CODEWITHSUNDEEP
javaapache-zookeeper
user1
user1

Reputation: 499

Exception in thread "main" java.net.UnknownHostException:

i'm new to zookeeper and started to run zookeeper and got this 

Exception in thread "main" java.net.UnknownHostException: zoo1
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:848)

my zoo.cfg 

tickTime=2000
dataDir=/home/st/storm/datadir/zookeeper
clientPort=2181
initLimit=5
syncLimit=2 
server.1=zoo1:2888:3888 
server.2=zoo2:2888:3888 
server.3=zoo3:2888:3888

my /etc/hosts is 

127.0.0.1       localhost  
127.0.1.1   ubuntu

# The following lines are desirable for IPv6 capable hosts

::1 ip6-localhost ip6-loopback 
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix 
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters 
ff02::3 ip6-allhosts

Upvotes: 0

Views: 1645

Answers (1)

Morgan Kenyon
Morgan Kenyon

Reputation: 3172

The problem is that in your zoo.cfg you have the following lines

server.1=zoo1:2888:3888 
server.2=zoo2:2888:3888 
server.3=zoo3:2888:3888

zoo1, zoo2 and zoo3 need to be replaced with actual IP addresses. Such as,

server.1=192.168.1.100:2888:3888 
server.2=192.168.1.101:2888:3888 
server.3=192.168.1.102:2888:3888

Or whatever the actual IP addresses that your zookeeper nodes are located at.

EDIT

If you only have zookeeper running on one machine and therefore one ip address. You would change the config to be something similar.

server.1=192.168.1.100:2888:3888

Since you only have one ip address you only need one entry in configuration. The number of zookeeper nodes you have is up to you to decide, 3 isn't a magic number. Though the more machines you you'll have more redundancy.

Upvotes: 1

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