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z/OS Connect observability support enables traces and metrics for REST-API requests processed by z/OS Connect servers. Traces also contain additional metadata (attributes) that can be included in capacity planning or application tuning analysis for optimal observability results.
z/OS Connect Metrics Streaming
z/IRIS supports SMF 123 version 1 and version 2 records for Metrics streaming.
z/OS Connect version 1 metrics provides zosconnect_basic metrics. These metrics provide z/OS Connect request entry and exit timestamps, elapsed time and basic request method and user data.
z/OS Connect version 2 metrics provides zosconnect_advanced metrics. These metrics provide zosconnect_basic metrics and additional data about the System-Of-Record (SOR) entry and exit timestamps, elapsed times, more request data and HTTP response codes.
For more information about these metrics, see: z/OS Connect Metrics Streaming.
z/OS Connect Trace Streaming
z/IRIS creates APM traces from SMF 123 version 2 records to enable observability for each REST-API requests processed by z/OS Connect servers. Trace attributes (i.e. tags) provide additional information about the z/OS Connect server, the incoming request and response, as well as the system connector that is used to communicate with the service provider (i.e. system of record).
Users have access to the following information for each Rest API request made by their applications processed that is processed on z/OS Connect server:
request entry and exit times reported by the z/OS Connect server, and the calculated elapsed time (span time).
request entry and exit times reported by the System-Of-Record (SOR), which can be CICS or IMS systems, Db2 or batch programs.
SOR identifiers useful for support escalation to mainframe SMEs.
request and response payload, HTTP response and z/OS authorization identifiers.
z/OS Connect Workflow Tracing
Using the z/IRIS Mainframe Workflow Tracing feature, users gain visibility into downstream applications that process the z/OS Connect APIs. This allows DevOps engineers to identify where bottlenecks occur during API processing on z/OS and determine whether APIs reached the target system of record.
z/OS Connect to CICS
When a z/OS Connect API request is processed by a CICS transaction, the z/OS Connect trace is supplemented with CICS Spans.
z/OS Connect to Db2
Contact z/IRIS engineering about additional z/OS Connect Workflows tracing.