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docs-v2/content/enterprise_influxdb/v1/administration/manage/node-labels.md

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Manage node labels Assign user-defined labels to nodes in your InfluxDB Enterprise cluster.
enterprise_influxdb_v1
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Manage node labels Manage
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/enterprise_influxdb/v1/tools/influxd-ctl/show/
/enterprise_influxdb/v1/tools/influxd-ctl/node-labels/

Assign user-defined labels to nodes in your InfluxDB Enterprise cluster. Node labels are user-defined key-value pairs assigned to nodes in your cluster that act as metadata for each node.

The tools used for viewing and managing node labels in your InfluxDB Enterprise cluster are the influxd-ctl show command and the influxd-ctl node-label command and subcommands.

View node labels

Use the influxd-ctl show command to view information about nodes in your InfluxDB Enterprise cluster, including node labels.

influxd-ctl show

{{< expand-wrapper >}} {{% expand "View example influxd-ctl show output" %}}

Data Nodes
==========
ID      TCP Address        Version         Labels
4       data-node-01:8188  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-west"}
5       data-node-02:8288  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-east"}

Meta Nodes
==========
ID      TCP Address        Version         Labels
1       meta-node-01:8191  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-west"}
2       meta-node-02:8291  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-east"}
3       meta-node-03:8391  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-west"}

{{% /expand %}} {{< /expand-wrapper >}}

Add labels to a node

To add a label to a node in your InfluxDB Enterprise cluster, use the influxd-ctl node-labels set command and include the following flags:

  • -nodeid: Node ID to add the labels to
  • -labels: JSON object of label key-value pairs
influxd-ctl node-labels set -nodeid 4 -labels '{"az":"us-east","team":"amer"}'

{{< expand-wrapper >}} {{% expand "View influxd-ctl show output with added labels" %}}

Data Nodes
==========
ID      TCP Address        Version         Labels
4       data-node-01:8188  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-east","team":"amer"}
5       data-node-02:8288  {{< latest-patch >}}-c{{< latest-patch >}}  {}

Meta Nodes
==========
ID      TCP Address        Version         Labels
1       meta-node-01:8191  {{< latest-patch >}}-c{{< latest-patch >}}  {}
2       meta-node-02:8291  {{< latest-patch >}}-c{{< latest-patch >}}  {}
3       meta-node-03:8391  {{< latest-patch >}}-c{{< latest-patch >}}  {}

{{% /expand %}} {{< /expand-wrapper >}}

Update node labels

To update node labels, use the influxd-ctl node-labels set command and include the following flags:

  • -nodeid: Node ID to update the labels on
  • -labels: JSON object of label key-value pairs to update
influxd-ctl node-labels set -nodeid 4 -labels '{"team":"emea"}'

Only label keys included in the -labels JSON object are updated. All other node labels are not modified.

{{< expand-wrapper >}} {{% expand "View influxd-ctl show output with updated labels" %}}

Data Nodes
==========
ID      TCP Address        Version         Labels
4       data-node-01:8188  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-east","team":"emea"}
5       data-node-02:8288  {{< latest-patch >}}-c{{< latest-patch >}}  {}

Meta Nodes
==========
ID      TCP Address        Version         Labels
1       meta-node-01:8191  {{< latest-patch >}}-c{{< latest-patch >}}  {}
2       meta-node-02:8291  {{< latest-patch >}}-c{{< latest-patch >}}  {}
3       meta-node-03:8391  {{< latest-patch >}}-c{{< latest-patch >}}  {}

{{% /expand %}} {{< /expand-wrapper >}}

Delete node labels

To update node labels, use the influxd-ctl node-labels set command and include the following flags:

  • -nodeid: Node ID to update the labels on
  • -labels: JSON object of label key-value pairs to update
influxd-ctl node-labels delete -nodeid 4 -labels '["team"]'

{{< expand-wrapper >}} {{% expand "View influxd-ctl show output with deleted label" %}}

Data Nodes
==========
ID      TCP Address        Version         Labels
4       data-node-01:8188  {{< latest-patch >}}-c{{< latest-patch >}}  {"az":"us-east"}
5       data-node-02:8288  {{< latest-patch >}}-c{{< latest-patch >}}  {}

Meta Nodes
==========
ID      TCP Address        Version         Labels
1       meta-node-01:8191  {{< latest-patch >}}-c{{< latest-patch >}}  {}
2       meta-node-02:8291  {{< latest-patch >}}-c{{< latest-patch >}}  {}
3       meta-node-03:8391  {{< latest-patch >}}-c{{< latest-patch >}}  {}

{{% /expand %}} {{< /expand-wrapper >}}

Programmatically access node labels

Use the /show-cluster endpoint of meta node API to return a JSON object containing information about your InfluxDB Enterprise cluster, including node labels.

{{< api-endpoint method="get" endpoint="meta-node-host:8191/show-cluster" >}}

{{< expand-wrapper >}} {{% expand "View example JSON output" %}}

{
    "data": [
        {
            "id": 4,
            "addr": "data-node-01:8086",
            "httpScheme": "http",
            "tcpAddr": "data-node-01:8088",
            "version": "v1.10.0",
            "labels": {
              "az": "us-east",
              "team": "emea"
          }
        },
        {
            "id": 5,
            "addr": "data-node-02:8086",
            "httpScheme": "http",
            "tcpAddr": "data-node-02:8088",
            "version": "v1.10.0",
            "labels": {
              "az": "us-west",
              "team": "apac"
          }
        }
    ],
    "meta": [
        {
            "id": 1,
            "addr": "meta-node-01:8091",
            "httpScheme": "http",
            "tcpAddr": "meta-node-01:8089",
            "version": "v1.10.0",
            "labels": {
                "az": "us-east",
                "team": "emea"
            }
        },
        {
            "id": 2,
            "addr": "meta-node-02:8091",
            "httpScheme": "http",
            "tcpAddr": "meta-node-02:8089",
            "version": "v1.10.0",
            "labels": {
              "az": "us-west",
              "team": "apac"
          }
        },
        {
            "id": 3,
            "addr": "meta-node-03:8091",
            "httpScheme": "http",
            "tcpAddr": "meta-node-03:8089",
            "version": "v1.10.0",
            "labels": {
              "az": "us-east",
              "team": "amer"
          }
        }
    ]
}

{{% /expand %}} {{< /expand-wrapper >}}