(There's a quick-and-dirty way with a shell script, but you won't notice if one process or the other fails there's a complex way involving something like supervisord, but it can hide process output and you might not be aware of serious trouble.) If you did want to run the node exporter in Docker (with almost all of Docker's controls disabled) you'd generally run it in a separate container. The general answer to "how do I install X in a container" is to add it to your image's Dockerfile, re-run docker build to rebuild the image, stop and delete your existing container, and re-run docker run against the new image.Īlso as a general rule, running more than one process in a Docker container is discouraged: it adds significant complexity and operational difficulties. You don't need the node exporter, and there's nothing Docker-specific about this setup.Īs a general rule you never install anything in a running container, since it will get lost as soon as the container exits and is deleted (which is an extremely routine occurrence). If you just want to monitor your applications, you need to add the Prometheus Java library and have your application serve its data on /metrics. 1 Configuring Prometheus Node Exporter Locally and Remote 2 Install (or upgrade) nodeexporter 3 Start nodeexporter 4 Configure prometheus scraping 5. Configured Prometheus to scrape Node Exporter metrics and optionally ship them to Grafana Cloud. Node Exporter will expose these as Prometheus-style metrics. (Probes for things like device statistics, processes, and the state of the NTP daemon won't work well from inside a container.) The Prometheus Node Exporter is a single static binary that you can install via tarball. After running through the steps in this quickstart, you will have: Set up and configured Node Exporter to collect Linux system metrics like CPU load and disk I/O. Run it once, and given the nature of the stats it collects, run it directly on the host. Since all Docker containers on a given host share the same host kernel, it doesn't make sense to run this in every container. In this article I’ll show how to install and configure Node Exporter on Ubuntu and CentOS using a systemd service manager. It allows to measure various machine resources such as memory, disk and CPU utilization. The Prometheus node exporter collects "hardware and OS metrics exposed by *NIX kernels". Node Exporter is a Prometheus exporter for hardware and OS metrics with pluggable metric collectors.
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