Re: Default Single DataCenter -> Multi DataCenter

2018-09-14 Thread Alain RODRIGUEZ
Hello, > Q. Isn't it a problem that at this point, DCAwareRobinPolicy and > RoundRobinPolicy coexist? Why not change it on all clients at once? But no, it should not be a problem as long as you have only 1 DC. Q1. Must I add the new seed nodes in five all existing nodes? > I generally pick 3

Re: Default Single DataCenter -> Multi DataCenter

2018-09-11 Thread Eunsu Kim
It’s self respond. Step3 is wrong. Even if it was a SimpleSnitch, changing the dc information will not start CassandraDaemon with the error log. ERROR [main] 2018-09-11 18:36:30,272 CassandraDaemon.java:708 - Cannot start node if snitch's data center (pg1) differs from previous data center (d

Re: Default Single DataCenter -> Multi DataCenter

2018-09-10 Thread Eunsu Kim
Hello Thank you for your responses. I’ll share my adding datacenter plan. If you see problems, please respond. The sentence may be a little awkward because I am so poor at English that I am being helped by a translator. I've been most frequently referred to.(https://medium.com/p/465e9bf28d99

Re: Default Single DataCenter -> Multi DataCenter

2018-09-10 Thread Pradeep Chhetri
Hello Eunsu, I am going through the same exercise at my job. I was making notes as i was testing the steps in my preproduction environment. Although I haven't tested end to end but hopefully this might help you: https://medium.com/p/465e9bf28d99 Regards, Pradeep On Mon, Sep 10, 2018 at 5:59 PM,

Re: Default Single DataCenter -> Multi DataCenter

2018-09-10 Thread Alain RODRIGUEZ
Adding a data center for the first time is a bit tricky when you haven't been considering it from the start. I operate 5 nodes cluster (3.11.0) in a single data center with > SimpleSnitch, SimpleStrategy and all client policy RoundRobin. > You will need: - To change clients, make them 'DCAware'.

Default Single DataCenter -> Multi DataCenter

2018-09-10 Thread Eunsu Kim
Hello everyone I operate 5 nodes cluster (3.11.0) in a single data center with SimpleSnitch, SimpleStrategy and all client policy RoundRobin. At this point, I am going to create clusters of the same size in different data centers. I think these two documents are appropriate, but there is confu