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IBM Model M Keyboard

After beginning to unpack my things in my office I stumbled across my IBM Model M (1984) keyboard I purchased when I worked at TekTegrity. It has been years since I’ve used this so I hooked it up to my laptop dock and began working on homework. I love the way this keyboard feels, but even after typing just a few hundred words my wrists and hands are noticably tired. Perhaps this will be a good workout to get those extremities back in shape (?) as I never noticed this problem when I used it exclusively a few years ago. Since then I have mostly been using a WASD CODE keyboard; this feels much different than that. Ref: wasdkeyboards.com/index.php/products/code-keyboard.html

Making Plesk Slave DNS Extension Work with Debian 8

I have a Plesk server that I use for hosting some random clients and other websites, and I wanted to get the internal DNS working correctly. The instructions provided with the slave DNS extension do not work ( at least not with Debian 8 ). To get this working I needed to add their configuration stuff to the named.conf.local, change the long rndc key string to just rndc-key, and remove that long string from the keys array in the controls section.

I changed this:

 key "rndc-key-123.123.123.123" {
   algorithm hmac-md5;
   secret "secret-key-goes-here";
 };
 
 controls {
   inet * port 953 allow { 111.222.333.444; 127.0.0.1; } keys { "rndc-key"; "rndc-key-123.123.123.123"; };
 };

to this

key "rndc-key" {
   algorithm hmac-md5;
   secret "secret-key-goes-here";
 };
 
 controls {
   inet * port 953 allow { 111.222.333.444; 127.0.0.1; } keys { "rndc-key"; };
 };

and everything started working as normal. This configuration is in stark contrast to the cPanel DNS Only server I have running for TracerHost.com, as it just works without any trouble. You just install it and configure in the cPanel master and everything is happy. What a disappointment that Plesk doesn’t have this feature built in, as I like Plesk over cPanel for hosting. I don’t know that there are any differences between the two servers once everything is set up, as they both run off of similar technology; they just have a different master server configuration at the head.

Another thing that was a problem was having the time synchronized between the slave DNS server and the Plesk server. This setting is something that I didn’t think about immediately, though it has always been a huge problem in Windows environments. I noticed in the log file that the updates were coming across, but were failing because of the time difference. I check on both servers, and the Plesk master was about 12 minutes behind for some reason. I must have a configuration issue in the hardware clock.

After doing all this, and restarting Bind, everything started updating as usual. Make sure you run an open resolver check after getting set up just to make sure your DNS server is configured and secured correctly.

During the deployment of a new Citrix XenApp 7 environment (Windows Server 2012 R2 for both VDA and StoreFront), there has been a strange issue that was nearly impossible to replicate. Sometimes users would call and say their applications were flashing back and forth with a black screen. Upon remoting into their machine I can see that is the case. The only fix I found to get them working again was to log them out and back in, which worked 100% of the time at the cost of them losing any unsaved work. Here is a video of the issue to which I am referring:

After researching various fixes and causes it seems to be something to do with monitor resolution and/or changing the DPI (Make text larger or smaller in Display Settings) on Windows 7 specifically. I am unable to replicate the issue on my Windows 10 desktop, but on Windows 7 here was the process that seemed to cause the issue consistently. Log in at one DPI setting. Launch XA and a couple of published applications. On the desktop machine change the DPI setting and log out without logging your self out of your XA session. Log back into the machine and launch a published application. This should reconnect your session, and the black screen flashing should begin. I tried going back to my Windows 10 machine with a flashing black session and reconnecting, but the flashing continued.

EDIT: I posted this over at the Citrix XA 7 Forums (discussions.citrix.com/topic/391607-applications-flashing-between-monitors/?page=0#comment-1991810) and it does not seem to be getting any traction. Ugh!

EDIT 2: For the sake of completeness, I will post that the end resolution to this problem was the Citrix Receiver version. Ended up going back down to Windows v4.6 and that fixed it, and eventually up to 4.9 LTSR. The new Citrix Workspace app has not exhibited this problem either.