kubernetes ca.crt

kubernetes ca.crt would look something like this (missing -----BEGIN CERTIFICATE----- and -----END CERTIFICATE-----

So you might not be able to use openssl to view it unless you add those in --- as shown below

MIIC/jCCAeagAwIBAgIBADANBgkqhkiG9w0BAQsFADAVMRMwEQYDVQQDEwprdWJl

cm5ldGVzMB4XDTIzMTEwOTE1MzYwMloXDTMzMTEwNjE1MzYwMlowFTETMBEGA1UE

AxMKa3ViZXJuZXRlczCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAL6k

oE+D6EywDSjyJYbp6kSqpTAg59IN2NXZVKzF7fp3ePJcF+jsHXZlqi++aFA3DA3y

jPv8KVrT8h0kJLt6Tcyzt6oU/MxhEs4VIb1hdaqoaubuydFa++npM6Ca4uPAHhuW

xFQdOmNOuIrgk5zmZWwoYIlxPNdXt0DYZXs2ohdSG949OOYUGrKhkXGNTjsjlZIk

N69FCnNr5KjLFBEq/w48DY9tcwnIsUqNt4HICGtl0ogb+n/OPCcU3uxaqws/HYns

VV9NYY+msoczuYhtwGVjpHd7LZbzvR6mw9/tK38m1PT1GEo30/0cj0+vKIrqZDuM

YqnOK2Eok+loudCnkoUCAwEAAaNZMFcwDgYDVR0PAQH/BAQDAgKkMA8GA1UdEwEB

/wQFMAMBAf8wHQYDVR0OBBYEFNJ8x9zzVLYmRfhVC/MJPWBqzjboMBUGA1UdEQQO

MAyCCmt1YmVybmV0ZXMwDQYJKoZIhvcNAQELBQADggEBAAXtnuLkTdHv/UZgKP0H

l5X4txvmpbUbEXcCjWdVTNC8kHxbbky2REaCm2z5fX86CG/LFF9UrHMSAcWa5hB+

4z89p4WSgwB6lDiIg6c7GQrupOtKkQEQPS+WkZLSNy2vDmqn6fcKcRM6Nridd0NM

p86e37eXPG/OduI7usdS9SBg4GzmgBDuCbgTtVEKLoeHaaLiCDMoScwGiG4tZYcM

t702ceAxwCLfLsaAqnGntpZeMRek52GQhHvnO+WWIQeqraCupTNM+gTAdWECOJ5l

lXirflYX1a/MfEg95LVQtk2eP9XM2oxs5+olLbRpa5Roa2Z2rA0izhYk8JbkrsT/

4TA=

Works with

cat yourfile.crt | openssl x509 -text

or you can use

openssl x509 -in ca.crt -text

-----BEGIN CERTIFICATE-----