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Signals

Command Line

On Unix systems, the NATS server responds to the following signals:
Signal
Result
SIGKILL
Kills the process immediately
SIGQUIT
Kills the process immediately and performs a core dump
SIGINT
Stops the server gracefully
SIGTERM
Stops the server gracefully
SIGUSR1
Reopens the log file for log rotation
SIGHUP
Reloads server configuration file
SIGUSR2
Stops the server after evicting all clients (lame duck mode)
The nats-server binary can be used to send these signals to running NATS servers using the -sl flag:

Quit the server

nats-server --signal quit

Stop the server

nats-server --signal stop

Lame duck mode the server

nats-server --signal ldm

Reopen log file for log rotation

nats-server --signal reopen

Reload server configuration

nats-server --signal reload

Multiple processes

If there are multiple nats-server processes running, or if pgrep isn't available, you must either specify a PID or the absolute path to a PID file:
nats-server --signal stop=<pid>
nats-server --signal stop=/path/to/pidfile
As of NATS v2.10.0, a glob expression can be used to match one or more process IDs, such as:
nats-server --signal ldm=12*

Windows

See the Windows Service section for information on signaling the NATS server on Windows.