step ca renew – renew a valid certificate
step ca renew
step ca renew command renews the given certificate (with a request to the
certificate authority) and writes the new certificate to disk - either overwriting
crt-file or using a new file when the –out=
file flag is used.
With the –daemon flag the command will periodically update the given certificate. By default, it will renew the certificate before 2/3 of the validity period of the certificate has elapsed. A random jitter is used to avoid multiple instances running at the same time. The amount of time between renewal and certificate expiration can be configured using the –expires-in flag, or a fixed period can be set with the –renew-period flag.
The –daemon flag can be combined with –pid, –signal, or –exec to provide certificate reloads on your services.
- The certificate in PEM format that we want to renew.
- They key file of the certificate.
pathto the certificate authority configuration file. Defaults to $STEPPATH/config/ca.json
URIof the targeted Step Certificate Authority.
- -f, –force
- Force the overwrite of files without asking.
- Creates a certificate without contacting the certificate authority. Offline mode uses the configuration, certificates, and keys created with step ca init, but can accept a different configuration file using ‘–ca-config`’ flag.
- The path to the PEM
fileused as the root certificate authority.
- The new certificate
filepath. Defaults to overwriting the
- The amount of time remaining before certificate expiration,
at which point a renewal should be attempted. The certificate renewal will not
be performed if the time to expiration is greater than the –expires-in value.
A random jitter (duration/20) will be added to avoid multiple services hitting the
renew endpoint at the same time. The
durationis a sequence of decimal numbers, each with optional fraction and a unit suffix, such as “300ms”, “-1.5h” or “2h45m”. Valid time units are “ns”, “us” (or “µs”), “ms”, “s”, “m”, “h”.
- The process id to signal after the certificate has been renewed. By default the the SIGHUP (1) signal will be used, but this can be configured with the –signal flag.
- The signal
numberto send to the selected PID, so it can reload the configuration and load the new certificate. Default value is SIGHUP (1)
commandto run after the certificate has been renewed.
- Run the renew command as a daemon, renewing and overwriting the certificate periodically. By default the daemon will renew a certificate before 2/3 of the time to expiration has elapsed. The period can be configured using the –renew-period or –expires-in flags.
- The period with which to schedule renewals of the certificate in daemon mode.
Requires the –daemon flag. The
durationis a sequence of decimal numbers, each with optional fraction and a unit suffix, such as “300ms”, “1.5h”, or “2h45m”. Valid time units are “ns”, “us” (or “µs”), “ms”, “s”, “m”, “h”.
Renew a certificate with the configured CA:
$ step ca renew internal.crt internal.key Would you like to overwrite internal.crt [Y/n]: y
Renew a certificate without overwriting the previous certificate:
$ step ca renew --out renewed.crt internal.crt internal.key
Renew a certificate forcing the overwrite of the previous certificate:
$ step ca renew --force internal.crt internal.key
Renew a certificate providing the
$ step ca renew --ca-url https://ca.smallstep.com:9000 \ --root /path/to/root_ca.crt internal.crt internal.key Would you like to overwrite internal.crt [Y/n]: y
Renew skipped because it was too early:
$ step ca renew --expires-in 8h internal.crt internal.key certificate not renewed: expires in 10h52m5s
Renew the certificate before 2/3 of the validity has passed:
$ step ca renew --daemon internal.crt internal.key
Renew the certificate before 8 hours and 30m of the expiration time:
$ step ca renew --daemon --expires-in 8h30m internal.crt internal.key
Renew the certificate every 16h:
$ step ca renew --daemon --renew-period 16h internal.crt internal.key
Renew the certificate and reload nginx:
$ step ca renew --daemon --exec "nginx -s reload" internal.crt internal.key
Renew the certificate and convert it to DER:
$ step ca renew --daemon --renew-period 16h \ --exec "step certificate format --force --out internal.der internal.crt" \ internal.crt internal.key
Renew a certificate using the offline mode, requires the configuration files, certificates, and keys created with step ca init:
$ step ca renew --offline internal.crt internal.key