Caution
The OpenContrail versions support status:
OpenContrail 4.1 is fully supported.
OpenContrail 4.0 is deprecated and not supported for new deployments since MCP maintenance update 2019.2.4.
OpenContrail 3.2 is not supported for new deployments.
The difference between components in the specified OpenContrail versions is as follows:
In OpenContrail 3.2, services run as supervisor or non-supervisor
services. In OpenContrail 4.x, all services run as systemd
services in a Docker container.
In OpenContrail 4.x, the ifmap-server and contrail-discovery
services are absent as compared to OpenContrail 3.2.
The OpenContrail services are distributed across several MCP cluster nodes:
For both versions of OpenContrail,
the control, config, analytics, and database services
run on the OpenContrail controller (ntw) and analytics (nal) nodes.
The vrouter OpenContrail services run on the OpenStack compute nodes
(cmp).
The OpenContrail plugin is included to the neutron-server service that
runs on the OpenStack controller nodes (ctl).
This section describes the OpenContrail 3.2 and 4.x services as well as their distribution across the MCP cluster nodes.