运行 mongo shell 使用 kubernetes 作业的脚本

Question

我需要创建 kubernetes 作业，它将运行低于 mongo shell 上的脚本：

var operations = [];
db.product.find().forEach(function(doc) {
    var documentLink = doc.documentLink; 
    var operation = { updateMany :{ 
"filter" : {"_id" : doc._id},
"update" : {$set:{"documentLinkMap.en":documentLink,"documentLinkMap.de":""},
    $unset: {documentLink:"","descriptionMap.tr":"","news.tr":"","descriptionInternal.tr":"","salesDescription.tr":"","salesInternal.tr":"","deliveryDescription.tr":"","deliveryInternal.tr":"","productRoadMapDescription.tr":"","productRoadMapInternal.tr":"","technicalsAndIntegration.tr":"","technicalsAndIntegrationInternal.tr":"","versions.$[].descriptionMap.tr":"","versions.$[].releaseNoteMap.tr":"","versions.$[].artifacts.$[].descriptionMap.tr":"","versions.$[].artifacts.$[].artifactNotes.tr":""}}}};
    operations.push(operation); 
});
operations.push( {
    ordered: true,      
    writeConcern: { w: "majority", wtimeout: 5000 } 
});
db.product.bulkWrite(operations);

我需要一份这份工作的样本。我应该创建持久卷并声明它的所有权，还是有可能在没有持久卷的情况下运行这项工作？我需要运行这一次然后删除它。

Answer 1

您可以使用 configMap 更轻松地解决它，然后将 configMap 安装为将在文件中解析的卷。

下面是如何进行操作的示例（注意！您需要为其使用适当的图像以及一些其他更改 mongo shell 的工作方式）：

从文件创建 configMap。可以通过运行这个命令来完成：

$ kubectl create cm mongoscript-cm --from-file=mongoscript.js
configmap/mongoscript-cm created

您可以通过运行:

检查您的文件是否存储在里面

$ kubectl describe cm mongoscript-cm

从 configmap (spec template is the same as it used in pods) 创建一个带有卷挂载的作业：

apiVersion: batch/v1
kind: Job
metadata:
  name: mongojob
spec:
  template:
    spec:
      containers:
      - name: mongojob
        image: ubuntu # for testing purposes, you need to use appropriate one
        command: ['bin/bash', '-c', 'echo STARTED ; cat /opt/mongoscript.js ; sleep 120 ; echo FINISHED'] # same for command, that's for demo purposes
        volumeMounts:
        - name: mongoscript
          mountPath: /opt # where to mount the file
      volumes:
      - name: mongoscript
        configMap:
          name: mongoscript-cm # reference to previously created configmap
      restartPolicy: OnFailure # required for jobs

检查 pod 内部的外观

连接到 pod：

$ kubectl exec -it mongojob--1-8w4ml -- /bin/bash

已提交检查文件：

# ls /opt
mongoscript.js

检查其内容：

# cat /opt/mongoscript.js 
var operations = [];
db.product.find().forEach(function(doc) {
    var documentLink = doc.documentLink; 
    var operation = { updateMany :{ 
"filter" : {"_id" : doc._id},
"update" : {$set {"documentLinkMap.en":documentLink,"documentLinkMap.de":""},
    $unset: {documentLink:"","descriptionMap.tr":"","news.tr":"","descriptionInternal.tr":"","salesDescription.tr":"","salesInternal.tr":"","deliveryDescription.tr":"","deliveryInternal.tr":"","productRoadMapDescription.tr":"","productRoadMapInternal.tr":"","technicalsAndIntegration.tr":"","technicalsAndIntegrationInternal.tr":"","versions.$[].descriptionMap.tr":"","versions.$[].releaseNoteMap.tr":"","versions.$[].artifacts.$[].descriptionMap.tr":"","versions.$[].artifacts.$[].artifactNotes.tr":""}}}};
    operations.push(operation); 
});
operations.push( {
    ordered: true,      
    writeConcern: { w: "majority", wtimeout: 5000 } 
});
db.product.bulkWrite(operations);

运行 mongo shell 使用 kubernetes 作业的脚本

Running mongo shell script using kubernetes job

shell

jobs

mongodb

kubernetes