php-fpm interview questions
Top php-fpm frequently asked interview questions
I have Fedora 16 with nginx and php-fpm. Everything is working very good. All logs with php notice,warnig error etc. are in /var/log/php-fpm/www-error.log. Is there a way to configure php-fpm to write errors in proper log files configured as error logs for nginx ? So I want to logs php errors per virtualhost not in one global file. (like in apache and php).
Source: (StackOverflow)
I have Nginx+php5-fpm. Several times per hour my website stucks and in logfile I see the following:
WARNING: [pool www] server reached pm.max_children setting (5),
consider raising it.
/etc/php5/fpm/pool.d/www.conf file contains the following configuration:
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3
Server:
AMD Opteron™ 3280, Octo-Core, 8x 2.4 GHz, 16 GB DIMM (DDR3).
I have no idea what numbers should I put in www.conf file for this server. Can me help somebody? Thanks
Source: (StackOverflow)
I have a strange problem here. I just moved from apache + mod_php to nginx + php-fpm. Everything went fine except this one problem.
I have a site, let's say example.com. When I access it like example.com?test=get_param $_SERVER['REQUEST_URI'] is /?test=get_param and there is a $_GET['test'] also.
But when I access example.com/ajax/search/?search=get_param $_SERVER['REQUEST_URI'] is /ajax/search/?search=get_param yet there is no $_GET['search'] (there is no $_GET array at all).
I'm using Kohana framework. which routes /ajax/search to controller, but I've put phpinfo() at index.php so I'm checking for $_GET variables before framework does anything (this means that disapearing get params aren't frameworks fault).
My nginx.conf is like this
worker_processes 4;
pid logs/nginx.pid;
events {
worker_connections 1024;
}
http {
index index.html index.php;
autoindex on;
autoindex_exact_size off;
include mime.types;
default_type application/octet-stream;
server_names_hash_bucket_size 128;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log logs/access.log main;
error_log logs/error.log debug;
sendfile on;
tcp_nopush on;
tcp_nodelay off;
keepalive_timeout 2;
gzip on;
gzip_comp_level 2;
gzip_proxied any;
gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;
include sites-enabled/*;
}
and example.conf is like this
server {
listen 80;
server_name www.example.com;
rewrite ^ $scheme://example.com$request_uri? permanent;
}
server {
listen 80;
server_name example.com;
root /var/www/example/;
location ~ /\. {
return 404;
}
location / {
try_files $uri $uri/ /index.php;
}
location ~ \.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include /usr/local/nginx/conf/fastcgi_params;
}
location ~* ^/(modules|application|system) {
return 403;
}
# serve static files directly
location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt)$ {
access_log off;
expires 30d;
}
}
fastcgi_params is like this
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param REDIRECT_STATUS 200;
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;
fastcgi_intercept_errors on;
fastcgi_param QUERY_STRING $query_string;
fastcgi_param PATH_INFO $fastcgi_path_info;
What is the problem here?
By the way there are few more sites on the same server, both Kohana based and plain php, that are working perfectly.
Source: (StackOverflow)
After debugging for 6-hours - I am giving this up :|
We have a nginx+php-fpm+mysql in LAN with almost 100 wordpress (created and used by different designers/developers all working on test wordpres setup)
We are using nginx without any issues from long.
Today, all of a sudden - nginx started returning "504 Gateway Time-out" out of the blue...
I checked nginx error log for a virtual host...
2010/09/06 21:24:24 [error] 12909#0: *349 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /favicon.ico HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 21:25:11 [error] 12909#0: *349 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /favicon.ico HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 21:25:11 [error] 12909#0: *443 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /info.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 21:25:12 [error] 12909#0: *443 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /favicon.ico HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 22:08:32 [error] 12909#0: *1025 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 22:09:33 [error] 12909#0: *1025 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /favicon.ico HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 22:09:40 [error] 12909#0: *1064 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /info.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 22:09:40 [error] 12909#0: *1064 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /favicon.ico HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 22:24:44 [error] 12909#0: *1313 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
2010/09/06 22:24:53 [error] 12909#0: *1313 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 192.168.0.1, server: rahul286.rtcamp.info, request: "GET /favicon.ico HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "rahul286.rtcamp.info"
As I run php-fpm on port 9000 via TCP mode, I ran "netstat | grep 9000" and noticed something unusual...
