Wordpress Using WP Rocket plugin

Matt Williams · Sep 29, 2015

Hello,
Recently, I was approached by WP Rocket to try their Plugin. After installing it and use their css and js minifier feature, I get a 403 forbidden error message when accessing a .css file like below:

<html>
<head><title>403 Forbidden</title></head>
<body bgcolor="white">
<center><h1>403 Forbidden</h1></center>
<hr><center>nginx</center>
</body>
</html>
Click to expand...

and I get that when accessing: https://mysite.com/wp-content/cache/min/1/5bcf2bdbad2d60c44a5f6c9b4508ca0c.css

the .css file is already minified by the plugin but nginx will not allow access to it...

Anyone can tell how I can fix it?

eva2000 · Sep 29, 2015

anything in nginx vhost error and access logs for those 403 files ?

Matt Williams · Sep 29, 2015

Server logs show:

2015/09/28 20:25:27 [error] 22255#22255: *234 access forbidden by rule, client: <VPS IP>, server: mysite.com, request: "GET /wp-content/ HTTP/2.0", host: "mysite.com", referrer: "https://mysite.com/"
Click to expand...

eva2000 · Sep 29, 2015

Matt Williams said: ↑

Server logs show:
Click to expand...

what does your nginx vhost look like ?

Matt Williams · Sep 29, 2015

Code:

server {
  server_name xxxxxx.com http://www.xxxxxxx.com;

# ngx_pagespeed & ngx_pagespeed handler
#include /usr/local/nginx/conf/pagespeed.conf;
#include /usr/local/nginx/conf/pagespeedhandler.conf;
#include /usr/local/nginx/conf/pagespeedstatslog.conf;

  # limit_conn limit_per_ip 16;
  # ssi  on;

  access_log /home/nginx/domains/xxxxxx.com/log/access.log combined bu$
  error_log /home/nginx/domains/xxxxxx.com/log/error.log;

  root /home/nginx/domains/xxxxxxx.com/public;

  # prevent access to ./directories and files
  location ~ (?:^|/)\. {
   deny all;
  }

include /usr/local/nginx/conf/wpsupercache_xxxxxx.com.conf;

  location / {

  # Enables directory listings when index file not found
  #autoindex  on;

  # for wordpress super cache plugin
  try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html $ur$

  # Wordpress Permalinks
  #try_files $uri $uri/ /index.php?q=$uri&$args;

  }

location ~* /(wp-login\.php) {
    limit_req zone=xwplogin burst=1 nodelay;
    #limit_conn xwpconlimit 30;
    auth_basic "Private";
    auth_basic_user_file /home/nginx/domains/xxxxxx.com/htpasswd_wplog$
    include /usr/local/nginx/conf/php-wpsc.conf;
# Wordpress Permalinks
  #try_files $uri $uri/ /index.php?q=$uri&$args;

  }

location ~* /(wp-login\.php) {
    limit_req zone=xwplogin burst=1 nodelay;
    #limit_conn xwpconlimit 30;
    auth_basic "Private";
    auth_basic_user_file /home/nginx/domains/xxxxx.com/htpasswd_wplog$
    include /usr/local/nginx/conf/php-wpsc.conf;
}

location ~* /(xmlrpc\.php) {
    limit_req zone=xwplogin burst=2 nodelay;
    #limit_conn xwpconlimit 30;
    include /usr/local/nginx/conf/php-wpsc.conf;
}

  include /usr/local/nginx/conf/wpsecure_xxxxxx.com.conf;
  include /usr/local/nginx/conf/php-wpsc.conf;
  include /usr/local/nginx/conf/staticfiles.conf;
  include /usr/local/nginx/conf/drop.conf;
  #include /usr/local/nginx/conf/errorpage.conf;
  include /usr/local/nginx/conf/vts_server.conf;
  include /usr/local/nginx/rocket-nginx/rocket-nginx.conf;
}

eva2000 · Sep 29, 2015

Edited your post to also wrap in CODE tags easier to read

For troubleshooting

try commenting out /usr/local/nginx/conf/wpsecure_xxxxxx.com.conf include

and/or
Code:
  # prevent access to ./directories and files
  location ~ (?:^|/)\. {
   deny all;
  }
and/or /usr/local/nginx/conf/drop.conf include file

if any have rules that may trigger the problem

eva2000 · Sep 29, 2015

oh btw, what's contents of /usr/local/nginx/rocket-nginx/rocket-nginx.conf ? use CODE tags

could of overlapped with other rules ?

