kafka堆内存调优:

1.查看堆内存大小

jmap -heap `jps | awk '/Kafka/{print $1}'` | grep MaxHeapSize

2.修改堆内存(修改堆内存大小5~6G)

which kafka-server-start.sh

vim /baimei/softwares/kafka_2.12-3.3.2/bin/kafka-server-start.sh

...

export KAFKA_HEAP_OPTS="-Xmx1G -Xms1G" # 注视掉该行(29行)，并将下面2行复制即可。

这里在生产环境 要配置Xmx5G -XMS 5G

export KAFKA_HEAP_OPTS="-server -Xmx256M -Xms256M -XX:PermSize=128m -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:ParallelGCThreads=8 -XX:ConcGCThreads=5 -XX:InitiatingHeapOccupancyPercent=70"
export JMX_PORT="8888"

3.重启kafka

[root@elk111 ~]# kafka-server-stop.sh
[root@elk111 ~]# kafka-server-start.sh -daemon $KAFKA_HOME/config/server.properties

4.查看kafka的堆内存大小

jmap -heap `jps | awk '/Kafka/{print $1}'` | grep MaxHeapSize

5.将启动脚本同步到其他节点

which kafka-server-start.sh

data_rsync.sh /baimei/softwares/kafka_2.12-3.3.2/bin/kafka-server-start.sh

6.其他节点重启kafka环境

kafka集群安装 : 连接

manager_kafka.sh stop

manager_kafka.sh start

检查 堆内存是否修改成功

jmap -heap `jps | awk '/Kafka/{print $1}'` | grep MaxHeapSize