melat0nin's questions

I have three domains all pointing to the same hosting space, mirrored using A records:

• example.org
• example.org.uk
• example.co.uk

I have a website on the root (/), and a MediaWiki installation at example.org/members/wiki. I'd like all requests to redirect to HTTPS and to the .org domain.

I've managed this with the website using .htaccess in the root:

RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} !example.org$ [NC]
RewriteRule (.*) https://www.example.org/$1 [R=301,L]

but I can't get it to work with the wiki -- requests to the .org.uk or .co.uk domains are not redirected.

I have this .htaccess in /members:

Options -Indexes
RewriteEngine On
RewriteRule ^example.org.uk(/.*)?$     https://www.example.org/$1
RewriteRule ^example.co.uk(/.*)?$ https://www.example.org/$1 

# MediaWiki pretty URL rewrites
RewriteRule ^/?members/wiki(/.*)?$ %{DOCUMENT_ROOT}/members/wiki/index.php [L]
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} !-f
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} !-d
RewriteRule ^(.*)$ %{DOCUMENT_ROOT}/members/wiki/index.php [L]

I want, for example, example.co.uk/members/wiki/My_Page to seamlessly redirect to https://www.example.org/members/wiki/My_Page.

Can anyone tell me what's wrong?

I have an Ubuntu 14.04 server running Netatalk 3.1.7. It's serving files to 3-4 other computers running a mixture of OSX Yosemite and Windows 7 (the latter connects via Samba rather than Netatalk).

My question is should all of these machines be authenticating via separate user accounts, or is it okay for them to connect using the same credentials? Currently I have a single account (files) which they all use, but I'm trying to diagnose some minor performance issues and I wondered if separating out the accounts per client machine might help this, or whether that's good practice anyway.

It's a simple question but one which I haven't been able to find an answer to!

I just upgraded php on my Ubuntu Server 12.04 to 5.4 from 5.3, using the ppa:ondrej/php5-oldstable ppa but now my php-powered sites don't load (I just get a downloaded file). I've restarted apache2, and my /etc/apache2/mods-available/php5.conf file looks like this:

<IfModule mod_php5.c>
     AddType application/x-httpd-php .php 
#    AddType application/x-httpd-php-source .phps

<FilesMatch "\.ph(p3?|tml)$">
    SetHandler application/x-httpd-php
</FilesMatch>
<FilesMatch "\.phps$">
#       SetHandler application/x-httpd-php-source
</FilesMatch>
# To re-enable php in user directories comment the following lines
# (from <IfModule ...> to </IfModule>.) Do NOT set it to On as it
# prevents .htaccess files from disabling it.
<IfModule mod_userdir.c>
    <Directory /home/*/public_html>
#            php_admin_value engine Off
    </Directory>
</IfModule>

There's nothing in apache's error.log:

[Tue Feb 10 15:55:13 2015] [notice] caught SIGTERM, shutting down
[Tue Feb 10 15:55:14 2015] [notice] suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Tue Feb 10 15:55:14 2015] [notice] Digest: generating secret for digest authentication ...
[Tue Feb 10 15:55:14 2015] [notice] Digest: done
[Tue Feb 10 15:55:14 2015] [notice] Apache/2.2.22 (Ubuntu) DAV/2 SVN/1.6.17 mod_fcgid/2.3.6 PHP/5.4.37-1+deb.sury.org~precise+1 mod_ruby/1.2.6 Ruby/1.8.7(2011-06-30) mod_ssl/2.2.22 OpenSSL/1.0.1 configured -- resuming normal operations

apache2ctl configtest gives this output:

[Tue Feb 10 16:23:42 2015] [warn] The Alias directive in /etc/apache2/conf.d/owncloud.conf.old at line 1 will probably never match because it overlaps an earlier Alias.
[Tue Feb 10 16:23:42 2015] [warn] NameVirtualHost 2001:41D0:2:6D94::1:443 has no VirtualHosts
[Tue Feb 10 16:23:42 2015] [warn] NameVirtualHost 94.23.234.148:443 has no VirtualHosts

I've also ensured the php5 mod is enabled with a2endmod php (it says it's already enabled). Obviously there was some sort of configuration change between 5.3 and 5.4 but I can't find what it was using Google-fu.

