Reload Prometheus config

Hot-reload Prometheus configuration without restart

curl -X POST http://prometheus:9090/-/reload
tool
prometheus30 commands
tags
prometheusmonitoring

More prometheus commands

  • Query instant vector
    curl -sG 'http://prometheus:9090/api/v1/query' --data-urlencode 'query=up' | jq '.data.result'

    Run an instant PromQL query via HTTP API

  • Range query for graph data
    curl -sG 'http://prometheus:9090/api/v1/query_range' --data-urlencode 'query=rate(http_requests_total[5m])' --data-urlencode 'start=1h' --data-urlencode 'end=now' --data-urlencode 'step=60'

    Fetch time-series data over a range for a rate metric

  • Top N series by value
    topk(10, sum by (pod) (rate(container_cpu_usage_seconds_total[5m])))

    PromQL: top 10 pods by CPU usage rate

  • Disk usage alert rule
    100 - (node_filesystem_avail_bytes{mountpoint="/"} / node_filesystem_size_bytes{mountpoint="/"} * 100) > 85

    PromQL expression: fire when root disk > 85% used

  • Reload Prometheus config
    curl -X POST http://prometheus:9090/-/reload

    Hot reload Prometheus config and rules without restart

all 30 prometheus commands