Install the ARMS agent for an application deployed in an open source Kubernetes environment

Step 1: Install the ARMS agent

ARMS can monitor only the following two types of applications: Deployment and StatefulSet. In this topic, a Deployment application that is deployed in an open source Kubernetes environment is used as an example. To enable ARMS to monitor the Deployment application, perform the following steps:

1. Download the arms-pilot installation package by using one of the following methods:
   • Method 1: Download arms-pilot installation package of the latest version.
   • Method 2: Run the following wget command to download the arms-pilot installation package:

     wget 'http://arms-apm-hangzhou.oss-cn-hangzhou.aliyuncs.com/arms-pilot/arms-pilot-0.1.1-community.tgz' -O arms-pilot-0.1.1.tgz                                

2. Run the following command to decompress the arms-pilot installation package:

   tar zxvf arms-pilot-0.1.1-community.tgz                   

3. Open the values.yaml file in the installation package. Change the values of the uid and region_id parameters as needed and save the edit.

   userId: __USER_ID__
   regionId: __REGION_ID__

4. Run the following command to install arms-pilot:

   helm install ./arms-pilot-community --namespace arms-pilot-system                        

Step 2: Obtain the license key

1. Log on to the ARMS console.
2. In the left-side navigation pane, choose Application Monitoring > Applications. In the top navigation bar, select a region.
3. On the Applications page, click Add Application in the upper-right corner.
4. In the upper part of the Add Application page, click the copy icon to the right of the license key and save the key.

   

Step 3: Edit the YAML file of the application

1. Run the following command to view the YAML file of the Deployment application:

   kubectl get deployment {Name of the Deployment application} -o yaml                            

   Note If you do not know the name of the Deployment application, run the following command to view all Deployment applications. You can find the required Deployment application in the results. Then, view the YAML file of the application.

   kubectl get deployments --all-namespace                

2. Run the following command to open the YAML file of the Deployment application:

   kubectl edit deployment {Name of the Deployment application} -o yaml                        

3. In the YAML file, go to the spec -> template -> metadata -> labels directory and append the following content:

   ARMSApmAppName: xxx
   ARMSApmLicenseKey: xxx                           

   Notice

   • Replace xxx with your application name and license key. The application name cannot contain Chinese characters.
   • Replace the at sign (@) in the license key with an underscore (_).
   The following example shows a complete YAML file for creating a Deployment application in an open source Kubernetes environment and enabling ARMS to monitor the application:

   Show details of the YAML file

   apiVersion: apps/v1beta1 # for versions before 1.8.0 use apps/v1beta1
   kind: Deployment
   metadata:
     name: arms-springboot-demo
     labels:
       app: arms-springboot-demo
   spec:
     replicas: 2
     selector:
       matchLabels:
         app: arms-springboot-demo
     template:
       metadata:
         labels:
           app: arms-springboot-demo
           ARMSApmLicenseKey: "xxx_xxx"
           ARMSApmAppName: "arms-k8s-demo"
       spec:
         containers:
           - resources:
               limits:
                 cpu: 0.5
             image: registry.cn-hangzhou.aliyuncs.com/arms-docker-repo/arms-springboot-demo:v0.1
             imagePullPolicy: Always
             name: arms-springboot-demo
             env:
               - name: MYSQL_SERVICE_HOST
                 value: "arms-demo-mysql"
               - name: MYSQL_SERVICE_PORT
                 value: "3306"
   ---
   apiVersion: apps/v1beta1 # for versions before 1.8.0 use apps/v1beta1
   kind: Deployment
   metadata:
     name: arms-demo-mysql
     labels:
       app: mysql
   spec:
     replicas: 1
     selector:
       matchLabels:
         app: mysql
     template:
       metadata:
         labels:
           app: mysql
       spec:
         containers:
           - resources:
               limits:
                 cpu: 0.5
             image: registry.cn-hangzhou.aliyuncs.com/arms-docker-repo/arms-demo-mysql:v0.1
             name: mysql
             ports:
               - containerPort: 3306
                 name: mysql
   ---
   apiVersion: v1
   kind: Service
   metadata:
     labels:
       name: mysql
     name: arms-demo-mysql
   spec:
     ports:
       # the port that this service should serve on
       - name: arms-mysql-svc
         port: 3306
         targetPort: 3306
     # label keys and values that must match in order to receive traffic for this service
     selector:
       app: mysql
   ---
   

4. After the preceding configurations are saved, the application automatically restarts and then the configurations take effect.

   After 2 to 5 minutes, if your application is displayed on the Application Monitoring > Applications page in the ARMS console and specific monitoring data is reported, your application is monitored by ARMS.

Uninstall the ARMS agent

1. If you no longer want to use ARMS to monitor your Java applications deployed in an open-source Kubernetes environment, run the following command to uninstall arms-pilot:

   helm del --purge arms-pilot

2. Restart your business pod.