Probably also ensure port 7000 for the nodes to be reachable between nodes.
Jason On Tue, Mar 12, 2013 at 4:11 AM, Dane Miller <d...@optimalsocial.com> wrote: > Hi, > > I'd like to resurrect this thread from April 2012 - > > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/migrating-from-SimpleStrategy-to-NetworkTopologyStrategy-td7481090.html > - "migrating from SimpleStrategy to NetworkTopologyStrategy" > > We're in a similar situation, and I'd like to understand this more > thoroughly. In preparation for adding another datacenter to our > cassandra cluster, I'd like to migrate from EC2Snitch + SimpleStrategy > to GosspingPropertyFileSnitch + NetworkTopologyStrategy. Here are the > steps I'm planning: > > Change the Snitch > 1. set endpoint_snitch: GosspingPropertyFileSnitch in cassandra.yaml > 2. configure cassandra-rackdc.properties to use a single rack and > datacenter,: rack=RAC1, dc=dc1 > 3. do a rolling restart of all nodes > > Change replication strategy > 4. for all keyspaces (except system*), alter keyspace ... with > replication = {'class' : 'NetworkTopologyStrategy', 'dc1' : 3} > 5. run "nodetool repair -pr" on all nodes > > Does this look right? Also, I'm curious whether/why step 5 is > necessary, given the single rack configuration. > > Versions: > cassandra 1.2.2 > dsc12 1.2.2-1 > Ubuntu 12.04, x86_64 > Datastax AMI > > Thanks! > > Dane >
