Analyze the method of prometheus+grafana monitoring nginx

In prometheus, you need to insert probes into ngxin, obtain ngxin information through the probes, and output it through the interface. The following will describe how to monitor ngxin.

1. Download

For your convenience, a wave of download addresses are provided here. If you are not particularly satisfied with the template, you can also go to the official website to download it yourself.

nginx:

Link: https://pan.baidu.com/s/1QxcWrxAEARlEhxSb2ZETjQ

Extraction code: 6fp5

nginx-module-vts-master:

Link: https://pan.baidu.com/s/1gCyAithAlRkORuZwhpcPmA

Extraction code: h9aa

nginx-vts-exporter
Link: https://pan.baidu.com/s/1gVB_I6ifDbeNIBX5x9pGAA

Extraction code: upkw

nginx-vts-stats_rev2 (grafana display template)
Link: https://pan.baidu.com/s/1VI9V395OemPkf6W-sNL9HQ

Extraction code: da56

2. Install nginx and nginx-vts-exporter

1. Unzip nginx-vts-exporter

Here nginx is reinstalled, unzip nginx-vts-exporter and put it in usr/local.

unzip nginx-module-vts-master.zip

Please note that there are requirements for the nginx version, otherwise an error will be reported. The following is the corresponding version of nginx.

2. Unzip nginx.

tar -zxvf nginx-1.14.2.tar.gz

3. Installation

Put nginx-vts-exporter in the nginx path and install it.

cd usr/local/nginx-1.14.2
./configure --prefix=/usr/local/nginx --add-module=usr/local/nginx-module-vts-master/
Note: Note that prefix=/usr/local/nginx means the installation location is the /usr/local/nginx folder.

4. Modify the conf file

http {
    vhost_traffic_status_zone;
    vhost_traffic_status_filter_by_host on;

...

server {

    ...

    location /status {
        vhost_traffic_status_display;
        vhost_traffic_status_display_format html;
    }
}

5. Startup

cd /usr/local/nginx/sbin
./nginx 

Visit http://ip/status and the following information appears, indicating that nginx and nginx-vts-exporter have been successfully installed.

3. Install nginx-vts-exporter-0.9.1.linux-amd64.tar

The installation package here is placed in usr/local and unzipped.

tar -zxvf nginx-vts-exporter-0.9.1.linux-amd64.tar

start up.

cd /usr/local/nginx-vts-exporter-0.9.1.linux-amd64
nohup ./nginx-vts-exporter -nginx.scrape_uri http://ip/status/format/json &

Enter http://ip:9913/metrics. If the following information is displayed, the system is complete.

4. Configure Prometheus

Modify /usr/local/prometheus-2.17.1.linux-amd64/prometheus.yml.

# my global config
global:
  scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).
 
# Alertmanager configuration
alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093
 
# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"
 
# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'
    static_configs:
    - targets: ['localhost:9090']
  - job_name: 'nginx'
    static_configs:
      - targets: ['ip:9913']    

The following configuration is successful.

5. Configure Grafana

Enter the grafana visualization page address: ip:3000.

1. Configure data source (prometheus address: ip:9090)

Fill in your prometheus address in the above picture, remember to fill in 9090 as the port, and click save. If it fails, there will be a prompt.

2. Visual interface template

Select the data source configured above. The prometheus option is the data source configured above.

3. Verification

The following display indicates success.

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