Prometheus
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Prometheus是一個TSDB。
安裝
Ubuntu 18.04系統內的Prometheus太舊（2.1），加上沒有適合的PPA可以用，這邊使用官方的binary安裝：
cd /tmp; wget https://github.com/prometheus/prometheus/releases/download/v2.22.0/prometheus-2.22.0.linux-amd64.tar.gz; tar zxvf prometheus-2.22.0.linux-amd64.tar.gz; cd prometheus-2.22.0.linux-amd64; sudo cp prometheus promtool /usr/bin; sudo mkdir /etc/prometheus; sudo cp prometheus.yml /etc/prometheus/; sudo cp -R consoles/ console_libraries/ /etc/prometheus/; sudo useradd -r -U prometheus; sudo mkdir /var/lib/prometheus; sudo chown prometheus:prometheus /var/lib/prometheus; echo -e "[Unit]\nDescription=Prometheus Time Series Collection and Processing Server\nWants=network-online.target\nAfter=network-online.target\n\n[Service]\nUser=prometheus\nGroup=prometheus\n\nType=simple\n
ExecStart=/usr/bin/prometheus --config.file /etc/prometheus/prometheus.yml --storage.tsdb.path /var/lib/prometheus/ --web.console.templates=/etc/prometheus/consoles --web.console.libraries=/etc/prometheus/console_libraries\n\n[Install]\nWantedBy=multi-user.target" | sudo tee /lib/systemd/system/prometheus.service; sudo systemctl daemon-reload; sudo systemctl enable prometheus; sudo service prometheus start
設定
要注意官方安裝檔內的prometheus.yml中scrape_interval與evaluation_interval預設是15s（但不設定時預設是1m），正常情況下5m應該是夠用，可以考慮指定5m降低頻率。
外部連結
- 官方網站 （英文）