Question

我能够成功配置K8S群集。但后来我想允许对kub apiserver进行annolymous访问，所以我将以下参数添加到/kube-apiserver.yaml

for col in data['Jan']:
 data[('Jan', col)] = data[('Jan',col)] * data[('Cost','Cost')]

但是当我重新启动服务时，它无法成功启动apiserver。所以我恢复原来的配置，但是当我启动服务时，我得到以下错误。我得到各种各样的错误，我认为主要原因是kubelet无法启动Api服务器。

- --insecure-bind-address=0.0.0.0
- --insecure-port=8080

我怎样才能克服这个问题，有没有办法清理所有东西并将其作为新鲜事物开始。我假设一些元数据仍然令人难以忘怀。

修改

来自/ var / log / pods的完整日志

    �~W~O kubelet.service
   Loaded: loaded (/etc/systemd/system/kubelet.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2017-05-14 01:57:40 UTC; 1min 16s ago
  Process: 4055 ExecStartPre=/usr/bin/rkt rm --uuid-file=/var/run/kubelet-pod.uuid (code=exited, status=0/SUCCESS)
  Process: 4050 ExecStartPre=/usr/bin/mkdir -p /var/log/containers (code=exited, status=0/SUCCESS)
  Process: 4045 ExecStartPre=/usr/bin/mkdir -p /etc/kubernetes/manifests (code=exited, status=0/SUCCESS)
 Main PID: 4082 (kubelet)
    Tasks: 15 (limit: 32768)
   Memory: 55.0M
      CPU: 7.876s
   CGroup: /system.slice/kubelet.service
           �~T~\�~T~@4082 /kubelet --api-servers=http://127.0.0.1:8080 --register-schedulable=false --cni-conf-dir=/etc/kubernetes/cni/net.d --network-plugin= --container-runtime=docker --allow-privileged=true --pod-manifest-path=/etc/kubernetes/manifests --hostname-override=192.168.57.12 --cluster_dns=10.3.0.10 --cluster_domain=cluster.local
           �~T~T�~T~@4126 journalctl -k -f

May 14 01:58:42 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: E0514 01:58:42.403056    4082 kubelet_node_status.go:101] Unable to register node "192.168.57.12" with API server: Post http://127.0.0.1:8080/api/v1/nodes: dial tcp 127.0.0.1:8080: getsockopt: connection refused
May 14 01:58:46 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: E0514 01:58:46.565119    4082 eviction_manager.go:214] eviction manager: unexpected err: failed GetNode: node '192.168.57.12' not found
May 14 01:58:49 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: I0514 01:58:49.403315    4082 kubelet_node_status.go:230] Setting node annotation to enable volume controller attach/detach
May 14 01:58:49 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: I0514 01:58:49.406572    4082 kubelet_node_status.go:77] Attempting to register node 192.168.57.12
May 14 01:58:49 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: E0514 01:58:49.467143    4082 kubelet_node_status.go:101] Unable to register node "192.168.57.12" with API server: rpc error: code = 13 desc = transport is closing
May 14 01:58:53 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: I0514 01:58:53.717328    4082 kubelet_node_status.go:230] Setting node annotation to enable volume controller attach/detach
May 14 01:58:56 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: I0514 01:58:56.467325    4082 kubelet_node_status.go:230] Setting node annotation to enable volume controller attach/detach
May 14 01:58:56 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: I0514 01:58:56.469607    4082 kubelet_node_status.go:77] Attempting to register node 192.168.57.12
May 14 01:58:56 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: E0514 01:58:56.540698    4082 kubelet_node_status.go:101] Unable to register node "192.168.57.12" with API server: rpc error: code = 13 desc = transport is closing
May 14 01:58:56 a-test-1772868e-a036-4392-bbfc-d7c811967e88.novalocal kubelet-wrapper[4082]: E0514 01:58:56.624800    4082 eviction_manager.go:214] eviction manager: unexpected err: failed GetNode: node '192.168.57.12' not found

Answer 1

这是由etcd的版本引起的，你通过在apiserver配置文件中设置版本来解决这个问题。

你也可以通过升级你的etcd来解决这个问题。我建议您阅读this doc以了解如何升级etcd。

Answer 2

我能够通过在kube-apiserver.yaml中设置以下两个参数来解决这个问题。问题是默认情况下，api服务器配置为与etcd3服务器通信。所以我必须专门设置ETCD版本。

--storage-backend=etcd2
--storage-media-type=application/json

修改后无法启动api服务器

2 个答案: