# Kafka Broker not getting up

**URL:** <https://forum.confluent.io/t/kafka-broker-not-getting-up/9558>\
**Category:** Kafka Connect\
**Created:** [16 December 2023 16:31 UTC](https://forum.confluent.io/t/kafka-broker-not-getting-up/9558 "2023-12-16T16:31:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![asangula](https://avatars.discourse-cdn.com/v4/letter/a/ac8455/32.png) [@asangula](https://forum.confluent.io/u/asangula)\
**Post date:** [16 December 2023 16:31 UTC](https://forum.confluent.io/t/kafka-broker-not-getting-up/9558/1 "2023-12-16T16:31:09Z")

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Hi,

I have installed Kafka Latest version in ubuntu linux machine using AWS EC2.  
I have started zookeeper and running fine.  
while starting Kafka broker, facing below issue. Can you please help to check and what needs to be correct.

# Zookeeper

kafka 5450 1.3 8.2 2662220 80140 pts/1 Sl 16:06 0:01 /usr/lib/jvm/jdk-17.0.9/bin/java -Xmx512M -Xms512M -server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+ExplicitGCInvokesConcurrent -XX:MaxInlineLevel=15 -Djava.awt.headless=true -Xlog:gc\*:file=/kafka/confluent-7.5.2/bin/../logs/zookeeper-gc.log:time,tags:filecount=10,filesize=100M -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dkafka.logs.dir=/kafka/confluent-7.5.2/bin/../logs -Dlog4j.configuration=file:/kafka/confluent-7.5.2/bin/../etc/kafka/log4j.properties -cp /kafka/confluent-7.5.2/bin/../share/java/kafka/_:/kafka/confluent-7.5.2/bin/../share/java/confluent-telemetry/_ org.apache.zookeeper.server.quorum.QuorumPeerMain ../etc/kafka/zookeeper.properties

# Kafka Broker

Java HotSpot™ 64-Bit Server VM warning: INFO: os::commit\_memory(0x00000000c0000000, 1073741824, 0) failed; error=‘Not enough space’ (errno=12)

# 

# There is insufficient memory for the Java Runtime Environment to continue.

# Native memory allocation (mmap) failed to map 1073741824 bytes for committing reserved memory.

# An error report file with more information is saved as:

# /kafka/confluent-7.5.2/bin/hs\_err\_pid5507.log

want to know one more thing is, where we need to install Java, is it in root or local user  
I am using single broker, not multi broker.

Thanks in Advance.

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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:** [18 December 2023 07:43 UTC](https://forum.confluent.io/t/kafka-broker-not-getting-up/9558/2 "2023-12-18T07:43:49Z")

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hey @asangula

which EC2 instance did you use?  
could you check the following linux settings:  
`vm.max_map_count`

Best,  
Michael

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<div class="post-metadata">

**Author:** ![asangula](https://avatars.discourse-cdn.com/v4/letter/a/ac8455/32.png) [@asangula](https://forum.confluent.io/u/asangula)\
**Post date:** [18 December 2023 18:37 UTC](https://forum.confluent.io/t/kafka-broker-not-getting-up/9558/3 "2023-12-18T18:37:04Z")

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Hi Michel,

I have reduced, java and its working fine.  
java -Xmx512M -Xms512M in kafka broker, by defaullt this value showing 1G memory.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex019/uploads/confluentcommunity/original/1X/c49438c90c9df282e9996fdf6971be890c71b65a.svg) [@system](https://forum.confluent.io/u/system)\
**Post date:** [17 January 2024 18:37 UTC](https://forum.confluent.io/t/kafka-broker-not-getting-up/9558/4 "2024-01-17T18:37:12Z")

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