(Pasting partial output here for ease of read)
tcp 9 0 localhost:9000 localhost:36094 CLOSE_WAIT 14269/php5-fpm
tcp 0 0 localhost:46664 localhost:9000 FIN_WAIT2 -
tcp 1257 0 localhost:9000 localhost:36135 CLOSE_WAIT -
tcp 1257 0 localhost:9000 localhost:36125 CLOSE_WAIT -
tcp 9 0 localhost:9000 localhost:36102 CLOSE_WAIT 14268/php5-fpm
tcp 0 0 localhost:46662 localhost:9000 FIN_WAIT2 -
tcp 745 0 localhost:9000 localhost:46644 CLOSE_WAIT -
tcp 0 0 localhost:46658 localhost:9000 FIN_WAIT2 -
tcp 1265 0 localhost:9000 localhost:46607 CLOSE_WAIT -
tcp 0 0 localhost:46672 localhost:9000 ESTABLISHED 12909/nginx: worker
tcp 1257 0 localhost:9000 localhost:36119 CLOSE_WAIT -
tcp 1265 0 localhost:9000 localhost:46613 CLOSE_WAIT -
tcp 0 0 localhost:46646 localhost:9000 FIN_WAIT2 -
tcp 1257 0 localhost:9000 localhost:36137 CLOSE_WAIT -
tcp 0 0 localhost:46670 localhost:9000 ESTABLISHED 12909/nginx: worker
tcp 1265 0 localhost:9000 localhost:46619 CLOSE_WAIT -
tcp 1336 0 localhost:9000 localhost:46668 ESTABLISHED -
tcp 0 0 localhost:46648 localhost:9000 FIN_WAIT2 -
tcp 1336 0 localhost:9000 localhost:46670 ESTABLISHED -
tcp 9 0 localhost:9000 localhost:36108 CLOSE_WAIT 14274/php5-fpm
tcp 1336 0 localhost:9000 localhost:46684 ESTABLISHED -
tcp 0 0 localhost:46674 localhost:9000 ESTABLISHED 12909/nginx: worker
tcp 1336 0 localhost:9000 localhost:46666 ESTABLISHED -
tcp 1257 0 localhost:9000 localhost:46648 CLOSE_WAIT -
tcp 1336 0 localhost:9000 localhost:46678 ESTABLISHED -
tcp 0 0 localhost:46668 localhost:9000 ESTABLISHED 12909/nginx: wo
There are plenty of "CLOSE_WAIT" & "FIN_WAIT2" pairs as highlighted below (in above output):
tcp 1337 0 localhost:9000 localhost:46680 CLOSE_WAIT -
tcp 0 0 localhost:46680 localhost:9000 FIN_WAIT2 -
Please note port 46680 in above.
I enabled mysql slow queries error log, but it didn't work.
As of now restarting php5-fpm every minute via a cronjob (see command below) keeping everything running "smoothly" but I hate patchwork and want to solve this...
1 * * * * service php5-fpm restart > /dev/null
I searched extensively on Google - got no help.
As mentioned, this a test-server in LAN, CPU load is never crossed 0.10 and memory usage is also below 25% (System has 2GB RAM and ubuntu-server installed)
So if you find its time-confusing to help me out, please atleast drop a hint.
Thanks in advance for help.
-Rahul
(note - this is reposting of - http://forum.nginx.org/read.php?11,127694)
Update: I found answer, which is posted below.
Source: (StackOverflow)
There has been a lot of talking about a security issue relative to the cgi.fix_pathinfo PHP option used with Nginx (usually PHP-FPM, fast CGI).
