github.com/meysam81/prometheus-command-timer

Prometheus Command Timer

• Overview
• Features
• Installation
  • Using the Docker Image
  • Direct Download
  • Manual Installation
• Quick Start
• Kubernetes Example
• Usage
• Metrics
• Building from Source
• Contributing
• License
• Author
• Acknowledgments

A utility that executes commands and reports execution metrics to a Prometheus Pushgateway.

Overview

Prometheus Command Timer is a lightweight tool that wraps around command execution to collect and send performance metrics to a Prometheus Pushgateway.

It measures execution time, tracks exit status, and records timestamps, making it ideal for monitoring batch jobs, cron tasks, and other command-line operations in a Kubernetes environment.

Features

• Measures command execution duration
• Records command exit status
• Tracks execution timestamps
• Sends metrics to Prometheus Pushgateway
• Supports custom labels for metrics
• Works on Linux, macOS, and Windows
• Architecture support for x86_64, arm64, and i386

Installation

Using the Docker Image

docker run --rm -v \
  $(pwd):/cwd ghcr.io/meysam81/prometheus-command-timer \
  -d /cwd

Direct Download

The script will automatically detect your OS and architecture:

curl -sL https://raw.githubusercontent.com/meysam81/prometheus-command-timer/main/install.sh | sh
./prometheus-command-timer -version

Manual Installation

• Download the appropriate binary for your platform from the releases page.
• Extract the archive
• Place the binary in your $PATH

Quick Start

Basic usage:

prometheus-command-timer \
  --pushgateway-url http://pushgateway:9091 \
  --job-name backup \
  -- \
  pg_dump database

Kubernetes Example

Create a job that runs a command with timing metrics:

apiVersion: batch/v1
kind: Job
metadata:
  name: sleep
spec:
  template:
    spec:
      containers:
        - args:
            - |
              sleep 10
          command:
            - prometheus-command-timer
            - --pushgateway-url=http://pushgateway.monitoring.svc.cluster.local:9091
            - --job-name=sleep
            - "--"
          image: busybox:1
          name: sleep
          volumeMounts:
            - mountPath: /usr/local/bin/prometheus-command-timer
              name: tmp
              subPath: prometheus-command-timer
      initContainers:
        - args:
            - -d
            - /tmp
          image: ghcr.io/meysam81/prometheus-command-timer
          name: install-prometheus-command-timer
          securityContext:
            allowPrivilegeEscalation: false
            capabilities:
              drop:
                - ALL
            readOnlyRootFilesystem: true
            runAsGroup: 65534
            runAsNonRoot: true
            runAsUser: 65534
          volumeMounts:
            - mountPath: /tmp
              name: tmp
      restartPolicy: OnFailure
      volumes:
        - emptyDir: {}
          name: tmp

Usage

Usage: prometheus-command-timer [OPTIONS] -- COMMAND [ARGS...]

Executes a command and reports its duration to a Prometheus Pushgateway.

Options:
  -pushgateway-url string
        Pushgateway URL (required)
  -job-name string
        Job name for metrics (required)
  -instance-name string
        Instance name for metrics (default: hostname)
  -labels string
        Additional labels in key=value format, comma-separated (e.g., env=prod,team=infra)
  -version
        Output version
  -help, -h
        Show help message

Example:
    prometheus-command-timer \
        --pushgateway-url http://pushgateway:9091 \
        --job-name backup --instance-name db01 \
        --labels env=prod,team=infra,type=full \
        -- \
        pg_dump database

Note: Use -- to separate the wrapper options from the command to be executed.

Metrics

The following metrics are collected:

• job_duration_seconds - Total time taken for job execution in seconds
• job_exit_status - Exit status code of the last job execution (0=success)
• job_last_execution_timestamp - Timestamp of the last job execution
• job_executions_total - Total number of job executions

Building from Source

git clone https://github.com/meysam81/prometheus-command-timer.git
cd prometheus-command-timer
go build -o prometheus-command-timer

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.