OpenNMS Meridian requires one of the following operating systems. See the latest Meridian release notes for information about OS support changes.

Operating System Compatible Versions (64-bit):

  • Red Hat Enterprise Linux 7.x & 8.x
  • CentOS 7.x
  • CentOS Stream 9.x

OpenNMS Horizon requires one of the following operating systems. See the latest Horizon release notes for information about OS support changes.

Operating System Compatible Versions (64-bit):

  • Red Hat Enterprise Linux: 7.x, 8.x, 9.x
  • CentOS: 7.x
  • CentOS Stream: 9.x
  • Debian: 9 - 11
  • Ubuntu: 20.04 LTS