Fastcgi_cache only caching 1 website

Fri Oct 14 16:11:47 UTC 2016

Hi,

Im relativly new to the Linux world but am learning bloody quick (you have
too, its unforgiving! :) )

I am setting up a new web server and im nearly ready to go live but cant
iron out 1 last issue - and thats i have multiple wordpress websites setup.

Each wordpress website has its own install and installation directory and
seperate database.

I have configured nginx with the fastcgi_cache module and it works - but
only for the very first website i setup on the server. Every subsequent
website gets nothing cached.

Running nginx/php7 on Ubuntu Server 16.04

Here is my nginx/nginx.conf file

user www-data;
worker_processes 1;
worker_rlimit_nofile 100000;
pid /run/nginx.pid;

events {
	worker_connections 1024;
	multi_accept on;
}

http {
	sendfile on;
	tcp_nopush on;
	tcp_nodelay on;
	keepalive_timeout 15;
	types_hash_max_size 2048;

	server_tokens off;
	reset_timedout_connection on;
	# add_header X-Powered-By "EasyEngine";
	add_header rt-Fastcgi-Cache $upstream_cache_status;

	# Limit Request
	limit_req_status 403;
	limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;

	# Proxy Settings
	# set_real_ip_from	proxy-server-ip;
	# real_ip_header	X-Forwarded-For;

	fastcgi_read_timeout 300;
	client_max_body_size 100m;

	##
	# SSL Settings
	##

	ssl_session_cache shared:SSL:20m;
	ssl_session_timeout 10m;
	ssl_prefer_server_ciphers on;
	ssl_ciphers
ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA;
	ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

	##
	# Basic Settings
	##
	# 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;

	# Log format Settings
	log_format rt_cache '$remote_addr $upstream_response_time
$upstream_cache_status [$time_local] '
	'$http_host "$request" $status $body_bytes_sent '
	'"$http_referer" "$http_user_agent"';

	##
	# Gzip Settings
	##

	gzip on;
	gzip_disable "msie6";

	gzip_vary on;
	gzip_proxied any;
	gzip_comp_level 2;
	gzip_buffers 16 8k;
	gzip_http_version 1.1;
	gzip_types
	    application/atom+xml
	    application/javascript
	    application/json
	    application/rss+xml
	    application/vnd.ms-fontobject
	    application/x-font-ttf
	    application/x-web-app-manifest+json
	    application/xhtml+xml
	    application/xml
	    font/opentype
	    image/svg+xml
	    image/x-icon
	    text/css
	    text/plain
	    text/x-component
	    text/xml
	    text/javascript;

	##
	# Cache Settings
	##

	add_header Fastcgi-Cache $upstream_cache_status;
	fastcgi_cache_key "$scheme$request_method$host$request_uri";
	fastcgi_cache_use_stale error timeout invalid_header http_500;
	fastcgi_ignore_headers Cache-Control Expires Set-Cookie;

	##
	# Virtual Host Configs
	##

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;

	server {
		listen 80 default_server;
		server_name _;
		return 444;
	}

}

Here is the cache working websites config

fastcgi_cache_path /var/www/html/1stwebsite.com/cache levels=1:2
keys_zone=1stwebsite.com:100m inactive=60m;

server {
	server_name 1stwebsite.com www.1stwebsite.com;

	access_log /var/www/html/1stwebsite.com/logs/access.log;
	error_log /var/www/html/1stwebsite.com/logs/error.log;

	root /var/www/html/1stwebsite.com/public/;
	index index.php index.html index.htm;

	set $skip_cache 0;

	if ($request_method = POST) {
		set $skip_cache 1;
	}

	if ($query_string != "") {
		set $skip_cache 1;
	}

	if ($request_uri ~*
"/wp-admin/|/phpmyadmin|/xmlrpc.php|wp-.*.php|/feed/|index.php|sitemap(_index)?.xml")
{
		set $skip_cache 1;
	}

	if ($http_cookie ~*
"comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in")
{
		set $skip_cache 1;
	}

	if ($http_cookie ~* "PHPSESSID"){
		set $skip_cache 1;
	}

	location / {
		try_files $uri $uri/ /index.php?$args;
	}

	location /phpmyadmin {
		auth_basic "Admin Login";
		auth_basic_user_file /etc/nginx/allow_phpmyadmin;
	}

	location ~ \.php$ {
		try_files $uri =404;
		fastcgi_split_path_info ^(.+\.php)(/.+)$;
		fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
		fastcgi_index index.php;
		include fastcgi_params;
		fastcgi_cache_bypass $skip_cache;
		fastcgi_no_cache $skip_cache;
		fastcgi_cache 1stwebsite.com;
		fastcgi_cache_valid 60m;
	}

	location ~ /purge(/.*) {
		fastcgi_cache_purge 1stwebsite.com "$scheme$request_method$host$1";
	}

}

Here is 1 of the non working cache websites config

fastcgi_cache_path /var/www/html/2ndwebiste.co.uk/cache levels=1:2
keys_zone=2ndwebiste.co.uk:100m inactive=60m;

server {
	server_name 2ndwebiste.co.uk www.2ndwebiste.co.uk;

	access_log /var/www/html/2ndwebiste.co.uk/logs/access.log;
	error_log /var/www/html/2ndwebiste.co.uk/logs/error.log;

	root /var/www/html/2ndwebiste.co.uk/public/;
	index index.php index.html index.htm;

	set $skip_cache 0;

	if ($request_method = POST) {
		set $skip_cache 1;
	}

	if ($query_string != "") {
		set $skip_cache 1;
	}

	if ($request_uri ~*
"/wp-admin/|/phpmyadmin|/xmlrpc.php|wp-.*.php|/feed/|index.php|sitemap(_index)?.xml")
{
		set $skip_cache 1;
	}

	if ($http_cookie ~*
"comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_no_cache|wordpress_logged_in")
{
		set $skip_cache 1;
	}

	if ($http_cookie ~* "PHPSESSID"){
		set $skip_cache 1;
	}

	location / {
		try_files $uri $uri/ /index.php?$args;
	}

	location /phpmyadmin {
		auth_basic "Admin Login";
		auth_basic_user_file /etc/nginx/allow_phpmyadmin;
	}

	location ~ \.php$ {
		try_files $uri =404;
		fastcgi_split_path_info ^(.+\.php)(/.+)$;
		fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
		fastcgi_index index.php;
		include fastcgi_params;
		fastcgi_cache_bypass $skip_cache;
		fastcgi_no_cache $skip_cache;
		fastcgi_cache 2ndwebiste.co.uk;
		fastcgi_cache_valid 60m;
	}

	location ~ /purge(/.*) {
		fastcgi_cache_purge 2ndwebiste.co.uk "$scheme$request_method$host$1";
	}

}

I think its to do with the very top line of both config files?

fastcgi_cache_path /var/www/html/2ndwebiste.co.uk/cache levels=1:2
keys_zone=2ndwebiste.co.uk:100m inactive=60m;

Does this need to be in the main nginx.conf file and not in each individual
website config?

If so - am i not meant to have a cache folder for each individual website,
should there just be 1 central cache folder for all websites?
I thought the "keys_zone" directive needs to be individual for each website,
and thus created a seperate cache location for each website hosted.

Thanks to anybody that can walk with me over the finishing line

Regards

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,270284,270284#msg-270284