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Graceful Shutdown
yihuang edited this page Apr 23, 2024
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The node can be gracefully shut down when terminated with signal SIGTERM or SIGQUIT, for example in shell, use kill -TERM $PID, or kill -QUIT $PID.
Graceful shutdown makes sure there are no version mismatch issues on start-up, it also flushes the versiondb wal on shutdown, to support smooth rocksdb version upgrade.
Cosmovisor kills the process un-gracefully by default, you need to set the environment variable DAEMON_SHUTDOWN_GRACE=1m to enable it, the value is a timeout duration, after which it'll fall back to un-gracefully kill.