The in-tree docs do not mention this anywhere, and even have some of the answers you’re asking:
https://cassandra.apache.org/doc/latest/faq/index.html?highlight=seed#what-are-seeds <https://cassandra.apache.org/doc/latest/faq/index.html?highlight=seed#what-are-seeds> The DataStax docs are maintained outside of the project, you’ll have to ask them why they’re wrong or misleading. Jon > On May 1, 2017, at 4:10 PM, Roman Naumenko <ro...@sproutling.com> wrote: > > The docs mention IP addresses everywhere. > > http://docs.datastax.com/en/archived/cassandra/2.0/cassandra/operations/ops_replace_seed_node.html > > <http://docs.datastax.com/en/archived/cassandra/2.0/cassandra/operations/ops_replace_seed_node.html> > Promote an existing node to a seed node by adding its IP address to -seeds > list and remove (demote) the IP address of the dead seed node from the > cassandra.yaml file for each node in the cluster. > > http://docs.datastax.com/en/archived/cassandra/2.0/cassandra/operations/ops_replace_node_t.html > > <http://docs.datastax.com/en/archived/cassandra/2.0/cassandra/operations/ops_replace_node_t.html> > Note the Address of the dead node; it is used in step 5. > > http://docs.datastax.com/en/cassandra/2.1/cassandra/initialize/initializeSingleDS.html > > <http://docs.datastax.com/en/cassandra/2.1/cassandra/initialize/initializeSingleDS.html> >> Properties to set: >> num_tokens: recommended value: 256 >> -seeds: internal IP address of each seed node > > I saw also hostnames mentioned few times, but it just makes it even more > confusing. > > — > Roman > >> On May 1, 2017, at 3:50 PM, Jon Haddad <jonathan.had...@gmail.com >> <mailto:jonathan.had...@gmail.com>> wrote: >> >> Sure, you could use DNS. Where does it say IP addresses are a requirement? >> >>> On May 1, 2017, at 1:36 PM, Roman Naumenko <ro...@sproutling.com >>> <mailto:ro...@sproutling.com>> wrote: >>> >>> If I understand how Cassandra nodes work, they must contain a list of >>> seed’s IP addressed in config file. >>> >>> This requirement makes cluster setup unnecessarily complicated. Is it >>> possible to use DNS name for seed nodes? >>> >>> Thanks, >>> >>> — >>> Roman >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org >>> <mailto:user-unsubscr...@cassandra.apache.org> >>> For additional commands, e-mail: user-h...@cassandra.apache.org >>> <mailto:user-h...@cassandra.apache.org> >>> >> >
