Mysql exporter for prometheus1/3/2024 ![]() ![]() YAML uses whitespace indentation to express hierarchy, so you can recognise that two modules named http_2xx and http_post_2xx are defined, and that they both have a prober http and for one the method value is specifically set to POST. ![]() The first few lines look like this: modules: We will copy this file, adapt it to our own needs and tell the exporter to use our config file instead of the one included in the container.įirst download the file using curl or your browser: curl -o blackbox.yml The modules are predefined in a file inside the docker container called config.yml which is a copy of blackbox.yml in the github repo. Because this is an exporter guide we will change the exporter and take the opportunity to configure a custom module. In the real world both can make sense and as so often the answer to the question "what is to be done?" is "it depends". We could now either tell Docker to allow IPv6 or the blackbox exporter to use IPv4. Hence our blackbox exporter running in a Docker container can’t connect via IPv6. But the Docker daemon blocks IPv6 until told otherwise. By default the prober uses IPv6 until told otherwise. The reason is hidden in the metric probe_ip_protocol with the value 6. This means the prober could not successfully reach prometheus.io. Notice that almost all metrics have a value of 0. # HELP probe_success Displays whether or not the probe was a success ![]() # HELP probe_ip_protocol Specifies whether probe ip protocol is IP4 or IP6 # HELP probe_http_version Returns the version of HTTP of the probe response # HELP probe_http_status_code Response HTTP status code # HELP probe_http_ssl Indicates if SSL was used for the final redirect # HELP probe_http_redirects The number of redirects # TYPE blackbox_exporter_build_info gaugeīlackbox_exporter_build_info 0 The response should be something like this: # HELP blackbox_exporter_build_info A metric with a constant '1' value labeled by version, revision, branch, and goversion from which blackbox_exporter was built. You can manually try the first query type with curl in another terminal or use this link: This is likely what you are primarily interested in, when using multi-target exporters. Usually available at a "descriptive" endpoint, e.g. Querying the exporter to scrape another target.It has its own metrics, usually available at /metrics. You should see a few log lines and if everything went well the last one should report msg="Listening on address" as seen here: level=info ts=T15:41:35.4997596Z caller=main.go:324 msg="Listening on address" address=:9115 Depending on your system configuration you might need to prepend the command with a sudo: docker run -p 9115:9115 prom/blackbox-exporter Use Docker to start a blackbox exporter container by running this in a terminal. Because they are queried and do query over network they do need appropriate open ports. As regular programs, in containers, as background services, on baremetal, on virtual machines. Multi-target exporters are flexible regarding their environment and can be run in many ways. latency and reachability of a website from a specific point outside of our network, a common use case for the blackbox exporter. ![]() network gear speaking SNMP, or that we are explicitly interested in the distance, e.g. The reason is that we either can’t run an exporter on the targets, e.g. This pattern is only used for certain exporters, such as the blackbox and the SNMP exporter. the exporter can query multiple targets.the exporter subsequently starts the scrape after getting Prometheus’ GET requests and once it is done with scraping.the exporter gets the targets and a query config string as parameters of Prometheus’ GET request.the exporter does not have to run on the machine the metrics are taken from.the exporter will get the target’s metrics via a network protocol.examine a popular pattern of configuring Prometheus to scrape exporters using relabeling.īy multi-target exporter pattern we refer to a specific design, in which:.let the blackbox exporter run basic metric queries against the Prometheus website,.configure a custom query module for the blackbox exporter,.run the blackbox exporter as an example of the pattern,.describe the multi-target exporter pattern and why it is used,.This guide will introduce you to the multi-target exporter pattern. Querying multi-target exporters with Prometheus.Basic querying of multi-target exporters. ![]()
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