Cherry-pick #12401 to 7.x: [libbeat] AWS ELB Monitoring #13105
Merged
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Cherry-pick of PR #12401 to 7.x branch. Original message:
Autodiscovery provider for AWS ELBs.
Not a lot to add besides that, the rest is in the docs provided within this PR.
One open question is the amount of testing to do here. We're still not sure if we want to introduce this as a beta feature, which might change the answer there. Ultimately, the AWS library is very tricky to mock. There is an elasticloadbalancingv2iface package that supposedly makes things easier, but realistically, you have to implement so much the value of that is dubious. Real functional testing with the AWS APIs is probably the only satisfactory answer, but that too is a significant investment.