nginx负载均衡配置

这里使用本机模拟负载均衡

nginx 配置如下 [这里使用本地2个端口来模拟两台机器]

upstream web001 {
    server 127.0.0.1:9501;
    server 127.0.0.1:9502;
}
server {
        listen 80;
        server_name upstream.localhost.com;
        location / {
                proxy_pass http://web001;
        }
}

9501，9502 两个服务，我们用swoole来模拟，代码分别为

http1.php
<?php
$http = new swoole_http_server("127.0.0.1", 9501);

$http->on("start", function ($server) {
    echo "Swoole http server is started at http://127.0.0.1:9501\n";
});

$http->on("request", function ($request, $response) {
    $response->header("Content-Type", "text/plain");
    $response->end("Hello World this is 9501 \n");
});

$http->start();

http2.php
<?php
$http = new swoole_http_server("127.0.0.1", 9502);

$http->on("start", function ($server) {
    echo "Swoole http server is started at http://127.0.0.1:9502\n";
});

$http->on("request", function ($request, $response) {
    $response->header("Content-Type", "text/plain");
    $response->end("Hello World this is 9502 \n");
});

$http->start();

启动两个服务

php http1.php
Swoole http server is started at http://127.0.0.1:9502
php http2.php
Swoole http server is started at http://127.0.0.1:9502

curl 请求 upstream.localhost.com 你就会发现9501和9502进行切换

➜  ~ curl http://upstream.localhost.com
Hello World this is 9502
➜  ~ curl http://upstream.localhost.com
Hello World this is 9501
➜  ~ curl http://upstream.localhost.com
Hello World this is 9502
➜  ~ curl http://upstream.localhost.com
Hello World this is 9501