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CVM Node Exporter

Last updated: 2024-01-29 15:55:08

This document describes how to install Node Exporter to expose CVM basic metrics to TMP.
Directions
Step 1. Download and install Node Exporter
Download and install Node Exporter (used to collect basic metric data) in the target CVM instance. Click here or run the following command for download:
wget https://github.com/prometheus/node_exporter/releases/download/v1.3.1/node_exporter-1.3.1.linux-amd64.tar.gz && tar -xvf node_exporter-1.3.1.linux-amd64.tar.gz
The file directory is as follows: 
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Step 2. Run Node Exporter to collect basic monitoring data
1. Go to the target folder and run Node Exporter.
cd node_exporter-1.3.1.linux-amd64
./node_exporter
If the following result is displayed, basic monitoring data has been collected successfully.
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2. Run the following command to expose the basic monitoring data to port 9100:
curl 127.0.0.1:9100/metrics
You can see the following metric monitoring data that is exposed after the command is executed.
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Step 3. Configure the collection
Log in to the TMP console, select Integration Center > CVM, and configure the information in Task Configuration as prompted.
Below is a sample configuration of a scrape task:
job_name: example-job-name
metrics_path: /metrics
cvm_sd_configs:
- region: ap-guangzhou
  ports:
  - 9100
  filters:         
  - name: tag: Sample tag key
    values: 
    - Sample tag value
relabel_configs: 
- source_labels: [__meta_cvm_instance_state]
  regex: RUNNING
  action: keep
- regex: __meta_cvm_tag_(.*)
  replacement: $1
  action: labelmap
- source_labels: [__meta_cvm_region]
  target_label: region
  action: replace
Step 4. Check whether data is reported successfully
Log in to the TMP console and click the Grafana icon to enter Grafana.
Search for {job="cvm_node_exporter"} in Explore to see whether there is data, and if so, data is reported successfully.
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Step 5. Configure the dashboard
Every product has some existing JSON files that can be directly imported into the dashboard.  
1. Download a dashboard file: Go to the Dashboard page, search for node_exporter, and select the latest dashboard for download.
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2. Import a JSON file into the dashboard: Log in to the TMP console, select Basic Info > Grafana Address to enter Grafana. In the Grafana console, select Create > Import and upload the dashboard file in Upload JSON file.
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