kubelet失败，使用kubelet cgroup驱动程序：“cgroupfs”不同于docker cgroup驱动程序：“systemd”

Question

cgroup驱动程序的配置在/etc/systemd/system/kubelet.service.d/10-kubeadm.conf中正确

Environment="KUBELET_CGROUP_ARGS=--cgroup-driver=systemd"

我还使用cli检查了环境

$ systemctl show --property=Environment kubelet | cat
Environment=KUBELET_KUBECONFIG_ARGS=--kubeconfig=/etc/kubernetes/kubelet.conf\x20--require-kubeconfig=true KUBELET_SYSTEM_PODS_ARGS=--pod-manifest-path=/etc/kubernetes/manifests\x20--allow-privileged=true KUBELET_NETWORK_ARGS=--network-plugin=cni\x20--cni-conf-dir=/etc/cni/net.d\x20--cni-bin-dir=/opt/cni/bin KUBELET_DNS_ARGS=--cluster-dns=10.96.0.10\x20--cluster-domain=cluster.local KUBELET_AUTHZ_ARGS=--authorization-mode=Webhook\x20--client-ca-file=/etc/kubernetes/pki/ca.crt KUBELET_CADVISOR_ARGS=--cadvisor-port=0 KUBELET_CGROUP_ARGS=--cgroup-driver=systemd

kubelet_cgroup_args=--cgroup-driver=systemd

null

• Kubernetes版本（使用Kubectl版本):1.7.3
• 云提供商或硬件配置**:4核16G RAM
• 操作系统（例如来自/etc/os-release):CentOS Linux 7（核心）
• 内核（例如uname-a):Linux 10-8-108-92 3.10.0-327.22.2.el7.x86_64#1 SMP Thu Jun 23 17:05:11 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
• 安装工具:Kubeadm

Answer 1

kubelet 1.7.3未读取配置文件/etc/systemd/system/kubelet.service.d/10-kubeadm.conf#50748

kubeadm故障排除

如果您正在使用CentOS并在设置主节点时遇到困难，请验证您的Docker cgroup驱动程序是否与kubelet配置相匹配：

docker info | grep -i cgroup
cat /etc/systemd/system/kubelet.service.d/10-kubeadm.conf

sed -i "s/cgroup-driver=systemd/cgroup-driver=cgroupfs/g /etc/systemd/system/kubelet.service.d/10-kubeadm.conf

CG=$(sudo docker info 2>/dev/null | sed -n 's/Cgroup Driver: \(.*\)/\1/p')
sed -i "s/cgroup-driver=systemd/cgroup-driver=$CG/g" /etc/systemd/system/kubelet.service.d/10-kubeadm.conf