api_test.py

#!/usr/bin/env python3

import socket
import json
import time
import os
import sys

# reset if mh drops below this num
min_hashes=61900

# time for reboot + claymore to get share and start hashing
loop_seconds = 60
delay_seconds = 90

host='127.0.0.1'
port=8080

def check_rig(host,port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        s.connect((host, port))
        print("connected")
        s.send('{"id":0,"jsonrpc":"2.0","method":"miner_getstat1"}\n'.encode("utf-8"))
        j=s.recv(2048)
        s.close()                                                                                                         
        resp=json.loads(j.decode("utf-8"))
        resp=resp['result']
        res0 = resp[2].split(';')
        hashes = int(res0[0])
        print("KH/s=" + str(hashes) + " Accepted:" +res0[1]+" Rejected:"+res0[2])
        hash_ok=min_hashes < hashes
        print("hashes ok is: " + str(hash_ok))
        sys.stdout.flush()
        return hash_ok
    except TimeoutError:
        print("connection timeout")
        sys.stdout.flush()
    except ConnectionRefusedError:
        print("connection refused")
        sys.stdout.flush()
    except:
        print("exception")
        sys.stdout.flush()
    return False

print("Initial start delay")
sys.stdout.flush()
time.sleep(delay_seconds)
# main loop
while True:
    if not check_rig(host,port):
        print("resetting rig")
        os.system('/sbin/reboot')
#    else:
#        print("rig ok!")
#    print( "loop sleep" )
    time.sleep(loop_seconds)

Enable logs from previous boots:

 mkdir /var/log/journal
 systemd-tmpfiles --create --prefix /var/log/journal
 systemctl restart systemd-journald