I mean you'd want to set up the initial tokens for the first 3 nodes of your cluster, which are usually the seed nodes.
On Sat, May 4, 2019 at 8:31 PM onmstester onmstester <onmstes...@zoho.com.invalid> wrote: > > So do you mean setting tokens for only one node (one of the seed node) is > fair enough? > I can not see any problem with this mechanism (only one manual token > assignment at cluster set up), but the article was also trying to set up a > balanced cluster and the way that it insist on doing manual token assignment > for multiple seed nodes, confused me. > > Sent using Zoho Mail > > > > ============ Forwarded message ============ > From: Jon Haddad <j...@jonhaddad.com> > To: <user@cassandra.apache.org> > Date: Sat, 04 May 2019 22:10:39 +0430 > Subject: Re: How to set up a cluster with allocate_tokens_for_keyspace? > ============ Forwarded message ============ > > That line is only relevant for when you're starting your cluster and > you need to define your initial tokens in a non-random way. Random > token distribution doesn't work very well when you only use 4 tokens. > > Once you get the cluster set up you don't need to specify tokens > anymore, you can just use allocate_tokens_for_keyspace. > > On Sat, May 4, 2019 at 2:14 AM onmstester onmstester > <onmstes...@zoho.com.invalid> wrote: > > > > I just read this article by tlp: > > https://thelastpickle.com/blog/2019/02/21/set-up-a-cluster-with-even-token-distribution.html > > > > Noticed that: > > >>We will need to set the tokens for the seed nodes in each rack manually. > > >>This is to prevent each node from randomly calculating its own token > > >>ranges > > > > But until now, i was using this recommendation to setup a new cluster: > > >> > > > > You'll want to set them explicitly using: python -c 'print( [str(((2**64 / > > 4) * i) - 2**63) for i in range(4)])' > > > > > > After you fire up the first seed, create a keyspace using RF=3 (or whatever > > you're planning on using) and set allocate_tokens_for_keyspace to that > > keyspace in your config, and join the rest of the nodes. That gives even > > distribution. > > > > I've defined plenty of racks in my cluster (and only 3 seed nodes), should > > i have a seed node per rack and use initial_token for all of the seed nodes > > or just one seed node with inital_token would be ok? > > > > Best Regards > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org > For additional commands, e-mail: user-h...@cassandra.apache.org > > > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
