CentOS 7.3利用kubeadm安装Kubernetes 1.7.3完整版(2)

[root@centos7-base-ok]# docker version
Client:
 Version:      1.12.6
 API version:  1.24
 Go version:  go1.6.4
 Git commit:  78d1802
 Built:        Tue Jan 10 20:20:01 2017
 OS/Arch:      linux/amd64

Server:
 Version:      1.12.6
 API version:  1.24
 Go version:  go1.6.4
 Git commit:  78d1802
 Built:        Tue Jan 10 20:20:01 2017
 OS/Arch:      linux/amd64

5.设置开机启动，启动容器，docker安装完成

[root@centos7-base-ok]# systemctl enbale docker && systemctl start docker

安装kubectl、kubelet、kubeadm(根据需求在不同节点安装) 注意：此步骤是填坑的开始，因为官方文档的yum源在国内无法使用，安装完成后注意观察你的/var/log/message日志，会疯狂报错，别着急，跟着我一步一步来填坑。

1.新建kubernetes.repo文件，将文件移动到/etc/yum.repos.d/目录下(所有节点)

[root@centos7-base-ok]# cat /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0

2.通过yum安装kubectl、kubelet、kubeadm(所有节点)

[root@centos7-base-ok]# cat /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0

3.修改kubelet配置，启动kubelet(所有节点)

注意：时刻查看/var/log/message的日志输出，会看到kubelet一直启动失败。

编辑10-kubeadm.conf的文件，修改cgroup-driver配置：

[root@centos7-base-ok]# cat /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--kubeconfig=/etc/kubernetes/kubelet.conf --require-kubeconfig=true"
Environment="KUBELET_SYSTEM_PODS_ARGS=--pod-manifest-path=/etc/kubernetes/manifests --allow-privileged=true"
Environment="KUBELET_NETWORK_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
Environment="KUBELET_DNS_ARGS=--cluster-dns=10.96.0.10 --cluster-domain=cluster.local"
Environment="KUBELET_AUTHZ_ARGS=--authorization-mode=Webhook --client-ca-file=/etc/kubernetes/pki/ca.crt"
Environment="KUBELET_CADVISOR_ARGS=--cadvisor-port=0"
Environment="KUBELET_CGROUP_ARGS=--cgroup-driver=cgroupfs"
ExecStart=
ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_SYSTEM_PODS_ARGS $KUBELET_NETWORK_ARGS $KUBELET_DNS_ARGS $KUBELET_AUTHZ_ARGS $KUBELET_CADVISOR_ARGS $KUBELET_CGROUP_ARGS $KUBELET_EXTRA_ARGS

将“--cgroup-driver=systems”修改成为“--cgroup-driver=cgroupfs”，重新启动kubelet。

[root@centos7-base-ok]# systemctl restart kubelet

4.下载安装k8s依赖镜像