1 Star 0 Fork 9

OpenSource / kafka-manager

加入 Gitee
与超过 1200万 开发者一起发现、参与优秀开源项目,私有仓库也完全免费 :)
免费加入
克隆/下载
贡献代码
同步代码
取消
提示: 由于 Git 不支持空文件夾,创建文件夹后会生成空的 .keep 文件
sbt
Loading...
README
Apache-2.0

CMAK (Cluster Manager for Apache Kafka, previously known as Kafka Manager)

CMAK (previously known as Kafka Manager) is a tool for managing Apache Kafka clusters. See below for details about the name change.

CMAK supports the following:

  • Manage multiple clusters
  • Easy inspection of cluster state (topics, consumers, offsets, brokers, replica distribution, partition distribution)
  • Run preferred replica election
  • Generate partition assignments with option to select brokers to use
  • Run reassignment of partition (based on generated assignments)
  • Create a topic with optional topic configs (0.8.1.1 has different configs than 0.8.2+)
  • Delete topic (only supported on 0.8.2+ and remember set delete.topic.enable=true in broker config)
  • Topic list now indicates topics marked for deletion (only supported on 0.8.2+)
  • Batch generate partition assignments for multiple topics with option to select brokers to use
  • Batch run reassignment of partition for multiple topics
  • Add partitions to existing topic
  • Update config for existing topic
  • Optionally enable JMX polling for broker level and topic level metrics.
  • Optionally filter out consumers that do not have ids/ owners/ & offsets/ directories in zookeeper.

Cluster Management

cluster


Topic List

topic


Topic View

topic


Consumer List View

consumer


Consumed Topic View

consumer


Broker List

broker


Broker View

broker


Requirements

  1. Kafka 0.8.. or 0.9.. or 0.10.. or 0.11..
  2. Java 11+

Configuration

The minimum configuration is the zookeeper hosts which are to be used for CMAK (pka kafka manager) state. This can be found in the application.conf file in conf directory. The same file will be packaged in the distribution zip file; you may modify settings after unzipping the file on the desired server.

cmak.zkhosts="my.zookeeper.host.com:2181"

You can specify multiple zookeeper hosts by comma delimiting them, like so:

cmak.zkhosts="my.zookeeper.host.com:2181,other.zookeeper.host.com:2181"

Alternatively, use the environment variable ZK_HOSTS if you don't want to hardcode any values.

ZK_HOSTS="my.zookeeper.host.com:2181"

You can optionally enable/disable the following functionality by modifying the default list in application.conf :

application.features=["KMClusterManagerFeature","KMTopicManagerFeature","KMPreferredReplicaElectionFeature","KMReassignPartitionsFeature"]
  • KMClusterManagerFeature - allows adding, updating, deleting cluster from CMAK (pka Kafka Manager)
  • KMTopicManagerFeature - allows adding, updating, deleting topic from a Kafka cluster
  • KMPreferredReplicaElectionFeature - allows running of preferred replica election for a Kafka cluster
  • KMReassignPartitionsFeature - allows generating partition assignments and reassigning partitions

Consider setting these parameters for larger clusters with jmx enabled :

  • cmak.broker-view-thread-pool-size=< 3 * number_of_brokers>
  • cmak.broker-view-max-queue-size=< 3 * total # of partitions across all topics>
  • cmak.broker-view-update-seconds=< cmak.broker-view-max-queue-size / (10 * number_of_brokers) >

Here is an example for a kafka cluster with 10 brokers, 100 topics, with each topic having 10 partitions giving 1000 total partitions with JMX enabled :

  • cmak.broker-view-thread-pool-size=30
  • cmak.broker-view-max-queue-size=3000
  • cmak.broker-view-update-seconds=30

The follow control consumer offset cache's thread pool and queue :

  • cmak.offset-cache-thread-pool-size=< default is # of processors>
  • cmak.offset-cache-max-queue-size=< default is 1000>
  • cmak.kafka-admin-client-thread-pool-size=< default is # of processors>
  • cmak.kafka-admin-client-max-queue-size=< default is 1000>

You should increase the above for large # of consumers with consumer polling enabled. Though it mainly affects ZK based consumer polling.

Kafka managed consumer offset is now consumed by KafkaManagedOffsetCache from the "__consumer_offsets" topic. Note, this has not been tested with large number of offsets being tracked. There is a single thread per cluster consuming this topic so it may not be able to keep up on large # of offsets being pushed to the topic.

Authenticating a User with LDAP

Warning, you need to have SSL configured with CMAK (pka Kafka Manager) to ensure your credentials aren't passed unencrypted. Authenticating a User with LDAP is possible by passing the user credentials with the Authorization header. LDAP authentication is done on first visit, if successful, a cookie is set. On next request, the cookie value is compared with credentials from Authorization header. LDAP support is through the basic authentication filter.

