How do i set the expiry date on my self-signed openssl certificate?

saolasosme

The default when you create self-signed certificate is 1 month (30 days)

To create a longer expiry use the days option.

       -days arg
           Specifies the number of days to make a certificate valid for. The
           default is 30 days. Cannot be used with the -preserve_dates option.

One year expiry.

$  openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -keyout myselfsigned.key -out mycert.pem