Selain bisa mendefine target secara static, Prometheus juga mendukung konfigurasi secara dynamically menggunakan service discovery.
Salah satunya Prometheus dapat melakukan query ke Nova API untuk me-list seluruh Instances di OpenStack sebagai target untuk dimonitoring.
Kebutuhan:
– Prometheus
– Grafana
– Node Exporter
– OpenStack RC / Credential
Langkah-langkah:
I. Prometheus Server
1. Update server dan pasang paket pendukung
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yum -y update yum -y install vim |
2. Unduh Prometheus Server
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curl -LO "https://github.com/prometheus/prometheus/releases/download/v2.5.0/prometheus-2.5.0.linux-amd64.tar.gz" tar xvfz nxvfz prometheus-2.5.0.linux-amd64.tar.gz -C /opt/ && mv prometheus-2.5.0.linux-amd64 prometheus-server cd /opt/prometheus-server/ |
3. Sunting berkas konfigurasi, sesuaikan konfigurasi yang diinginkan
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vim config.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=` to any timeseries scraped from this config. - job_name: 'prometheus' static_configs: - targets: ['localhost:9090'] - job_name: 'openstack-sd' openstack_sd_configs: - identity_endpoint: https://url-keystone-server:443/v3 username: <username> project_id: <project_id> password: <secret> role: region: domain_name: port: 9100 |
4. Verifikasi berkas config Prometheus server pastikan SUCCESS
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./promtool check config config.yml |
5. Jalankan Prometheus server sebagai service
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vim /etc/systemd/system/prometheus-server.service [Unit] Description=Prometheus Server [Service] User=root ExecStart=/opt/prometheus-server/prometheus --config.file=/opt/prometheus-server/config.yml --web.external-url=http://ip-server:9090/ [Install] WantedBy=default.target |
6. Jalankan service Prometheus Server
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systemctl daemon-reload systemctl enable prometheus-server.service systemctl start prometheus-server.service |
7. Verifikasi bahwa service Prometheus sudah berjalan
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systemctl status prometheus-server.service ss -tulpn |grep 9090 |
II. Grafana
1. Pasang Grafana
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yum -y install https://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-5.1.4-1.x86_64.rpm /sbin/chkconfig --add grafana-server |
2. Jalankan service Grafana
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systemctl enable grafana-server.service systemctl start grafana-server.service systemctl status grafana-server.service |
3. Akses Grafana Dashboard http://ip-server:3000
– Login dengan usename dan passsword admin/admin
– Klik 'Add Datasource'
– Name: Prometheus, Type: Prometheus
– Http settings: http://localhost:9090
– Klik 'Save and Test'.
Pastikan hasilnya 'success' dan 'datasource added'
4. Buat dashboard atau bisa juga unduh di https://grafana.com/dashboards sesuai dengan kebutuhan anda, sebagai contoh:
III. Node Exporter
1. Pasang Node Exporter ditiap Instance yang ingin anda monitoring
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#!/bin/bash sudo -i curl -LO "https://github.com/prometheus/node_exporter/releases/download/v0.17.0/node_exporter-0.17.0.linux-amd64.tar.gz" tar xvfz node_exporter-0.17.0.linux-amd64.tar.gz -C /opt/ cat << EOF >/etc/systemd/system/node_exporter.service [Unit] Description=Node Exporter [Service] User=root ExecStart=/opt/node_exporter-0.17.0.linux-amd64/node_exporter [Install] WantedBy=default.target EOF systemctl daemon-reload systemctl enable node_exporter.service systemctl start node_exporter.service systemctl status node_exporter.service rm -rf node_exporter-0.17.0.linux-amd64.tar.gz |
Sekarang saat ada Instances baru anda hanya perlu memasang atau menambahkan Node Exporter (bisa juga dipasang waktu create Instance di Customization Script) dan secara otomatis Prometheus server akan men-scrapenya dan viola! seluruh Instances bisa dimonitoring di dashboard Grafana sekarang 😀
Referensi:
https://medium.com/@pasquier.simon/monitoring-your-openstack-instances-with-prometheus-a7ff4324db6c
Mas Tanya dong … Dashboard Grafana nya .. id berapa ..yah
Mksh
ini saya custom mas dari https://grafana.com/dashboards/8919
Goks…
wrong dashboard
what do you mean?
https://grafana.com/dashboards/8919
on your picture is not the same.
you can customize grafana dashboard as you want 🙂
https://grafana.com/dashboards/8919
on your picture is not the same.