FAQ: Farm Operators#

#Identify the miner with RED LED in the Farm

You can enable and disable the LED from web GUI > the top right menu > Quick Action > Enable/Disable the LED

For identifying a device in your farm you can run the command below from SSH or BOS Toolbox command tab.

miner fault_light on

This command will turn on RED LED on the miner

miner fault_light off

This command will turn off RED LED on the miner

ssh root@10.10.10.10 "miner fault_light on"

Example using SSH

Miner identification can be done with a Braiins Toolbox as well, see here

#Miner Signalization (LED)

Miner LED signalization depends on its operational mode. There are two modes (recovery and normal) which are signaled by the green and red LEDs on the front panel. The LED on the control board (inside) always shows the heartbeat (i.e. flashes at a load average based rate).

#Recovery Mode

Recovery mode is signaled by the flashing green LED (50 ms on, 950 ms off) on the front panel. The red LED represents access to a NAND disk and flashes during factory reset when data is written to NAND.

#Normal Mode

The normal mode state is signaled by the combination of the front panel red and green LEDs as specified in the table below:

#How to quickly paused/resumed mining? (S19/S17 series)

Mining on the can be quickly paused/resumed which is suitable for farms participating in grid programs. E.g. pause command looks like this:

echo '{"command":"pause"}' | nc IP.AD.RE.SS 4028

#Get current DHCP IP and set it as Static IP

You can use BOS Toolbox and uci commands to assign current device IP to Static IP.

This command will use the toolbox command functionality - it runs the command on all devices listed in the iplist.txt file.

This specific command sets up static ip address and gateway (it takes the current IP address and gateway) and also sets the netmask to 255.255.255.0

./bos-toolbox command iplist.txt './lib/functions/network.sh; network_flush_cache; network_find_wan NET_IF; network_get_ipaddr NET_ADDR "${NET_IF}"; network_get_gateway NET_GW "${NET_IF}"; uci set network.lan.ipaddr=${NET_ADDR}; uci set network.lan.gateway=${NET_GW}; uci set network.lan.netmask="255.255.255.0"; uci set network.lan.proto="static"; uci commit network'

#Collect tcpdump logs for connection troubleshooting

SSH to the miner, run the commands below, and let it run for at least 15 minutes.

tcpdump -i any -s 65535 -w /tmp/dumpv2.pcap port 3336 or port 3337

#Stratum V2

tcpdump -i any -s 65535 -w /tmp/dumpv1.pcap port 3333

#Stratum V1

Then you can use scp command or WinSCP software to download the collected log.

Next Step in following article "Run Stratum probe and collect logs for connection" in section troubleshooting.

#What happens when a miner loses internet connection

The miner will continue to mine for 3 minutes, in case a block is discovered during the outage. If within 3 minutes the internet is restored, the work is submitted to the available pool.