I have a stupid problem, I have a Bitcoin ASIC called a Hex miner. For some reason every 12 hours the thing slows down from 24GH/sec to 5GH/sec. The only way I have found to solve the problem is to power cycle the controller and the unit itself. This would be a pain since I have it in my basement. However I salvaged some old Bay Technologies PDUs in my rack, which means I can power outlets on and off through a telnet session.
I did a little searching and learned how to do some scripting with the unix program “expect”
This is a very specific script, but it did what I need it to do:
#!/usr/bin/expect
spawn telnet xxx.xxx.xxx.xxx 23
expect "Enter Selection>"
send 1\r
expect "RPC-3>"
send "off 1\r"
expect "Turn OFF HEX-WRT? (Y/N)>"
send Y\r
expect "RPC-3>"
send "off 2\r"
expect "Turn OFF HEX-PWR? (Y/N)>"
send "Y\r"
expect "RPC-3>"
send "on 2\r"
expect "Turn ON HEX-PWR? (Y/N)>"
send "Y\r"
expect "RPC-3>"
send "on 1\r"
expect "Turn ON HEX-WRT? (Y/N)>"
send "Y\r"
expect "RPC-3>"
send "menu\r"
expect "Enter Selection>"
send "6\r"
It blazes through resetting the outlets.
RPC-3 Telnet Host
Revision F 4.20a, (C) 1999
Bay Technical Associates
Unit ID: RPC3-2
Option(s) installed:
True RMS Current
Internal Temperature
RPC-3 Menu:
1)...Outlet Control
2)...Manage Users
3)...Configuration
4)...Unit Status
5)...Reset Unit
6)...Logout
Enter Selection>1
True RMS current: 2.0 Amps
Maximum Detected: 2.3 Amps
Internal Temperature: 36.0 C
Circuit Breaker: On
Selection Outlet Outlet Power
Number Name Number Status
1 HEX-WRT 1 On
2 HEX-PWR 2 On
3 Outlet 3 3 On
4 Outlet 4 4 On
5 Outlet 5 5 On
6 Outlet 6 6 On
7 Outlet 7 7 On
8 Outlet 8 8 On
Type "Help" for a list of commands
RPC-3>off 1
Turn OFF HEX-WRT? (Y/N)>Y
True RMS current: 2.1 Amps
Maximum Detected: 2.3 Amps
Internal Temperature: 36.0 C
Circuit Breaker: On
Selection Outlet Outlet Power
Number Name Number Status
1 HEX-WRT 1 Off
2 HEX-PWR 2 On
3 Outlet 3 3 On
4 Outlet 4 4 On
5 Outlet 5 5 On
6 Outlet 6 6 On
7 Outlet 7 7 On
8 Outlet 8 8 On
Type "Help" for a list of commands
RPC-3>off 2
Turn OFF HEX-PWR? (Y/N)>Y
True RMS current: 0.6 Amps
Maximum Detected: 2.3 Amps
Internal Temperature: 36.0 C
Circuit Breaker: On
Selection Outlet Outlet Power
Number Name Number Status
1 HEX-WRT 1 Off
2 HEX-PWR 2 Off
3 Outlet 3 3 On
4 Outlet 4 4 On
5 Outlet 5 5 On
6 Outlet 6 6 On
7 Outlet 7 7 On
8 Outlet 8 8 On
Type "Help" for a list of commands
RPC-3>on 2
Turn ON HEX-PWR? (Y/N)>Y
True RMS current: 0.7 Amps
Maximum Detected: 2.3 Amps
Internal Temperature: 36.0 C
Circuit Breaker: On
Selection Outlet Outlet Power
Number Name Number Status
1 HEX-WRT 1 Off
2 HEX-PWR 2 On
3 Outlet 3 3 On
4 Outlet 4 4 On
5 Outlet 5 5 On
6 Outlet 6 6 On
7 Outlet 7 7 On
8 Outlet 8 8 On
Type "Help" for a list of commands
RPC-3>on 1
Turn ON HEX-WRT? (Y/N)>Y
True RMS current: 0.7 Amps
Maximum Detected: 2.3 Amps
Internal Temperature: 36.0 C
Circuit Breaker: On
Selection Outlet Outlet Power
Number Name Number Status
1 HEX-WRT 1 On
2 HEX-PWR 2 On
3 Outlet 3 3 On
4 Outlet 4 4 On
5 Outlet 5 5 On
6 Outlet 6 6 On
7 Outlet 7 7 On
8 Outlet 8 8 On
Type "Help" for a list of commands
RPC-3>menu
RPC-3 Menu:
1)...Outlet Control
2)...Manage Users
3)...Configuration
4)...Unit Status
5)...Reset Unit
6)...Logout
Enter Selection>
[root@rackable1 scripts]#