Forum: CFEngine Help Subject: Re: CFEngine Help: Re: Load Balancing CFengine Server Author: milindk Link to topic: https://cfengine.com/forum/read.php?3,24633,24634#msg-24634
Pardon my poor understading here and please correct me I am wrong , some time I get confused between Hub and Policy servers , I am new to CFE I am assuming the enterprise setup I will have set of policy Hubs and policy servers and these can be same servers reading the snippet from doc -------------------------------------------------------------Start--------------------------------------------------------------------------------------------------- 3.5 Redundancy and load balancing in the Nova hub CFEngine does not need a `high availability' architecture to be an effective management system. The software was designed to work with very low availability, and the designers highly recommend avoiding the introduction of dependencies that require such availability. In normal operation, CFEngine will be able to continue to repair systems without any contact with the outside world, until actual policy changes are made. It is nonetheless possible to balance load and account for failures by multiplying the number of hubs/policy servers in a Nova star network. This only makes sense for the policy servers and reporting hubs, which are in principle single points of failure. Availability of policy in case of policy server failure. Availability of reports in case of reporting hub failure. Because CFEngine is a pull-based technology, the two processes look like this: Satellite `client' nodes pull policy from a policy server. Reporting hubs pull reports from all satellite clients. In both cases, the processes are `self-healing'. If a client is unable to connect to a policy server, it will continue to work with its old policy until the policy server becomes available again. If a report hub fails and reports are no longer accessible, no data are lost because the actual data are sourced from the satellite nodes. When the hub is replaced or restored, it will update and continue as before. ---------------------------------------------------------------------------------------End------------------------------------------------------------------------------------------------------------------ so Looks like client will not connect to reporting Hub but Hub Will initiate connection and since Hub is using Mongo DB replication set only one Hub is active at a time but hub is making outgoing connection to get reports so no LB involved The LB I wanted to install was between Client and Policy servers since client making connection of Pull they will connect to LB and LB and will be directed to any of the underlying server based on LB Algo I am assuming here I will be able to access reporting Hub Via Diff DNS name and not colide with Policy server name which will be my LB IP My assumption is completly based on policy server and policy hubs are two different entities , hope that is not the case _______________________________________________ Help-cfengine mailing list Help-cfengine@cfengine.org https://cfengine.org/mailman/listinfo/help-cfengine
