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.
During internal testing, a single-node vApp deployment of vRealize Operations Manager that monitored
8,000 virtual machines ran out of disk storage within one week.
Add Data Disk Space to a vRealize Operations Manager vApp Node
You add to the data disk of vRealize Operations Manager vApp nodes when space for storing the collected
data runs low.
Prerequisites
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Note the disk size of the analytics cluster nodes. When adding disk, you must maintain uniform size
across analytics cluster nodes.
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Use the vRealize Operations Manager administration interface to take the node oine.
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Verify that you are connected to a vCenter Server system with a vSphere client, and log in to the
vSphere client.
Procedure
1 Shut down the virtual machine for the node.
2 Edit the hardware seings of the virtual machine, and do one of the following:
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Increase the size of Hard Disk 2.
You cannot increase the size when the virtual machine has snapshots.
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Add another disk.
3 Power on the virtual machine for the node.
During the power-on process, the virtual machine expands the vRealize Operations Manager data partition.
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.
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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.
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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.
vRealize Operations Manager vApp Deployment and Configuration Guide
16 VMware, Inc.