consul

consul [options] command [arguments]

consul is HashiCorp's service discovery and configuration tool. It provides service mesh, health checking, key/value storage, multi-datacenter support, and secure service-to-service communication.

-dev

Development mode (single node, no persistence)

Run agent in server mode

Address for internal cluster communications (default: 0.0.0.0)

ACL token for authentication

File containing the ACL token

Target datacenter

Consul HTTP API address

Automatically reload configuration when files change

/etc/consul.d/

Configuration directory for Consul agent settings, services, and checks in HCL or JSON format.

agent

Run a Consul agent

List cluster members

Join cluster via agent address

Gracefully leave cluster

Interact with service catalog

Register/deregister services

Key/value store operations

Service mesh functionality

Access control list management

Watch for changes in data views and invoke a process

Fire a custom user event

Remote execution on cluster nodes

Cluster-level operator tools

Save/restore cluster state

Reload agent configuration files

Validate configuration files

Stream logs from a running agent

Create debugging archive

CONSUL_HTTP_ADDR

HTTP API address

ACL token

CA certificate path

Use HTTPS when communicating with Consul

Default DNS port: 8600

$ dig @127.0.0.1 -p 8600 web.service.consul

ACL system requires token for most operations when enabled. Development mode stores everything in memory. Production requires proper clustering configuration.

vault(1), nomad(1), terraform(1)