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https://github.com/siderolabs/talos.git
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2277ce8abe
ECDSA keys are smaller which decreases Talos config size, they are more efficient in terms of key generation, signing, etc., so it makes boot performance better (and config generation as well). Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package etcd
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import (
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"fmt"
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stdlibnet "net"
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"os"
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"time"
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"github.com/talos-systems/crypto/x509"
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"github.com/talos-systems/net"
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)
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// GeneratePeerCert generates etcd peer certificate and key from etcd CA.
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func GeneratePeerCert(etcdCA *x509.PEMEncodedCertificateAndKey) (*x509.PEMEncodedCertificateAndKey, error) {
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ips, err := net.IPAddrs()
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if err != nil {
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return nil, fmt.Errorf("failed to discover IP addresses: %w", err)
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}
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ips = append(ips, stdlibnet.ParseIP("127.0.0.1"))
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if net.IsIPv6(ips...) {
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ips = append(ips, stdlibnet.ParseIP("::1"))
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}
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hostname, err := os.Hostname()
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if err != nil {
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return nil, fmt.Errorf("failed to get hostname: %w", err)
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}
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dnsNames, err := net.DNSNames()
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if err != nil {
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return nil, fmt.Errorf("failed to get host DNS names: %w", err)
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}
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dnsNames = append(dnsNames, "localhost")
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opts := []x509.Option{
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x509.CommonName(hostname),
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x509.DNSNames(dnsNames),
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x509.IPAddresses(ips),
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x509.NotAfter(time.Now().Add(87600 * time.Hour)),
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}
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ca, err := x509.NewCertificateAuthorityFromCertificateAndKey(etcdCA, opts...)
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if err != nil {
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return nil, fmt.Errorf("failed loading CA from config: %w", err)
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}
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keyPair, err := x509.NewKeyPair(ca, opts...)
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if err != nil {
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return nil, fmt.Errorf("failed generating peer key pair: %w", err)
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}
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return x509.NewCertificateAndKeyFromKeyPair(keyPair), nil
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}
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