Getting Started with Your First Topology - Real-time Analytics with Storm and Cassandra - page 35

◦ syncLimit : This is the number of ticks that can pass between sending
a request and getting an acknowledgement (for example, 2).
◦ dataDir : This is the directory where the snapshot is stored (for ex-
ample, /usr/local/zookeeper/tmp ).
◦ clientPort : This is the port at which the Zookeeper clients will con-
nect to the port (for example, 2182).
◦ server.id=host:port:port : Every machine that is part of the
Zookeeper ensemble should know about every other machine in the en-
semble. This is accomplished with the series of lines of the serv-
er.id=host:port:port form (for example, serv-
er.1:<IP_ADDRESS_OF_ZOOKEEPER_NODE_1>:2888:3888 ).
6. Repeat the preceding steps or copy the distribution to other machines that will be
part of the Zookeeper cluster.
7. Create a file with the name myid in the directory specified by the datadir
property. The myid file consists of a single line containing only the text of that
machine's ID (1 in the server and 1 in zoo.cfg ). So, myid of server 1 will con-
tain the text 1 and nothing else. The ID must be unique within the ensemble and
should have a value between 1 and 255. The path of the myid file in this case is
vi /usr/local/zookeeper/tmp/myid .
8. Edit the ~/.bashrc file and add an environment variable for the Zookeeper
home and add its bin directory to the PATH environment variable:
9. Source the ~/ . bashrc file after making changes. This step is required to make
sure that the changes that are made to bashrc are applied to the current terminal
session: