---
name: "docker-swarm-ca"
section: "1"
platform: "linux"
package: "docker"
version: "1:29.9.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/docker-swarm-ca"
---

# docker-swarm-ca(1)

Display and rotate the root CA

## NAME

docker-swarm-ca - Display and rotate the root CA

## SYNOPSIS

**docker swarm ca \[OPTIONS\]**

## DESCRIPTION

Display and rotate the root CA

## OPTIONS

**--ca-cert**=\
 	Path to the PEM-formatted root CA certificate to use for the new cluster

**--ca-key**=\
 	Path to the PEM-formatted root CA key to use for the new cluster

**--cert-expiry**=2160h0m0s\
 	Validity period for node certificates (ns\|us\|ms\|s\|m\|h)

**-d**, **--detach**\[=false\]\
 	Exit immediately instead of waiting for the root rotation to converge

**--external-ca**=\
 	Specifications of one or more certificate signing endpoints

**-q**, **--quiet**\[=false\]\
 	Suppress progress output

**--rotate**\[=false\]\
 	Rotate the swarm CA - if no certificate or key are provided, new ones will be generated

## SEE ALSO

**[docker-swarm(1)](/docker-swarm/1.md)**