kubenetes无法创建pod/创建RC时无法自动创建pod的问题

一、问题概述

问题1:
虽然每次通过yaml创建rc都显示成功了,但是
kubectl get pod却没显示任何的pod.

问题2:
直接通过yaml创建pod提示apixxx

问题3:
通过.json文件创建pod
未验证

二、方法一:跳过认证

创建pod:

# kubectl create -f nginx.yaml
此时有如下报错:

Error from server: error when creating "nginx.yaml": Pod "nginx" is forbidden: no API token found for service account default/default, retry after the token is automatically created and added to the service account
解决办法是编辑/etc/kubernetes/apiserver 去除 KUBE_ADMISSION_CONTROL中的SecurityContextDeny,ServiceAccount,并重启kube-apiserver.service服务:

#vim /etc/kubernetes/apiserver
KUBE_ADMISSION_CONTROL="--admission_control=NamespaceLifecycle,NamespaceExists,LimitRanger,ResourceQuota"

#systemctl restart kube-apiserver.service
之后重新创建pod:

# kubectl create -f nginx.yaml
pods/nginx

三、方法二:解决认证

出处: 
http://stackoverflow.com/questions/34464779/pod-mysql-is-forbidden-no-api-token-found-for-service-account-default-default

To get your setup working, you can do the same thing local-up-cluster.sh is doing:

Generate a signing key: 
openssl genrsa -out /tmp/serviceaccount.key 2048

Update /etc/kubernetes/apiserver: 
KUBE_API_ARGS=”–service_account_key_file=/tmp/serviceaccount.key”

Update /etc/kubernetes/controller-manager: 
KUBE_CONTROLLER_MANAGER_ARGS=”–service_account_private_key_file=/tmp/serviceaccount.key”

From https://github.com/kubernetes/kubernetes/issues/11355#issuecomment-127378691

完了之后可以看到pod了,但是发现是挂起状态,pending,于是查了下发现是因为无法从gcr.io拉取pause0.8.0的镜像。那么很简单 就找个可用的镜像拉取即可。
docker pull docker.io/kubernetes/pause

即可

posted @ 2018-08-02 21:13  云原生运维社区  阅读(741)  评论(0编辑  收藏  举报