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Chapter 12. Flow metrics
This section shows the metrics available to a Prometheus instance when you enable the flow collector using skupper init --enable-flow-collector. Most metrics share a set of common labels as shown below, exceptions are shown beside appropriate metrics.
The metrics are available from https://skupper.<namespace>.svc.clusterlocal:8010/api/v1alpha1/metrics when console-auth is set to internal (default) or unsecured. Replace <namespace>` with the appropriate namespace where the Service Interconnect is deployed.
Metrics
The following metrics are available to a Prometheus instance:
- flows_total
- For tcp protocol this is the total number of connections. For http or http2 protocol this is the total number of distinct requests made.
- octets_total
- The total number of bytes delivered through the service network.
- active_flows
- The number of flows currently active including open tcp connections and in flight http requests.
- http_requests_method_total
Total number of http requests grouped by method.
Additional label: The http
method, for example,GET,HEAD,POST.- http_requests_result_total
Total number of http requests by response code.
Additional label: The http response
code, for example200,403,503.- active_links
-
The total number of links between sites. Only
sourceSiteanddirectionlabels are available for these metrics. - active_routers
- The total number of routers. No labels available for filtering.
- active_sites
- The total number of sites. No labels available for filtering.
Labels
The following labels are common to most of the metrics allowing you to filter and categorize the data:
- address
- The address relating to the metric. Typically, this is the service name.
- sourceSite
- The site where the flow originated for the metric. This string is a combination of the site name and the site ID.
- destSite
- The site where the flow terminated for the metric. This string is a combination of the site name and the site ID.
- direction
-
The direction of flow. For traffic sent from a client to server the value is
incoming. For traffic sent from a client to server the value isoutgoing. - protocol
-
The protocol used by the flow,
tcp,http, orhttp2. - sourceProcess
- The name of the process originating the flow.
- destProcess
- The name of the process receiving the flow.
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