Failed to reserve QoS requests: failed to set supported cgroup
subsystems for cgroup [kubepods burstable]: Failed to find subsystem
mount for required subsystem: pids
问题描述： k8s主节点和子节点均显示Ready,但是系统日志却有相关报错，详情信息如下：
[root@k8s-master ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION k8s-master Ready master 77m v1.14.0 k8s-node1.novalocal Ready <none> 56m v1.14.0 k8s-node2.novalocal Ready <none> 46m v1.14.0 [root@k8s-master ~]# journalctl -f Sep 10 17:41:22 k8s-master kubelet[6392]: W0910 17:41:22.901307 6392 qos_container_manager_linux.go:139] [ContainerManager] Failed to reserve QoS requests: failed to set supported cgroup subsystems for cgroup [kubepods burstable]: Failed to find subsystem mount for required subsystem: pids解决方案： 在ExecStart上添加 --feature-gates SupportPodPidsLimit=false --feature-gates SupportNodePidsLimit=false
[root@k8s-master ~]# vim /usr/lib/systemd/system/kubelet.service.d/10-kubeadm.conf # Note: This dropin only works with kubeadm and kubelet v1.11+ [Service] Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf" Environment="KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml" # This is a file that "kubeadm init" and "kubeadm join" generates at runtime, populating the KUBELET_KUBEADM_ARGS variable dynamically EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env # This is a file that the user can use for overrides of the kubelet args as a last resort. Preferably, the user should use # the .NodeRegistration.KubeletExtraArgs object in the configuration files instead. KUBELET_EXTRA_ARGS should be sourced from this file. EnvironmentFile=-/etc/sysconfig/kubelet ExecStart= ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS --feature-gates SupportPodPidsLimit=false --feature-gates SupportNodePidsLimit=false[root@k8s-master ~]# reboot其他节点均执行以上操作
来源：51CTO
作者：架势糖007
链接：https://blog.csdn.net/qq_38900565/article/details/100707025