Meet Minimum System Requirements

Your system must meet the following system requirements:

Software Requirements

On each of your hosts:

yum and rpm (RHEL/CentOS/Rocky Linux)
apt (Ubuntu)
scp, curl, unzip, tar, wget, and gcc
OpenSSL (v1.01, build 16 or later)
Java8 with devel package
Python 3.11 (with python-devel)

Info

Python 3.11.x should be the default Python version when installing Ambari and the ODP cluster.

update-alternatives --config python update-alternatives --config python3

Install the following required packages for ODP:

pip3.11 install distro pip3.11 install lxml

Memory Requirements

The Ambari host should have at least 1 GB RAM, with 500 MB free.

To check the available memory on any host, run the free -m command.

Note Use these values as guidelines. Be sure to test them for your specific environment.

Package Size and Inode Count Requirements

	Size	Inodes
Ambari Server	100MB	5,000
Ambari Agent	8MB	1,000
After Ambari Server Setup	N/A	4,000
After Ambari Server Start	N/A	500
After Ambari Agent Start	N/A	200

Note Size and Inode values are approximate.

Maximum Open Files Requirements

The recommended maximum number of open file descriptors is 10,000 or more. To check the current value set the maximum number of open file descriptors, execute the following shell commands on each host:

ulimit -Sn

ulimit -Hn

If the output is not greater than 10,000, then run the following command to set it to a suitable default:

ulimit -n 10000

Last updated on Nov 20, 2025

Was this page helpful?