Hi, We were also facing the same issue, this is how we resolved it:
Before starting the ZK server, add the following to zkServer.sh - "-Dzookeeper.skipACL=yes" This will skip the ACL authentication and you will be able to use reconfig command. Albeit this comes with a risk as you removes all authentication. Hope this helps! -- Sent from: http://zookeeper-user.578899.n2.nabble.com/