IBM Cloud Orchestrator, Version 2.5.0.8

Checking the software prerequisites

Ensure that your IBM Cloud Orchestrator Server environment meet the software prerequisites for your IBM® Cloud Orchestrator installation.

IBM Cloud Orchestrator is installed on one or two IBM Cloud Orchestrator Servers depending on the topology you chose. The operating system of the IBM Cloud Orchestrator Servers must be Red Hat Enterprise Linux, and the architecture must be x86_64. The supported versions of Red Hat Enterprise Linux are 7.0, 7.1, 7.2, 7.3, 7.4, and 7.5. For IBM Cloud Orchestrator Keystone topology supports only Red Hat Enterprise Linux 7.3, 7.4, and 7.5.

The IBM Cloud Orchestrator installer must access one of the following Red Hat Enterprise Linux repositories:

Registered Red Hat Network
Customer-provided yum repository
Red Hat Enterprise Linux ISO

You must configure the IBM Cloud Orchestrator Servers as follows:

The operating system must be installed with at least the standard minimal installation package.
When installing the Red Hat Enterprise Linux operating system for the IBM Cloud Orchestrator Servers, the minimal installation package is sufficient, because the IBM Cloud Orchestrator deployment script installs the required packages from the corresponding YUM repository or Red Hat ISO files.
To prevent the vulnerabilities described in CVE-2016-0777 and CVE-2016-0778, the minimum prerequisite level of OpenSSH is openssh-6.6.1p1-23.
Host name resolution must work between the IBM Cloud Orchestrator Servers and the OpenStack servers. You can configure the IBM Cloud Orchestrator Servers with the corporate DNS. If no corporate DNS is available, you must update the /etc/hosts file on each of the required servers (for example, IBM Cloud Orchestrator Servers, OpenStack Controllers, compute nodes) to include all of the IBM Cloud Orchestrator and OpenStack server hosts. Each entry in the /etc/hosts file must specify both the fully qualified domain name and the host name, in that order. To verify that you configured the /etc/hosts file correctly, run the following commands:
host <IP_address>

This command must return the FQDN of the server (for example, ico_server.subdomain.example.com).

hostname --fqdn

This command must return the same FQDN as in the previous command.

hostname

This command must return the first part of the FQDN that is the host name (for example, ico_server).
The ports that are used by IBM Cloud Orchestrator must be open. For a list of the ports that must be open, see Ports used by IBM Cloud Orchestrator.
If you are installing a high-availability topology, the IBM Cloud Orchestrator Servers must be able to communicate each other by using SSH.
[VMware only] If you install IBM Cloud Orchestrator on a VMware virtual machine, install VMware Tools to improve the performance of the virtual machine.

Note:

For supported versions of Data Protection and Recovery, Databases and Process Management tools, see the Prerequisites tab of https://www.ibm.com/software/reports/compatibility/clarity-reports/report/html/softwareReqsForProduct?deliverableId=1386584144400.
For the software prerequisites of the OpenStack environment check either the IBM Cloud Manager with OpenStack prerequisites (at http://www-01.ibm.com/support/knowledgecenter/SST55W_4.3.0/liaca/liacasoftware.html) or refer to the documentation of your vendor-specific OpenStack distribution.