HAProxy Management & Operations

# Enable stats socket for hitless reload
stats socket /var/run/haproxy.sock mode 600 expose-fd listeners level user

# Graceful restart/reload using the previous process ID and the state socket
haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -sf $(cat /run/haproxy.pid) -x /var/run/haproxy.sock

haproxy -vv | grep 'Prometheus'

frontend stats
   bind *:8404
   mode http
   option http-use-htx

   # Prometheus metrics
   http-request use-service prometheus-exporter if { path /metrics }

   # Traditional stats page
   stats enable
   stats uri /stats
   stats refresh 10s

echo "disable frontend website" | sudo socat stdio /run/haproxy.sock

# Create a restart script for the API to call
echo -e '#!/bin/sh\nhaproxy -f haproxy.cfg -p haproxy.pid -sf $(cat haproxy.pid)' > hap-restart.sh
chmod +x hap-restart.sh

# Run Data Plane API
dataplaneapi --port 5555 -b $(which haproxy) -c haproxy.cfg -d 5 -r 'hap-restart.sh' \
  -s 'haproxy -f haproxy.cfg -p haproxy.pid' -t /tmp/haproxy --userlist hap-dp

# Test API
curl -X GET --user dataplaneapi:mypassword http://localhost:5555/v2/info