68 lines
3 KiB
Plaintext
68 lines
3 KiB
Plaintext
[[dashboards]]
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== Monitoring's Dashboards
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=== Overview Dashboard
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The _Overview_ dashboard is Monitoring's main page. The dashboard displays the
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essentials metrics you need to know that your cluster is healthy. It also
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provides an overview of your nodes and indices, displayed in two clean tables
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with the relevant key metrics. If some value needs your attention, they will
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be highlighted in yellow or red. The nodes and indices tables also serve as an
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entry point to the more detailed _Node Statistics_ and _Index Statistics_
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dashboards.
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overview_thumb.png["Overview Dashboard",link="images/overview.png"]
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=== Node & Index Statistics
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The _Node Statistics_ dashboard displays metric charts from the perspective of
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one or more nodes. Metrics include hardware level metrics (like load and CPU
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usage), process and JVM metrics (memory usage, GC), and node level
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Elasticsearch metrics such as field data usage, search requests rate and
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thread pool rejection.
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node_stats_thumb.png["Node Statistics Dashboard",link="images/node_stats.png"]
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The _Index Statistics_ dashboard is very similar to the _Node Statistics_
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dashboard, but it shows you all the metrics from the perspective of one or
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more indices. The metrics are per index, with data aggregated from all of the
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nodes in the cluster. For example, the ''store size'' chart shows the total
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size of the index data across the whole cluster.
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index_stats_thumb.png["Index Statistics Dashboard",link="images/index_stats.png"]
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=== Shard Allocation
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The _Shard Allocation_ dashboard displays how the shards are allocated across nodes.
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The dashboard also shows the status of the shards. It has two perspectives, _By Indices_ and _By Nodes_.
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The _By Indices_ view lists each index and shows you how it's shards are
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distributed across nodes. The _By Nodes_ view lists each node and shows you which shards the node current host.
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The viewer also has a playback feature which allows you to view the history of the shard allocation. You can rewind to each
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allocation event and then play back the history from any point in time. Hover on relocating shards to highlight both
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their previous and new location. The time line color changes based on the state of the cluster for
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each time period.
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shard_allocation_thumb.png["Shard Allocation Dashboard",link="images/shard_allocation.png"]
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=== Cluster Pulse
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The Cluster Pulse Dashboard allows you to see any event of interest in the cluster. Typical
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events include nodes joining or leaving, master election, index creation, shard (re)allocation
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and more.
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cluster_pulse_thumb.png["Index Statistics Dashboard",link="images/cluster_pulse.png"]
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[[sense]]
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=== Sense
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_Sense_ is a lightweight developer console. The console is handy when you want
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to make an extra API call to check something or perhaps tweak a setting. The
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developer console understands both JSON and the Elasticsearch API, offering
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suggestions and autocompletion. It is very useful for prototyping queries,
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researching your data or any other administrative work with the API.
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image::images/sense_thumb.png["Developer Console",link="sense.png"]
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