Reloadable HAProxy inspired from multibinder.
- Rust(only on build)
- HAProxy
- Linux or macOS
Using rustup is recommended.
# git clone https://github.com/realityone/RAProxy.git
# cd Raproxy
# cargo installThen you can run raproxy in your terminal.
# raproxy
error: The following required arguments were not provided:
--binary <binary>
--config <cfg>
--service <service>...
USAGE:
raproxy --binary <binary> --config <cfg> --service <service>... --pid <pid>
For more information try --helpFirst of all, please make sure you have installed original HAProxy on your machine.
Simply type haproxy in terminal for test.
# haproxy
HA-Proxy version 1.7.2 2017/01/13
Copyright 2000-2017 Willy Tarreau <[email protected]>
...If error, you should install it first.
Here is an example.
global
maxconn 256
defaults
mode http
timeout connect 5000ms
timeout client 50000ms
timeout server 50000ms
frontend http-in
bind fd@${APP_1}
use_backend sina
backend sina
server sina www.sina.com:80
In frontend http-in, use fd@{__NAME__} for bind specification. The __NAME__ should be your service name which will defined in RAProxy, I will explain it later.
- The HAProxy binary is at
/usr/local/bin/haproxy - The HAProxy config file is at
/etc/haproxy/haproxy.cfg - We want bind frontend
http-inat address0.0.0.0:8080for incoming traffic. And we name it asAPP_1.
# raproxy -b /usr/local/bin/haproxy -c /etc/haproxy/haproxy.cfg -s APP_1=0.0.0.0:8080
INFO:raproxy: HAProxy process started: PID 46972Using curl for test.
# curl -H 'Host: sina.com' 127.0.0.1:8080
<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx/1.5.2</center>
</body>
</html>Find the raproxy process, and emit SIGHUP signal.
# ps ax | grep raproxy
46971 s001 S+ 0:00.00 raproxy -b /usr/local/bin/haproxy -c /etc/haproxy/haproxy.cfg -s APP_1=0.0.0.0:8080
47083 s004 S+ 0:00.00 grep raproxy
# kill -s HUP 46971Then the new HAProxy process will be created, and the last will exit gracefully.
# raproxy -b /usr/local/bin/haproxy -c /etc/haproxy/haproxy.cfg -s APP_1=0.0.0.0:8080
INFO:raproxy: HAProxy process started: PID 46972
INFO:raproxy: HAProxy process started: PID 47098
INFO:raproxy: Process exited: Exited(46972, 0)
- Auto detect HAProxy binary.
- Reload RAProxy self.
- Integrate with SystemD.