connect

ZooKeeper connection string used by other services or clusters. It is generated automatically

 — 

dataDir

Location where ZooKeeper stores the in-memory database snapshots and, unless specified otherwise, the transaction log of updates to the database. It is specified as the dataDir parameter in the zoo.cfg configuration file

/var/lib/zookeeper

clientPort

Port to listen for client connections, that is the port that clients attempt to connect to

2181

Port that the embedded Jetty server listens on

5181

Enables Admin server — an embedded Jetty server that provides an HTTP interface to the four-letter-word commands

Disabled

tickTime

Length of a single tick (in milliseconds) which is the basic time unit used by ZooKeeper to regulate heartbeats and timeouts

2000

initLimit

Amount of time (in ticks) to allow followers to connect and sync with a leader. Increase this value as needed if the amount of data managed by ZooKeeper is large

5

syncLimit

Amount of time (in ticks) to allow followers to sync with ZooKeeper. If followers fall too far behind a leader, they will be dropped

2

maxClientCnxns

Limits the number of active connections from a single client, identified by IP address, to a single member of the ZooKeeper ensemble

0

autopurge.snapRetainCount

When enabled, ZooKeeper auto-purge feature retains the specified number of the most recent snapshots and the corresponding transaction logs in dataDir and dataLogDir respectively, and deletes the rest. The minimum value is 3

3

autopurge.purgeInterval

Time interval (in hours), for which the purge task has to be triggered. Set a positive integer to enable the auto purging

24

Add key,value

In this section, you can define values for custom parameters that are not displayed in ADCM UI, but are allowed in the zoo.cfg configuration file

 — 

Enable SSL

Enables secure incoming connections in ZooKeeper

Disabled

sslQuorum

Enables encrypted quorum communication

Disabled

serverCnxnFactory

Specifies ServerCnxnFactory implementation. To use TLS-based server communication, set it to NettyServerCnxnFactory

org.apache.zookeeper.server.NettyServerCnxnFactory

ssl.quorum.keyStore.location

Fully-qualified path to the server keystore file

/etc/zookeeper/server.jks

ssl.quorum.keyStore.password

Password for the keystore specified in ssl.quorum.keyStore.location

 — 

ssl.quorum.trustStore.location

Fully-qualified path to the server truststore file

/etc/zookeeper/ca.jks

ssl.quorum.trustStore.password

Password for the truststore specified in ssl.quorum.trustStore.location

 — 

ssl.keyStore.location

Fully-qualified path to the server keystore file to be used for client TLS connections

/etc/zookeeper/server.jks

ssl.keyStore.password

Password for the keystore specified in ssl.keyStore.location

 — 

ssl.trustStore.location

Fully-qualified path to the server truststore file to be used for client TLS connections

/etc/zookeeper/ca.jks

ssl.trustStore.password

Password for the truststore specified in ssl.trustStore.location

 — 

ssl.protocol

Protocol to be used in client TLS negotiation

TLSv1.2

ssl.quorum.protocol

Protocol to be used in quorum TLS negotiation

TLSv1.2

secureClientPort

Port to be used for secure client connections

2281

Listen port

Port to listen for Zookeeper service metrics

9020

JAVA

Path to Java

$JAVA_HOME/bin/java

ZOOPIDFILE

Directory to store the ZooKeeper process ID

/var/run/zookeeper/zookeeper_server.pid

ZOO_LOG_DIR

Directory to store logs

/var/log/zookeeper

SERVER_JVMFLAGS

Used to set different JVM parameters (for example, parameters related to garbage collection)

-Xmx1024m