Github user jtstorck commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1246#discussion_r88740943
--- Diff: nifi-docs/src/main/asciidoc/administration-guide.adoc ---
@@ -1599,7 +1599,97 @@ java.arg.16=-Dsun.security.krb5.debug=true
This will cause the debug output to be written to the NiFi Bootstrap log
file. By default, this is located at _$NIFI_HOME/logs/nifi-bootstrap.log_.
This output can be rather verbose but provides extremely valuable
information for troubleshooting Kerberos failures.
+[[zookeeper_migrator]]
+=== ZooKeeper Migrator
+You can use the NiFi ZooKeeper Migrator to perform the following tasks:
+* Move ZooKeeper information from one ZooKeeper cluster to another
+* Migrating ZooKeeper node ownership
+
+For example, you may want to use the ZooKeeper Migrator when you are:
+
+* Upgrading from NiFi 0.x to NiFi 1.x in which embedded ZooKeepers are used
+* Migrating from an embedded ZooKeeper in NiFi 0.x or 1.x to an external
ZooKeeper
+* Upgrading from NiFi 0.x with an external ZooKeeper to NiFi 1.x with the
same external ZooKeeper
+* Migrating from an external ZooKeeper to an embedded ZooKeeper in NiFi 1.x
+
+The NiFi ZooKeeper Migrator (`zk-migrator.sh`) is part of the NiFi Toolkit
and is downloaded separately from the
+link:https://nifi.apache.org/download.html[Apache NiFi download page].
+
+[[zk_migrator_command_line_parameters]]
+==== zk-migrator.sh Command Line Parameters
+
+You can use the following command line options with the ZooKeeper Migrator:
+
+* `-a,--auth <username:password>` Allows the specification
of a username and password for authentication with ZooKeeper. This option is
mutually exclusive with the `-k,--krb-conf` option.
+* `-f,--file <filename>` The file to be used for
JSON data. When used with the `-r,--receive` option, data read from ZooKeeper
will be stored in the given filename. When used with the `-s,--send` option,
the data in the file will be sent to ZooKeeper.
--- End diff --
Suggest changing the first sentence to "The file used for ZooKeeper data
serialized as JSON."
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