fix

haproxy/config/haproxy.cfg

@@ -45,7 +45,7 @@ listen mqtt-in
  timeout server 3h
  option external-check
  option log-health-checks
- external-check path "/usr/local/bin:/bin"
+ external-check path "/usr/bin:/bin:/usr/local/bin"
  external-check command /usr/local/bin/check_mqtt.sh
  server tbMqtt1 47.99.83.75:31883 check inter 10s rise 2 fall 3 
  server tbMqtt2 47.97.197.103:31883 check inter 10s rise 2 fall 3

haproxy/data/check_mqtt.sh

-#!/bin/bash
+#!/bin/sh
 echo $@ >> /tmp/all_arguments.txt
 ip_adr=$(echo $@|awk '{print $3}')
 if mosquitto_pub -h $ip_adr -p 31883 -u 123456 -t v1/devices/me/attributes -f test-mqtt.json -q 1 -d; then