Backport of command/server: add support to write pprof files to the filesystem via SIGUSR2 into release/1.13.x #20622
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Backport
This PR is auto-generated from #20609 to be assessed for backporting due to the inclusion of the label backport/1.13.x.
The below text is copied from the body of the original PR.
This adds support to dump pprof outputs to the filesystem when
VAULT_PPROF_WRITE_TO_FILEand optionallyVAULT_PPROF_FILE_PATHset on the Vault process. This is very useful in situations where HTTP handlers are unresponsive and we cannot use the sys/pprof endpoints. I put this behind an environment variable because files are generated each time there's a SIGUSR2 signal to avoid unintentionally generating a lot of files.Overview of commits