60 lines
2.5 KiB
Markdown
60 lines
2.5 KiB
Markdown
---
|
|
layout: "docs"
|
|
page_title: "Required Ports"
|
|
sidebar_current: "docs-install-ports"
|
|
description: |-
|
|
Before starting Consul it is important to have the necessary bind ports accessible.
|
|
---
|
|
|
|
# Required Ports
|
|
|
|
|
|
Consul requires up to 6 different ports to work properly, some on
|
|
TCP, UDP, or both protocols. Below we document the requirements for each
|
|
port.
|
|
|
|
## Ports Table
|
|
|
|
Before running Consul, you should ensure the following bind ports are accessible.
|
|
|
|
|
|
| Use | Default Ports |
|
|
| --------------------------------- | ---------------- |
|
|
| DNS: The DNS server (TCP and UDP) | 8600 |
|
|
| HTTP: The HTTP API (TCP Only) | 8500 |
|
|
| HTTPS: The HTTPs API | disabled (8501)* |
|
|
| gRPC: The gRPC API | disabled (8502)* |
|
|
| LAN Serf: The Serf LAN port (TCP and UDP) | 8301 |
|
|
| Wan Serf: The Serf WAN port TCP and UDP) | 8302 |
|
|
| server: Server RPC address (TCP Only) | 8300 |
|
|
| Sidecar Proxy Min: Inclusive min port number to use for automatically assigned sidecar service registrations. | 21000 |
|
|
| Sidecar Proxy Max: Inclusive max port number to use for automatically assigned sidecar service registrations. | 21255 |
|
|
|
|
*For `HTTPS` and `gRPC` the ports specified in the table
|
|
are recommendations.
|
|
|
|
## Port Information
|
|
|
|
**DNS Interface** Used to resolve DNS queries.
|
|
|
|
**HTTP API** This is used by clients to talk to the HTTP
|
|
API.
|
|
|
|
**HTTPS API** (Optional) Is off by default, but port 8501 is a convention
|
|
used by various tools as the default.
|
|
|
|
**gRPC API** (Optional). Currently gRPC is
|
|
only used to expose the xDS API to Envoy proxies. It is off by default, but port 8502 is a convention used by various tools as the default. Defaults to 8502 in `-dev` mode.
|
|
|
|
**Serf LAN** This is used to handle gossip in the LAN.
|
|
Required by all agents.
|
|
|
|
**Serf WAN** This is used by servers to gossip over the WAN, to
|
|
other servers. As of Consul 0.8 the WAN join flooding feature requires
|
|
the Serf WAN port (TCP/UDP) to be listening on both WAN and LAN interfaces. See also:
|
|
[Consul 0.8.0 CHANGELOG](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#080-april-5-2017) and [GH-3058](https://github.com/hashicorp/consul/issues/3058)
|
|
|
|
**Server RPC** This is used by servers to handle incoming
|
|
requests from other agents.
|
|
|
|
Note, the default ports can be changed in the [agent configuration](/docs/agent/options.html#ports). |