CentOs 6，Php7.1，libevent，Nginx返回502 [英] CentOs 6, Php7.1, libevent, nginx returns 502

问题描述

我正在将laravel Web应用程序从php5.6升级到php7.1，这使我升级了libevent模块.应用程序是基于React库的异步响应.

I am upgrading laravel web application from php5.6 to php7.1 which leads me to upgrading libevent module. Application is async ans based on react library.

所以我结束了安装:PHP 7.1.12，libevent:2.1.8 + expressif/pecl-event-libevent.而且我有稳定的"502错误网关"来自nginx.没有libevent(ReactStreamLoop)或PHP 5.6 + libevent:1.4都可以正常工作.请求登陆到index.php，稍后在启动应用程序内部发生某些事情.

So I ended with installed: PHP 7.1.12, libevent: 2.1.8 + expressif/pecl-event-libevent. And I have stable "502 Bad Gateway" from nginx. Without libevent (ReactStreamLoop) or on PHP 5.6 + libevent:1.4 works fine. Request lands to index.php and something happens later, inside of starting application.

nginx日志:

2017/11/24 10:41:24 [错误] 24985#0:* 7 recv()失败(104:对等重置连接)，同时从上游读取响应标头，客户端:14.183.16.180，服务器:173.199.117.122，请求:"GET/HTTP/1.1"，上游:"fastcgi://127.0.0.1:9000"，主机:"173.199.117.122"

2017/11/24 10:41:24 [error] 24985#0: *7 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 14.183.16.180, server: 173.199.117.122, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "173.199.117.122"

2017/11/24 10:41:25 [错误] 24985#0:* 7 recv()失败(104:对等连接重置)，同时从上游读取响应头，客户端:14.183.16.180，服务器:173.199.117.122，请求:"GET/HTTP/1.1"，上游:"fastcgi://127.0.0.1:9000"，主机:"173.199.117.122"

2017/11/24 10:41:25 [error] 24985#0: *7 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 14.183.16.180, server: 173.199.117.122, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "173.199.117.122"

php-fpm日志:

php-fpm log:

[24-Nov-2017 10:41:24]警告:[池www]子项22300在启动39.486978秒后退出信号11(SIGSEGV)

[24-Nov-2017 10:41:24] WARNING: [pool www] child 22300 exited on signal 11 (SIGSEGV) after 39.486978 seconds from start

[2017年11月24日10:41:24]注意:[pool www]子代22331已启动

[24-Nov-2017 10:41:24] NOTICE: [pool www] child 22331 started

[2017年11月24日10:41:25]警告:[池www]子项22301在启动40.205103秒后退出信号11(SIGSEGV)

[24-Nov-2017 10:41:25] WARNING: [pool www] child 22301 exited on signal 11 (SIGSEGV) after 40.205103 seconds from start

[2017年11月24日10:41:25]注意:[pool www]子代22332已启动

[24-Nov-2017 10:41:25] NOTICE: [pool www] child 22332 started

更新:如果强制使用ReactStreamLoop，则可以使用.

UPDATE: works if force usage ReactStreamLoop.

更新:在类似的配置上本地复制.找到了这样的示例，该示例与LibEventLoop一起崩溃，但与StreamSelectLoop一起工作.

UPDATE: Reproduced locally on similar config. Found such example that crashes with LibEventLoop but works with StreamSelectLoop.

require_once __DIR__.'/../vendor/autoload.php';

$loop = new \React\EventLoop\LibEventLoop();
//$loop = new \React\EventLoop\StreamSelectLoop();

$config = array(
    'host'      => '127.0.0.1',
    'port'      => '3306',
    'dbname'    => 'mysql',
    'user'      => 'root',
    'passwd'    => 'root',
    'charset'   => 'utf8',
);

$client = new \React\MySQL\Connection($loop, $config);

$client->connect(function() {});

$client->query('select 8 as cnt', function () {
    echo "inside\n";
});

echo "start\n";
$loop->run();

输出:

#php ./tests/test.php 
start
Segmentation fault (core dumped)

推荐答案

您使用的扩展名与PHP 7及更高版本不兼容.您必须使用其他事件循环实现之一，例如基于 stream_select()的事件实现或受支持的扩展之一.

The extension you're using is not compatible with PHP 7 and up. You have to use one of the other event loop implementations, such as the one based on stream_select() or one of the supported extensions.

请参见 https://github.com/reactphp/event-loop/pull/62 了解更多信息.

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