# k8s环境搭建问题总结
========================

## 1.K8S 报 ErrImagePull k8s.gcr.io国内无法连接解决方法

.. code::

    k8s.gcr.io连接不上之后，会报如下的错误：

    [ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-apiserver:v1.12.2: output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    , error: exit status 1
    [ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-controller-manager:v1.12.2: output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    , error: exit status 1
    [ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-scheduler:v1.12.2: output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    , error: exit status 1
    [ERROR ImagePull]: failed to pull image k8s.gcr.io/kube-proxy:v1.12.2: output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    , error: exit status 1
    [ERROR ImagePull]: failed to pull image k8s.gcr.io/pause:3.1: output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    , error: exit status 1
    [ERROR ImagePull]: failed to pull image k8s.gcr.io/etcd:3.2.24: output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    , error: exit status 1
    [ERROR ImagePull]: failed to pull image k8s.gcr.io/coredns:1.2.2: output: Error response from daemon: Get https://k8s.gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    , error: exit status 1

解决方式：  
通过docker.io下载，然后改tag标签：

这里的版本号请跟自己的版本号对应

下载：

.. code::

    docker pull mirrorgooglecontainers/kube-apiserver-amd64:v1.12.2
    docker pull mirrorgooglecontainers/kube-controller-amd64:v1.12.2
    docker pull mirrorgooglecontainers/kube-controller-manager-amd64:v1.12.2
    docker pull mirrorgooglecontainers/kube-scheduler-amd64:v1.12.2
    docker pull mirrorgooglecontainers/kube-proxy-amd64:v1.12.2
    docker pull mirrorgooglecontainers/pause:3.1
    docker pull mirrorgooglecontainers/etcd-amd64:3.2.24
    docker pull mirrorgooglecontainers/coredns:1.2.2
    docker pull mirrorgooglecontainers/coredns-amd64:1.2.2
    docker pull coredns/coredns:1.2.2

.. code::

    docker tag mirrorgooglecontainers/kube-proxy-amd64:v1.12.2 k8s.gcr.io/kube-proxy:v1.12.2
    docker tag mirrorgooglecontainers/kube-apiserver-amd64:v1.12.2 k8s.gcr.io/kube-apiserver:v1.12.2
    docker tag mirrorgooglecontainers/kube-controller-manager-amd64:v1.12.2 k8s.gcr.io/kube-controller-manager:v1.12.2
    docker tag mirrorgooglecontainers/kube-scheduler-amd64:v1.12.2 k8s.gcr.io/kube-scheduler:v1.12.2
    docker tag mirrorgooglecontainers/etcd-amd64:3.2.24 k8s.gcr.io/etcd:3.2.24
    docker tag coredns/coredns:1.2.2 k8s.gcr.io/coredns:1.2.2
    docker tag mirrorgooglecontainers/pause:3.1 k8s.gcr.io/pause:3.1

ImagePullBackOff 一般都是因为镜像拉不下来，很大可能是因为镜像被墙。可以试试修改 xxxx.yaml 中指定的  镜像，找一个国内或者 dockerhub 上面的同个版本的镜像试试。

这个办法看起来比较简单,也已试着找一下国内的k8s镜像源。。。

## 2.master节点作为node节点加入集群

参考资料：  
https://www.cnblogs.com/tchua/p/10844013.html