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opsi manual opsi version 4.0.2 17.6 Processing 133 / 193 If the dynamic depot assignment is activated for a client by the host parameter clientconfig.depot.dynamic, the client retrieves the script via web service and executes it. The script to be used for dynamic assignment is: /etc/opsi/backendManager/extend.d/70_dynamic_depot.conf Following parameters are passed to the function selectDepot, which is defined in the script: • clientConfig Information about the current client configuration (hash). The clientConfig hash keys are currently: – "clientId": opsi host ID of the client (FQDN) – "ipAddress": IP address of the network interface to the opsi-config-server – "netmask" : netmask of the network interface – "defaultGateway": default gateway • masterDepot Information regarding the master depot (opsi-depot-server-object). The master depot is the depot which the client is assigned to from the management interface. The attributes of the passed opsi-depot-server-object match the attributes as given by host_getObjects (see Section 17.4). • alternativeDepots Information about the alternative depots (list of opsi-depot-server-objects). The list of alternative depots lists the depots, which are, regarding the required software packets, identical to the master depot. Based on this information, the assignment algorithm can pick a depot from the provided depot list and return the opsi-depot-server-object of the chosen depot as the result of the function. If the assignment algorithm does not find a suitable depot from the list (or if the provided list is empty), the return result should be the master depot object. 17.7 Template of the assignment script The template script checks the network addresses of the given depots and picks the depot which is in the same network as the client. The template script offers example functions for depot detection. The function depotSelectionAlgorithmByNetworkAddress checks the network addresses of the depots and selects the depot which is in the same network as the client. The function depotSelectionAlgorithmByLatency sends ICMP „echo-request“-packets (ping) to the depots and selects the depot with the lowest latency. The function getDepotSelectionAlgorithm is called by the client and returns the algorithm for depot selection. The template script uses as default the function depotSelectionAlgorithmByNetworkAddress. # -*- coding: utf-8 -*- global depotSelectionAlgorithmByNetworkAddress depotSelectionAlgorithmByNetworkAddress = \ ’’’ def selectDepot(clientConfig, masterDepot, alternativeDepots=[]): selectedDepot = masterDepot logger.info(u"Choosing depot from list of depots:") logger.info(u" Master depot: %s" % masterDepot) for alternativeDepot in alternativeDepots: logger.info(u" Alternative depot: %s" % alternativeDepot) if alternativeDepots: import socket, struct # Calculate bitmask of host’s ipaddress
opsi manual opsi version 4.0.2 ’’’ n = clientConfig[’ipAddress’].split(’.’) for i in range(4): n[i] = forceInt(n[i]) ip = (n[0]
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