K8S 1.14.6中，将kubeadm集群证书颁发时间延长到100年

更改两个文件，重新编译kubeadm。

1,D:\kubernetes-1.14.6\staging\src\k8s.io\client-go\util\cert\cert.go

// NewSelfSignedCACert creates a CA certificate
func NewSelfSignedCACert(cfg Config, key crypto.Signer) (*x509.Certificate, error) {
    now := time.Now()
    tmpl := x509.Certificate{
        SerialNumber: ),
        Subject: pkix.Name{
            CommonName:   cfg.CommonName,
            Organization: cfg.Organization,
        },
        NotBefore:             now.UTC(),
        NotAfter:              now.Add(duration365d * 100).UTC(),
        KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
        BasicConstraintsValid: true,
        IsCA:                  true,
    }

    certDERBytes, err := x509.CreateCertificate(cryptorand.Reader, &tmpl, &tmpl, key.Public(), key)
    if err != nil {
        return nil, err
    }
    return x509.ParseCertificate(certDERBytes)
}

2,D:\kubernetes-1.14.6\cmd\kubeadm\app\util\pkiutil\pki_helpers.go

// NewSignedCert creates a signed certificate using the given CA certificate and key
func NewSignedCert(cfg *certutil.Config, key crypto.Signer, caCert *x509.Certificate, caKey crypto.Signer) (*x509.Certificate, error) {
    serial, err := rand.Int(rand.Reader, new(big.Int).SetInt64(math.MaxInt64))
    if err != nil {
        return nil, err
    }
     {
        return nil, errors.New("must specify a CommonName")
    }
     {
        return nil, errors.New("must specify at least one ExtKeyUsage")
    }

    certTmpl := x509.Certificate{
        Subject: pkix.Name{
            CommonName:   cfg.CommonName,
            Organization: cfg.Organization,
        },
        DNSNames:     cfg.AltNames.DNSNames,
        IPAddresses:  cfg.AltNames.IPs,
        SerialNumber: serial,
        NotBefore:    caCert.NotBefore,
        NotAfter:     time.Now().Add(duration365d * 100).UTC(),
        KeyUsage:     x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
        ExtKeyUsage:  cfg.Usages,
    }
    certDERBytes, err := x509.CreateCertificate(cryptorand.Reader, &certTmpl, caCert, key.Public(), caKey)
    if err != nil {
        return nil, err
    }
    return x509.ParseCertificate(certDERBytes)
}