blog20190628-01.sh

$ curl --get --user admin:mypassword \
    http://localhost:5555/v2/services/haproxy/configuration/backends

blog20190628-02.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       http://localhost:5555/v2/services/haproxy/transactions?version=1

blog20190628-03.json

{"_version":5,"id":"9663c384-5052-4776-a968-abcef032aeef","status":"in_progress"}

blog20190628-04.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"name": "test_backend", "mode":"http", "balance": {"algorithm":"roundrobin"}, "httpchk": {"method": "HEAD", "uri": "/", "version": "HTTP/1.1"}}' \     
       http://localhost:5555/v2/services/haproxy/configuration/backends?transaction_id=9663c384-5052-4776-a968-abcef032aeef

blog20190628-05.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"name": "server1", "address": "127.0.0.1", "port": 8080, "check": "enabled", "maxconn": 30, "weight": 100}' \
       "http://localhost:5555/v2/services/haproxy/configuration/servers?backend=test_backend&transaction_id=9663c384-5052-4776-a968-abcef032aeef"

blog20190628-06.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"name": "test_frontend", "mode": "http", "default_backend": "test_backend", "maxconn": 2000}' \
       http://localhost:5555/v2/services/haproxy/configuration/frontends?transaction_id=9663c384-5052-4776-a968-abcef032aeef

blog20190628-07.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"name": "http", "address": "*", "port": 80}' \
       "http://localhost:5555/v2/services/haproxy/configuration/binds?frontend=test_frontend&transaction_id=9663c384-5052-4776-a968-abcef032aeef"

blog20190628-08.sh

$ curl -X PUT --user admin:mypassword \
       -H "Content-Type: application/json" \
       http://localhost:5555/v2/services/haproxy/transactions/9663c384-5052-4776-a968-abcef032aeef

blog20190628-09.cfg

frontend test_frontend
    mode http
    maxconn 2000
    bind *:80 name http
    default_backend test_backend

backend test_backend
    mode http
    balance roundrobin
    option httpchk HEAD / HTTP/1.1
    server server1 127.0.0.1:8080 check maxconn 30 weight 100

blog20190628-10.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \ 
       http://localhost:5555/v2/services/haproxy/transactions?version=2

{"_version":2,"id":"7d0d6737-655e-4489-92eb-6d29cdd69827","status":"in_progress"}

blog20190628-11.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"name": "example_servers", "mode":"http", "balance": {"algorithm":"roundrobin"}}' \
       http://localhost:5555/v2/services/haproxy/configuration/backends?transaction_id=7d0d6737-655e-4489-92eb-6d29cdd69827

blog20190628-12.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"name": "server1", "address": "127.0.0.1", "port": 8081, "check": "enabled", "maxconn": 30, "weight": 100}' \
       "http://localhost:5555/v2/services/haproxy/configuration/servers?backend=example_servers&transaction_id=7d0d6737-655e-4489-92eb-6d29cdd69827"

blog20190628-13.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"index": 0, "acl_name": "is_example", "criterion": "req.hdr(Host)", "value": "example.com"}' \
       "http://localhost:5555/v2/services/haproxy/configuration/acls?parent_type=frontend&parent_name=test_frontend&transaction_id=7d0d6737-655e-4489-92eb-6d29cdd69827"

blog20190628-14.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"index": 0, "cond": "if", "cond_test": "is_example", "name": "example_servers"}' \
       "http://localhost:5555/v2/services/haproxy/configuration/backend_switching_rules?frontend=test_frontend&transaction_id=7d0d6737-655e-4489-92eb-6d29cdd69827"

blog20190628-15.sh

$ curl -X POST --user admin:mypassword \
       -H "Content-Type: application/json" \
       -d '{"index": 0, "cond": "if", "cond_test": "{ path /admin.php } !{ src 192.168.50.20/24 }", "type": "deny"}' \
       "http://localhost:5555/v2/services/haproxy/configuration/http_request_rules?parent_type=frontend&parent_name=test_frontend&transaction_id=7d0d6737-655e-4489-92eb-6d29cdd69827"

blog20190628-16.sh

$ curl -X PUT --user admin:mypassword \
       -H "Content-Type: application/json" \
       http://localhost:5555/v2/services/haproxy/transactions/7d0d6737-655e-4489-92eb-6d29cdd69827

blog20190628-17.cfg

frontend test_frontend
    mode http
    maxconn 2000
    bind *:80 name http
    acl is_example req.hdr(Host) example.com
    http-request deny deny_status 0 if { path /admin.php } !{ src 192.168.50.20/24 }
    use_backend example_servers if is_example
    default_backend test_backend

backend example_servers
    mode http
    balance roundrobin
    server server1 127.0.0.1:8081 check maxconn 30 weight 100

backend test_backend
    mode http
    balance roundrobin
    option httpchk HEAD / HTTP/1.1
    server server1 127.0.0.1:8080 check maxconn 30 weight 100