If you run it in a container with dedicated IPs it'll work just fine. Just be sure you aren't using the same machine to replicate it's own data.
On Thu, May 21, 2015 at 12:43 PM Manoj Khangaonkar <khangaon...@gmail.com> wrote: > +1. > > I agree we need to be able to run multiple server instances on one > physical machine. This is especially necessary in development and test > environments where one is experimenting and needs a cluster, but do not > have access to multiple physical machines. > > If you google , you can find a few blogs that talk about how to do this. > > But it is less than ideal. We need to be able to do it by changing ports > in cassandra.yaml. ( The way it is done easily with Hadoop or Apache Kafka > or Redis and many other distributed systems) > > > regards > > > > On Thu, May 21, 2015 at 10:32 AM, Dan Kinder <dkin...@turnitin.com> wrote: > >> Hi, I'd just like some clarity and advice regarding running multiple >> cassandra instances on a single large machine (big JBOD array, plenty of >> CPU/RAM). >> >> First, I am aware this was not Cassandra's original design, and doing >> this seems to unreasonably go against the "commodity hardware" intentions >> of Cassandra's design. In general it seems to be recommended against (at >> least as far as I've heard from @Rob Coli and others). >> >> However maybe this term "commodity" is changing... my hardware/ops team >> argues that due to cooling, power, and other datacenter costs, having >> slightly larger nodes (>=32G RAM, >=24 CPU, >=8 disks JBOD) is actually a >> better price point. Now, I am not a hardware guy, so if this is not >> actually true I'd love to hear why, otherwise I pretty much need to take >> them at their word. >> >> Now, Cassandra features seemed to have improved such that JBOD works >> fairly well, but especially with memory/GC this seems to be reaching its >> limit. One Cassandra instance can only scale up so much. >> >> So my question is: suppose I take a 12 disk JBOD and run 2 Cassandra >> nodes (each with 5 data disks, 1 commit log disk) and either give each its >> own container & IP or change the listen ports. Will this work? What are the >> risks? Will/should Cassandra support this better in the future? >> > > > > -- > http://khangaonkar.blogspot.com/ >
