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@@ -199,6 +199,16 @@ node.data_dir = {{ platform_data_dir }}
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## Heartbeat monitoring of an Erlang runtime system. Comment the line to disable
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## heartbeat, or set the value as 'on'
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##
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+## Turning this on may cause the node to restart if it becomes unresponsive to
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+## the heartbeat pings.
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+##
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+## NOTE: When managed by systemd (or other supervision tools like systemd),
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+## heart will probably only cause EMQ X to stop, but restart or not will
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+## depend on systemd's restart strategy.
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+## NOTE: When running in docker, the container will die as soon as the the
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+## heart process kills EMQ X, but restart or not will depend on container
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+## supervision strategy, such as k8s restartPolicy.
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+##
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## Value: on
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##
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## vm.args: -heart
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Zaiming Shi