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)