As a result, the default nginx configuration file used to say:
# NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
However, now, the "official" Nginx wiki states that PATH_INFO can be handled correctly without disabling the above PHP option. So what?
Questions
- Can you explain clearly what does
cgi.fix_pathinfo do? (official doc just says: "For more information on PATH_INFO, see the CGI specs")
- What will PHP really do with these
PATH_INFO and SCRIPT_FILENAME variables?
- Why and how can it be dangerous with Nginx? (detailed examples)
- Does the issue still exist in recent versions of these programs?
- Is Apache vulnerable?
I'm trying to understand the issue at each step. For example, I don't understand why using the php-fpm Unix socket could avoid this problem.
Source: (StackOverflow)
I am setting up php-fpm with chrooting enabled. Now I see that there are two options, and I want to know what the exact difference is.
The setup has:
chroot = /var/www/domains/domain.tld/
; Chdir to this directory at the start. This value must be an absolute path.
; Default Value: current directory or / when chroot
chdir = /docroot/
Why are there two different locations here, and which path is php allowed to access. Can the php website access /var/www/domains/domain.tld/, or can it only access files withing the docroot directory.
===
Maybe there is some concrete advice for me. I want to have a setup like this:
webroot location: /var/www/
domain.com/
|---conf/
| |--nginx.conf
| |--php-fpm.conf
|
|---ssl/
|---logs/
|---session/
|---domains/
|---www/
|---app/
|---dev/
Now here the php-fpm settings would be:
chroot = /var/www/domain.com/
chdir = /domains/www
Now the main question here is, will the application located in the www subdomain be able to access the files in dev or app. Or even the files located in session, which is the session save path, or the other folders such as ssl and logs.
Source: (StackOverflow)
Good day.
While this post discusses a similar setup to mine serving blank pages occasionally after having made a successful installation, I am unable to serve anything but blank pages. There are no errors present in /var/log/nginx/error.log, /var/log/php-fpm.log or /var/log/nginx/us/sharonrhodes/blog/error.log.
My setup:
- Wordpress 3.0.4
- nginx 0.8.54
- php-fpm 5.3.5 (fpm-fcgi)
- Arch Linux
Configuration Files
php-fpm.conf:
[global]
pid = run/php-fpm/php-fpm.pid
error_log = log/php-fpm.log
log_level = notice
[www]
listen = 127.0.0.1:9000
listen.owner = www
listen.group = www
listen.mode = 0660
user = www
group = www
pm = dynamic
pm.max_children = 50
pm.start_servers = 20
pm.min_spare_servers = 5
pm.max_spare_servers = 35
pm.max_requests = 500
nginx.conf:
user www;
worker_processes 1;
error_log /var/log/nginx/error.log notice;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
gzip on;
include /etc/nginx/sites-enabled/*.conf;
}
/etc/nginx/sites-enabled/blog_sharonrhodes_us.conf:
upstream php {
server 127.0.0.1:9000;
}
server {
error_log /var/log/nginx/us/sharonrhodes/blog/error.log notice;
access_log /var/log/nginx/us/sharonrhodes/blog/access.log;
server_name blog.sharonrhodes.us;
root /srv/apps/us/sharonrhodes/blog;
index index.php;
location = /favicon.ico {
log_not_found off;
access_log off;
}
location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}
location / {
# This is cool because no php is touched for static content
try_files $uri $uri/ /index.php?q=$uri&$args;
}
location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
#NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
include fastcgi_params;
fastcgi_intercept_errors on;
fastcgi_pass php;
}
location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
expires max;
log_not_found off;
}
}
/etc/nginx/conf/fastcgi.conf:
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param REDIRECT_STATUS 200;
Source: (StackOverflow)
I'm in the process of migrating many sites from an old to a new server configuration. Each site is based on a similar (but sadly not identical) codebase, using mod_rewrite URLs.
