Prometheus blackbox exporter example1/1/2024 If you have installed the Prometheus Operator using kube-prometheus-stack chart, then you can add the configuration under additionalScrapeConfigs in values.yml. We will be editing the prometheus.yml by adding the configurations. You can install/know more about Prometheus Operator from InfraCloud’s prometheus-operator-helm-guide. Prometheus is a prerequisite for Blackbox Exporter, we will be using Prometheus Operator to install Prometheus. You can add the modules for blackbox.yml in the values.yml config section:Įnter fullscreen mode Exit fullscreen modeĬonfiguring Prometheus for Blackbox Exporter We will be using the prometheus-community/prometheus-blackbox-exporter Helm chart to install Blackbox Exporter, it can be found in prometheus-blackbox-exporter. Installing and Configuring Blackbox Exporter in Kubernetes In small deployments and infrastructure, a static list is easy to maintain, it is very easy to forget about updating that list once you have multiple clusters and environments, maintenance of such monitoring solutions becomes very cumbersome. This means we do not have to manually change the endpoints, Prometheus and Blackbox Exporter takes care of generating the endpoints dynamically with the help of Prometheus’ kubernetes_sd_configs functionality. As a response to that query, Blackbox Exporter generates metrics for the queried endpoint. Inside the config, you define modules, then Prometheus can query each of the modules for a set of targets. One point to be noted is that most exporters accept static configurations and expose metrics, Blackbox Exporter works a little differently. In a production infrastructure with multiple services and endpoints, the regular endpoint monitoring solutions monetarily cost us hefty amounts even for small probe checks, Blackbox Exporter in this case is an open-source alternative to available solutions and is maintained by the Prometheus community. There are various tools available for monitoring endpoints like Datadog, Freshping,, etc. With some config changes on the Prometheus side, the Blackbox Exporter then sends metrics relevant to the configs applied, we will see this in more detail in the coming sections. You can have a look at the detailed example for more scenarios in this example.yml. The probe will fail if the endpoint is not SSL secured Timeout after 15s if no response received List of status codes for the probe to return success for your applications Here is a default module defined in the Blackbox Exporter config: The following diagram shows the flow of Blackbox Exporter monitoring an endpoint. One of the most important feature of Blackbox Exporter is measuring the response time of endpoints. After you define the endpoint, Blackbox Exporter generates metrics that can be visualized using tools like Grafana. Blackbox monitoring on the other hand includes monitoring the behavior from outside that affects users like server down, page not working, or degradation of site performance.īlackbox Exporter is used to probe endpoints like HTTPS, HTTP, TCP, DNS, and ICMP. Whitebox monitoring refers to monitoring the internals of the system including application logs, metrics from handlers. These metrics are an important piece of the infrastructure to ensure continuity of service and compliance with some security certifications. In a Kubernetes system, not just the external endpoints that need to be monitored, internal endpoints are also required to be monitored for latency and other parameters. In the current context, endpoint monitoring refers to monitoring internal and external endpoints (HTTP/S, DNS, TCP, and ICMP) for various parameters including HTTP latencies, DNS lookup latencies, SSL certificate expiry information, TLS version. What is Endpoint monitoring, why is it needed? Other exporters can be found in Exporters and integrations docs page. Probe endpoints over HTTP/S, DNS, TCP, and ICMPĬonnects to Redis instance and provides Redis metrics in Prometheus readable formatĮxposes hardware and OS metrics for *NIX kernelsĬonnects to Elasticsearch instance and provides various Elasticsearch metrics in Prometheus readable formatĪdd-on agent which provides metrics about various Kubernetes objects, such as pods, nodes, and deployments
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