This includes DNS. Delivery Controller. The Delivery Controller is the real workhorse and centerpiece of the FMA and, as such, it has a lot of responsibilities. To name a few, it brokers VDA sessions, verifies user credentials and plays an important role during user login and resource enumeration as well as launch.
As of version 7. Here they are:. Each service has its own specific responsibility. Authentication and enumeration. When a user logs in, either internally through StoreFront or externally throughNetScaler, for example, as mentioned the Delivery Controller plays an important role during the user authentication and verification process, as well as with enumerating and launching user resources.
This process is also referred to as connection brokering. A Delivery Controller has a direct and live connection with the Central Site database, which holds all static as well as dynamic real-time information within the Site. As opposed to the Data Collectors in XenApp 6. Communication between a Delivery Controller and the Central Site database is constant heartbeat messages are exchanged every 20 seconds with a TTL of 40 seconds. The Delivery Controller also plays a key role in controlling all registered desktop and server machines to which your users connect with regard to availability, load balancing, and power management, which includes starting and stopping virtual machines when needed: see also the next chapter on VDAs.
Note that power management is not available for physical machines, only virtual. One is none. The same applies to the Delivery Controller. Therefore at least two Delivery Controller servers per Site should be deployed on different physical hosts when virtualized to prevent a single point of failure.
All Controllers within a Site have access to the same Central Site database and therefore are equally configured. FMA fact : Your environment is as strong as its weakest link. A Delivery Controller is different from a Data Collector in many ways. Besides the absence of the Local Host Cache, Delivery Controllers do not communicate with each other, they cannot host any user sessions like a Data Collector can, and as such, they also do not have to run the same Operating System as the VDAstheymanage.
See the next page for an overview table on some of the most important differences between the two. Note: the Delivery Controller software must already be installed on that second machine. Then click Save. If you installed Licensing with your Delivery Controller, then simply enter localhost. If the Certificate Authentication appears, select Connect me , and click Confirm.
Then select your license, and click Next. In the Summary page, if your databases are mirrored or in an Availability Group, each database will show high availability servers , and the name of the Mirror server. Click Finish. It will take some time for the site to be created. Change the database names if desired, and click Next. In the Summary page, click Generate scripts. A folder will open with six scripts. Edit each of the scripts. Near the top of each script are two lines to create the database.
Uncomment both lines including the go line. Then save and close the file. Once all of the scripts are edited, you can send them to your DBA. Then execute the script. Back in Citrix Studio, click the Continue database configuration and Site setup button. In the Summary page, if your databases are mirrored, each database will show high availability servers , and the name of the Mirror server. Verify Database Mirroring If your database is mirrored, when you run asnp citrix.
Second Controller When building the first Delivery Controller, the scripts might have already included the second Delivery Controller. On the second Delivery Controller, install XenDesktop as detailed earlier. Enter the name of the first Delivery Controller, and click OK. Click Generate scripts. If not mirroring, then the top three scripts need to be sent to a DBA.
If mirroring, send all six. On the SQL Server, open one of the. Then execute the XenDesktop script. Back in Citrix Studio, click OK. You can also test the site again if desired. This can be an internally-signed certificate if the StoreFront server trusts internally-signed certificates.
Open a command prompt as administrator. Double-click the certificate you want to bind. On the Details tab, scroll down to Thumbprint and copy the thumbprint. Remove the special character at the beginning of the thumbprint. Remove the spaces. Make sure the GUID has curly braces on both sides with no space between appid and the left curly brace.
If you entered everything correctly, then it should say SSL Certificate successfully added. The Docs article has scripts for monitoring LHC performance. Site will sort itself out and all will work. If the rebooted DDC is not the elected one, it will not impact any functionality.
In that scenario it will take control, however not start LHC and resources would not be available. The Site database has many more roles than the Logging and Monitoring databases. This script contains common functions that the other scripts use. This script prompts for the failover partner location FQDN for each database. Providing a blank failover partner removes the failover partner. You can also use the ClearPartner option to remove a partner.
Do not set the failover partner to the same location as the principal database server. This script ensures that certain Citrix services are up and running, and then updates those services in the correct order on all Controllers in the site. Enclose connection string information for each database in quotes. This option speeds up recovery when a high availability event occurs, and is recommended for both single and multi-subnet environments.
Run this script once to add the option. Run the script again to remove it. This is useful if something has gone wrong and a reset is needed. After the reset, you can try again to set the connection strings. Remove the existing Database connections At the Delivery Controller, open PowerShell as Administrator and run the following commands to clear the existing database connections.