- Ubuntu 8.04 LTS => Ubuntu 12.04 LTS
- Apache 2.22.8 => Apache 2.2.22
- PHP 5.2 (FastCGI) => PHP 5.3 (PHP5-FPM)
Mostly working like a charm, but on the new config the $_SERVER['REDIRECT_URL'] is no longer set, and the code is failing due to a dependence on this global variable.
From what I understand, this variable gets set by Apache when a redirect occurs. Obviously this isn't happening now, but I'm struggling to find the cause.
- Is it the Apache upgrade, or (my guess) the switch from PHP FastCGI to PHP5-FPM?
- How do I get this variable back?
I'd really rather not have to edit the code on each site, so I'll set a global PHP auto_prepend if necessary, but ideally I'd like to fix the server configuration and have this set in the first place.
Potentially related: I now also have a couple of new $_SERVER variables, namely REDIRECT_SCRIPT_URL and REDIRECT_REDIRECT_SCRIPT_URL. These seem to have the correct data I want for the REDIRECT_URL, but also seem to indicate there's two internal redirects occurring that weren't before - Google searches for REDIRECT_REDIRECT_SCRIPT_URL only returns random var_dump outputs. Is SCRIPT_URL the new REDIRECT_URL?
Edit 1
Checking again REDIRECT_URL is (now) set, but always to 'index.php' (the mod_rewrite target) instead of the expected typed URL. I have resorted to a using PHP auto_prepend_file to manually set the needed variable.
I'm not sure how I missed it the first time round, but I've made several changes in the meantime so I suppose there's an outside chance it wasn't there. Apologies if this mislead anyone.
Edit 2
To address the mentions of ErrorDocument below, the mod_rewrite rule in use is:
RewriteRule ^(.*)$ /index.php?url=$1 [QSA,L]
The $_GET['url'] variable is set, so the rule must be working.
To be clear, at this stage I've gone with the auto_prepend_file workaround I mentioned initially.
Source: (StackOverflow)
I keep running into errors like these,
[02-Jun-2012 01:52:04] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 19 idle, and 49 total children
[02-Jun-2012 01:52:05] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 19 idle, and 50 total children
[02-Jun-2012 01:52:06] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 19 idle, and 51 total children
[02-Jun-2012 03:10:51] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 18 idle, and 91 total children
I changed my settings for php-fpm to these,
pm.max_children = 150 (It was at 100, i got a max_children reached and upped to 150)
pm.start_servers = 75
pm.min_spare_servers = 20
pm.max_spare_servers = 150
Resulting in
[02-Jun-2012 01:39:19] WARNING: [pool www] server reached pm.max_children setting (150), consider raising it
I've just launched a new website that is getting a conciderable amount of traffic on it. This traffic is legitimate and users are getting 504 gateway timeouts when the limit is reached.
I have limited connections to my server with IPTABLES and I'm running fail2ban and keeping track of nginx access logs. The traffic is all legitimate, i'm just running out of room for users.
I'm currently running on a dual core box with ubuntu 64bit.
free
total used free shared buffers cached
Mem: 6114284 5726984 387300 0 141612 4985384
-/+ buffers/cache: 599988 5514296
Swap: 524284 5804 518480
My php.ini max_input_time = 60
My nginx config is
worker_processes 4;
pid /var/run/nginx.pid;
events {
worker_connections 19000;
# multi_accept on;
}
worker_rlimit_nofile 20000; #each connection needs a filehandle (or 2 if you are proxying)
client_max_body_size 30M;
client_body_timeout 10;
client_header_timeout 10;
keepalive_timeout 5 5;
send_timeout 10;
location ~ \.php$ {
try_files $uri /er/error.php;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 128k;
fastcgi_buffers 256 16k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_max_temp_file_size 0;
fastcgi_intercept_errors on;
fastcgi_pass unix:/tmp/php5-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
}
What can I do to stop running out of connections? Why does this keep occurring? I'm monitoring my traffic on Google Analytics realtime and when the user count gets above about 120 my php-fpm.log is full of these warnings..
