slaptijack

Oracle's VirtualBox 3.2.8 has been released. This is a maintenance release that mainly focuses on bug fixes rather than new features. Although I don't think the changes in this release are as prolific as the fixes in 3.2.6, it's definitely worth downloading.

One key feature buried …

We ran across the following error on a MySQL slave server recent:

mysql> SHOW SLAVE STATUS \G
<snip>
Last_Error: Query caused different errors on master and slave. Error on master: 'Deadlock found when trying to get lock; try restarting transaction' (1213), Error on slave: 'no error' (0). Default database: '<database_name …

If you need to debug what queries your WordPress site is making, try adding the following PHP to your theme:

<?php
  foreach ( $wpdb->queries as $query ) {
    echo "$query[0]<br />";
  }
?>

For this code to work, you need to add the following line to wp-config.php:

define('SAVEQUERIES', true);

After that …

The situation: A Cisco 7604 with SAMI card is able to send packets from the individual IOS instances running on the SAMI PPCs, but is unable to receive packets.

The hardware: The table below describes the hardware involved.

The guys at Google have rolled out a few interface changes for Gmail users. So far, these changes have not been rolled out to Google Apps users.

New Look

The Gmail interface has been slimmed down to remove clutter and make it easier to find what you need. The result …

This is a picture (larger) of a Cisco 7604 with Sup32 and SAMI card. The modules you see here are:

As every system administrator is aware, keeping precise time on your servers can be critical. For example, if you use QueueMetrics for your Asterisk-based call center and the QM and MySQL servers are running with different times, users will notice confusing behavior as calls seem to arrive in the future …

For some reason, they don't make this completely obvious.

login: admin
password: admin

On one of the WordPress-based websites I maintain, I have removed the category base so that, when browsing a category the url doesn't end with /category/category-slug/. I accomplished that by putting a single '.' in the "Category base" text box of the Permalinks admin page. This worked fine until I …

While setting up a new blog for an old site the other day, I ran into a situation where the main page would work, but individual posts would result in a 404 (page not found) error. Checking the error log revealed that Apache could not find the file it was …

I would hope there is a better way to do this. The other day, I had a need to see all the interfaces on a router and how much input and output traffic they were passing. This just seems like something that should be built in, but I've not seen …

Configuring your syslog server to accept logging output from your Cisco routers and switches requires a few basic steps. We'll assume that you are using a new server and haven't made any previous changes to the syslog configuration. I use <acronym title="Red Hat Enterprise Linux">RHEL</acronym> 5 most …

This problem happened on a Mac Mini running OS X 10.4 (Tiger) not too long ago. The user was trying to run tshark against interface en2 — a USB <acronym title="Network Interface Card">NIC</acronym>. The tshark command produced the following output.

# tshark -w /tmp/slap -i en2
Capturing …

This seems to be a pretty common problem for Cisco users. Not that Cisco devices have more queue drop problems, just that more Cisco users are a little confused by the information generated in the show interface command.

Specifically, we're talking about the lines that look something like this:

Input …

I always forget to do this. Long ago I installed XQuartz on my Mac OS X 10.5 (Leopard) desktop. For the life of me, I can't remember why I installed it. XQuartz replaces the X11 that comes with Mac OS X. I might have done this since XQuartz is …