我正在尝试创建我的自签名证书：
- CA 私钥创建：
openssl genrsa -out ca.key 2048 - CA 证书创建（见下文
ca.cnf内容）：openssl req -x509 -new -key ca.key -out ca.crt -days 10000 -config ca.cnf - 服务私钥创建：
openssl genrsa -out cert.key 2048 - 创建 csr（见下文
node.cnf）：openssl req -new -key cert.key -out cert.csr -config node.cnf - 创建服务器证书：
openssl x509 -req -in cert.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out cert.crt -days 100
之后，我尝试检查我的 SAN 是否已填充：
我明白了：
openssl x509 -noout -ext subjectAltName -in cert.crt
No extensions in certificate
有任何想法吗？
ca.cnf文件是：
# OpenSSL CA configuration file
[ ca ]
default_ca = CA_default
[ CA_default ]
default_days = 365
database = index.txt
serial = serial.txt
default_md = sha256
copy_extensions = copy
unique_subject = no
# Used to create the CA certificate.
[ req ]
prompt=no
distinguished_name = distinguished_name
x509_extensions = extensions
[ distinguished_name ]
organizationName = jeusdi
commonName = cicdgitops
[ extensions ]
keyUsage = critical,digitalSignature,nonRepudiation,keyEncipherment,keyCertSign
basicConstraints = critical,CA:true,pathlen:1
# Common policy for nodes and users.
[ signing_policy ]
organizationName = supplied
commonName = optional
# Used to sign node certificates.
[ signing_node_req ]
keyUsage = critical,digitalSignature,keyEncipherment
extendedKeyUsage = serverAuth,clientAuth
# Used to sign client certificates.
[ signing_client_req ]
keyUsage = critical,digitalSignature,keyEncipherment
extendedKeyUsage = clientAuth
node.cnf：
# OpenSSL node configuration file
[ req ]
prompt=no
distinguished_name = distinguished_name
req_extensions = extensions
[ distinguished_name ]
organizationName = jeusdi
[ extensions ]
subjectAltName = @alt_names
[alt_names]
DNS.1 = registry.localhost
DNS.2 = host.k3d.internal