Source: (StackOverflow)
I have a 64-bit server but only 256MB of RAM. So, I moved to nginx server with fast-cgi to connect to PHP. I have PHP 5.3.6 running.
The issue is that after every two or three days when I try to access any PHP page then I get server internal error. The only way around is to restart php-fpm manually. This means I should have set some wrong parameters which is causing it to choke. Below I have listed the relevant configs.
/etc/php-fpm.conf :-
include=/etc/php-fpm.d/*.conf
log_level = error
;emergency_restart_threshold = 0
;emergency_restart_interval = 0
;process_control_timeout = 0
/etc/php-fpm.d/www.conf :-
[www]
pm = dynamic
pm.max_children = 10
pm.start_servers = 3
pm.min_spare_servers = 2
pm.max_spare_servers = 5
pm.max_requests = 500
/etc/nginx/php.conf :-
location ~ \.php {
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
fastcgi_pass unix:---some-location---;
}
Update 1
And I have four nginx processes running. On an average each php-fpm process takes 35MB of RAM (Virtual memory size 320MB each). I also have a MySql process running.
Update 2
I forgot to paste the logs.
php-fpm error log :-
WARNING: [pool www] seems busy (you may need to increase start_servers, or min/max_spare_servers), spawning 8 children, there are 1 idle, and 7 total children
WARNING: [pool www] server reached max_children setting (10), consider raising it
NOTICE: Terminating ...
php-fpm www.error log :-
PHP Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 122880 bytes) in /home/webadmin/blog.applegrew.com/html/wordpress/wp-content/plugins/jetpack/class.jetpack-signature.php on line 137
PHP Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 122880 bytes) in /home/webadmin/blog.applegrew.com/html/wordpress/wp-content/plugins/jetpack/class.jetpack-signature.php on line 137
PHP Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 122880 bytes) in /home/webadmin/blog.applegrew.com/html/wordpress/wp-content/plugins/jetpack/class.jetpack-signature.php on line 137
Source: (StackOverflow)
I'm trying to figure out where the PHP errors are going in my setup. I'm running nginx as the reverse proxy to PHP-FPM, but I'm not seeing the various E_NOTICE or E_WARNING messages my app is producing. The only reason I know they're happening is failed responses and NewRelic catching stack traces.
Here's the logging config:
nginx.conf
proxy_intercept_errors on;
fastcgi_intercept_errors on;
php.ini
error_reporting = E_ALL
display_errors = Off
display_startup_errors = Off
log_errors = On
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
track_errors = On
error_log = syslog
php-fpm.conf
[global]
error_log = /var/log/php-fpm/fpm-error.log
[www]
access.log = /var/log/php-fpm/access.log
access.format = "%t \"%m %r%Q%q\" %s %{mili}dms %{kilo}Mkb %C%%"
catch_workers_output = yes
php_flag[display_errors] = on
php_admin_flag[log_errors] = true
rsyslog.conf
:syslogtag, contains, "php" /var/log/php-fpm/error.log
I've configured PHP to log to syslog, however FPM has no syslog function so it's logging to a file. I don't really care where the errors end up, just that they end up somewhere.
Any clues on how I might get this to work?
Source: (StackOverflow)
We've got nginx running on Ubuntu Trusty. It serves several websites over https, running on one ip address.
Randomly, although it seems slightly related to work load, sometimes single requests turn up on the wrong vhost. This leads to requests on lustrum.thalia.nu being served by thalia.nu and vice-versa. This then gives nasty error pages as users suddenly end up on a different web site. When you press F5, users then end up on the original target again.
It does not seem browser or operating system related. It's been confirmed to happen on Firefox (Linux, Windows, Mac), Edge (Windows) and Chrome (Linux, Windows, Android) and Safari (iOS).