Weirdly, OwnCloud works, which is why I upgraded to 5.4 in the first place (v8 requires it). It's build in PHP and executes fine!

If I put a php file in /var/www it works, so the problem is obviously with my virtual hosts.

Any help much appreciated!

Laurence

I've just reinstalled my server's OS (Ubuntu 10.04 LTS) and installed Virtualmin using the install script (install.sh). Everything on the server is completely vanilla - the only thing I've done after logging into the clean system is to run install.sh and enable the userdir Apache module.

I've created a virtual host and logged into its account using SFTP, then created a php file with phpinfo() in it. When I browse to the file I get a 500 Internal Server Error. Virtualmin's default settings use fcgid for executing PHP.

Apache's error.log shows this:

[Fri Jan 27 10:20:46 2012] [notice] mod_fcgid: call /home/username/public_html/info.php with wrapper /home/username/fcgi-bin/php5.fcgi
suexec policy violation: see suexec log for more details
[Fri Jan 27 10:20:52 2012] [notice] mod_fcgid: process /home/username/public_html/info.php(28890) exit(communication error), terminated by calling exit(), return code: 112

and suexec.log has this:

[2012-01-27 10:20:46]: uid: (1000/username) gid: (1000/username) cmd: php5.fcgi
[2012-01-27 10:20:46]: cannot get docroot information (/home/username)

and the virtual host's error_log has this:

[Fri Jan 27 11:07:02 2012] [warn] [client 1.2.3.4] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Fri Jan 27 11:07:02 2012] [error] [client 1.2.3.4] Premature end of script headers: info.php

Obviously the problem is with suexec, but I've been playing about with this server for a few days trying to get the config right (and having little success) and this time I'm going to seek help before I touch anything and potentially make it worse :)

Any help would be really appreciated :)

I'm trying to set up a fresh Ubuntu 10.04 as my web server but I'm having no joy at all - I can't access the domain via a browser (it times out) and I get no ping response except when I ping from the server itself. I'm a bit of a noob when it comes to this aspect of server config so please bear with me.

I installed 10.04 LTS then apache, mysql and php (all appear to be working fine). I've also installed Webmin and Virtualmin. I seem to be able to create the virtual hosts without any problem, and I can access the server using its IP and its name (servername.kimsufi.com). Bind9 came installed with the default distro, so I've not made any changes to it except those made automatically by Virtualmin/Webmin.

I'm sure it's something simple but I've been reading for ages and tweaking, to no avail.

Here's a pastebin of my bind config files: http://pastebin.com/RAFyYG5m

The domain in question (domain.net) has its nameservers set to my server (servername.kimsufi.com) and the host's secondary nameserver (ns.kimsufi.com).

Here's the hosts file for the domain:

root@server:/var/lib/bind# cat domain.net.hosts
$ttl 38400
@       IN      SOA     server.kimsufi.com. root.server.kimsufi.com. (
                        1327162497
                        10800
                        3600
                        604800
                        38400 )
@       IN      NS      server.kimsufi.com.
@       IN      NS      ns.kimsufi.com.
domain.net.        IN      A       1.2.3.4
www.domain.net.    IN      A       1.2.3.4
ftp.domain.net.    IN      A       1.2.3.4
m.domain.net.      IN      A       1.2.3.4
localhost.domain.net.      IN      A       127.0.0.1

(Obviously the server's real IP isn't 1.2.3.4...)

Any help would be really appreciated :)

I've got a wordpress blog on a subdirectory which I've recently migrated from a .com to a .co.uk (myurlstudio.com/blog to myurl.co.uk/blog). The problem is that many of the posts have images in them, and their hrefs still point to the old domain, and so they don't work with the current htaccess settings. The images point to http://www.myurlstudio.com/blog/wp-content/uploads/image.jpg, when I want them to point to http://www.myurl.co.uk/blog/wp-content/uploads/image.jpg. So the thing I need to change in htaccess is 'http://www.myurlstudio.com/blog' to 'http://www.myurl.co.uk/blog' wherever it comes up.

