Grafana Kurulumu ve Sunucuların Monitör Edilmesi

Grafana'nın yetenekleri oldukça fazla ve görselliği ile yeterince beyenilen ve bir çok veriyi tek bir noktadan takip etmemizi sağlayan açık kaynak kodlu bir uygulamadır. Kurulum için debian işletim sistemi tercih edeceğim.

Grafana Kurulumu

Arayüz ve pluginlerin yönetim için gerekli olan Grafana.

su -
mkdir grafana
cd grafana
wget https://dl.grafana.com/oss/release/grafana_9.3.6_amd64.deb
dpkg -i grafana_9.3.6_amd64.deb
systemctl status grafana-server.service

Grafana Konfig Dosyası

vim /etc/grafana/grafana.ini
[server]
protocol = http
http_addr = 127.0.0.1
http_port = 3000
domain = 127.0.0.1
root_url = http://127.0.0.1:3000

[security]
admin_user = admin
admin_password = admin
secret_key = xxxxx

Prometheus Kurulumu

Anlık akışları grafana için köprü kurmasına yardımcı olacak.

su -
mkdir grafana/prometheus
cd grafana/prometheus
wget https://github.com/prometheus/prometheus/releases/download/v2.42.0-rc.0/prometheus-2.42.0-rc.0.linux-amd64.tar.gz
tar xzvf prometheus-2.42.0-rc.0.linux-amd64.tar.gz
cd prometheus-2.42.0-rc.0.linux-amd64/

Prometheus Konfig Dosyası

vim prometheus.yml
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.

alerting:
  alertmanagers:
    - static_configs:
        - targets:
          # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

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

  - job_name: node
    static_configs:
      - targets: ['localhost:9100']

Çalıştırmak İçin

./prometheus --config.file=prometheus.yml

Servis dosyasını oluşturlalım.

vim /etc/systemd/system/prometheus.service
[Unit]
Description=Prometheus Service
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/root/Download/grafana/prometheus/prometheus-2.42.0-rc.0.linux-amd64/prometheus --config.file=/root/Download/grafana/prometheus/prometheus-2.42.0-rc.0.linux-amd64/prometheus.yml

Restart=always

[Install]
WantedBy=multi-user.target

systemctl status prometheus.service

Node Exporter Kurulumu

Sunucumuzun bilgilerini izlememizi sağlayacak CPU, MEM vb...

su -
mkdir grafana/node_exporter
cd grafana/node_exporter
wget https://github.com/prometheus/node_exporter/releases/download/v1.5.0/node_exporter-1.5.0.linux-amd64.tar.gz
tar xvfz node_exporter-1.5.0.linux-amd64.tar.gz
cd node_exporter-1.5.0.linux-amd64/
./node_exporter

Servisimiz kuralım

vim /etc/systemd/system/node-exporter.service
[Unit]
Description=Node Exporter
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/root/Download/grafana/node_exporter/node_exporter-1.5.0.linux-amd64/node_exporter

Restart=always

[Install]
WantedBy=multi-user.target

Nginx ve benzeri logların monitöring edilmesi gerekli olan servisler LOKI, PROMTAIL

Promtail Kurulumu

su -
mkdir grafana/promtail
cd grafana/promtail
wget https://github.com/grafana/loki/releases/download/v2.7.2/promtail-linux-amd64.zip
unzip promtail-linux-amd64.zip

Promtail Config Dosyası

vim promtail-config.yml
server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

clients:
  - url: http://127.0.0.1:3100/loki/api/v1/push

scrape_configs:

- job_name: local
  static_configs:
  - targets:
      - 127.0.0.1
    labels:
      job: varlogs
      __path__: /var/log/nginx/*log

Çalıştırmak İçin

./promtail-linux-amd64 -config.file=promtail-config.yml

Servis dosyası

vim /etc/systemd/system/promtail.service
[Unit]
Description=Promtail Service
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/root/Download/grafana/promtail/promtail-linux-amd64 --config.file=/root/Download/grafana/promtail/promtail-config.yml

Restart=always

[Install]
WantedBy=multi-user.target

systemctl start promtail
systemctl enable promtail

Loki Kurulumu

su -
mkdir grafana/loki
cd grafana/loki
curl -O -L "https://github.com/grafana/loki/releases/download/v2.7.2/loki-linux-amd64.zip"
unzip "loki-linux-amd64.zip"
chmod a+x "loki-linux-amd64"
cd loki-linux-amd64

Loki Config Doyası

vim loki-config.yml
auth_enabled: false

server:
  http_listen_port: 3100
  grpc_listen_port: 9096

common:
  path_prefix: /tmp/loki
  storage:
    filesystem:
      chunks_directory: /tmp/loki/chunks
      rules_directory: /tmp/loki/rules
  replication_factor: 1
  ring:
    instance_addr: 127.0.0.1
    kvstore:
      store: inmemory

schema_config:
  configs:
    - from: 2020-10-24
      store: boltdb-shipper
      object_store: filesystem
      schema: v11
      index:
        prefix: index_
        period: 24h

ruler:
  alertmanager_url: http://localhost:9093

Şimdi çalıştırabiliriz.

./loki-linux-amd64 -config.file=loki-config.yml

Loki Servis dosyası

vim /etc/systemd/system/loki.service
[Unit]
Description=Loki Service
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/root/Download/grafana/loki-linux-amd64 --config.file=/root/Download/grafana/loki-config.yml

Restart=always

[Install]
WantedBy=multi-user.target

systemctl start loki

Sertifika sürelerini takip etmek isteyebiliriz.

su -
mkdir grafana/node-cert-exporter
cd grafana/node-cert-exporter
wget https://github.com/amimof/node-cert-exporter/releases/latest/download/node-cert-exporter-linux-amd64
chmod u+x node-cert-exporter-linux-amd64
./node-cert-exporter-linux-amd64 --include-glob /etc/letsencrypt/live/*/*.pem

Servise çevirelim.

vim /etc/systemd/system/node-cert-exporter.service
[Unit]
Description=Node-Cert Exporter
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/root/Download/grafana/node-cert-exporter/node-cert-exporter-linux-amd64 --include-glob /etc/letsencrypt/live/*/*.pem

Restart=always

[Install]
WantedBy=multi-user.target

Servisimizi aktif edelim.

systemctl start node-cert-exporter
systemctl enable node-cert-exporter