Grafana+Loki+Promtailを使ってログ収集してみる

# Lokiインストール
wget https://github.com/grafana/loki/releases/download/v2.5.0/loki-linux-amd64.zip
unzip loki-linux-amd64.zip
# Loki用ConfigファイルDL
wget https://raw.githubusercontent.com/grafana/loki/master/cmd/loki/loki-local-config.yaml
# 起動
./loki-linux-arm64 -config.file=loki-local-config.yaml

wget https://github.com/grafana/loki/releases/download/v2.5.0/promtail-linux-amd64.zip
unzip promtail-linux-amd64.zip
wget https://raw.githubusercontent.com/grafana/loki/main/clients/cmd/promtail/promtail-local-config.yaml

# ログ送信先サーバ(Lokiサーバ)指定
clients:
  - url: http://{LokiサーバIP}:3100/loki/api/v1/push

# 監視するログファイルを指定
scrape_configs:
- job_name: system
  static_configs:
  - targets:
      - localhost
    labels:
      job: varlogs
      __path__: /var/log/messages

- job_name: secure
  static_configs:
  - targets:
      - localhost
    labels:
      job: varlogs
      __path__: /var/log/secure

# Promtailの起動
./promtail-linux-amd64 --config.file=promtail-local-config.yaml