Minimum system requirements

Just testing* Minimum server specification**

CPU

2 GHz dual core x86_64

3 GHz quad core x86_64 and above

RAM

4 GB (physical)

16 GB (physical) and above

Storage (disk space)

50 GB HDD, SSD

1 TB with SSD and above

*You can install the packages and the services start.
**Your intended workload (network size, number of monitored metrics, flows, events, and data retention requirements) affects these requirements.

Operating systems

OpenNMS Horizon requires one of the following operating systems. See the release notes for information about platform support changes, including deprecated platforms.

Operating System Compatible Versions (64-bit)

RHEL

7.x
8.x

CentOS

7.x
CentOS Stream 9.x

Debian

9 - 11

Ubuntu

20.04 LTS

Compatibility

Horizon 29 is compatible with the following components:

Component Version Compatibility

OpenNMS Helm

7+

OpenNMS Integration API

0.6.x

Cassandra

3.11.x

Elasticsearch

6.7.0 - 7.6.2

Java Development Kit

OpenJDK 11

Kafka

1.x - 2.x

PostgreSQL

10.x - 14.x

RRDTool

1.7.x

Browser

Latest Mozilla Firefox or Google Chrome