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This article mainly introduces how haproxy acts as hive, which has certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.

Global

Daemon

Nbproc 1

Pidfile / var/run/haproxy.pid

Ulimit-n 65535

Defaults

Mode tcp # mode {tcp | http | health}, tcp represents layer 4, http represents layer 7, and health is only used for health check

Retries 2 # is removed from the cluster if it fails 2 times.

Option redispatch # forcibly convert other servers if it fails

Option abortonclose # automatically shuts down if the number of connections is too large

Maxconn 1024 # maximum connections

Timeout connect 1d # connection timeout, important, guarantee that hive query data can return results

Timeout client 1D # ditto

Timeout server 1D # ditto

Timeout check 2000 # Health check time

Log 127.0.0.1 local0 err # [err warning info debug]

Listen admin_stats # defines the management interface

Bind 0.0.0.0 1090 # Administrative Interface accesses IP and Port

Protocols used by the mode http # management interface

Maxconn 10 # maximum number of connections

Stats refresh 30s # 30 seconds automatic refresh

Stats uri / # visit url

Stats realm Hive\ Haproxy # Verification window prompt

Stats auth admin:123456 # 401 verify username and password

Listen hive # hive backend definition

Bind 0.0.0.0 IP and port bound by proxy 10001 # ha

Mode tcp # proxies in a 4-tier manner, important

Balance leastconn # scheduling algorithm 'leastconn' minimum connection allocation, or' roundrobin', polling allocation

Maxconn 1024 # maximum connections

Server hive_1 192.168.1.1:10000 check inter 180000 rise 1 fall 2

Server hive_2 192.168.1.2:10000 check inter 180000 rise 1 fall 2

# interpretation: server host name (as long as you can read it yourself), IP: the port is checked every 180000 milliseconds. That's three minutes.

# hive creates a log for every request with port 10000. If the setting is too short, there will be countless log files under / tmp, which cannot be deleted.

Haproxy-f conf.cfg

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