Screenshots for the inspecting the cluster guide
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@ -9,7 +9,7 @@ description: |-
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# Inspecting the Cluster
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# Inspecting the Cluster
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The Web UI can be a powerful tool for keeping tabs on the state of the Nomad cluster from an
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The Web UI can be a powerful tool for keeping tabs on the state of the Nomad cluster from an
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operator's perspective. The Web UI will show all client nodes, show driver health for client nodes,
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operator's perspective. This includes showing all client nodes, showing driver health for client nodes,
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driver status, resource utilization, allocations by client node, and more.
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driver status, resource utilization, allocations by client node, and more.
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## Reviewing All Clients
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## Reviewing All Clients
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@ -22,7 +22,7 @@ allocations are running in it.
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This view will also live-update as the state of client nodes change.
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This view will also live-update as the state of client nodes change.
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~> Screenshot (Clients list)
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[![Clients List][img-clients-list]][img-clients-list]
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## Filtering Clients
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## Filtering Clients
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@ -33,10 +33,10 @@ down to only those matching certain facets. The Web UI has three facets you can
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of each client node in the cluster.
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of each client node in the cluster.
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2. **State:** The state of the cluster, including Initializing, Ready, Down, Ineligible, and
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2. **State:** The state of the cluster, including Initializing, Ready, Down, Ineligible, and
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Draining.
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Draining.
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3. **Datacenter:** The datacenter the client node is in, including a dynamicaly generated list based
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3. **Datacenter:** The datacenter the client node is in, including a dynamically generated list based
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on all the datacenters in the cluster.
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on all the datacenters in the cluster.
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~> Screenshot (Zoom in on client filters, with one open)
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[![Clients filters][img-clients-filters]][img-clients-filters]
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## Inspecting an Individual Client
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## Inspecting an Individual Client
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@ -44,7 +44,7 @@ From the Clients List page, clicking a client node in the table will direct you
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page for the client node. This page includes all information about the client node is live-updated
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page for the client node. This page includes all information about the client node is live-updated
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to always present up-to-date information.
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to always present up-to-date information.
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~> Screenshot (Client Detail)
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[![Client Detail][img-client-detail]][img-client-detail]
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### Resource Utilization
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### Resource Utilization
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@ -53,7 +53,7 @@ uses these metrics to create time-series graphics for the current session.
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When viewing a client node, resource utilization will automatically start logging.
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When viewing a client node, resource utilization will automatically start logging.
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~> Screenshot (resource utilization)
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[![Client Resource Utilization][img-client-resource-utilization]][img-client-resource-utilization]
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### Allocations
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### Allocations
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@ -64,14 +64,14 @@ garbage-collected.
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This is presented in a searchable table which can additionally be filtered to only preempted
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This is presented in a searchable table which can additionally be filtered to only preempted
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allocations.
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allocations.
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~> Screenshot (client node alloc table)
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[![Client Allocations][img-client-allocations]][img-client-allocations]
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### Client Events
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### Client Events
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Client nodes will also emit events on meaningful state changes, such as when the node becomes ready
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Client nodes will also emit events on meaningful state changes, such as when the node becomes ready
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for scheduling or when a driver becomes unhealthy.
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for scheduling or when a driver becomes unhealthy.
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~> Screenshot (client node events)
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[![Client Events][img-client-events]][img-client-events]
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### Driver Status
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### Driver Status
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@ -79,7 +79,7 @@ Task drivers are additional services running on a client node. Nomad will finger
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communicate with the task driver to determine if the driver is available and healthy. This
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communicate with the task driver to determine if the driver is available and healthy. This
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information is reported through the Web UI on the Client Detail page.
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information is reported through the Web UI on the Client Detail page.
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~> Screenshot (driver status)
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[![Client Driver Status][img-client-driver-status]][img-client-driver-status]
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### Attributes
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### Attributes
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@ -91,7 +91,7 @@ In addition to the hardware attributes, Nomad operators can annotate
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[a client node with metadata](/docs/configuration/client.html#meta) as part of the client configuration. This metadata
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[a client node with metadata](/docs/configuration/client.html#meta) as part of the client configuration. This metadata
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is also presented on the Client Detail page.
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is also presented on the Client Detail page.
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~> Screenshot (client attributes)
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[![Client Attributes][img-client-attributes]][img-client-attributes]
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## When a Node is Draining
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## When a Node is Draining
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@ -106,7 +106,7 @@ scheduling.
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Since drains can be configured in a variety of ways, the Client Detail page will also present the
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Since drains can be configured in a variety of ways, the Client Detail page will also present the
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details of how the drain is performed.
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details of how the drain is performed.
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~> Screenshot (client detail drain)
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[![Client Drain][img-client-drain]][img-client-drain]
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## Reviewing All Servers
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## Reviewing All Servers
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@ -116,13 +116,13 @@ availability. From any page, the Servers List page can be accessed from the left
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Here you can see every server node. This will be a small list—typically three, but maybe five or
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Here you can see every server node. This will be a small list—typically three, but maybe five or
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seven.
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seven.
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~> Screenshot (servers list)
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[![Servers List][img-servers-list]][img-servers-list]
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## Inspecting an Individual Server
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## Inspecting an Individual Server
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Clicking a server node on the Servers List will expand the tags table for the server node.
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Clicking a server node on the Servers List will expand the tags table for the server node.
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~> Screenshot (server node)
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[![Server Detail][img-server-detail]][img-server-detail]
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## Access Control
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## Access Control
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@ -136,3 +136,15 @@ By default, all features—read and write—are available to all users of the We
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[Securing the Web UI with ACLs](/guides/web-ui/securing.html) guide to learn how to prevent
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[Securing the Web UI with ACLs](/guides/web-ui/securing.html) guide to learn how to prevent
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anonymous users from having write permissions as well as how to continue to use Web UI write
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anonymous users from having write permissions as well as how to continue to use Web UI write
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features as a privileged user.
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features as a privileged user.
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[img-client-allocations]: /assets/images/guide-ui-img-client-allocations.png
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[img-client-attributes]: /assets/images/guide-ui-img-client-attributes.png
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[img-client-detail]: /assets/images/guide-ui-img-client-detail.png
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[img-client-drain]: /assets/images/guide-ui-img-client-drain.png
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[img-client-driver-status]: /assets/images/guide-ui-img-client-driver-status.png
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[img-client-events]: /assets/images/guide-ui-img-client-events.png
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[img-client-resource-utilization]: /assets/images/guide-ui-img-client-resource-utilization.png
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[img-clients-filters]: /assets/images/guide-ui-img-clients-filters.png
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[img-clients-list]: /assets/images/guide-ui-img-clients-list.png
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[img-server-detail]: /assets/images/guide-ui-img-server-detail.png
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[img-servers-list]: /assets/images/guide-ui-img-servers-list.png
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@ -77,7 +77,7 @@ rescheduled successor. Since Nomad handles all of this automatically, the Web UI
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explain the state of allocations through iconography and linking previous and next allocations in a
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explain the state of allocations through iconography and linking previous and next allocations in a
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reschedule chain.
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reschedule chain.
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[![Allocation Reschedule Icon][img-alloc-reschedule-iconj]][img-alloc-reschedule-icon]
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[![Allocation Reschedule Icon][img-alloc-reschedule-icon]][img-alloc-reschedule-icon]
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[![Allocation Reschedule Details][img-alloc-reschedule-details]][img-alloc-reschedule-details]
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[![Allocation Reschedule Details][img-alloc-reschedule-details]][img-alloc-reschedule-details]
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