I am having troubles with a wordpress plugin running a full batch of imports. I get this error when I enable the nginx debug. The result is I get an immediate 404 error afterwards and I am unable to fully import my data.

I am pretty sure this is a bug, but I can't find the right answer to fix it.

Please Help.

**What I have done so far:**

- It looked like a nginx bug and my nginx version was old, so I upgraded. No change.
- It looked and still looks like it could be related to php-fpm. I've upgraded. No change.
- I've disabled all of my plugins. No Change.

**Server**

- CentOS 6.0
- nginx v 1.0.15
- PHP-FPM v 5.3.3 (fpm-fcgi)
- Webserver running 3 very low traffic sites
- PHP-FPM is set to ondemmand


**PHP.ini config:**

- pm = ondemand
- pm.process_idle_timeout = 50s
- pm.max_children = 20
- pm.start_servers = 1
- pm.min_spare_servers = 3
- pm.max_spare_servers = 5
- pm.max_requests = 1024
- pm.status_path = /status



I am unable to post my logs, so please check out the comparison

**Nginx Log:**

[12-Dec-2014 06:35:49.398315] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:50.399474] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:51.400765] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:52.402053] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:53.403346] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:53.417762] DEBUG: pid 13384, fpm_got_signal(), line 72: received SIGCHLD
[12-Dec-2014 06:35:53.417836] DEBUG: pid 13384, fpm_children_bury(), line 254: [pool www] child 18327 has been killed by the process managment after 52.123053 seconds from start
[12-Dec-2014 06:35:53.417863] DEBUG: pid 13384, fpm_event_loop(), line 411: event module triggered 1 events
[12-Dec-2014 06:35:54.404978] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 0 spare children
[12-Dec-2014 06:35:54.687559] DEBUG: pid 13384, fpm_children_make(), line 421: [pool www] child 18397 started




[12-Dec-2014 06:35:54.687593] DEBUG: pid 13384, fpm_pctl_on_socket_accept(), line 536: [pool www] got accept without idle child available .... I forked
[12-Dec-2014 06:35:54.687602] DEBUG: pid 13384, fpm_event_loop(), line 411: event module triggered 1 events




[12-Dec-2014 06:35:55.406455] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:56.407633] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:57.408949] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children
[12-Dec-2014 06:35:58.410111] DEBUG: pid 13384, fpm_pctl_perform_idle_server_maintenance(), line 362: [pool www] currently 0 active children, 1 spare children



**PHP log:**

2014/12/12 06:35:02 [debug] 13350#0: *223 http header done
2014/12/12 06:35:54 [debug] 13350#0: accept on 0.0.0.0:80, ready: 1
2014/12/12 06:35:54 [debug] 13350#0: posix_memalign: 0000000002273A80:256 @16
2014/12/12 06:35:54 [debug] 13350#0: *226 accept: 66.249.67.123 fd:3
2014/12/12 06:35:54 [debug] 13350#0: *226 event timer add: 3: 60000:1418387814684
2014/12/12 06:35:54 [debug] 13350#0: *226 epoll add event: fd:3 op:1 ev:80000001
2014/12/12 06:35:54 [debug] 13350#0: accept() not ready (11: Resource temporarily unavailable)
2014/12/12 06:35:54 [debug] 13350#0: *226 malloc: 0000000002274AF0:1296
2014/12/12 06:35:54 [debug] 13350#0: *226 posix_memalign: 0000000002273BE0:256 @16
2014/12/12 06:35:54 [debug] 13350#0: *226 malloc: 000000000232F4B0:131072
2014/12/12 06:35:54 [debug] 13350#0: *226 posix_memalign: 00000000021F7590:4096 @16
2014/12/12 06:35:54 [debug] 13350#0: *226 http process request line
2014/12/12 06:35:54 [debug] 13350#0: *226 recv: fd:3 315 of 131072
2014/12/12 06:35:54 [debug] 13350#0: *226 http request line: "GET /stores/giltcity/page/78/ HTTP/1.1"
2014/12/12 06:35:54 [debug] 13350#0: *226 http uri: "/stores/giltcity/page/78/"
2014/12/12 06:35:54 [debug] 13350#0: *226 http args: ""
2014/12/12 06:35:54 [debug] 13350#0: *226 http exten: ""
2014/12/12 06:35:54 [debug] 13350#0: *226 http process request header line
2014/12/12 06:35:54 [debug] 13350#0: *226 http header: "Host: mydiscountman.com"
2014/12/12 06:35:54 [debug] 13350#0: *226 http header: "Connection: Keep-alive"
2014/12/12 06:35:54 [debug] 13350#0: *226 http header: "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
2014/12/12 06:35:54 [debug] 13350#0: *226 http header: "From: googlebot(at)googlebot.com"
2014/12/12 06:35:54 [debug] 13350#0: *226 http header: "Accept-Encoding: gzip,deflate"
2014/12/12 06:35:54 [debug] 13350#0: *226 http header: "User-Agent: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
2014/12/12 06:35:54 [debug] 13350#0: *226 http header done
2014/12/12 06:37:11 [debug] 13350#0: accept on 0.0.0.0:80, ready: 1


