Well, I guess I have to figure out what’s up with IPs/hostnames by experiment. Information about service discovery is practically absent. Not to mention all important details about fqdns/hostnames, automatic replacing seed nodes or what not.
— Roman > On May 1, 2017, at 4:14 PM, Jon Haddad <jonathan.had...@gmail.com> wrote: > > 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 >> <mailto: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> >>>> >>> >> >
