CODEWITHSUNDEEP
dockercontainersprometheusnginx-config
user17970
user17970

Reputation: 503

Docker prom/Prometheus container exits

when i run this command it creates the docker container but shows in exit status and i am not able to get it started

my goal is to be able to replace prometheus.yml file with a custom prometheus.yml to monitor nginx running at http://localhost:70/nginx_status

   docker run -it -d --name prometheus3 -p 9090:9090 -v 
    /opt/docker/prometheus:/etc/prometheus prom/prometheus - 
    config.file=/etc/prometheus/prometheus.yml

here is my prometheus.yml file 

     scrape_configs: 
     - job_name: 'prometheus' 

     scrape_interval: 5s 
     scrape_timeout: 5s 

     static_configs: 
       - targets: ['localhost: 9090'] 

       - job_name: 'node' 
     static_configs: 
     - targets: ['localhost: 70/nginx_status']

Upvotes: 3

Views: 3448

Answers (1)

Oliver
Oliver

Reputation: 13031

You should be able to see the logs of the stopped container by running:

docker logs prometheus3

Anyway, there are (at least) two issues with your configuration:

  1. The prometheus.yml file is invalid so the prometheus process immediately exits.
    The scrape_interval and scrape_timeout need to be in a global section and the indentation was off. See below for an example of a correctly formatted yml file.

    2.) You can't just scrape the /nginx_status endpoint but need to use a nginx exporter which extracts the metrics for you. Then the Prometheus server will scrape the nginx_exporter to retrieve the metrics. You can find a list of exporters here and pick one that suits you.
    Once you have the exporter running, you need to point Prometheus to the address of the exporter so it can be scraped.


Working prometheus.yml :

global:
  scrape_interval: 5s 
  scrape_timeout: 5s 

scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['localhost:9090']

  - job_name: 'node' 
    static_configs: 
    - targets: ['<< host name and port of nginx exporter >>']

Upvotes: 3

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