The issue appears to occur more frequently when the system is put under load, suggesting some sort of race condition.
lustrum.thalia.nu
server {
server_name lustrum.thalia.nu;
listen 443 ssl;
ssl on;
ssl_certificate /etc/nginx/certs/lustrum.thalia.nu.crt;
ssl_certificate_key /etc/nginx/certs/lustrum.thalia.nu.key;
add_header Strict-Transport-Security "max-age=63072000; preload";
root /var/www/thalia-lustrum/public_html;
location / {
index index.php;
try_files $uri $uri/ /index.php?$args;
}
# Add trailing slash to */wp-admin requests.
rewrite /wp-admin$ $scheme://$host$uri/ permanent;
# Pass all .php files onto a php-fpm/php-fcgi server.
location ~ [^/]\.php(/|$) {
include /etc/nginx/fastcgi_params;
fastcgi_split_path_info ^(.+?\.php)(/.*)$;
if (!-f $document_root$fastcgi_script_name) {
return 404;
}
fastcgi_pass unix:/var/run/php5-fpm-thalia-lustrum.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /public_html$fastcgi_script_name;
}
}
thalia.nu
server {
server_name thalia.nu;
listen 443 ssl;
ssl on;
ssl_certificate /etc/nginx/certs/www.thalia.nu.crt;
ssl_certificate_key /etc/nginx/certs/www.thalia.nu.key;
add_header Strict-Transport-Security "max-age=63072000; preload";
root /var/www/thalia/public_html;
location / {
try_files $uri $uri/ /index.php/$request_uri;
index index.php index.html index.htm;
}
location ~ \.php($|/) {
include /etc/nginx/fastcgi_params;
set $script $uri;
set $path_info "";
if ($uri ~ "^(.+\.php)(/.+)") {
set $script $1;
set $path_info $2;
}
fastcgi_read_timeout 120;
fastcgi_pass unix:/var/run/php5-fpm-thalia-www.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /public_html$fastcgi_script_name;
}
}
As you can see, we're running different PHP5-FPM pools for these two domains. These pools are chrooted to different folders and run as different users. PHP-FPM's configuration are otherwise fairly standard as far as I can tell.
We've tried both nginx 1.4.6-ubuntu3 and nginx 1.8.0-1+trusty.
Log telemetry
266.266.266.266 - - [25/Nov/2015:09:24:40 +0100] "GET /committees/175 HTTP/1.1" 302 5 "https://thalia.nu/committees" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0" Host: "thalia.nu" Location: "https://thalia.nu/index.php//committees/wp-admin/setup-config.php"
In this line you can see that the request for the page /committees suddenly gets redirected to wp-admin. This appears that the request for /committees got handled by the thalia-lustrum PHP-fpm pool...
DNS zone file
We don't see how this can possibly be relevant, but...
;; MX Records
thalia.nu. 300 IN MX 20 relay.transip.nl.
thalia.nu. 300 IN MX 10 ivo.thalia.nu.
;; TXT Records
thalia.nu. 300 IN TXT "v=spf1 a mx a:mulgore.hexon-is.nl a:moonray.hexon-is.nl a:fred.thalia.nu a:ivo.thalia.nu ~all"
;; SPF Records (Sender Policy Framework)
thalia.nu. 300 IN SPF "v=spf1 a mx a:mulgore.hexon-is.nl a:moonray.hexon-is.nl a:fred.thalia.nu a:ivo.thalia.nu ~all"
;; CNAME Records
lustrum.thalia.nu. 300 IN CNAME thalia.nu.
;; A Records (IPv4 addresses)
thalia.nu. 300 IN A 131.174.31.8
www.thalia.nu. 300 IN A 131.174.31.8
ivo.thalia.nu. 300 IN A 131.174.31.8
Source: (StackOverflow)
I decided to change my OP to Nginx from Litespeed because i read much about the low resource that Nginx would cost.
Im running a Wordpress site with 500 users online
Okay thanks Guys for that much help :) I edited some things.
