On 2/24/11 9:42 AM, "Mukarram Syed" <mukarram.s...@8x8.com> wrote: > This is a good suggestion, but unfortunately I have inherited a CF2 > environment and so I have to learn it. We will be moving to CF3 in the near > future. But the task in my hand is to migrate the CF2 infrastructure to a new > data center (the 3rd data center). We have CF2 running on 2 data centers. > Hence these questions. > I have read through the Automating Unix and Linux Second Edition which covers > CF2 and couldn't find quite the answers I was looking for. I have also > skimmed through the CF2 Reference Manual and the CF2 Tutorial as well.
Many are and will be caught in this transitory phase for the next year or so. The press and latest docs have all aligned with CF3, but even after attending conferences and talking to others who have... CF2 will be used into the foreseeable future in many large enterprises. It would be good if a vendor could honestly admit this. It's not a CF problem mind you... Cisco, for example, is the same way (use the latest, use the latest!). There used to be several sites I could point you to that cover exactly this, scaling cf2 to multiple data centers. There are different approaches you can take, depending mostly on the number of clients and bandwidth. What we built was a "middle of the road" approach. First, we deployed one large central cluster (several cfservd hosts behind a load balancer), which also serves smaller sites over the WAN. The main site has around 1000 managed nodes, with smaller sites hosting significantly less (100-200). When we started building larger data centers similar in size to our first site, we replicated the large load balanced cluster and used copy statements to slurp down workdir from the main VIP. This gave us local cfservds at each of our larger sites, saving WAN bandwidth + latency. Within our policies, we simply AllowRedefinitionOf things like policyhost, so each of the larger sites point clients to the local VIP. Good luck! _______________________________________________ Help-cfengine mailing list Help-cfengine@cfengine.org https://cfengine.org/mailman/listinfo/help-cfengine
