openssl certificates K8s

gistfile1.txt

# Master IP
IP=$1
# Output directory
DIR=$2

echo "--> Generate CA.key"
openssl genrsa -out ${DIR}/ca.key 2048

echo "--> Generate CA crt"
openssl req -x509 -new -nodes -key ${DIR}/ca.key -subj "/CN=${IP}" -days 10000 -out ${DIR}/ca.crt

echo "--> Generate a server key"
openssl genrsa -out ${DIR}/server.key 2048

echo "--> Generate a server.csr"
openssl req -new -key ${DIR}/server.key -subj "/CN=${IP}" -out ${DIR}/server.csr

echo "--> Generate a server crt"
openssl x509 -req -in ${DIR}/server.csr -CA ${DIR}/ca.crt -CAkey ${DIR}/ca.key -CAcreateserial -out ${DIR}/server.crt -days 10000

echo "--> View certificate"
openssl x509 -noout -text -in ${DIR}/server.crt