Load the Citrix snap-ins asnp Citrix. Run Set-MonitorConfiguration to change the grooming settings. On the Administrators tab, right-click, and click Create Administrator. In the Administrator and Scope page, Browse to a group e. Citrix Admins that will have permissions to Studio and Director. These groups typically have access to all objects, so select the All scope. Alternatively, you can create a Scope to limit the objects. On the Role page, select a role, and then click Next.
Select the All scope. And click Next. In the Summary page, click Finish. When administrators in the Help Desk role log into Director, all they see is this.
To jazz it up a little, add the Help Desk group to the read-only role. In the Scope page, select a scope, and click Next. Then click OK. Now Director will display the dashboard. If desired, you can disable it in Citrix Studio: On the left, go to the Configuration node. On the right, switch to the Product Support tab.
Click End. Click Yes. On the bottom right, click Download trusted root CA certificates. Extract the downloaded files. Sort the files by date, and double-click the newest. On the General tab, click Install Certificate. In the Certificate Store page, click Browse. If you close your browser and reopen it, and then go to the vCenter URL, there should no longer be any certificate errors.
Skip to the Hosting Resource section. Import vCenter Certificate If the vCenter certificate is valid and trusted, then you can skip to the Hosting Resource section. Get the vCenter certificate. Open a browser and point it to the vCenter URL.
On the top right, click the two right arrows to show more tabs, and click Security. On the Security tab, click View certificate. On the Details tab, click Copy to File. In the Export File Format page, either format will work. In the File to Export page, browse to a new file, and click Next. If your Delivery Controller is Windows R2 or newer, then simply run certlm. For Windows R2, run mmc.
Move the Certificates snap-in to the right by highlighting it, and clicking Add. Select Computer account , and click Next. Select Local computer , and click Finish. Click OK. In the File to Import page, browse to the certificate you saved earlier, and click Next. In the Certificate Store page, click Next. Click OK to acknowledge that the import was successful. Repeat these steps on the second Controller. It is important that you import the certificate on both Controllers before adding the Hosting Resource.
If you open Internet Explorer and browse to the vCenter Server, there should be no certificate errors. Hosting Resources 7. In Studio, expand Configuration and click Hosting. Right-click it, and click Add Connection and Resources. Enter credentials of a service account that can log into vCenter. In the Connection name field, give the connection a name. Typically, this matches the name of the vCenter server.
If you are not using Machine Creation Services, and instead only need the vCenter connection for machine power management, change the Create virtual machines using selection to Other Tools. If you see a message about the vCenter certificate, check the box next to Trust certificate , and click OK. Note: this vCenter certificate thumbprint is stored in the XenDesktop database, and is not updated when the vCenter certificate changes. See CTX Cannot connect to the VCenter server due to a certificate error for instructions on manually updating the database with the new certificate thumbprint.
Also see CTX Xendesktop 7. Alternatively, you can import the vCenter certificate to Trusted People on every Controller. In the Storage Management page, click Browse , and select a vSphere cluster. Select Use storage shared by hypervisors. If you have sufficient disk space on each ESXi host, also select Optimize temporary data on available local storage.
From Mark Syms at XA 7. For maximum flexibility, only select one datastore. To select additional datastores, run this wizard again to create a separate Hosting Resource. If you selected the temporary data on local storage option, on the bottom, click Select , and choose the datastores you want to use for disk caching.
By default, all local datastores are selected. Click Next when done. In the Network page, enter a name for the hosting resource. Since each hosting resource is a combination of vCenter, Cluster, Network, and Datastores, include those names in this field e.
Select a network and click Next. If you have multiple datastores for your VDAs, run the wizard again. You can use the existing vCenter connection.
Launch PowerShell from a Delivery Controller, load the Citrix snapins and then run the eviction script. Open the text file. The text file contains a SQL script which now must be run against the site database. Copy the file to your SQL server. Firstly take a backup of your Citrix Site database.
Paste the script in to a SQL Query and then execute. You should receive notification that the controller has been removed from the Citrix site. If you receive any messages about failing to remove services from the controller, run the relevant SQL stored procedure to remove the service references manually. Now when browsing Citrix Studio, the controller no longer appears.
Hi John this should be run on the principal. The DDC information should only be held in your Site database so reference that name in the script. In my cased the Delivery Controller is not orphaned, however I do need to add it back in to the site. When I launch Studio to do so I get the following message. How many Citrix Delivery Controllers are there?
What happens if Citrix license server goes down? What is Citrix architecture? What are the components of Citrix? What is Citrix for dummies? What does Citrix VDA mean? What is localhost cache? What does an application delivery controller do? How do I add a delivery controller to Citrix studio?
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