[ t h e f r a g g l e . c o m ]

Saturday, October 27th, 2007

TanTan flickr photo gallery broken after upgrade to Wordpress 2.3

So I realised that the admin part of the Flickr Photo gallery plugin I use (which is at http://www.thefraggle.com/flickr/) was a bit broken after upgrading wordpress to v2.3.

It appeared to work with the configuration I had set previously. However, when on the options page for the plugin, it was complaining of not being able to find a standard wordpress include.

A quick google search showed me a couple of resources, that told me where I needed to make a slight alteration to the source of my flickr plugin …

in the file “/path/to/your/wordpress-install/wp-content/plugins/silaspartners/flickr/admin-options-load.php”

    require_once(dirname(__FILE__).$tmpPath.'/wp-admin/admin-db.php');

needs to change to

    require_once(dirname(__FILE__).$tmpPath.'/wp-admin/includes/user.php');

Once that’s done, the plugin works a treat!

Thursday, June 14th, 2007

Virtual domains in exim4

I’ve been using exim for a while with virtual domain support, and thought it be best to document what I did somewhere.

For a long time I wondered how I might actually support virtual domains in exim 4 and held off by just dumping all mail from all domains into my mailbox (how gosh darn lazy is that).

I finally got bothered enough to, and found a lot of easy to follow help on the internets (google), and came up with the following additions to my exim4.conf :


domainlist localdomains = dsearch;/etc/exim4/virtual : @ : localhost

and in the routers section

begin routers
...
vdom_aliases:
driver = redirect
allow_defer
allow_fail
domains = dsearch;/etc/exim4/virtual
data = ${expand:${lookup{$local_part}lsearch*@{/etc/exim4/virtual/$domain}}}
retry_use_local_part
pipe_transport = address_pipe
file_transport = address_file
no_more


As you can see there is a directory called /etc/exim4/virtual, which contains several files, each of which define the aliases for a domain, an example file in that directory could look like:
filename: thefraggle.com


* : :fail:
chris : chris@localhost


As you can see this looks pretty simalar to the sendmail aliases file, but requires no rebuilding (if you have used sendmail at some point, you’ll know that you need to issue a “newaliases” command.

Anyway, hopefully that wasn’t too painful, any improvements, suggestions and other observations welcome!

Friday, April 13th, 2007

the number of servers you run …

Well reading popeys blog entry on how many servers he has, and what he uses them for made me feel a bit better than I did previously, about running more than one server of my own for personal use. I only have three servers, and a workstation and a laptop; maybe I don’t waste as much electricity as I thought I did

• etch.thefraggle.com - Debian etch, xen vps from bitfolk; general webserver for www.thefraggle.com, and master mail server.
• sarge.thefraggle.com - Debian etch, xen vps from bitfolk; run’s IRCd’s for blitzed.org and nixhelp.org and tertiary mail exchanger.
• beastie.thefraggle.com - FreeBSD-6.2-stable on an old p2 400mhz 128mb ram; used to run an ircd for nixhelp, and thefraggle.com website, but now has been retired to being a development machine and tertiary mail exchanger.
• laptop - centrino duo 1.7ghz 1gb ram; work laptop with winxp / debian etch for work stuff

There’s actually another box there, my dads p4 3ghz, that I have pretty much nicked off him for day to day internetting :). I suppose the fact that I have three servers kind of means I am pretty geeky?

Would be interesting if anyone reading this also commented with what they use :).

Thursday, April 12th, 2007

always check the disk free!

Came up against the strangest problem the other day, which in the end made it blatantly clear that the most simple 1st checks should always be done; that is things like disk space etc.

A server I have access too uses LDAP for user info and Kerberos5 for realm authentication. It was reported that this server wasn’t letting anyone login via ssh, and the only way that I was able to login, was via the console connection for the box (so essentially the only way to connect was locally).

I was able to prove that LDAP lookups were working, by simply id’ing on user accounts I knew to not exist locally which were stored in LDAP. I was also able to init a kerberos ticket when logged in, and login as ldap/krb5 users “locally”.

After a while of faffing about, enabling debug logging on sshd and so on, it dawned on me to check the disk space, thanks to an odd I/O moan in the sshd debug log. Low and behold! the partition where the kerberos key cache for ssh was completely full!

It goes to show that even simple checks like that which sometimes seem noddy, should always be done!

Monday, April 9th, 2007

http load balancing with squid

A while back at work I had to create a configuration for an internal squid http accelerator, and thought “hey, wouldn’t it be neat if I could load balance thefraggle.com with this method”.

Now, usually Squid is used to act as a caching proxy server, which means that client http requests are sent to the proxy server, the proxy server then goes out onto the web and attempts to grab the request, and returns the entry back to the client; in the process caching the pages (depending on the way the cache has been set up).

More…