zookeeper cluster configuration

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/tmp/zookeeper
# the port at which the clients will connect
clientPort=2180
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
# autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1
server.1=10.91.227.172:2888:3888
server.2=10.91.227.173:2889:3889
server.3=10.91.227.173:2890:3890


Create
echo '1' > myid
echo '2' > myid
echo '3' > myid in the dataDir directory

and delete other .pid files.
Restart

pass ./zkServer. sh status to view the roles in the cluster:

ZooKeeper JMX enabled by default
Using config: /app/tools/zookeeper-3.4.8/bin/../conf/zoo.cfg
Mode: follower