May 2019
Intermediate to advanced
442 pages
11h 36m
English
Content preview from Hands-On Infrastructure Monitoring with Prometheus
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HAProxy exporter
HAProxy, a well-known load balancing solution, at the time of writing does not expose Prometheus metrics natively. Fortunately, it has an exporter, made by the Prometheus maintainers, to ensure its metrics can be collected, which is the haproxy_exporter. HAProxy natively exposes its metrics in comma-separated value (CSV) format via a configurable HTTP endpoint by using the stats enable configuration. The haproxy_exporter, which runs as a separate daemon, is able to connect to the HAProxy stats endpoint, consume the CSV, and convert its contents to the Prometheus metric format, exposing it in a synchronous manner when triggered by a scrape.
Instrumenting the load-balancer layer can be quite useful when the applications in ...
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