**Nginx Global Config /etc/nginx/nginx.conf :**

user apache;
worker_processes 1;
pid /var/run/nginx.pid;


events {
worker_connections 768;
multi_accept on;
use epoll;
}

http {

# Let NGINX get the real client IP for its access logs
set_real_ip_from 127.0.0.1;
real_ip_header X-Forwarded-For;

# Basic Settings
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 20;
client_max_body_size 15m;
client_body_timeout 60;
client_header_timeout 60;
client_body_buffer_size 128k;
client_header_buffer_size 128k;
large_client_header_buffers 4 16k;
send_timeout 60;
reset_timedout_connection on;
types_hash_max_size 8192;
server_tokens off;

# server_names_hash_bucket_size 64;
# server_name_in_redirect off;

include /etc/nginx/mime.types;
default_type application/octet-stream;

# Logging Settings
# access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log debug;

# Log Format
log_format main '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

# Gzip Settings
gzip on;
gzip_static on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_min_length 512;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/css text/javascript text/xml text/plain text/x-component
application/javascript application/x-javascript application/json
application/xml application/rss+xml font/truetype application/x-font-ttf
font/opentype application/vnd.ms-fontobject image/svg+xml;

# Virtual Host Configs
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}




**Nginx Site Config /etc/nginx/sites-available/testme :**

server {
listen 80;
server_name testme.XXXXXXX.com;

port_in_redirect off;
server_tokens off;
autoindex off;

client_max_body_size 15m;
client_body_buffer_size 128k;

access_log /var/log/nginx/testme/access_log main;
error_log /var/log/nginx/testme/error_log;

root /var/www/testme;
index index.php index.html index.htm;
try_files $uri $uri/ /index.php;

error_page 404 /404error.html;
location = /var/www/testme/404error.html {
internal;
}

error_page 500 /500error.html;
location = /var/www/testme/500error.html {
internal;
}

# Define default caching of 24h
expires 8s;
add_header Pragma public;
add_header Cache-Control "max-age=86400, public, must-revalidate, proxy-revalidate";

# Redirect server error pages to static 50x.html
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}

# Don't log robots.txt requests
location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}

location /phpmyadmin {
auth_basic "Restricted";
auth_basic_user_file /var/www/testme/phpmyadmin/.htpasswd;
try_files $uri $uri/ index.html index.php;
index index.html index.htm index.php;
location ~ /\.ht {
deny all;
}
location ~* ^.+\.(css|js)$ {
#try_files $uri $uri/;
#root /var/www/testme/phpmyadmin;
access_log off;
}
location ~ ^.+\.php {
try_files $uri $uri/ *.php;
fastcgi_split_path_info ^(.+.php)(.*)$;
fastcgi_pass unix:/var/run/php-fpm.socket;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /var/www/testme$fastcgi_script_name;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
include /etc/nginx/fastcgi_params;
fastcgi_intercept_errors on;
fastcgi_ignore_client_abort off;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;

}
}

# Rewrite for versioned CSS+JS via filemtime
# location ~* ^.+\.(css|js) {
# rewrite ^(.+)\.(\d+)\.(css|js)$ $1.$3 last;
# expires 31536000s;
# access_log on;
# log_not_found on;
# add_header Pragma public;
# add_header Cache-Control "max-age=31536000, public";
# }

# Aggressive caching for static files
# If you alter static files often, please use
# add_header Cache-Control "max-age=31536000, public, must-revalidate, proxy-revalidate";
location ~* \. (asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|eot|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|odb|odc|odf|odg|odp|ods|odt|ogg|ogv|otf|pdf|png|pot|pps|ppt|pptx|ra|ram|svg|svgz|swf|tar|t?gz|tif|tiff|ttf|wav|webm|wma|woff|wri|xla|xls|xlsx|xlt|xlw|zip)$ {
expires 31536000s;
access_log on;
log_not_found on;
add_header Pragma public;
add_header Cache-Control "max-age=31536000, public";
}


location ~* (^(?!(?:(?!(php|inc)).)*/uploads/).*?(php)) {
set $php_root $document_root;
if ($request_uri ~* /phpmyadmin) {
#set $php_root /usr/share;
}

try_files $uri = 404;
fastcgi_split_path_info ^(.+.php)(.*)$;
fastcgi_pass unix:/var/run/php-fpm.socket;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $php_root$fastcgi_script_name;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
include /etc/nginx/fastcgi_params;
fastcgi_intercept_errors on;
fastcgi_ignore_client_abort off;
fastcgi_connect_timeout 3600;
fastcgi_send_timeout 3600;
fastcgi_read_timeout 3600;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
}

}