Current htaccess looks like this (it's the standard URL-rewriting scheme for concrete5):

# -- concrete5 urls start --
<IfModule mod_rewrite.c>
RewriteEngine On

RewriteCond %{HTTP_HOST} ^(www.)?myurlstudio.com$
RewriteRule ^(.*)$ http://www.myurl.co.uk/$1 [L]


RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]


</IfModule>
# -- concrete5 urls end --

As you can see myurlstudio.com is redirected, but URLs inside documents don't seem to be rewritten.

Any help would be much appreciated!

I've recently moved a client's website (using the concrete5 CMS) over to a VPS running Gentoo, Apache 2.2, PHP5 and MySQL 5 and I've noticed that Apache response times are pretty bad (it was the same on the old server), sometimes way up to 8-9 seconds, but more often between 300ms and 3 seconds (towards 300ms I don't mind). I know it's not network latency, since the server has a ping (from my location) of around 30ms.

Here's an example of the times (you can see it's snappy after the initial wait):

I'm running APC (although I'm not sure that's working right...) and SuExec. Apache modules are:

 core_module (static)
 authn_file_module (static)
 authn_default_module (static)
 authz_host_module (static)
 authz_groupfile_module (static)
 authz_user_module (static)
 authz_default_module (static)
 auth_basic_module (static)
 include_module (static)
 filter_module (static)
 deflate_module (static)
 log_config_module (static)
 env_module (static)
 expires_module (static)
 headers_module (static)
 setenvif_module (static)
 version_module (static)
 ssl_module (static)
 mpm_prefork_module (static)
 http_module (static)
 mime_module (static)
 status_module (static)
 autoindex_module (static)
 asis_module (static)
 info_module (static)
 suexec_module (static)
 cgi_module (static)
 negotiation_module (static)
 dir_module (static)
 actions_module (static)
 userdir_module (static)
 alias_module (static)
 rewrite_module (static)
 so_module (static)
 suphp_module (shared)

and PHP modules are:

bcmath
calendar
ctype
curl
db
dbase
domxml
exif
ftp
gd
gettext
iconv
imap
mbstring
mcrypt
mime_magic
mysql
openssl
overload
pcre
posix
session
standard
sysvsem
sysvshm
tokenizer
xml
xslt
zlib

I've got gzip enabled on all relevant files.

Apache is running using prefork, and the settings in httpd.conf are:

<IfModule prefork.c>
StartServers         10
MinSpareServers      10
MaxSpareServers      20
MaxClients           250
MaxRequestsPerChild  4000
</IfModule>

HostnameLookups Off

I've noticed that pages which (I think) are database-heavy, such as the CMS's Dashboard, are usually slower. I thought this might mean MySQL could be optimised. I wondered also about Apache modules - I get confused between mod_php5, mod_cgi, mod_fastcgi etc etc - there is conflicting advice all over the net as to the best one to use.

Here's the output of MySQLTuner:

-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.0.44-log
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics -------------------------------------------
[--] Status: -Archive -BDB -Federated -InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 35M (Tables: 161)
[!!] Total fragmented tables: 15

-------- Security Recommendations  -------------------------------------------
[OK] All database users have passwords assigned

-------- Performance Metrics -------------------------------------------------
[--] Up for: 3d 21h 44m 16s (293K q [0.868 qps], 1K conn, TX: 135M, RX: 90M)
[--] Reads / Writes: 99% / 1%
[--] Total buffers: 58.0M global + 1.6M per thread (100 max threads)
[!!] Maximum possible memory usage: 219.7M (93% of installed RAM)
[OK] Slow queries: 0% (0/293K)
[OK] Highest usage of available connections: 2% (2/100)
[OK] Key buffer size / total MyISAM indexes: 16.0M/20.9M
[OK] Key buffer hit rate: 99.6% (5M cached / 21K reads)
[!!] Query cache is disabled
[OK] Sorts requiring temporary tables: 0% (0 temp sorts / 3K sorts)
[!!] Temporary tables created on disk: 47% (2K on disk / 5K total)
[!!] Thread cache is disabled
[!!] Table cache hit rate: 6% (64 open / 1K opened)
[OK] Open file limit used: 12% (128/1K)
[OK] Table locks acquired immediately: 100% (356K immediate / 356K locks)

