haproxytechblog · February 18, 2023 22:49
diff --git a/blog20210202-01.cfg b/blog20210202-01.cfg
 frontend default
  bind :80

  # ACL for "example.com" and "www.example.com"
  acl ACL_example.com hdr(host) -i example.com www.example.com
  use_backend be_example.com if ACL_example.com

  # ACL for "example.net"
  acl ACL_example.net hdr(host) -i example.net
  use_backend be_example.net if ACL_example.net
diff --git a/blog20210202-02.cfg b/blog20210202-02.cfg
 use_backend be_example_net if ACL_example.net
diff --git a/blog20210202-03.cfg b/blog20210202-03.cfg
 frontend fe_main
  bind :80
  # If Host header is api.example.com then use 
  # api.example.com backend
  use_backend %[req.hdr(Host),lower]
diff --git a/blog20210202-04.cfg b/blog20210202-04.cfg
 backend api.example.com
  balance            roundrobin
  server api1    127.0.0.1:8080 check
  server api2    127.0.0.1:8081 check
diff --git a/blog20210202-05.map b/blog20210202-05.map
 #domainname           backendname
 example.com           be_default
 example.net           be_default
 api.example.com       be_api
 api1.example.net      be_api1
 api2.example.com      be_api2
 # [...]
 api10000.example.com  be_api
diff --git a/blog20210202-06.cfg b/blog20210202-06.cfg
 frontend default
   bind :80
   use_backend %[req.hdr(host),lower,map_dom(/etc/haproxy/maps/hosts.map,be_default)]
diff --git a/blog20210202-07.cfg b/blog20210202-07.cfg
 use_backend be_example.com if ACL_example.com
diff --git a/blog20210202-08.cfg b/blog20210202-08.cfg
 frontend www
  bind :80
  use_backend %[path,map_beg(/etc/haproxy/maps/routes.map,be_default)]
diff --git a/blog20210202-09.map b/blog20210202-09.map
 /api    be_api
 /login  be_auth
diff --git a/blog20210202-10.cfg b/blog20210202-10.cfg
 stats socket /var/run/haproxy.sock
  user haproxy group haproxy mode 660 level admin expose-fd listeners
diff --git a/blog20210202-11.bash b/blog20210202-11.bash
 $ echo "help" | sudo socat stdio /var/run/haproxy.sock | grep map
diff --git a/blog20210202-12.txt b/blog20210202-12.txt
 add map       : add map entry
 clear map <id> : clear the content of this map
 del map       : delete map entry
 get map       : report the keys and values matching a sample for a map
 set map       : modify map entry
 show map [id] : report available maps or dump a map's contents
diff --git a/blog20210202-13.sh b/blog20210202-13.sh
 $ echo "add map /etc/haproxy/maps/hosts.map api.example.com be_api" | socat stdio /var/run/haproxy.sock
diff --git a/blog20210202-14.sh b/blog20210202-14.sh
 $ echo "del map /etc/hapee-2.1/hosts.map api.example.com" | socat  stdio /var/run/haproxy.sock
diff --git a/blog20210202-15.cfg b/blog20210202-15.cfg
 dynamic-update
  update id /etc/hapee-2.1/maps/domains.map url http://10.0.0.1/domains.map delay 300s
	frontend default
	bind :80

	# ACL for "example.com" and "www.example.com"
	acl ACL_example.com hdr(host) -i example.com www.example.com
	use_backend be_example.com if ACL_example.com

	# ACL for "example.net"
	acl ACL_example.net hdr(host) -i example.net
	use_backend be_example.net if ACL_example.net
	frontend fe_main
	bind :80
	# If Host header is api.example.com then use
	# api.example.com backend
	use_backend %[req.hdr(Host),lower]
	backend api.example.com
	balance roundrobin
	server api1 127.0.0.1:8080 check
	server api2 127.0.0.1:8081 check
	#domainname backendname
	example.com be_default
	example.net be_default
	api.example.com be_api
	api1.example.net be_api1
	api2.example.com be_api2
	# [...]
	api10000.example.com be_api
	frontend default
	bind :80
	use_backend %[req.hdr(host),lower,map_dom(/etc/haproxy/maps/hosts.map,be_default)]
	frontend www
	bind :80
	use_backend %[path,map_beg(/etc/haproxy/maps/routes.map,be_default)]
	stats socket /var/run/haproxy.sock
	user haproxy group haproxy mode 660 level admin expose-fd listeners
	add map : add map entry
	clear map <id> : clear the content of this map
	del map : delete map entry
	get map : report the keys and values matching a sample for a map
	set map : modify map entry
	show map [id] : report available maps or dump a map's contents
	dynamic-update
	update id /etc/hapee-2.1/maps/domains.map url http://10.0.0.1/domains.map delay 300s