6.3

Another approach to sizing is through self monitoring. Deploy the cluster based on your best estimate, but
create an alert for when capacity falls below a threshold, one that allows enough time to add nodes or disk
to the cluster. You also have the option to create an email notication when thresholds are passed.
Add Data Disk Space to a vRealize Operations Manager Linux or Windows Node
You add to the data disk of vRealize Operations Manager Linux or Windows nodes when space for storing
the collected data runs low.
The following example is for a Linux system. The Windows process is similar, but with Windows
characteristics such as backward slashes instead of forward slashes.
Prerequisites
Note the disk size of the analytics cluster nodes. When adding disk, you must maintain uniform size across
analytics cluster nodes.
Procedure
1 Add a new disk to the system, and partition and format the disk as needed.
2 Use the vRealize Operations Manager administration interface to take the cluster oine.
3 Stop the vmware-casa service.
4 Move the contents of /storage/db into a directory on the new disk.
5 Create a symbolic link from the new directory back to /storage/db, so that /storage/db now references
the new disk.
6 Start the vmware-casa service.
7 Bring the cluster online.
Custom vRealize Operations Manager Certificates
By default, vRealize Operations Manager includes its own authentication certicates. The default certicates
cause the browser to display a warning when you connect to the vRealize Operations Manager user
interface.
Your site security policies might require that you use another certicate, or you might want to avoid the
warnings caused by the default certicates. In either case, vRealize Operations Manager supports the use of
your own custom certicate. You can upload your custom certicate during initial master node
conguration or later.
Custom vRealize Operations Manager Certificate Requirements
A certicate used with vRealize Operations Manager must conform to certain requirements. Using a custom
certicate is optional and does not aect vRealize Operations Manager features.
Requirements for Custom Certificates
Custom vRealize Operations Manager certicates must meet the following requirements.
n
The certicate le must include the terminal (leaf) server certicate, a private key, and all issuing
certicates if the certicate is signed by a chain of other certicates.
n
In the le, the leaf certicate must be rst in the order of certicates. After the leaf certicate, the order
does not maer.
n
In the le, all certicates and the private key must be in PEM format. vRealize Operations Manager
does not support certicates in PFX, PKCS12, PKCS7, or other formats.
vRealize Operations Manager Installation and Configuration Guide for Linux and Windows
16 VMware, Inc.