Posted on in System Administration
It seems
this problem
has resurfaced again with the new version of Mac OS X. More specifically, this
problem seems to affect appending search domains when the hostname contains a
dot. In Yosemite (10.10), mDNSResponder has been replaced with discoveryd.
Fortunately, all we need to do here is add …
Posted on in System Administration
Every time I restart my OS X Mountain Lion (10.9) laptop, it stops using the DNS search domains I've added via the Network preferences pane. I have found that restarting mDNSResponder fixes this issue. There are two ways to do this.
The first is a simple restart by sending …
Posted on in System Administration
When I upgraded to OS X 10.7 (Lion), I started using the built-in IPSec VPN client rather than Cisco's VPNClient. I experienced problems immediately. At first it appeared that the connection was being made, but no traffic was passing. When I tried pinging by IP address, I found that …
Posted on in Software
In a small environment, there's very little reason to rely on DNS resolution inside MySQL. You can disable it by adding skip-name-resolve to your my.cnf or by using the --skip-name-resolve command line argument.
Remember that if you disable DNS lookups, you will need to set permissions using IP addresses …
Posted on in System Administration
Clearing the Windows DNS Server cache from the command line is an easy task.
C:\> dnscmd . /clearcache
The . indicates the local DNS server. You can use this command to clear the
cache of remote DNS servers by replacing the . with the hostname or IP address
of the remote server.
Posted on in IT Management
I got a call from GoDaddy the other day warning me that VeriSign is raising the price of domain registrations. This seems like a big deal because the price hike is happening on July 1st. The truth, though, is that VeriSign announced the price increase six months ago in December …
Posted on in System Administration
Most of OS X Caching Only Name Server series was written in the pre-Leopard days. The final step in that process was to make the new server the preferred DNS server. Unfortunately, a change was introduced in Leopard that only allows you to add the local server to the list …
Posted on in Software
After almost a year of development, the Internet Software Consortium (ISC) announced the newest release of their Domain Name System (DNS) server, BIND 9.4.3, today. This release includes over 140 fixes over BIND 9.4.2.
Although this maintenance release is mainly focused on bug fixes, it does …
Posted on in System Administration
A few days ago, while reloading DNS on a server, I noticed an issue in the log:
Jul 31 11:29:50 admin named[6098]: the working directory is not writable
First, let's talk about how this error was caught. When doing various tasks, I often tail the log to …
Posted on in Software
In case you missed it, Internet Systems Consortium (ISC) released version 9.4.2 of their BIND DNS server yesterday. It is recommended that all you BIND DNS operators out there upgrade your software, as BIND 9.4.2 over 90 fixes! Here's a graphical representation of the types of …
