Promtail
跳至導覽
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Promtail是Log傳輸軟體,屬於Grafana的Loki生態系。
安裝
在Ubuntu上可以透過官方的APT repository安裝:
sudo curl -L -o /usr/share/keyrings/grafana.key https://apt.grafana.com/gpg.key; echo "deb [signed-by=/usr/share/keyrings/grafana.key] https://apt.grafana.com stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list; sudo apt update; sudo apt install -y promtail; sudo apt clean
設定
先建立狀態目錄:
sudo mkdir /var/lib/promtail; sudo chown promtail:nogroup /var/lib/promtail
在/etc/promtail/config.yml
裡面把狀態檔案放到/var/lib/promtail
下:
positions:
filename: /var/lib/promtail/positions.yaml
另外把Loki預設的位置改成實際的位置:
clients:
- url: http://loki.example.com:3100/loki/api/v1/push
把本來的/var/log/*log
改成更廣的/var/log/**/*log
:
scrape_configs:
- job_name: system
static_configs:
- targets:
- localhost
labels:
job: varlogs
__path__: /var/log/**/*log
最後要開權限給promtail讀,包括adm
與root
兩個group:
sudo usermod -aG adm promtail; sudo usermod -aG root promtail
然後重新啟動:
sudo service promtail restart
Cheatsheet
這邊需要把loki.example.com
改成自己的Loki服務位置:
sudo curl -L -o /usr/share/keyrings/grafana.key https://apt.grafana.com/gpg.key; echo "deb [signed-by=/usr/share/keyrings/grafana.key] https://apt.grafana.com stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list; sudo apt update; sudo apt install -y promtail; sudo apt clean; sudo mkdir /var/lib/promtail; sudo chown promtail:nogroup /var/lib/promtail; sudo sed -i -e 's@filename: /tmp/positions.yaml@filename: /var/lib/promtail/positions.yaml@' -e 's@http://localhost@http://loki.example.com@' -e 's@/var/log/\*log@/var/log/**/*log@' /etc/promtail/config.yml; sudo usermod -aG adm promtail; sudo usermod -aG root promtail; sudo service promtail restart
相關連結
外部連結
- 官方網站 (英文)