Posted on in System Administration
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 …
Posted on in Networking
For some reason, they don't make this completely obvious.
login: admin
password: admin
Posted on in System Administration
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 …
Posted on in System Administration
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 …
Posted on in Networking
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 …
Posted on in System Administration
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 …
Posted on in System Administration
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 …Posted on in Networking
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 …Posted on in Software
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 …
Posted on in voice
I hate losing useful SQL queries, so I tend to save them. Ever so often, I stumble across a file of queries from some work I was doing months ago. The following two queries are just such a case. I was analyzing some call data for a call center that …
Posted on in System Administration
Posted on in IT Management
Considering the economy and the crunch that many IT departments are feeling, it is no surprise that many small to medium businesses are curious about using Microsoft's free security product as a replacement to the enterprise security solutions they have been using. Individual businesses will have to decide if Microsoft …
Posted on in Networking
If you find yourself in the situation where a Cisco 7200 series router has a corrupted IOS image or the flash drive has gone on the blink, the following documents may be useful to you. Not all of these documents are Cisco 7200 specific, but they are all useful.
Posted on in System Administration
install_driver(Sybase) failed: Can't load '/usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi/auto/DBD/Sybase/Sybase.so' for module DBD::Sybase: libct.so.3: cannot open shared object file: No such file or directory at /usr/lib/perl5/5.8.0/i386-linux-thread-multi/DynaLoader.pm line 229.
at (eval …Posted on in Networking
If you've worked on networks long enough, you're probably familiar with
iperf. This application is great for testing
throughput between two computers on your network. Unfortunately, if you find
yourself in a situation where you have less than two computers to test with,
iperf is less than ideal.
Fortunately, Cisco …
