Kubernetes Web UI 默认的配置下语言会跟着浏览器的语言走，也就是说你的浏览器语言是中文的话，面板的语言默认也是中文，并且无法通过面板上的设置来选择语言。大多数时候当然是母语最适合用户，但是像 k8s 这种系统，网上查到的资料大都是英文的，所以反倒是看到对应的中文术语的时候会让人愣一下，反应下这个中文对应的英文术语是什么。所以我个人更倾向将开发工具都默认设置为英文，很多情况下这反倒是提高了我的工作效率。

既然 k8s 的面板默认没有提供语言的选择，有没有办法来切换呢？

在网上搜索了一番，貌似都没有特别成熟或者方便的办法，下面这个网址算是一个解决办法：

https://jimmysong.io/kubernetes-handbook/practice/dashboard-upgrade.html

设置接口的语言
我们看到现在 dashboard 的页面都已经被汉化了，当前支持英文、中文简体、中文繁体、日语，根据浏览器的语言自动切换的。如果想要强制设置 dashboard 中显示的语言，需要在 dahsboard 的 Deployment yaml 配置中增加如下配置：
env:
  - name: ACCEPT_LANGUAGE
    value: english
更简单的方式是，如果您使用的Chrome浏览器，则在浏览器中的配置中设置语言的顺序后刷新网页，dashboard将以您在Chrome中配置的首选语言显示。

完整示例

# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# ------------------- Dashboard Secret ------------------- #

apiVersion: v1
kind: Secret
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard-certs
  namespace: kube-system
type: Opaque

---
# ------------------- Dashboard Service Account ------------------- #

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system

---
# ------------------- Dashboard Role & Role Binding ------------------- #

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: kubernetes-dashboard-minimal
  namespace: kube-system
rules:
  # Allow Dashboard to create 'kubernetes-dashboard-key-holder' secret.
  - apiGroups: [""]
    resources: ["secrets"]
    verbs: ["create"]
    # Allow Dashboard to create 'kubernetes-dashboard-settings' config map.
  - apiGroups: [""]
    resources: ["configmaps"]
    verbs: ["create"]
    # Allow Dashboard to get, update and delete Dashboard exclusive secrets.
  - apiGroups: [""]
    resources: ["secrets"]
    resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs"]
    verbs: ["get", "update", "delete"]
    # Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
  - apiGroups: [""]
    resources: ["configmaps"]
    resourceNames: ["kubernetes-dashboard-settings"]
    verbs: ["get", "update"]
    # Allow Dashboard to get metrics from heapster.
  - apiGroups: [""]
    resources: ["services"]
    resourceNames: ["heapster"]
    verbs: ["proxy"]
  - apiGroups: [""]
    resources: ["services/proxy"]
    resourceNames: ["heapster", "http:heapster:", "https:heapster:"]
    verbs: ["get"]

---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: kubernetes-dashboard-minimal
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: kubernetes-dashboard-minimal
subjects:
  - kind: ServiceAccount
    name: kubernetes-dashboard
    namespace: kube-system

---
# ------------------- Dashboard Deployment ------------------- #

kind: Deployment
apiVersion: apps/v1beta2
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: kubernetes-dashboard
  template:
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
    spec:
      containers:
        - name: kubernetes-dashboard
          image: registry.cn-hangzhou.aliyuncs.com/google_containers/kubernetes-dashboard-amd64:v1.10.0
          ports:
            - containerPort: 8443
              protocol: TCP
          ##设置语言为英文显示
          env:
            - name: ACCEPT_LANGUAGE
              value: english
          args:
            - --auto-generate-certificates
            # Uncomment the following line to manually specify Kubernetes API server Host
            # If not specified, Dashboard will attempt to auto discover the API server and connect
            # to it. Uncomment only if the default does not work.
            # - --apiserver-host=http://my-address:port
          volumeMounts:
            - name: kubernetes-dashboard-certs
              mountPath: /certs
              # Create on-disk volume to store exec logs
            - mountPath: /tmp
              name: tmp-volume
          livenessProbe:
            httpGet:
              scheme: HTTPS
              path: /
              port: 8443
            initialDelaySeconds: 30
            timeoutSeconds: 30
      volumes:
        - name: kubernetes-dashboard-certs
          secret:
            secretName: kubernetes-dashboard-certs
        - name: tmp-volume
          emptyDir: {}
      serviceAccountName: kubernetes-dashboard
      # Comment the following tolerations if Dashboard must not be deployed on master
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule

---
# ------------------- Dashboard Service ------------------- #

kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system
spec:
  type: NodePort
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 31001
  selector:
    k8s-app: kubernetes-dashboard


---
# Create ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
  - kind: ServiceAccount
    name: kubernetes-dashboard
    namespace: kube-system

可以说是两种方法：一种是部署 dashboard 的时候强制指定为英文，也就是说会无视用户浏览器的语言配置，默认都返回英文的页面；另一种是设置浏览器的语言，将浏览器的语言设置为英文即可。

两种方法都有弊端，前者我们必须有 k8s dashboard 的部署控制权，这在很多时候是不可能的，另外，这也剥夺了用户使用本地化语言的权力；后者的话会导致浏览器请求所有的网页都按照英文来请求，这也不是我们所期待的。

有没有办法能够只让 k8s dashboard 请求英文网页，而不影响其他网站呢，经过一番研究我找到了一个相对不算特别复杂的方法。

首先安装一个 chrome 插件：Locale Switcher。打开 k8s dashboard 可以通过点击插件图标来切换语言，选择英文即可。

不过这个插件默认是全局生效的，所以一但点击英文，所有的网站请求都会默认有限请求英文的网站。虽然可以通过点击中文来切换回来，比起到浏览器的语言设置里修改语言已经简单了许多。但是毕竟我们不想总是这样的手工控制语言切换。

其实chrome是可以指定插件可以生效的网站范围的，右键点击插件图标，选择管理扩展进程就会跳转到插件的管理页面，会看到一个条目是 有权访问的网站 ，在此条目下选择 在特定网站上 ，并在下面填写你的 k8s dashboard 个地址，形如 https://your-host:port/* (注意 *)。

这样将插件选择成英文后，再次刷新你的 k8s dashboard 页面时，语言就默认是英文了，而其他网站的语言设置却不受插件的影响，如果你嫌插件的图标占地方，甚至可以选择隐藏图标，因为大概率你以后不需要再点击这个图标了。

当然，这个方法也支持将其他网站的请求语言设置为不同的语言，不仅限于 k8s dashboard 。