准备cfssl环境

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wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -O     /usr/local/bin/cfssl
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -O      /usr/local/bin/cfssljson
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -O /usr/local/bin/cfssl-certinfo
chmod +x /usr/local/bin/cfssl*

生成ca证书

证书配置

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cat > ca-config.json <<EOF
{
  "signing": {
    "default": {
      "expiry": "8760h"
    },
    "profiles": {
      "app": {
        "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ],
        "expiry": "8760h"
      }
    }
  }
}
EOF

证书请求配置

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cat > ca-csr.json <<EOF
{
  "CN": "k8s",
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "BeiJing",
      "L": "BeiJing",
      "O": "k8s",
      "OU": "System"
    }
  ]
}
EOF

命令

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cfssl gencert -initca ca-csr.json | cfssljson -bare ca

生成server证书

请求文件配置

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cat > app-csr.json <<EOF
{
  "CN": "app",
  "hosts": [
    "127.0.0.1",
    "192.168.1.11",
    "app",
    "app.ma.com"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "BeiJing",
      "L": "BeiJing",
      "O": "k8s",
      "OU": "System"
    }
  ]
}
EOF

命令

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cfssl gencert -ca=/root/keys/ca.pem \
  -ca-key=/root/keys/ca-key.pem \
  -config=/root/keys/ca-config.json \
  -profile=app app-csr.json | cfssljson -bare app

查看证书

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cfssl-certinfo -cert ca.pem