haproxy2.0 支持基于dataplaneapi 的haproxy 动态配置修改以及服务生效，早期大家为了动态
可以会基于dsn 的服务发现模式，基于confd 结合consul 动态生成配置并加载，现在支持了基于
api 的控制，还是很方便的
Usage:
dataplaneapi [OPTIONS]
API for editing and managing haproxy instances
Application Options:
--scheme= the listeners to enable, this can be repeated and defaults to the schemes in the swagger spec
--cleanup-timeout= grace period for which to wait before killing idle connections (default: 10s)
--graceful-timeout= grace period for which to wait before shutting down the server (default: 15s)
--max-header-size= controls the maximum number of bytes the server will read parsing the request header's keys and values, including the request line. It does not limit the size
of the request body. (default: 1MiB)
--socket-path= the unix socket to listen on (default: /var/run/data-plane.sock)
--host= the IP to listen on (default: localhost) [$HOST]
--port= the port to listen on for insecure connections, defaults to a random value [$PORT]
--listen-limit= limit the number of outstanding requests
--keep-alive= sets the TCP keep-alive timeouts on accepted connections. It prunes dead TCP connections ( e.g. closing laptop mid-download) (default: 3m)
--read-timeout= maximum duration before timing out read of the request (default: 30s)
--write-timeout= maximum duration before timing out write of the response (default: 60s)
--tls-host= the IP to listen on for tls, when not specified it's the same as --host [$TLS_HOST]
--tls-port= the port to listen on for secure connections, defaults to a random value [$TLS_PORT]
--tls-certificate= the certificate to use for secure connections [$TLS_CERTIFICATE]
--tls-key= the private key to use for secure connections [$TLS_PRIVATE_KEY]
--tls-ca= the certificate authority file to be used with mutual tls auth [$TLS_CA_CERTIFICATE]
--tls-listen-limit= limit the number of outstanding requests
--tls-keep-alive= sets the TCP keep-alive timeouts on accepted connections. It prunes dead TCP connections ( e.g. closing laptop mid-download)
--tls-read-timeout= maximum duration before timing out read of the request
--tls-write-timeout= maximum duration before timing out write of the response
HAProxy options:
-c, --config-file= Path to the haproxy configuration file (default: /etc/haproxy/haproxy.cfg)
-u, --userlist= Userlist in HAProxy configuration to use for API Basic Authentication (default: controller)
-b, --haproxy-bin= Path to the haproxy binary file (default: haproxy)
-d, --reload-delay= Minimum delay between two reloads (in s) (default: 5)
-r, --reload-cmd= Reload command
-s, --restart-cmd= Restart command
--reload-retention= Reload retention in days, every older reload id will be deleted (default: 1)
-t, --transaction-dir= Path to the transaction directory (default: /tmp/haproxy)
-n, --backups-number= Number of backup configuration files you want to keep, stored in the config dir with version number suffix (default: 0)
-m, --master-runtime= Path to the master Runtime API socket
-i, --show-system-info Show system info on info endpoint
Logging options:
--log-to=[stdout|file] Log target, can be stdout or file (default: stdout)
--log-file= Location of the log file (default: /var/log/dataplaneapi/dataplaneapi.log)
--log-level=[trace|debug|info|warning|error] Logging level (default: warning)
--log-format=[text|JSON] Logging format (default: text)
Show version:
-v, --version Version and build information
Help Options:
-h, --help Show this help message
- 普通方式
./dataplaneapi --port 5555 -b /usr/sbin/haproxy -c /etc/haproxy/haproxy.cfg -d 5 -r "service haproxy reload" -s "service haproxy restart" -u dataplaneapi -t /tmp/haproxy
- 容器方式
./dataplaneapi --host 0.0.0.0 --port 5555 --haproxy-bin /usr/sbin/haproxy --config-file /etc/haproxy/haproxy.cfg --reload-cmd "kill -SIGUSR2 1" --reload-delay 5 --userlist controller
- api 请求方式
curl -u <user>:<pass> -H "Content-Type: application/json" "http://127.0.0.1:5555/v1/"
- haproxy 2.0 的process manager
program api command dataplaneapi --host 0.0.0.0 --port 5555 --haproxy-bin /usr/sbin/haproxy --config-file /etc/haproxy/haproxy.cfg --reload-cmd "systemctl reload haproxy" --reload-delay 5 --userlist controller
haproxy2.0 的扩展能力还是很不错的，而且源码在github 开放的，后续基于docker 运行下dataplaneapi，试用下功能
https://www.haproxy.com/documentation/hapee/1-9r1/configuration/dataplaneapi/
https://github.com/haproxytech/dataplaneapi
来源：博客园
作者：荣锋亮
链接：https://www.cnblogs.com/rongfengliang/p/11440873.html