概述

Nginx能够实现HTTP、HTTPS协议的负载均衡，也能够实现TCP协议的负载均衡。那么，问题来了，可不可以通过Nginx实现Apache Doris数据库的负载均衡呢？答案是：可以。接下来，就让我们一起探讨下如何使用Nginx实现Apache Doris的负载均衡。

环境准备

注意：使用Nginx实现Apache Doris数据库的负载均衡，前提是要搭建Apache Doris的环境，Apache Doris FE的IP和端口分别如下所示, 这里我是用一个FE来做演示的，多个FE只需要在配置里添加多个FE的IP地址和端口即可

IP: 172.31.7.119

端口: 9030

通过Nginx访问MySQL的Apache Doris和端口如下所示。

IP : 172.31.7.119

端口：6030

安装依赖

sudo apt-get install build-essential

sudo apt-get install libpcre3 libpcre3-dev

sudo apt-get install zlib1g-dev

sudo apt-get install openssl libssl-dev

安装Nginx

sudo wget http://nginx.org/download/nginx-1.18.0.tar.gz

sudo tar zxvf nginx-1.18.0.tar.gz

cd nginx-1.18.0

sudo ./configure --prefix=/usr/local/nginx --with-stream --with-http_ssl_module --with-http_gzip_static_module --with-http_stub_status_module

sudo make && make install

配置反向代理

我这里是新建了一个配置文件

vim /usr/local/nginx/conf/default.conf

然后再里面加上下面的内容

events {

worker_connections 1024;

}

stream {

upstream mysqld {

hash $remote_addr consistent;

server 172.31.7.119:9030 weight=1 max_fails=2 fail_timeout=60s;

##注意这里如果是多个FE，加载这里就行了

}

###这里是配置代理的端口，超时时间等

server {

listen 6030;

proxy_connect_timeout 30s;

proxy_timeout 30s;

proxy_pass mysqld;

}

}

启动Nginx

指定配置文件启动

cd /usr/local/nginx

/usr/local/nginx/sbin/nginx -c conf.d/default.conf

验证

mysql -uroot -P6030 -h172.31.7.119

参数解释:

-u 指定Doris用户名

-p 指定Doris密码,我这里密码是空，所以没有

-h 指定Nginx代理服务器IP

-P 指定端口

mysql -uroot -P6030 -h172.31.7.119

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 13

Server version: 5.1.0 Doris version 0.15.1-rc09-Unknown

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;

+--------------------+

| Database |

+--------------------+

| information_schema |

| test |

+--------------------+

2 rows in set (0.00 sec)

mysql> use test;

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> show tables;

+------------------+

| Tables_in_test |

+------------------+

| dwd_product_live |

+------------------+

1 row in set (0.00 sec)

mysql> desc dwd_product_live;

+-----------------+---------------+------+-------+---------+---------+

| Field | Type | Null | Key | Default | Extra |

+-----------------+---------------+------+-------+---------+---------+

| dt | DATE | Yes | true | NULL | |

| proId | BIGINT | Yes | true | NULL | |

| authorId | BIGINT | Yes | true | NULL | |

| roomId | BIGINT | Yes | true | NULL | |

| proTitle | VARCHAR(1024) | Yes | false | NULL | REPLACE |

| proLogo | VARCHAR(1024) | Yes | false | NULL | REPLACE |

| shopId | BIGINT | Yes | false | NULL | REPLACE |

| shopTitle | VARCHAR(1024) | Yes | false | NULL | REPLACE |

| profrom | INT | Yes | false | NULL | REPLACE |

| proCategory | BIGINT | Yes | false | NULL | REPLACE |

| proPrice | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| couponPrice | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| livePrice | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| volume | BIGINT | Yes | false | NULL | REPLACE |

| addedTime | BIGINT | Yes | false | NULL | REPLACE |

| offTimeUnix | BIGINT | Yes | false | NULL | REPLACE |

| offTime | BIGINT | Yes | false | NULL | REPLACE |

| createTime | BIGINT | Yes | false | NULL | REPLACE |

| createTimeUnix | BIGINT | Yes | false | NULL | REPLACE |

| amount | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| views | BIGINT | Yes | false | NULL | REPLACE |

| commissionPrice | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| proCostPrice | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| proCode | VARCHAR(1024) | Yes | false | NULL | REPLACE |

| proStatus | INT | Yes | false | NULL | REPLACE |

| status | INT | Yes | false | NULL | REPLACE |

| maxPrice | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| liveView | BIGINT | Yes | false | NULL | REPLACE |

| firstCategory | BIGINT | Yes | false | NULL | REPLACE |

| secondCategory | BIGINT | Yes | false | NULL | REPLACE |

| thirdCategory | BIGINT | Yes | false | NULL | REPLACE |

| fourCategory | BIGINT | Yes | false | NULL | REPLACE |

| minPrice | DECIMAL(18,2) | Yes | false | NULL | REPLACE |

| liveVolume | BIGINT | Yes | false | NULL | REPLACE |

| liveClick | BIGINT | Yes | false | NULL | REPLACE |

| extensionId | VARCHAR(128) | Yes | false | NULL | REPLACE |

| beginTime | BIGINT | Yes | false | NULL | REPLACE |

| roomTitle | TEXT | Yes | false | NULL | REPLACE |

| beginTimeUnix | BIGINT | Yes | false | NULL | REPLACE |

| nickname | TEXT | Yes | false | NULL | REPLACE |

+-----------------+---------------+------+-------+---------+---------+

40 rows in set (0.06 sec)