Netdata init script for Synology DSM

rc.netdata

#!/bin/bash

# 1. Install this as `/usr/local/etc/rc.d/rc.netdata`
# 2. Create the directory `/volume1/netdata`
# 3. Symlink `/opt/netdata` to `/volume1/netdata`
# 4. Create a triggered task with Task Scheduler to call `/usr/local/etc/rc.d/rc.netdata start` at boot. 
#    - (You may have to turn on Advanced Mode in the Control Panel to see Task Scheduler)
# 5. Either reboot or run `sudo /usr/local/etc/rc.d/rc.netdata start` 

# If you get an error about "Connection Failed," then you've already run Netdata and filled `/`. 
# Stop netdata and move `/opt/netdata` to `/volume1/netdata` before continuing with step 3 above.

NETDATA_DIR=/opt/netdata
DAEMON=$NETDATA_DIR/bin/srv/netdata
TIMEOUT=30  # seconds to wait for netdata to exit

[ -x $DAEMON ] || exit 0

function get_pid() {
	pid=$( ps ax | grep -v grep | grep -m 1 $DAEMON | awk '{ print $1 }' )
}

function check_netdata() {
	count=1
	while [ $count -lt $TIMEOUT ]; do
		get_pid
		if [ -z $pid ]; then
			break
		else
			sleep 1
			count=$(( $count + 1))
		fi
	done

	if [ $count -eq $TIMEOUT ]; then
		echo "Timeout exceeded waiting for netdata to exit."
		echo "Use '$0 kill' to force netdata to exit."
		exit 1
	fi
}

function stop_netdata() {
	get_pid
	if [ "x$pid" != "x" ]; then
		if [ "x$1" = "xforce" ]; then
			kill -9 $pid
		else
			kill $pid
		fi
	else
		echo "No running netdata found."
	fi

}

function start_netdata() {
	get_pid
	if [ "x$pid" = "x" ]; then
		echo "Starting Netdata."
		$DAEMON
	else
		echo "Netdata already running with pid $pid"
	fi
}

case "$1" in
    start)
		start_netdata
    ;;
    stop)
		echo "Shutting down Netdata."
		stop_netdata
    ;;
	restart)
		echo "Shutting down Netdata."
		stop_netdata
		if [ "x$pid" != "x" ]; then
			echo "Waiting maximum of $TIMEOUT seconds for netdata to exit."
		fi
		check_netdata
		start_netdata
	;;
	kill)
		echo "Killing netdata."
		stop_netdata force
	;;
	status)
		get_pid
		if [ "x$pid" != "x" ]; then
			echo "Netdata running with PID $pid"
		else
			echo "No running netdata found."
		fi
	;;
    *)
        echo "Usage: $0 {start|stop|kill|restart|status}"
        exit 1
esac

exit 0

Synology DSM >= 6.1 no longer calls rc.local, so I've updated the script with new instructions.

First, don't let Netdata write to /opt/netdata because the DSM root partition is only ~2GB in size. Symlink /opt/netdata to /volume1/netdata.

Second, use Task Scheduler to create a Triggered Task that fires at boot and calls /usr/local/etc/rc.d/rc.netdata start. I'm not sure if /etc gets overwritten during DSM updates, but allegedly /usr/local/etc/rc.d is safe. I haven't tried an upgrade yet. Alternatively you can put it in /volume1/netdata and call it from there.

Synology DSM >= 6.1 no longer calls rc.local, so I've updated the script with new instructions.

First, don't let Netdata write to /opt/netdata because the DSM root partition is only ~2GB in size. Symlink /opt/netdata to /volume1/netdata.

Second, use Task Scheduler to create a Triggered Task that fires at boot and calls /usr/local/etc/rc.d/rc.netdata start. I'm not sure if /etc gets overwritten during DSM updates, but allegedly /usr/local/etc/rc.d is safe. I haven't tried an upgrade yet. Alternatively you can put it in /volume1/netdata and call it from there.

Hi, does auto update of netdata works using this solution for you?
I tried and after updating using kickstart script, netdata doesn't start anymore. Kickstart script creates a systemd service which seems to be having some issues due to symlink i think.

No idea. I don't use netdata anymore.