I did something similar for my installation, but I used ENV variables: I created a directory on a machine (call this the master) with directories for all of the distributions (call them slaves). So, consider:
/master/slave1 /master/slave2 ... /master/slaven then i rdist this to all of my slaves. In the /master directory all of the standard cassandra distribution. In the /master/slave* directory all of the machine dependent stuff. Also in /master I have a .profile with: -bash-4.1$ cat /master/.profile # export CASSANDRA_HOME=$HOME/run SHOST=`hostname | sed s'/\..*//'` export CASSANDRA_CONF=$CASSANDRA_HOME/conf/$SHOST export CASSANDRA_INCLUDE=$CASSANDRA_HOME/conf/$SHOST/cassandra.in.sh . $CASSANDRA_HOME/conf/cassandra-env.sh PATH=$HOME/run/bin:$PATH echo 'to start cassandra type cassandra' this leaves me with this environment on each slave (slave1 example): -bash-4.1$ env | grep CAS CASSANDRA_HOME=/usr/share/cassandra/run CASSANDRA_CONF=/usr/share/cassandra/run/conf/slave1 CASSANDRA_INCLUDE=/usr/share/cassandra/run/conf/slave1/cassandra.in.sh Using this technique I maintain my Cassandra cluster on 1 machine and rdist to the participants. Rdist makes each node independent..... -greg On Sun, Jun 24, 2012 at 1:11 PM, aaron morton <aa...@thelastpickle.com> wrote: > Idea is to avoid having the copies of cassandra code in each node, > > If you run cassandra from the NAS you are adding a single point of failure > into the system. > > Better to use some form of deployment automation and install all the > requirement components onto each node. > > Cheers > > ----------------- > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 22/06/2012, at 12:29 AM, Flavio Baronti wrote: > > The option must actually include also the name of the yaml file: > > Dcassandra.config=file:///Users/walmart/Downloads/Cassandra/Node2-Cassandra1.1.0/conf/cassandra.yaml > > > Flavio > > > Il 6/21/2012 13:16 PM, Roshni Rajagopal ha scritto: > > Hi Folks, > > > We wanted to have a single cassandra installation, and use it to start > cassandra in other nodes by passing it the cassandra configuration > directories as a parameter. Idea is to avoid having the copies of cassandra > code in each node, and starting each node by getting into bin/cassandra of > that node. > > > > As per http://www.datastax.com/docs/1.0/references/cassandra, > > We have an option –D where we can supply some parameters to cassandra. > > Has anyone tried this? > > Im getting an error as below. > > > walmarts-MacBook-Pro-2:Node1-Cassandra1.1.0 walmart$ bin/cassandra > -Dcassandra.config=file:///Users/walmart/Downloads/Cassandra/Node2-Cassandra1.1.0/conf > > walmarts-MacBook-Pro-2:Node1-Cassandra1.1.0 walmart$ INFO 15:38:01,763 > Logging initialized > > INFO 15:38:01,766 JVM vendor/version: Java HotSpot(TM) 64-Bit Server > VM/1.6.0_31 > > INFO 15:38:01,766 Heap size: 1052770304/1052770304 > > INFO 15:38:01,766 Classpath: > bin/../conf:bin/../build/classes/main:bin/../build/classes/thrift:bin/../lib/antlr-3.2.jar:bin/../lib/apache-cassandra-1.1.0.jar:bin/../lib/apache-cassandra-clientutil-1.1.0.jar:bin/../lib/apache-cassandra-thrift-1.1.0.jar:bin/../lib/avro-1.4.0-fixes.jar:bin/../lib/avro-1.4.0-sources-fixes.jar:bin/../lib/commons-cli-1.1.jar:bin/../lib/commons-codec-1.2.jar:bin/../lib/commons-lang-2.4.jar:bin/../lib/compress-lzf-0.8.4.jar:bin/../lib/concurrentlinkedhashmap-lru-1.2.jar:bin/../lib/guava-r08.jar:bin/../lib/high-scale-lib-1.1.2.jar:bin/../lib/jackson-core-asl-1.9.2.jar:bin/../lib/jackson-mapper-asl-1.9.2.jar:bin/../lib/jamm-0.2.5.jar:bin/../lib/jline-0.9.94.jar:bin/../lib/json-simple-1.1.jar:bin/../lib/libthrift-0.7.0.jar:bin/../lib/log4j-1.2.16.jar:bin/../lib/metrics-core-2.0.3.jar:bin/../lib/mx4j-tools-3.0.1.jar:bin/../lib/servlet-api-2.5-20081211.jar:bin/../lib/slf4j-api-1.6.1.jar:bin/../lib/slf4j-log4j12-1.6.1.jar:bin/../lib/snakeyaml-1.6.jar:bin/../lib/snappy-java-1.0.4.1.jar:bin/../lib/snaptree-0.1.jar:bin/../lib/jamm-0.2.5.jar > > INFO 15:38:01,768 JNA not found. Native methods will be disabled. > > INFO 15:38:01,826 Loading settings from > file:/Users/walmart/Downloads/Cassandra/Node2-Cassandra1.1.0/conf > > ERROR 15:38:01,873 Fatal configuration error error > > Can't construct a java object for > tag:yaml.org,2002:org.apache.cassandra.config.Config; exception=No single > argument constructor found for class org.apache.cassandra.config.Config > > in "<reader>", line 1, column 1: > > cassandra.yaml > > > The other option would be to modify cassandra.in.sh. > > Has anyone tried this?? > > > Regards, > > Roshni > > > This email and any files transmitted with it are confidential and intended > solely for the individual or entity to whom they are addressed. If you have > received this email in error destroy it immediately. *** Walmart > Confidential *** > > > > > >
