![]() Each server or published application can have only one load evaluator attached. Each rule defines an operational range for the server or published application to which its evaluator is assigned. Each load evaluator contains one or more rules. XenApp calculates the load on a server using load evaluators and rules. The client starts a session on that server and launches the published application. Upon receiving the client’s request, XenApp selects the server with the lowest load and returns its address to the client. When a client selects a published application to run, the client contacts the server farm to locate the address of a server that hosts the published application. Qfarm # to see the XenApp servers in the farmĭscheck /clean – datastore validation for integrityĭsmaint config|recover|recreateLCH|verifyLHC – maintains datastoreĠ-9998 : Normal range for load managementġ0000 : load is 100%, no sessions will be acceptedĢ0000 : license mismatch or xenapp server has edition mismatchĩ9990 : Farm administrator with restricted rights Qfarm /load # if 10000, no response, 100% load WebInterface: Allowes user to access the applications hosted in citrix 2 types:Website and service site Stop the IMA service on the XenApp server, if it is started. ![]() The LHC is an Access database, Imalhc.mdb, stored by default in the C:\\Citrix\Independent Management Architecture folder. LHC (local Host Cache) : A local cache of the data store, which allows a server to function in the absence of datastore. XMS Service functions between Web Interface and IMA service XML Broker returns the address of the service rendering server to the Web Interface. Once the user is authenticated, the XML broker locates the server in the farm. This is done by Independent Management Architecture and returns to the Web Interface. XML Broker retrieves the applications which have user permissions to access. It receives the credentials of user from the Web Interface. XML broker:It works between the farm and Web Interface. Session Controller : participate in ZDC election process, so can be a ZDC or XML broker. Session Host: Can’t participate in ZDC election process, so can’t be ZDC or XML broker or Management server. XenApp 6.5 => A xenapp server can have two roles. Farms determine the data collector based on the election preferences set for a server. When the zone’s data collector fails, a data collector election occurs and another server takes over the data collector functionality. By default, the data collector is configured on the first server when you create the farm, and all other servers configured with the controller server mode have equal rights to become the data collector if the data collector fails. Data collectors relay information to all other data collectors in the farm. Data collectors receive incremental data updates and queries from servers within the zone. A farm may have multiple zones based on subnet/location, by default one zone.ĭatastores : Is the database which contain the static information related Xenapp farm which includes – published applications, users, printers, and servers, citrix GPOĭataCollector (ZDC): maintains dynamic information about the servers in the zone, such as server loads, session status, published applications, users connected, and license usage. Zone: A zone is a grouping of XenApp servers that communicate with a common data collector. ![]() IMA – 2512 (server to server)
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