My compliments to all of you for being adults, excessively kind, and definitely excessively nice.
*.......* *Daemeon C.M. ReiydelleUSA (+1) 415.501.0198London (+44) (0) 20 8144 9872* On Tue, May 2, 2017 at 5:08 PM, Steve Robenalt <sroben...@highwire.org> wrote: > Hi Roman, > > I'm assuming you were intending your first statement to be in jest, but > it's really not that hard to startup a Cassandra cluster. The defaults are > pretty usable, so if all you want to do is set the IPs and start it up, the > cluster probably will just take care of everything else. > > So I jest a little bit too. It's normally desirable to set up storage > properly for your database, and there's a few options for which you might > want to change the defaults, such as the snitch. > > Still, if that means you only need to take note of of a couple of IPs and > designate them as seeds so your cluster can mostly manage itself, you can > say that's sad, but I'd say it's a small price to pay for all that you > don't have to do. > > Steve > > On Mon, May 1, 2017 at 4:55 PM, Roman Naumenko <ro...@sproutling.com> > wrote: > >> Lol yeah, why >> I guess I run some ec2 instances, drop some cassandra deb packages on 'em >> - the thing will figure out how to run... >> >> Also, how would you get "initial state of the cluster" if the cluster... >> is being initialized? >> Or that's easy, according to the docs - just hardcode some seed IPs into >> each node, lol >> >> It's all kinda funny, but in a sad way. >> >> On Mon, May 1, 2017 at 4:45 PM, Jon Haddad <jonathan.had...@gmail.com> >> wrote: >> >>> Why do you have to figure out what’s up w/ them by accident? You’ve >>> gotten all the information you need. Seeds are used to get the initial >>> state of the cluster and as an optimization to spread gossip faster. >>> That’s it. >>> >>> >>> >>> On May 1, 2017, at 4:37 PM, Roman Naumenko <ro...@sproutling.com> wrote: >>> >>> 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?highl >>> ight=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 >>> 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 >>> Note the Address of the dead node; it is used in step 5. >>> >>> http://docs.datastax.com/en/cassandra/2.1/cassandra/initiali >>> ze/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> >>> 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> 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 >>> For additional commands, e-mail: user-h...@cassandra.apache.org >>> >>> >>> >>> >>> >>> >>> >> > > > -- > > > * Steve Robenalt Software Architect, HighWire Press, Inc. * > www.highwire.org| Los Gatos, CA| Belfast, NI| Brighton, UK > <https://www.linkedin.com/company-beta/1797/> > <http://twitter.com/highwirepress> > > *HighWire Summer Publishers' Meeting, London, June 12-13 > <omenji...@highwire.org?subject=Please%20register%20me%20for%20HighWire%20Summer%20Publishers'%20Meeting%20in%20London!>* > STM Annual US Conference, April 25-27: Michiel Klein Swormink and Jennifer > Chang are representing HighWire > <https://t.xink.io/Tracking/Index/XaoBAMZ_AAB-KCEA0> > 2017 CSE Annual Meeting: John Sack is presenting on topic of Piracy, May 23 > <https://t.xink.io/Tracking/Index/qKwBAMZ_AAB-KCEA0> > SSP Annual Meeting, May 31-June 2: *Visit HighWire on Booth #101A* > <https://t.xink.io/Tracking/Index/XaoBAMZ_AAB-KCEA0> > > > >