-------- Recommendations -----------------------------------------------------
General recommendations:
    Run OPTIMIZE TABLE to defragment tables for better performance
    Reduce your overall MySQL memory footprint for system stability
    Enable the slow query log to troubleshoot bad queries
    When making adjustments, make tmp_table_size/max_heap_table_size equal
    Reduce your SELECT DISTINCT queries without LIMIT clauses
    Set thread_cache_size to 4 as a starting value
    Increase table_cache gradually to avoid file descriptor limits
Variables to adjust:
  *** MySQL's maximum memory usage is dangerously high ***
  *** Add RAM before increasing MySQL buffer variables ***
    query_cache_size (>= 8M)
    tmp_table_size (> 32M)
    max_heap_table_size (> 16M)
    thread_cache_size (start at 4)
    table_cache (> 64)

I noticed when a DB-heavy page was loaded, CPU usage spiked at 57% (using top) - to me that suggests there's either some badly-optimised MySQL stuff or caching is absolutely necessary to speed this setup up.

Any help would be much appreciated!

I've installed APC on my Gentoo LAMP server (Apache 2.2, PHP 5.2.13) and it's running fine (I see it in phpinfo()), but it's not actually doing any caching. Looking at apc.php, I can see that only 1.7% of its memory allocation is being used, which is one file of ~430kb. I'm running a CMS on the server (concrete5) which has hundreds of PHP files, so I'd expect cache utilisation to be a lot higher. Obviously it's being ignored, for some reason.

The relevant settings in php.ini are:

[apc]
apc.enabled = 1
apc.shm_size = 32

Other than that it's vanilla, as far as I know.

If it helps, here's the output of httpd -M:

Loaded Modules:
 core_module (static)
 authn_file_module (static)
 authn_default_module (static)
 authz_host_module (static)
 authz_groupfile_module (static)
 authz_user_module (static)
 authz_default_module (static)
 auth_basic_module (static)
 include_module (static)
 filter_module (static)
 deflate_module (static)
 log_config_module (static)
 env_module (static)
 expires_module (static)
 headers_module (static)
 setenvif_module (static)
 version_module (static)
 ssl_module (static)
 mpm_prefork_module (static)
 http_module (static)
 mime_module (static)
 status_module (static)
 autoindex_module (static)
 asis_module (static)
 info_module (static)
 suexec_module (static)
 cgi_module (static)
 negotiation_module (static)
 dir_module (static)
 actions_module (static)
 userdir_module (static)
 alias_module (static)
 rewrite_module (static)
 so_module (static)
 suphp_module (shared)
Syntax OK

and php -m:

[PHP Modules]
bcmath
calendar
ctype
curl
db
dbase
domxml
exif
ftp
gd
gettext
iconv
imap
mbstring
mcrypt
mime_magic
mysql
openssl
overload
pcre
posix
session
standard
sysvsem
sysvshm
tokenizer
xml
xslt
zlib

[Zend Modules]

Any ideas would be much appreciated!

EDIT: i've reinstalled with Ubuntu server and it's not working as it should. Was never comfortable with Gentoo anyway ;)

I'm a Gentoo noob so please be gentle :)

I'm trying to install APC on a Gentoo (2006) based LAMP stack provided on a VPS by my host. I've run

emerge -av php5-dev/pecl-apc

to install it, and it appears to be compiled etc properly. EDIT: Here's the last several lines of the emerge: http://pastebin.com/MMjtjhrz

I've added these lines to /usr/local/lib64/php5/php.ini:

[apc]
apc.enabled = 1
apc.shm_size = 32

and restarted Apache (which restarts fine, suggesting okay config), but APC doesn't run. Can't see it in phpinfo() or using php -m.

EDIT: not sure if it matters, but the .so files are located in /usr/local/php5/lib/php/extensions/no-debug-non-zts-20060613/, which seems a bit bizarre. Suhosin is in there too, but it's not running either.

Can anyone help? Much appreciated! :)