Using the Platform Management Console’s icon host view, you can see the state of all your hosts.
Host icon
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What it means
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A green base with green bars means that your host is OK and that it is running workload units. The more CPU capacity a host is using, the higher the green bars. A green outline means that the host has been activated at the lowest priority (for host scavenging).
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A grey icon means that this host is closed. It may be closed for several reasons.
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A red icon means that the host is unavailable.
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The master host icon and name are displayed at the bottom of the Console page.
How do I see details?
For any host, hold your mouse over the icon for details about the current state of the host. For even more detail, click on the host icon. The Host Properties page opens with all the details for that host.