I have some questions left too:
Do i have to remove the ; before the pm. settings? I removed it What config counts? I got two fast cgi one in /etc/php5/fpm called php-fpm.conf and one in /etc/php5/fpm/pool.d called www.conf ?
I tried the new config over night and when i wake up i already got a blank page. Top:
top - 13:55:27 up 1 day, 19:28, 2 users, load average: 0.18, 0.36, 0.19
Tasks: 84 total, 1 running, 83 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.2%us, 0.0%sy, 0.0%ni, 99.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 3974264k total, 1051360k used, 2922904k free, 162380k buffers
Swap: 3998700k total, 0k used, 3998700k free, 609220k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1857 www-data 20 0 193m 55m 22m S 0 1.4 0:04.67 php5-fpm
1 root 20 0 8356 808 680 S 0 0.0 0:01.37 init
2 root 20 0 0 0 0 S 0 0.0 0:00.00 kthreadd
I think cpu usage is now lower, but thats not fixing the crash...
My configs are now: php-fpm.conf
;;;;;;;;;;;;;;;;;;;;;
; FPM Configuration ;
;;;;;;;;;;;;;;;;;;;;;
; All relative paths in this configuration file are relative to PHP's install
; prefix (/usr). This prefix can be dynamicaly changed by using the
; '-p' argument from the command line.
; Include one or more files. If glob(3) exists, it is used to include a bunch of
; files from a glob(3) pattern. This directive can be used everywhere in the
; file.
; Relative path can also be used. They will be prefixed by:
; - the global prefix if it's been set (-p arguement)
; - /usr otherwise
;include=/etc/php5/fpm/*.conf
;;;;;;;;;;;;;;;;;;
; Global Options ;
;;;;;;;;;;;;;;;;;;
[global]
; Pid file
; Note: the default prefix is /var
; Default Value: none
pid = /var/run/php5-fpm.pid
; Error log file
; If it's set to "syslog", log is sent to syslogd instead of being written
; in a local file.
; Note: the default prefix is /var
; Default Value: log/php-fpm.log
error_log = /var/log/php5-fpm.log
; syslog_facility is used to specify what type of program is logging the
; message. This lets syslogd specify that messages from different facilities
; will be handled differently.
; See syslog(3) for possible values (ex daemon equiv LOG_DAEMON)
; Default Value: daemon
;syslog.facility = daemon
; syslog_ident is prepended to every message. If you have multiple FPM
; instances running on the same server, you can change the default value
; which must suit common needs.
; Default Value: php-fpm
;syslog.ident = php-fpm
; Log level
; Possible Values: alert, error, warning, notice, debug
; Default Value: notice
;log_level = notice
; If this number of child processes exit with SIGSEGV or SIGBUS within the time
; interval set by emergency_restart_interval then FPM will restart. A value
; of '0' means 'Off'.
; Default Value: 0
emergency_restart_threshold = 1
; Interval of time used by emergency_restart_interval to determine when
; a graceful restart will be initiated. This can be useful to work around
; accidental corruptions in an accelerator's shared memory.
; Available Units: s(econds), m(inutes), h(ours), or d(ays)
; Default Unit: seconds
; Default Value: 0
emergency_restart_interval = 1s
; Time limit for child processes to wait for a reaction on signals from master.
; Available units: s(econds), m(inutes), h(ours), or d(ays)
; Default Unit: seconds
; Default Value: 0
process_control_timeout = 10s
; The maximum number of processes FPM will fork. This has been design to control
; the global number of processes when using dynamic PM within a lot of pools.
; Use it with caution.
; Note: A value of 0 indicates no limit
; Default Value: 0
process.max = 150
; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging.
; Default Value: yes
;daemonize = yes
; Set open file descriptor rlimit for the master process.
; Default Value: system defined value
rlimit_files = 1024
; Set max core size rlimit for the master process.
