Installing Prometheus on Linux via Binary and Docker

Prometheus is an open‑source monitoring and alerting system originally inspired by Google’s Borgmon; it became a Cloud Native Computing Foundation project in 2016 and is widely used for infrastructure observability.

Binary installation – Download the tarball, extract it, copy the binaries to /usr/local/bin/ , back up the default prometheus.yml , create /etc/prometheus , place the configuration file there, validate it with promtool check config /etc/prometheus/prometheus.yml , and start Prometheus with prometheus --config.file "/etc/prometheus/prometheus.yml" . Use ps -ef | grep prometheus to confirm the process and reload the configuration with kill -HUP <pid> .

Docker installation – On a second host, install Docker, copy the prometheus.yml to /tmp/ , then run the official image: docker run -d -p 9090:9090 -v /tmp/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus . Verify the container is running with docker ps -a and restart it if necessary using docker restart <container_id> .

Both methods complete the Prometheus setup; after installation, you can access the UI at http:// :9090 and continue with cluster‑wide deployment in future updates.