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Hide Citrix Session

Chai published on  included in My Troubleshooting
Issue: User clicks on an app in netscaler gateway portal. It shows cannot start app APPNAME for all the apps in the netscaler gateway portal. Troubleshooting: Citrix DDC event viwer shows The citrix broker service failed to broker a connection for user DOMAIN\USERID to resource APPNAME. The virtual machine VDI1.company.com rejected a request to prepare itself for a connection. This problem usually indicates that the VM is engaged in an activity such as restarting, entering a suspended state or processing a recent disconnection or logoff.

NetScaler High Availability File Synchronization - IMP

Chai published on  included in NetScaler IMP Posts
During a high availability file synchronization operation, a set of files are copied from the primary appliance to the secondary appliance. The high availability setup is synchronized automatically at an interval of one minute or when you manually run the sync ha files command. The secondary appliance initiates the high availability synchronization. The rsync process completes the high availability file synchronization and the nsfsyncd process controls the synchronization. The rsync process uses an SSH tunnel for file synchronization, but the default SSH port 22 can be updated when running the rsync process.

Netscaler High Availability Synchronization - IMP

Chai published on  included in NetScaler IMP Posts
High availability synchronization is the process by which configurations are kept identical between the appliances. It is not the process that runs individual commands on the secondary appliance after successful completion on the primary appliance, that is called Command Propagation and while the two are similar in function, they perform different functions. High availability synchronization is used as a failsafe method of keeping configurations between the appliances synchronized whether the command propagation is successful or not.

SQL Server Evaluation Time expired. SQL service wont start. Event 17051

Chai published on  included in Tech Articles
There may be times when you want to test the SQL server instance first and then purchase a license key after your testing is successful. When you want to apply license key, you have to do it, at least one day before your evaluation time expires. If your expiration date is crossed, your SQL service will not start. SQL Server Evaluation Expired Eventlog When you try to change the SQL server instance from evaluation to full using a license key, through GUI or command line, it tries to check the SQL service status first.

PiHole Custom Block Page

Chai published on  included in Tech Articles
Follow the below steps to create a custom block page for blocked sites in pihole for HTTP sites: In terminal, run sudo nano /etc/pihole/pihole-FTL.conf If you do not have this file, create a file with the same name in the same path. If it is already there, you will see PRIVACYLEVEL=0 in the file already. Add BLOCKINGMODE=IP-NODATA-AAAA to it, save and close. Pihole-FTL Restart the PiHole-FTL service: sudo service pihole-FTL restart

Citrix application disappears after clicking on ica file

Chai published on  included in My Troubleshooting
We’ve seen an issue recently: Users login to netscaler gateway url and click on the application. It shows the steps like connection in progress, loading profile, negotiating capabilities, processing group policies etc, and immediately disappears. Troubleshooting: In Citrix director, under trends, logon performance. Check the logon performance time for the users who had this issue. In the delivery group option, you can select the delivery group that the faulty application is part of, and look for the login time for the users.

Sample Citrix GSLB site

Chai published on  included in XenApp and XenDesktop 7.X NetScaler IMP Posts Architecture XA and XD Netscaler Architecture
Let’s look at steps on configuring a Citrix high available site for applications. These are high level steps only. Not a step by step article. Based on your user count and how critical is the application, create 4 DDCs. Two in North India Datacenter, and two in south India datacenter (or you can create 1 in each datacenter). Similarly, create storefront servers as well. All storefront servers should have all DDCs added under manage delivery controllers section.

Documentation Practices

Chai published on  included in XenApp and XenDesktop 7.X
Below are some of the documentation practices that I came across. Create documentation as you design and implement something new in the environment. From Owen’s mycugc post, Check if you pass Bus Test. When you write a script add a help section explaining what it does. Similarly, when you implement a scheduled task, update the description with what it does. When you create service accounts, in the description, always explain why that account is created, where is its password saved (like keepass etc).

Black square rectangle on citrix applications or Citrix application flicker on accessing the app

Chai published on  included in My Troubleshooting
Issue: When users try to open the application, they get a black rectangle screen instead of the whole application. Cause: The issue could be because of the monitor(s) that users attached to their laptop (or desktop). Ask users to remove all the external monitors and test launch the application on their laptop screen alone. Solution: All the monitors that users connect to their laptop, should have the same monitor scaling and it should be less than or equal to 150%.