49 lines
1.9 KiB
Plaintext
49 lines
1.9 KiB
Plaintext
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[[cat-nodes]]
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== Nodes
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The `nodes` command shows the cluster topology.
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[source,shell]
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--------------------------------------------------
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% curl 192.168.56.10:9200/_cat/nodes
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SP4H 4727 192.168.56.30 9300 1.0.0.Beta2 1.6.0_27 72.1gb 35.4 93.9mb 79 239.1mb 0.45 3.4h d m Boneyard
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_uhJ 5134 192.168.56.10 9300 1.0.0.Beta2 1.6.0_27 72.1gb 33.3 93.9mb 85 239.1mb 0.06 3.4h d * Athena
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HfDp 4562 192.168.56.20 9300 1.0.0.Beta2 1.6.0_27 72.2gb 74.5 93.9mb 83 239.1mb 0.12 3.4h d m Zarek
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--------------------------------------------------
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The first few columns tell you where your nodes live. For sanity it
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also tells you what version of ES and the JVM each one runs.
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[source,shell]
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--------------------------------------------------
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nodeId pid ip port es jdk
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u2PZ 4234 192.168.56.30 9300 1.0.0.Beta1 1.6.0_27
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URzf 5443 192.168.56.10 9300 1.0.0.Beta1 1.6.0_27
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ActN 3806 192.168.56.20 9300 1.0.0.Beta1 1.6.0_27
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--------------------------------------------------
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The next few give a picture of your heap, memory, and load.
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[source,shell]
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--------------------------------------------------
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diskAvail heapPercent heapMax ramPercent ramMax load
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72.1gb 31.3 93.9mb 81 239.1mb 0.24
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72.1gb 19.6 93.9mb 82 239.1mb 0.05
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72.2gb 64.9 93.9mb 84 239.1mb 0.12
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--------------------------------------------------
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The last columns provide ancillary information that can often be
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useful when looking at the cluster as a whole, particularly large
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ones. How many master-eligible nodes do I have? How many client
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nodes? It looks like someone restarted a node recently; which one was
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it?
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[source,shell]
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--------------------------------------------------
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uptime data/client master name
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3.5h d m Boneyard
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3.5h d * Athena
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3.5h d m Zarek
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--------------------------------------------------
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