如何将kubelet作为docker容器运行

Question

我可以将kubelet作为基于kubernetes v1.6.6的docker容器运行吗？如果可以，如何创建镜像或从哪里获取镜像，以及如何运行此镜像？

以下是我的操作，但有一些问题。

Dockerfile FROM i71:5000/ubuntu:14.04 ADD iptables /usr/local/bin/iptables ADD bin/kubelet /usr/local/bin/kubelet

docker运行sh #!/bin/bash docker rm -f $(docker ps -aq --filter "name=kubelet") docker run \ -d \ --restart="always" \ --net="host" \ -v /data/kubernetes-cluster/ssl:/data/kubernetes-cluster/ssl \ -v /data/kubernetes-cluster/kube-conf:/data/kubernetes-cluster/kube-conf \ -v /data/kubernetes-cluster/log:/data/kubernetes-cluster/log \ -v /data/kubelet:/var/lib/kubelet \ -v /etc/localtime:/etc/localtime \ -v /var/run/:/var/run/ \ -v /var/log/:/var/log/ \ --privileged=true \ --name kubelet \ i71:5000/kubelet:v1.6.6 \ /usr/local/bin/kubelet \ --logtostderr=true \ --v=0 \ --cgroup-driver=cgroupfs \ --api-servers=http://192.168.0.97:8080 \ --docker-endpoint=http://127.0.0.1:4243 \ --address=192.168.0.97 \ --hostname-override=192.168.0.97 \ --allow-privileged=true \ --pod-infra-container-image=i71:5000/pod-infrastructure:rhel7 \ --cluster-dns=10.3.0.2 \ --experimental-bootstrap-kubeconfig=/data/kubernetes-cluster/kube-conf/bootstrap.kubeconfig \ --kubeconfig=/data/kubernetes-cluster/kube-conf/kubelet.kubeconfig \ --require-kubeconfig \ --cert-dir=/data/kubernetes-cluster/ssl \ --cluster-domain=cluster.local. \ --hairpin-mode=promiscuous-bridge \ --serialize-image-pulls=false

kubelet打印这些错误(我的docker damon pid是5140)：E0706 12:11:46.061949 1 container_manager_linux.go:394] open /proc/5140/cgroup: no such file or directory E0706 12:11:46.137217 1 container_manager_linux.go:97] Unable to ensure the docker processes run in the desired containers E0706 12:16:46.062290 1 container_manager_linux.go:394] open /proc/5140/cgroup: no such file or directory E0706 12:16:46.138189 1 container_manager_linux.go:97] Unable to ensure the docker processes run in the desired containers

如果我执行卷主机目录'/proc'，docker damon会出错。docker: Error response from daemon: oci runtime error: container_linux.go:247: starting container process caused "process_linux.go:359: container init caused \"rootfs_linux.go:54: mounting\\\"/proc\\\" to rootfs \\\"/data/docker/local-storage/docker/aufs/mnt/6ad53fff3b30e8d709b1be326f5de1314371e174e34806d4d6c6436275b6fbd3\\\" at \\\"/proc\\\" caused \\\"\\\\\\\"/data/docker/local-storage/docker/aufs/mnt/6ad53fff3b30e8d709b1be326f5de1314371e174e34806d4d6c6436275b6fbd3/proc\\\\\\\" cannot be mounted because it is located inside \\\\\\\"/proc\\\\\\\"\\\"\"".

我该怎么做，有没有人能给我一盏灯？

Answer 1

有一个名为hyperkube的官方docker镜像，其中包含所有Kubernetes二进制文件，请参阅https://kubernetes.io/docs/getting-started-guides/scratch/#selecting-images

您可以在这里找到一个关于如何将其用于kubelet的示例systemd服务：https://github.com/kubernetes/kubernetes-anywhere/blob/master/phase2/ignition/vanilla/kubelet.service