How to add an APM Insight Node.js agent in Kubernetes via InitContainers?

How to add an APM Insight Node.js agent in Kubernetes via InitContainers?

To integrate the APM Insight Node.js agent into your Kubernetes applications using InitContainers, follow the steps given below:

Step 1:
Create an empty volume that will be used to copy the agent files during the initContainers process.
Example:
  1. volumes:
  2.    - name: app-volume

Step 2:
Include the following initContainers command in your helm chart/deployment YAML file.
  1. initContainers:
  2.       - name: init-npm
  3.         image: site24x7/apminsight-nodejsagent:latest
  4.         imagePullPolicy: IfNotPresent
  5.         command: ['cp', '-r', '/opt/site24x7/.', '/apm']
  6.         volumeMounts:
  7.   - name: app-volume
  8.     mountPath: /apm

Step 3:
Mount the volume created in step 2 into your application container.
Example:
  1. containers:
  2.           env:
  3.             - name: NODE_OPTIONS
  4.               value: "--require /apm/node_modules/apminsight"
  5.             - name: APMINSIGHT_LICENSE_KEY
  6.               value: "<license-key>"
  7.             - name: APMINSIGHT_APP_NAME
  8.               value: "<application-name>"
  9.             - name: APMINSIGHT_APP_PORT
  10.               value: "<application-port>"
  11.             - name: APMINSIGHT_APM_HOST
  12.               value: "<manageengine-applications-manager-server-host>"
  13.             - name: APMINSIGHT_APM_PORT
  14.               value: "<manageengine-applications-manager-server-port>"
  15.          volumeMounts:
  16.             - mountPath: /apm   
  17.         name: app-volume 
Example YAML deployment file for your reference:
  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: sample-deployment
  5. spec:
  6.   replicas: 1
  7.   selector:
  8.     matchLabels:
  9.       app: sample-app
  10.   template:
  11.     metadata:
  12.       labels:
  13.         app: sample-app
  14.     spec:
  15.       initContainers:
  16.       - name: init-npm
  17.         image: site24x7/apminsight-nodejsagent:latest
  18.         imagePullPolicy: IfNotPresent
  19.         command: ['cp', '-r', '/opt/site24x7/.', '/apm']
  20.         volumeMounts:
  21.              - name: app-volume
  22.                 mountPath: /apm

  24.       containers:
  25.         - name: main-container
  26.           image: myrepository/sample-nodejs-app:latest
  27.           env:
  28.             - name: NODE_OPTIONS
  29.               value: "--require /apm/node_modules/apminsight"
  30.             - name: APMINSIGHT_LICENSE_KEY
  31.               value: "<license-key>"
  32.             - name: APMINSIGHT_APP_NAME
  33.               value: "<application-name>"
  34.             - name: APMINSIGHT_APP_PORT
  35.               value: "<application-port>"
  36.             - name: APMINSIGHT_APM_HOST
  37.               value: "<manageengine-applications-manager-server-host>"
  38.             - name: APMINSIGHT_APM_PORT
  39.               value: "<manageengine-applications-manager-server-port>"
  40.           volumeMounts:
  41.             - mountPath: /apm   
  42.               name: app-volume
  43.       volumes:
  44.          - name: app-volume 
  45.       emptyDir: {}

Related articles

How to install various APM Insight agents in a Kubernetes environment
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