  1. Configure basic authentication
  • basicAuthentication.enabled=true
  • basicAuthentication.realm=< basic authentication realm>
  1. Encryption parameters (optional, otherwise randomly generated on startup) :
  • basicAuthentication.salt="some-hex-string-representing-byte-array"
  • basicAuthentication.iv="some-hex-string-representing-byte-array"
  • basicAuthentication.secret="my-secret-string"
  1. Configure LDAP/LDAPS authentication
  • basicAuthentication.ldap.enabled=< Boolean flag to enable/disable ldap authentication >
  • basicAuthentication.ldap.server=< fqdn of LDAP server>
  • basicAuthentication.ldap.port=< port of LDAP server>
  • basicAuthentication.ldap.username=< LDAP search username>
  • basicAuthentication.ldap.password=< LDAP search password>
  • basicAuthentication.ldap.search-base-dn=< LDAP search base>
  • basicAuthentication.ldap.search-filter=< LDAP search filter>
  • basicAuthentication.ldap.connection-pool-size=< number of connection to LDAP server>
  • basicAuthentication.ldap.ssl=< Boolean flag to enable/disable LDAPS>
  1. (Optional) Limit access to a specific LDAP Group
  • basicAuthentication.ldap.group-filter=< LDAP group filter>
  • basicAuthentication.ldap.ssl-trust-all=< Boolean flag to allow non-expired invalid certificates>

Example (Online LDAP Test Server):

  • basicAuthentication.ldap.enabled=true
  • basicAuthentication.ldap.server="ldap.forumsys.com"
  • basicAuthentication.ldap.port=389
  • basicAuthentication.ldap.username="cn=read-only-admin,dc=example,dc=com"
  • basicAuthentication.ldap.password="password"
  • basicAuthentication.ldap.search-base-dn="dc=example,dc=com"
  • basicAuthentication.ldap.search-filter="(uid=$capturedLogin$)"
  • basicAuthentication.ldap.group-filter="cn=allowed-group,ou=groups,dc=example,dc=com"
  • basicAuthentication.ldap.connection-pool-size=10
  • basicAuthentication.ldap.ssl=false
  • basicAuthentication.ldap.ssl-trust-all=false

Deployment

The command below will create a zip file which can be used to deploy the application.

./sbt clean dist

Please refer to play framework documentation on production deployment/configuration.

If java is not in your path, or you need to build against a specific java version, please use the following (the example assumes zulu java11):

$ PATH=/usr/lib/jvm/zulu-11-amd64/bin:$PATH \
  JAVA_HOME=/usr/lib/jvm/zulu-11-amd64 \
  /path/to/sbt -java-home /usr/lib/jvm/zulu-11-amd64 clean dist

This ensures that the 'java' and 'javac' binaries in your path are first looked up in the correct location. Next, for all downstream tools that only listen to JAVA_HOME, it points them to the java11 location. Lastly, it tells sbt to use the java11 location as well.

Starting the service

After extracting the produced zipfile, and changing the working directory to it, you can run the service like this:

$ bin/cmak

By default, it will choose port 9000. This is overridable, as is the location of the configuration file. For example:

$ bin/cmak -Dconfig.file=/path/to/application.conf -Dhttp.port=8080

Again, if java is not in your path, or you need to run against a different version of java, add the -java-home option as follows:

$ bin/cmak -java-home /usr/lib/jvm/zulu-11-amd64

Starting the service with Security

To add JAAS configuration for SASL, add the config file location at start:

$ bin/cmak -Djava.security.auth.login.config=/path/to/my-jaas.conf

NOTE: Make sure the user running CMAK (pka kafka manager) has read permissions on the jaas config file

Packaging

If you'd like to create a Debian or RPM package instead, you can run one of:

sbt debian:packageBin

sbt rpm:packageBin

Credits

Most of the utils code has been adapted to work with Apache Curator from Apache Kafka.

Name and Management

CMAK was renamed from its previous name due to this issue. CMAK is designed to be used with Apache Kafka and is offered to support the needs of the Kafka community. This project is currently managed by employees at Verizon Media and the community who supports this project.

License

Licensed under the terms of the Apache License 2.0. See accompanying LICENSE file for terms.

Consumer/Producer Lag

Producer offset is polled. Consumer offset is read from the offset topic for Kafka based consumers. This means the reported lag may be negative since we are consuming offset from the offset topic faster then polling the producer offset. This is normal and not a problem.

Migration from Kafka Manager to CMAK

  1. Copy config files from old version to new version (application.conf, consumer.properties)
  2. Change start script to use bin/cmak instead of bin/kafka-manager
Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "{}" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright 2015 Yahoo Inc. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

简介

暂无描述 展开 收起
Apache-2.0
取消

发行版

暂无发行版

贡献者

全部

近期动态

加载更多
不能加载更多了
1
https://gitee.com/opensource_org/kafka-manager.git
git@gitee.com:opensource_org/kafka-manager.git
opensource_org
kafka-manager
kafka-manager
master

搜索帮助