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@@ -0,0 +1,19 @@
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+engine = "vllm"
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+name = "Test Heartbeat Container"
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+docker_image = "alpine:latest"
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+model = "noop"
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+
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+# Heartbeat loop: prints a timestamped line every 2s with UTC time and
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+# the container hostname so you can tell logs from different nodes apart.
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+#
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+# Use it to verify the logging pipeline:
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+# cargo run serve --recipe test-sleep # spins up the cluster
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+# cargo run logs --recipe test-sleep # last 100 lines per node
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+# cargo run logs --recipe test-sleep --follow # live stream from head
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+#
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+# Each line looks like: 10:42:13 [n0] heartbeat 42
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+entrypoint = ["sh", "-c", "i=0; while true; do echo \"$(date -u +%H:%M:%S) [$(hostname)] heartbeat $i\"; i=$((i+1)); sleep 2; done"]
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+
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+args = []
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+
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+[env]
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