systemd prototyping #1960
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systemd prototyping #1960
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Summary: Pull Request resolved: meta-pytorch#1960 Differential Revision: D87582955
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Summary: Pull Request resolved: meta-pytorch#1960 Differential Revision: D87582955
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Summary: Pull Request resolved: meta-pytorch#1960 Differential Revision: D87582955
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Summary: this is research into using systemd to manage transient units and surface their output. this change wires up an optional systemd feature in hyperactor_mesh and teaches BUCK to build with that feature. GitHub / OSS builds never enable the feature and so avoid depending on libsystemd being present on the runners. in rust, src/systemd.rs gains more transient units tests: experiments with log aggregation. the journald-based test is gated on `target_os = "linux"` and the `systemd` feature and then soft-fails if the journal or D-Bus session aren't available; this reflects the reality that GitHub CI and Meta devgpu/devvm journal configuration don't let us rely on that path. in response, this diff explores a more robust approach where units write to file descriptors we pass in over D-Bus (via `UnixStream::pair` and `Fd`), and we aggregate logs from one or many units in-process using async readers. this gives us a workable story for "systemd for unit management, Unix sockets for log transport" even where journald isn't practically usable. Differential Revision: D87582955
Summary: this is research into using systemd to manage transient units and surface their output. this change wires up an optional systemd feature in hyperactor_mesh and teaches BUCK to build with that feature. GitHub / OSS builds never enable the feature and so avoid depending on libsystemd being present on the runners. in rust, src/systemd.rs gains more transient units tests: experiments with log aggregation. the journald-based test is gated on `target_os = "linux"` and the `systemd` feature and then soft-fails if the journal or D-Bus session aren't available; this reflects the reality that GitHub CI and Meta devgpu/devvm journal configuration don't let us rely on that path. in response, this diff explores a more robust approach where units write to file descriptors we pass in over D-Bus (via `UnixStream::pair` and `Fd`), and we aggregate logs from one or many units in-process using async readers. this gives us a workable story for "systemd for unit management, Unix sockets for log transport" even where journald isn't practically usable. Differential Revision: D87582955
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Differential Revision: D87582955