Matt Williams · Sep 29, 2015

I tried the above and commented them out but still gives me the 403 forbidden..
The contents of the /usr/local/nginx/rocket-nginx/rocket-nginx.conf is located HERE

Its used when your only using nGinx as the server...

eva2000 · Sep 29, 2015

oh so wp rocket does full page caching too, so could conflict with wp-super cache settings so need to revert wp super cache nginx settings

switch back to default centmin mod php include

from several instances exist in nginx vhost
Code:
include /usr/local/nginx/conf/php-wpsc.conf;
to
Code:
include /usr/local/nginx/conf/php.conf;
disable permalinks for wp super cache so comment it out and uncomment normal one
Code:
  # for wordpress super cache plugin
  #try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html $ur$

  # Wordpress Permalinks
  try_files $uri $uri/ /index.php?q=$uri&$args;
comment out
Code:
include /usr/local/nginx/conf/wpsecure_xxxxxx.com.conf;
and see

it's similar process to changing from wp super cache to nginx level redis cache - btw, if you get the chance some siege benchmarks for wp super cache vs wp rocket vs nginx level redis cache would be interesting

and disable wp super cache plugin

Matt Williams · Sep 29, 2015

Still gives me the 403 Forbidden :=( I did all the above steps. WP Super Cache is disabled - I also have redis cache installed using the Redis Cache Plugin. Still gives me the 403 though when viewing the actual Cached css or JS file when viewing the source of the page.

eva2000 · Sep 29, 2015

Matt Williams said: ↑

Still gives me the 403 Forbidden :=( I did all the above steps. WP Super Cache is disabled - I also have redis cache installed using the Redis Cache Plugin. Still gives me the 403 though when viewing the actual Cached css or JS file when viewing the source of the page.
Click to expand...

strange then

noticed the site in 1st post is over SSL https, did you make sure to edit the https Nginx vhost and not just non-https http Nginx vhost appropriately ?

Matt Williams · Sep 29, 2015

Glad you mentioned the ssl.conf file because I totally overlooked that lol! Which fixed the issue and I must say that WP Rocket is indeed faster then WP Super Cache.

With WP Super Cache, my page was loading around 1.40 sec. now with WP Rocket it loads 1.09 sec.

I'm going to test with siege and I'll post the outcome here.

eva2000 · Sep 29, 2015

Matt Williams said: ↑

Glad you mentioned the ssl.conf file because I totally overlooked that lol! Which fixed the issue and I must say that WP Rocket is indeed faster then WP Super Cache.

With WP Super Cache, my page was loading around 1.40 sec. now with WP Rocket it loads 1.09 sec.

I'm going to test with siege and I'll post the outcome here.
Click to expand...

haha.. glad that helped !

Interesting to see if you can throw Redis Nginx level caching into the benchmark mix too

of course WP Super Cache doesn't minify css etc so you need to combine with Autoptimize WP Plugin or something

FYI, for reference

Nginx level Redis Cache is ~45% faster than WP Super Cache with apples to apples comparison of same amount of posts on WP Index page.

