stat is not executed because it is not in the whitelist.

[centos@us-prod-sre-zookeeper-1 bin]$ echo conf | nc 10.0.3.113 2181
conf is not executed because it is not in the whitelist.

[centos@us-prod-sre-zookeeper-1 conf]$ vim zoo.cfg
4lw.commands.whitelist=*
#这代表允许使用所以命令

[centos@us-prod-sre-zookeeper-1 bin]$ ./zkServer.sh restart
ZooKeeper JMX enabled by default
Using config: /data/app/zookeeper/bin/../conf/zoo.cfg
ZooKeeper JMX enabled by default
Using config: /data/app/zookeeper/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
ZooKeeper JMX enabled by default
Using config: /data/app/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

[centos@us-prod-sre-zookeeper-1 bin]$ echo conf | nc 10.0.3.113 2181
clientPort=2181
secureClientPort=-1
dataDir=/data/zookeeper/version-2
dataDirSize=134218321
dataLogDir=/data/zookeeper/version-2
dataLogSize=134218321
tickTime=2000
maxClientCnxns=60
minSessionTimeout=4000
maxSessionTimeout=40000
serverId=1
initLimit=10
syncLimit=5
electionAlg=3
electionPort=3888
quorumPort=2888
peerType=0
membership: 
server.1=10.0.3.113:2888:3888:participant
server.2=10.0.3.121:2888:3888:participant
server.3=10.0.3.217:2888:3888:participant