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Consul Catalog List Nodes

Command: consul catalog nodes

Corresponding HTTP API Endpoint: [GET] /v1/catalog/nodes

The catalog nodes command prints all known nodes and metadata about them. It can also query for nodes that match a particular metadata or provide a particular service.

The table below shows this command's required ACLs. Configuration of blocking queries and agent caching are not supported from commands, but may be from the corresponding HTTP endpoint.

ACL Required
node:read

Examples

List all nodes:

$ consul catalog nodes
Node       ID        Address    DC
worker-01  1b662d97  10.4.5.31  dc1

Print detailed node information such as tagged addresses and node metadata:

$ consul catalog nodes -detailed
Node       ID                                    Address    DC   TaggedAddresses               Meta
worker-01  1b662d97-8b5c-3cc2-0ac0-96f55ad423b5  10.4.5.31  dc1  lan=10.4.5.31, wan=10.4.5.31

List nodes which provide the service name "web":

$ consul catalog nodes -service=web
Node       ID                                    Address    DC   TaggedAddresses               Meta
worker-01  1b662d97-8b5c-3cc2-0ac0-96f55ad423b5  10.4.5.31  dc1  lan=10.4.5.31, wan=10.4.5.31

Sort the resulting node list by estimated round trip time to worker-05:

$ consul catalog nodes -near=web-05
Node       ID                                    Address     DC   TaggedAddresses                Meta
worker-01  1b662d97-8b5c-3cc2-0ac0-96f55ad423b5  10.4.5.31   dc1  lan=10.4.5.31, wan=10.4.5.31
worker-02  d407a592-e93c-4d8e-8a6d-aba853d1e067  10.4.4.158  dc1  lan=10.4.4.158, wan=10.4.4.158

Usage

Usage: consul catalog nodes [options]

Command Options

  • -detailed - Output detailed information about the nodes including their addresses and metadata.

  • -near=<string>- Node name to sort the node list in ascending order based on estimated round-trip time from that node. Passing "_agent" will use this agent's node for sorting.

  • -node-meta=<key=value> - Metadata to filter nodes with the given key=value pairs. This flag may be specified multiple times to filter on multiple sources of metadata.

  • -service=<id or name> - Service id or name to filter nodes. Only nodes which are providing the given service will be returned.

  • -filter=<filter> - Expression to use for filtering the results. Can be passed via stdin by using - for the value or from a file by passing @<file path>. See the /catalog/nodes API documentation for a description of what is filterable.

Enterprise Options

  • -partition=<string> - Specifies the partition to query. If not provided, the partition will be inferred from the request's ACL token, or will default to the default partition. Partitions are a Consul Enterprise feature added in v1.11.0.

API Options

  • -ca-file=<value> - Path to a CA file to use for TLS when communicating with Consul. This can also be specified via the CONSUL_CACERT environment variable.

  • -ca-path=<value> - Path to a directory of CA certificates to use for TLS when communicating with Consul. This can also be specified via the CONSUL_CAPATH environment variable.

  • -client-cert=<value> - Path to a client cert file to use for TLS when verify_incoming is enabled. This can also be specified via the CONSUL_CLIENT_CERT environment variable.

  • -client-key=<value> - Path to a client key file to use for TLS when verify_incoming is enabled. This can also be specified via the CONSUL_CLIENT_KEY environment variable.

  • -http-addr=<addr> - Address of the Consul agent with the port. This can be an IP address or DNS address, but it must include the port. This can also be specified via the CONSUL_HTTP_ADDR environment variable. In Consul 0.8 and later, the default value is http://127.0.0.1:8500, and https can optionally be used instead. The scheme can also be set to HTTPS by setting the environment variable CONSUL_HTTP_SSL=true. This may be a unix domain socket using unix:///path/to/socket if the agent is configured to listen that way.

  • -tls-server-name=<value> - The server name to use as the SNI host when connecting via TLS. This can also be specified via the CONSUL_TLS_SERVER_NAME environment variable.

  • -token=<value> - ACL token to use in the request. This can also be specified via the CONSUL_HTTP_TOKEN environment variable. If unspecified, the query will default to the token of the Consul agent at the HTTP address.

  • -token-file=<value> - File containing the ACL token to use in the request instead of one specified via the -token argument or CONSUL_HTTP_TOKEN environment variable. This can also be specified via the CONSUL_HTTP_TOKEN_FILE environment variable.

  • -datacenter=<name> - Name of the datacenter to query. If unspecified, the query will default to the datacenter of the Consul agent at the HTTP address.

  • -stale - Permit any Consul server (non-leader) to respond to this request. This allows for lower latency and higher throughput, but can result in stale data. This option has no effect on non-read operations. The default value is false.