Introduction Prometheus

This slide was presented at "CloudNative Days Tokyo Meetup w/ Melanie Cebula" held on July 20, 2019.
It's 5 minutes Lightning Talks.

CloudNative Days Tokyo Meetup w/ Melanie Cebula - connpass
https://wantedly.connpass.com/event/135968/

Transcript

1. Introduction Prometheus
   Takuma Nakagame, SAKURA internet Inc.
   

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2. Takuma Nakagame
   @kameneko1004
   ● SAKURA internet Inc.
   ○ Cloud Service Provider
   ● IT infrastructure engineer
   ● Evangelist
   ● LIKE
   ○ Prometheus
   ○ FreeNAS
   

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3. What is Prometheus?
   

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4. What is Prometheus？
   ● A Monitoring system developed by the engineers of SoundCloud
   ● Recording real-time metrics in a time series database build using a Pull model
   ● Automatic discovery of their targets by ServiceDiscovery
   ● Written in Golang
   

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5. Dream Hack Monitoring with Prometheus
   ● 10,000 computers
   ● 500 swtiches
   Monitoring DreamHack - The World's Largest Digital Festival | PromCon 2016
   https://promcon.io/2016-berlin/talks/monitoring-dreamhack-the-worlds-largest-digital-festival/
   

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6. Prometheus Architecture
   

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8. What ?
   

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9. The minimum essential componets to
   use Prometheus
   

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10. ● Prometheus Server
    ● Exporter
    ● Service Discovery
    ● PromQL
    

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11. ● Collecting the metrics from its targes
    ● Filtering its metrics by PromQL
    ○ WebGUI
    ● Crating Alerts
    Prometheus Server
    

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12. Exporter
    ● Monitoring Agent
    ● Expanding its metrics by HTTP and
    periodically pull these to show
    ● So-called Web server for just hitting
    API
    

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13. Exporter
    Exporters by their targets
    ● Server : NodeExporter
    ● MySQL : MySQL Server Exporter
    ● Nginx : NGINX Exporter
    ● Apache : Apache Exporter
    ● and more!
    

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14. Service Discovery
    Automatic target discovery
    ● Kubernetes
    ● AWS EC2
    ● GCP GCE
    ● OpenStack
    ● Azure
    

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15. PromQL
    ● Prometheus Query Language
    ● Filtering metrics
    ● Defining Alert
    ● WebGUI
    ● API
    ● Grafana
    

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16. An Example of PromQL
    http_requests_total
    Total number of requests in http
    http_requests_total{pod_name=”nginx1”}
    Total number of requests of POD ‘nginx1’ in http
    sum(http_requests_total)
    Sum of total requests in http
    

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17. Run Prometheus
    

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18. Run Prometheus Step
    1. Binary download
    2. Unarchive
    3. Run!
    

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19. Download Binary
    https://github.com/prometheus/prometheus/releases
    $ wget https://github.com/prometheus/prometheus/releases/download/v2.11.1/prometheus-2.11.1.linux-amd64.tar.gz
    

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20. Unarchive
    $ tar -xvf prometheus-2.9.2.linux-amd64.tar.gz
    

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21. Run
    $ cd prometheus-2.9.2.linux-amd64/
    $ ./prometheus
    

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22. Run
    $ cd prometheus-2.9.2.linux-amd64/
    $ ./prometheus
    FINISH!
    

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23. Takeaways
    

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24. 3 Takeaways
    ● Automatic target discovery
    ● Plenty of Exporters
    ● Simple
    

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