# Adding new broker to cluster

**URL:** <https://forum.confluent.io/t/adding-new-broker-to-cluster/5525>\
**Category:** Ops\
**Created:** [13 July 2022 07:55 UTC](https://forum.confluent.io/t/adding-new-broker-to-cluster/5525 "2022-07-13T07:55:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![naveen8384](https://avatars.discourse-cdn.com/v4/letter/n/da6949/32.png) [@naveen8384](https://forum.confluent.io/u/naveen8384)\
**Post date:** [13 July 2022 07:55 UTC](https://forum.confluent.io/t/adding-new-broker-to-cluster/5525/1 "2022-07-13T07:55:50Z")

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Hello,  
We have 3 node broker and 3 node zookeeper cluster running on kubernetes. We use helm charts for deployment.  
Currently we have 4700 partitions on each broker and now we are planning to add another broker to get more partitions. We have enough storage on brokers and don’t see any performance issues apart from high CPU usage sometimes.

My question is there any parameter we can decide when to another broker or any limitation on number of partitions per broker?

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**Author:** ![mmuehlbeyer](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.confluent.io/mmuehlbeyer/32/1088_2.png) [@mmuehlbeyer](https://forum.confluent.io/u/mmuehlbeyer)\
**Post date:** [14 July 2022 07:56 UTC](https://forum.confluent.io/t/adding-new-broker-to-cluster/5525/2 "2022-07-14T07:56:34Z")

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hey @naveen8384

there is a generic recommendation to have not more than 4000 partitions per broker and not more than 200k partitions per cluster.

More partitions might lead to longer downtimes or performance issues (as you may already noticed)

Here are some blog post and links around that topic:

> **[How many partitions do I need in Apache Kafka?](https://www.xeotek.com/how-many-partitions-do-i-need-in-apache-kafka/)**
>
> Apache Kafka is our rocket, and the individual partitions provide order and structure to all work processes at every stage of the flight. But how many

> **[Best practices - Amazon Managed Streaming for Apache Kafka](https://docs.aws.amazon.com/msk/latest/developerguide/bestpractices.html)**
>
> Best practices for managing your Amazon MSK cluster.

[https://cwiki.apache.org/confluence/display/KAFKA/KIP-578%3A+Add+configuration+to+limit+number+of+partitions](https://cwiki.apache.org/confluence/display/KAFKA/KIP-578%3A+Add+configuration+to+limit+number+of+partitions)

> **[Apache Kafka Supports 200K Partitions Per Cluster | Confluent](https://www.confluent.io/blog/apache-kafka-supports-200k-partitions-per-cluster/)**
>
> Since the Apache Kafka® 1.1.0 release, there has been a significant increase in the number of partitions that a single Kafka cluster can support from the deployment and the availability perspective.

> **[How to Choose the Number of Topics/Partitions in a Kafka Cluster? | Confluent](https://www.confluent.io/blog/how-choose-number-topics-partitions-kafka-cluster/)**
>
> Confluent is building the foundational platform for data in motion so any organization can innovate and win in a digital-first world.

hth,  
michael