Operating system requirements

SUSE Linux Enterprise Server (SLES)🔗

Unlike CentOS, SLES limits virtual memory by default. Changing this default requires adding the following entries to the /etc/security/limits.conf file:

* hard as unlimited
* soft as unlimited

Kernel Limits 🔗

There are three settings you must configure properly for the kernel.

File Descriptors

You can set file descriptors in Cloudera Manager by going to Kafka > Configuration > Maximum Process File Descriptors and setting the required value. Cloudera recommends a configuration of 100000 or higher.

Max Memory Map

You must configure the maximum number of memory maps in your specific kernel settings. Cloudera recommends a configuration of 32000 or higher.

Max Socket Buffer Size

Set the buffer size larger than any Kafka send buffers that you define.