我是Rancher和容器的新手。使用Rancher设置Kubernetes集群时，我在访问Kubernetes仪表板时遇到问题。
rancher/server: 1.6.6
Single node Rancher server + External MySQL + 3 agent nodes
Infrastructure Stack versions:
healthcheck: v0.3.1
ipsec: net:v0.11.5
network-services: metadata:v0.9.2 / network-manager:v0.7.7
scheduler: k8s:v1.7.2-rancher5
kubernetes (if applicable): kubernetes-agent:v0.6.3
# docker info
Containers: 1
Running: 1
Paused: 0
Stopped: 0
Images: 1
Server Version: 17.03.1-ce
Storage Driver: overlay
Backing Filesystem: extfs
Supports d_type: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 4ab9917febca54791c5f071a9d1f404867857fcc
runc version: 54296cf40ad8143b62dbcaa1d90e520a2136ddfe
init version: 949e6fa
Security Options:
seccomp
Profile: default
Kernel Version: 4.9.34-rancher
Operating System: RancherOS v1.0.3
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 7.798 GiB
Name: ch7radod1
ID: IUNS:4WT2:Y3TV:2RI4:FZQO:4HYD:YSNN:6DPT:HMQ6:S2SI:OPGH:TX4Y
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Http Proxy: http://proxy.ch.abc.net:8080
Https Proxy: http://proxy.ch.abc.net:8080
No Proxy: localhost,.xyz.net,abc.net
Registry: https://index.docker.io/v1/
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
访问UI网址http://10.216.30.10/r/projects/1a6633/kubernetes-dashboard:9090/#显示“服务不可用”
如果我使用UI中的CLI部分，我会得到以下内容：
> kubectl get nodes
NAME STATUS AGE VERSION
ch7radod3 Ready 1d v1.7.2
ch7radod4 Ready 5d v1.7.2
ch7radod1 Ready 1d v1.7.2
> kubectl get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system heapster-4285517626-4njc2 0/1 ContainerCreating 0 5d
kube-system kube-dns-3942128195-ft56n 0/3 ContainerCreating 0 19d
kube-system kube-dns-646531078-z5lzs 0/3 ContainerCreating 0 5d
kube-system kubernetes-dashboard-716739405-lpj38 0/1 ContainerCreating 0 5d
kube-system monitoring-grafana-3552275057-qn0zf 0/1 ContainerCreating 0 5d
kube-system monitoring-influxdb-4110454889-79pvk 0/1 ContainerCreating 0 5d
kube-system tiller-deploy-737598192-f9gcl 0/1 ContainerCreating 0 5d
安装程序使用私有注册表（Artifactory）。我检查了Artifactory，我可以看到几个与Docker相关的图像。我正在浏览private registry部分，我还看到this文件。如果需要这个文件，我究竟在哪里保留它以便Rancher可以获取它并配置Kubernetes仪表板？
更新：
$ sudo ros engine switch docker-1.12.6
> ERRO[0031] Failed to load https://raw.githubusercontent.com/rancher/os-services/v1.0.3/index.yml: Get https://raw.githubusercontent.com/rancher/os-services/v1.0.3/index.yml: Proxy Authentication Required
> FATA[0031] docker-1.12.6 is not a valid engine
我想可能是因为NGINX所以我停止了NGINX容器，但我仍然遇到上述错误。早些时候我在这个Rancher服务器上尝试了相同的命令，它曾经工作正常。它在代理节点上工作正常，尽管它们已经配置了1.12.6。
更新2：
> kubectl -n kube-system get po
NAME READY STATUS RESTARTS AGE
heapster-4285517626-4njc2 1/1 Running 0 12d
kube-dns-2588877561-26993 0/3 ImagePullBackOff 0 5h
kube-dns-646531078-z5lzs 0/3 ContainerCreating 0 12d
kubernetes-dashboard-716739405-zq3s9 0/1 CrashLoopBackOff 67 5h
monitoring-grafana-3552275057-qn0zf 1/1 Running 0 12d
monitoring-influxdb-4110454889-79pvk 1/1 Running 0 12d
tiller-deploy-737598192-f9gcl 0/1 CrashLoopBackOff 72 12d
答案 0 :(得分：0)
您的播客都没有运行，您需要先解决该问题。尝试重新启动整个群集，并查看所有上述pod处于运行状态。
答案 1 :(得分：0)
基于@ ivan.sim的suggestion，我发布了'UPDATE 2'。这让我终于朝着正确的方向前进。然后我开始在线查找CrashLoopBackOff错误并遇到this链接并尝试了以下命令（使用Rancher控制台的CLI选项），这实际上与上面提到的@ ivan.sim非常相似但是这个帮助我使用仪表板进程运行的节点：
> kubectl get pods -a -o wide --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE
kube-system heapster-4285517626-4njc2 1/1 Running 0 12d 10.42.224.157 radod4
kube-system kube-dns-2588877561-26993 0/3 ImagePullBackOff 0 5h <none> radod1
kube-system kube-dns-646531078-z5lzs 0/3 ContainerCreating 0 12d <none> radod4
kube-system kubernetes-dashboard-716739405-zq3s9 0/1 Error 70 5h 10.42.218.11 radod1
kube-system monitoring-grafana-3552275057-qn0zf 1/1 Running 0 12d 10.42.202.44 radod4
kube-system monitoring-influxdb-4110454889-79pvk 1/1 Running 0 12d 10.42.111.171 radod4
kube-system tiller-deploy-737598192-f9gcl 0/1 CrashLoopBackOff 76 12d 10.42.213.24 radod4
然后我去了进程正在执行的主机并尝试了以下命令：
[rancher@radod1 ~]$
[rancher@radod1 ~]$ docker ps -a | grep dash
282334b0ed38 gcr.io/google_containers/kubernetes-dashboard-amd64@sha256:b537ce8988510607e95b8d40ac9824523b1f9029e6f9f90e9fccc663c355cf5d "/dashboard --insecur" About a minute ago Exited (1) 55 seconds ago k8s_kubernetes-dashboard_kubernetes-dashboard-716739405-zq3s9_kube-system_7b0afda7-8271-11e7-ae86-021bfe69c163_72
99836d7824fd gcr.io/google_containers/pause-amd64:3.0 "/pause" 5 hours ago Up 5 hours k8s_POD_kubernetes-dashboard-716739405-zq3s9_kube-system_7b0afda7-8271-11e7-ae86-021bfe69c163_1
[rancher@radod1 ~]$
[rancher@radod1 ~]$
[rancher@radod1 ~]$ docker logs 282334b0ed38
Using HTTP port: 8443
Creating API server client for https://10.43.0.1:443
Error while initializing connection to Kubernetes apiserver. This most likely means that the cluster is misconfigured (e.g., it has invalid apiserver certificates or service accounts configuration) or the --apiserver-host param points to a server that does not exist. Reason: the server has asked for the client to provide credentials
Refer to the troubleshooting guide for more information: https://github.com/kubernetes/dashboard/blob/master/docs/user-guide/troubleshooting.md
在我收到上述错误后，我再次在网上搜索并尝试了一些事情。最后，this链接有所帮助。在所有代理节点上执行以下命令后，Kubernetes仪表板终于开始工作了！
docker volume rm etcd
rm -rf /var/etcd/backups/*