6.3

Table Of Contents
Create a Node by Running the vRealize Operations Manager Linux
Installer
vRealize Operations Manager consists of one or more nodes, in a cluster. To create nodes, you download
and run the vRealize Operations Manager Enterprise installer for Linux.
Prerequisites
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Plan to use the system only as a vRealize Operations Manager node. Do not host other applications on
the same machine.
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Verify that vRealize Operations Manager ports are open at the rewall. See “How vRealize Operations
Manager Uses Network Ports,” on page 19.
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Verify that prerequisite packages are installed. See “Required Linux Packages for vRealize Operations
Manager,” on page 21.
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If this node is to be the master node, reserve a static IP address for the virtual machine, and know the
associated domain name server, default gateway, and network mask values.
Plan to keep the IP address because it is dicult to change the address after installation.
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If this node is to be a data node that will become the HA replica node, reserve a static IP address for the
virtual machine, and know the associated domain name server, default gateway, and network mask
values.
Plan to keep the IP address because it is dicult to change the address after installation.
In addition, familiarize yourself with HA node placement as described in About vRealize Operations
Manager High Availability,” on page 33.
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Preplan your domain and machine naming so that the Linux machine name will begin and end with
alphabet (a–z) or digit (0–9) characters, and will only contain alphabet, digit, or hyphen (-) characters.
The underscore character (_) must not appear in the host name or anywhere in the fully qualied
domain name (FQDN).
Plan to keep the name because it is dicult to change the name after installation.
For more information, review the host name specications from the Internet Engineering Task Force.
See www.ietf.org.
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Preplan node placement and networking to meet the requirements described in “General vRealize
Operations Manager Cluster Node Requirements,” on page 12 and “vRealize Operations Manager
Cluster Node Networking Requirements,” on page 13.
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If you expect the vRealize Operations Manager cluster to use IPv6 addresses, review the IPv6
limitations described in “Using IPv6 with vRealize Operations Manager,” on page 14.
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Be aware that vRealize Operations Manager uninstalls httpd if it is installed, because
vRealize Operations Manager installs its version of Apache.
If vRealize Operations Manager uninstalls httpd, it backs up the /etc/httpd conguration directory.
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Uninstall any existing copies of PostgreSQL, and remove PostgreSQL directories and data.
vRealize Operations Manager must install its own copy of PostgreSQL.
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Verify that all machines in the le ntp.conf are resolvable. If you are unsure about the contents of
ntp.conf, make a backup copy of the le, and overwrite the original with the default version from a
new machine installation.
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Locate your copy of the vRealize Operations Manager Enterprise bin installer for Linux.
Chapter 1 Preparing for vRealize Operations Manager Installation
VMware, Inc. 23