Unique node Ids or synchronised VU Ids across multiple nodes in Cloud execution mode

[letsrokk]

[Context]

For some test scenarios we need to have an ability to generate unique IDs which we can in HTTP requests - e.g. for client registration APIs

For local executions we are using __VU and __ITER to generate IDs like 001000004 where 001 is VU number and 000004 is iteration number.

But when tests are executed in Cloud mode in multiple availability zones __VU can overlap because VU are individually tracked for each load generator node.

It would be nice to either track VUs across nodes (ideally) or get unique node Id or number so we can generate values like 01001000004 (${node}${vu}${iter})

[markjmeier]

@na-- The Load Impact cloud execution variables should solve this: https://support.loadimpact.com/4.0/test-running/cloud-execution/#load-impact-environment-variables specifically LI_INSTANCE_ID.

[mstoykov]

I do think that this should be closed given @markjmeier comment ?

[na--]

I agree, anything more than that should probably fall under #1320