.nh .TH "DOCKER" "1" "Dec 2020" "Docker Community" "Docker User Manuals" .SH NAME .PP docker\-swarm\-ca \- Display and rotate the root CA .SH SYNOPSIS .PP \fBdocker swarm ca [OPTIONS]\fP .SH DESCRIPTION .PP Display and rotate the root CA .SH OPTIONS .PP \fB\-\-ca\-cert\fP= Path to the PEM\-formatted root CA certificate to use for the new cluster .PP \fB\-\-ca\-key\fP= Path to the PEM\-formatted root CA key to use for the new cluster .PP \fB\-\-cert\-expiry\fP=2160h0m0s Validity period for node certificates (ns|us|ms|s|m|h) .PP \fB\-d\fP, \fB\-\-detach\fP[=false] Exit immediately instead of waiting for the root rotation to converge .PP \fB\-\-external\-ca\fP= Specifications of one or more certificate signing endpoints .PP \fB\-h\fP, \fB\-\-help\fP[=false] help for ca .PP \fB\-q\fP, \fB\-\-quiet\fP[=false] Suppress progress output .PP \fB\-\-rotate\fP[=false] Rotate the swarm CA \- if no certificate or key are provided, new ones will be generated .SH SEE ALSO .PP \fBdocker\-swarm(1)\fP