; Possible Values: 'unlimited' or an integer greater or equal to 0
; Default Value: system defined value
;rlimit_core = 0
; Specify the event mechanism FPM will use. The following is available:
; - select (any POSIX os)
; - poll (any POSIX os)
; - epoll (linux >= 2.5.44)
; - kqueue (FreeBSD >= 4.1, OpenBSD >= 2.9, NetBSD >= 2.0)
; - /dev/poll (Solaris >= 7)
; - port (Solaris >= 10)
; Default Value: not set (auto detection)
; events.mechanism = epoll
;;;;;;;;;;;;;;;;;;;;
; Pool Definitions ;
;;;;;;;;;;;;;;;;;;;;
; Multiple pools of child processes may be started with different listening
; ports and different management options. The name of the pool will be
; used in logs and stats. There is no limitation on the number of pools which
; FPM can handle. Your system will tell you anyway :)
; To configure the pools it is recommended to have one .conf file per
; pool in the following directory:
include=/etc/php5/fpm/pool.d/*.conf
request_terminate_timeout = 30s
pm.max_children = 25
; The number of child processes created on startup.
; Note: Used only when pm is set to 'dynamic'
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 5
; The desired minimum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.min_spare_servers = 2
; The desired maximum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.max_spare_servers = 5
; The number of seconds after which an idle process will be killed.
; Note: Used only when pm is set to 'ondemand'
; Default Value: 10s
pm.process_idle_timeout = 10s;
fastcgi_params:
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_FILENAME $request_filename;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
#fastcgi_param HTTPS $https;
# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param REDIRECT_STATUS 200;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_intercept_errors on;
nginx config:
user www-data;
worker_processes 2;
pid /var/run/nginx.pid;
events {
worker_connections 500;
# multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 40;
types_hash_max_size 2048;
server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# Logging Settings
##
# access_log /var/log/nginx/access.log;
# error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_comp_level 9;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/plain text/css application/json application/x-javascript text/$
www.conf
; Start a new pool named 'www'.
; the variable $pool can we used in any directive and will be replaced by the
; pool name ('www' here)
[www]
user = www-data
group = www-data
pm = dynamic
pm.max_children = 25
pm.start_servers = 5
pm.min_spare_servers = 2
pm.max_spare_servers = 5
pm.process_idle_timeout = 10s;
pm.max_requests = 100
request_terminate_timeout = 120s
The Mashine:
Dualcore
4gb ram
Source: (StackOverflow)
Currently running PHP 5.4 on CentOS 6.5.
I installed the webtatic php55w package then installed PEAR+PECL without issue along with redis and mongo through PECL.
Shortly after, I realized 5.5 is not compatible with the framework I was working with so I yum erased php55w and installed php54w in it's place.
Now the pecl command doesn't work at all. It just produces this really long string of errors every time I issue any pecl command (abbreviated...most repeated dozens of times):
Warning: Invalid argument supplied for foreach() in Command.php on line 259
Warning: Invalid argument supplied for foreach() in /usr/share/pear/PEAR/Command.php on line 259
...etc etc etc...
Notice: Undefined index: honorsbaseinstall in Role.php on line 180
Notice: Undefined index: honorsbaseinstall in Role.php on line 180
...etc etc etc...
Notice: Undefined index: installable in Role.php on line 145
Notice: Undefined index: installable in Role.php on line 145
...etc etc etc...
Notice: Undefined index: phpfile in Role.php on line 212
Notice: Undefined index: phpfile in Role.php on line 212
...etc etc etc...
Notice: Undefined index: config_vars in Role.php on line 49
Notice: Undefined index: config_vars in Role.php on line 49
...etc etc etc...
Warning: Invalid argument supplied for foreach() in PEAR/Command.php on line 259
Warning: Invalid argument supplied for foreach() in /usr/share/pear/PEAR/Command.php on line 259
...etc etc etc...
XML Extension not found
How can I fix this?
Source: (StackOverflow)