --token=$TOKEN"
+        run_on $host "sudo systemctl start kubelet && sudo kubeadm init --ignore-preflight-errors=NumCPU --kubernetes-version=$k8s_version --token=$TOKEN"
         else
         run_on $host "sudo systemctl start kubelet && sudo kubeadm join --token=$TOKEN --discovery-token-unsafe-skip-ca-verification $HOST1IP:$KUBE_PORT"
         fi
diff --git a/test/870_weave_recovers_unreachable_ips_on_relaunch_3_test.sh b/test/870_weave_recovers_unreachable_ips_on_relaunch_3_test.sh
index ea967251..75afb97f 100755
--- a/test/870_weave_recovers_unreachable_ips_on_relaunch_3_test.sh
+++ b/test/870_weave_recovers_unreachable_ips_on_relaunch_3_test.sh
@@ -41,7 +41,7 @@ function setup_kubernetes_cluster {
 
     for host in $HOSTS; do
         if [ $host = $HOST1 ] ; then
-        run_on $host "sudo systemctl start kubelet && sudo kubeadm init --kubernetes-version=$k8s_version --token=$TOKEN"
+        run_on $host "sudo systemctl start kubelet && sudo kubeadm init --ignore-preflight-errors=NumCPU --kubernetes-version=$k8s_version --token=$TOKEN"
         else
         run_on $host "sudo systemctl start kubelet && sudo kubeadm join --token=$TOKEN --discovery-token-unsafe-skip-ca-verification $HOST1IP:$KUBE_PORT"
         fi