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Nginx 如何禁用 fastcgi 重试

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Nginx 如何禁用 fastcgi 重试

如何禁用 fastcgi 的任何重试？

我已经设定：

fastcgi_next_upstream off;
fastcgi_next_upstream_tries 1;

在 nginx 配置中。

以下是一些 nginx 日志：

php_1  | 172.20.0.2 -  28/May/2018:10:07:56 +0000 "GET /index.php" 200
web_1  | 172.20.0.1 - - [28/May/2018:10:07:58 +0000] "GET / HTTP/1.1" 200 18 "-" "Mozilla/5.0 (pc-x86_64-linux-gnu) Siege/4.0.4"
php_1  | [28-May-2018 10:07:58.106908] DEBUG: pid 1, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 5 active children, 0 spare children, 5 running children. Spawning rate 1
php_1  | 172.20.0.2 -  28/May/2018:10:07:57 +0000 "GET /index.php" 200
web_1  | 172.20.0.1 - - [28/May/2018:10:07:59 +0000] "GET / HTTP/1.1" 200 18 "-" "Mozilla/5.0 (pc-x86_64-linux-gnu) Siege/4.0.4"
php_1  | [28-May-2018 10:07:59.108072] DEBUG: pid 1, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 5 active children, 0 spare children, 5 running children. Spawning rate 1
php_1  | 172.20.0.2 -  28/May/2018:10:07:57 +0000 "GET /index.php" 200
php_1  | 172.20.0.2 -  28/May/2018:10:07:57 +0000 "GET /index.php" 200
php_1  | 172.20.0.2 -  28/May/2018:10:07:57 +0000 "GET /index.php" 200
web_1  | 172.20.0.1 - - [28/May/2018:10:07:59 +0000] "GET / HTTP/1.1" 200 18 "-" "Mozilla/5.0 (pc-x86_64-linux-gnu) Siege/4.0.4"
web_1  | 172.20.0.1 - - [28/May/2018:10:07:59 +0000] "GET / HTTP/1.1" 200 18 "-" "Mozilla/5.0 (pc-x86_64-linux-gnu) Siege/4.0.4"
web_1  | 172.20.0.1 - - [28/May/2018:10:07:59 +0000] "GET / HTTP/1.1" 200 18 "-" "Mozilla/5.0 (pc-x86_64-linux-gnu) Siege/4.0.4"
php_1  | 172.20.0.2 -  28/May/2018:10:07:58 +0000 "GET /index.php" 200
web_1  | 172.20.0.1 - - [28/May/2018:10:08:00 +0000] "GET / HTTP/1.1" 200 18 "-" "Mozilla/5.0 (pc-x86_64-linux-gnu) Siege/4.0.4"
php_1  | [28-May-2018 10:08:00.109179] DEBUG: pid 1, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 5 active children, 0 spare children, 5 running children. Spawning rate 1

以下是来自 siege http 负载测试工具的一些结果：

Transactions:                114 hits
Availability:              88.37 %
Elapsed time:              79.02 secs
Data transferred:           0.00 MB
Response time:             51.59 secs
Transaction rate:           1.44 trans/sec
Throughput:             0.00 MB/sec
Concurrency:               74.43
Successful transactions:         114
Failed transactions:              15
Longest transaction:           61.11
Shortest transaction:          28.07

后端是一个max_children设置为 5 的 php-fpm 服务 - 因此它最多可以同时处理 5 个请求。但是，如果请求失败，nginx 似乎会“重试”该请求（因为它达到了高于 5 的并发量 - 如围攻结果中所示）。

具有上述行为的完整 docker 项目可以在这里找到：https://github.com/chrissound/phpfpmmaxchildrentest/

答案1

我必须将listen.backlog其设置为 0，php-fpm因为它似乎有一个请求队列。虽然这似乎不能完全发挥作用（尽管确实有一些效果）：一旦达到其容量上限，如何强制 fastcgi / php-fpm 拒绝连接？

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