WP Super Cache + Redis Object Caching 1,610.82 trans/sec & longest trans time = 0.16s

Nginx level Redis Cache + Redis Object Caching 2,337.54 trans/s & longest trans time = 0.09s

WP Super Cache + Redis Object Caching
Code:
siege -b -c50 -r1000 http://newdomain.com/

Transactions:                  50000 hits
Availability:                 100.00 %
Elapsed time:                  31.04 secs
Data transferred:             346.57 MB
Response time:                  0.03 secs
Transaction rate:            1610.82 trans/sec
Throughput:                    11.17 MB/sec
Concurrency:                   49.42
Successful transactions:       50000
Failed transactions:               0
Longest transaction:            0.16
Shortest transaction:           0.00
Nginx level Redis Cache + Redis Object Caching
Code:
siege -b -c50 -r1000 http://newdomain.com/

Transactions:                  50000 hits
Availability:                 100.00 %
Elapsed time:                  21.39 secs
Data transferred:             346.57 MB
Response time:                  0.02 secs
Transaction rate:            2337.54 trans/sec
Throughput:                    16.20 MB/sec
Concurrency:                   49.44
Successful transactions:       50000
Failed transactions:               0
Longest transaction:            0.09
Shortest transaction:           0.00

rdan · Sep 30, 2015

From the looks of it's config and Plugin Feature set, WP Rocket is just the same as WP-Super-Cache implementation pair with ngx_pagespeed features.

I would stick to WP-Super-Cache, very solid for for every site I manage plus it's FREE.
And you have the control for everything.

And their nginx config is so bad!
with 10+ if conditions, wooh! That would stress Nginx CPU usage.

Mine only use 1/single IF, and I only bypass cache via cookies.

Plus adding a lot of useless HTTP Headers
Looks like your debugging every page request.

Matt Williams · Sep 30, 2015

When you say

Nginx level Redis Cache + Redis Object Caching
Click to expand...

You mean, you installed the redis cache server via Redis - How to install Redis server on Centmin Mod LEMP stack | Centmin Mod Community

and installed the Redis Object Caching plugin?

I have installed the Redis Cache Server from the above directions within the link. Then I installed the Redis Object Cache Plugin - same as you?

eva2000 · Sep 30, 2015

There's 3 (4th optional) steps

install redis server

install redis object cache wp plugin

setup nginx level redis full page caching

optional step setup PHP session storage via redis

JarylW · Oct 1, 2015

@eva2000

Do you run siege from the same vps, from another in the same location, or from your work desktop/laptop?

eva2000 · Oct 1, 2015

proper way is to run from remote server and not same as vps..

but quick runs for low load siege tests from same vps are okay

JarylW · Oct 1, 2015

My test parameters are :
Siege performed on home desktop
Frontpage is a modified Wordpress theme with full screen Revslider and 4 WooCommerce products.

Also note that RocketWP had lesser resources (files downloaded on each Page Load) than Redis-nginx because I had to exclude some css and js in autoptimize for the theme to function properly whereas RocketWP did everything automatically without breaking (at least for this theme).

Note that I did not use redis object cache or any object cache plugin.
Code:
Redis-Nginx

Lifting the server siege...      done.
Transactions:                  48076 hits
Availability:                  99.87 %
Elapsed time:                 560.14 secs
Data transferred:             523.96 MB
Response time:                  0.21 secs
Transaction rate:              85.83 trans/sec
Throughput:                     0.94 MB/sec
Concurrency:                   17.86
/Successful transactions:       48076
Failed transactions:              62
Longest transaction:            9.38
Shortest transaction:           0.02
Code:
WP-Rocket

Lifting the server siege...      done.
Transactions:                  47437 hits
Availability:                  99.74 %
Elapsed time:                 440.25 secs
Data transferred:             565.36 MB
Response time:                  0.17 secs
Transaction rate:             107.75 trans/sec
Throughput:                     1.28 MB/sec
Concurrency:                   18.35
/Successful transactions:       47437
Failed transactions:             126
Longest transaction:            9.21
Shortest transaction:           0.02
Had to stop the siege because it wouldn't print the summary. Maybe glitchy on windows - not sure.

I don't know what to make of this siege results. But pagespeed tests show that rocket-wp is indeed faster.

eva2000 · Oct 1, 2015

well there's several things here

Total completed and failed transactions vs trans/sec. If you look at the former, Nginx Redis WP slightly better. But css/js handling seems WP Rocket has that covered better.

But you should also add Redis Object cache to mix and see too

We should hunt around for other css/js optimising WP plugins to try and pair with WP Super Cache or Nginx Redis level caching.

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