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join: join over lb if available (#2348)

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* join: join over lb if available
This commit is contained in:
3u13r 2023-09-25 10:23:35 +02:00 • committed by GitHub
parent df77696620
commit 2776e40df7
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12 changed files with 142 additions and 62 deletions
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33
bootstrapper/internal/joinclient/joinclient.go
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@ -186,17 +186,29 @@ func (c *JoinClient) Stop() {
}
func (c *JoinClient) tryJoinWithAvailableServices() error {
ips, err := c.getControlPlaneIPs()
if err != nil {
return err
}
ctx, cancel := c.timeoutCtx()
defer cancel()
if len(ips) == 0 {
var endpoints []string
ip, _, err := c.metadataAPI.GetLoadBalancerEndpoint(ctx)
if err != nil {
return fmt.Errorf("failed to get load balancer endpoint: %w", err)
}
endpoints = append(endpoints, net.JoinHostPort(ip, strconv.Itoa(constants.JoinServiceNodePort)))
ips, err := c.getControlPlaneIPs(ctx)
if err != nil {
return fmt.Errorf("failed to get control plane IPs: %w", err)
}
endpoints = append(endpoints, ips...)
if len(endpoints) == 0 {
return errors.New("no control plane IPs found")
}
for _, ip := range ips {
err = c.join(net.JoinHostPort(ip, strconv.Itoa(constants.JoinServiceNodePort)))
for _, endpoint := range endpoints {
err = c.join(net.JoinHostPort(endpoint, strconv.Itoa(constants.JoinServiceNodePort)))
if err == nil {
return nil
}
@ -357,10 +369,7 @@ func (c *JoinClient) getDiskUUID() (string, error) {
return c.disk.UUID()
}
func (c *JoinClient) getControlPlaneIPs() ([]string, error) {
ctx, cancel := c.timeoutCtx()
defer cancel()
func (c *JoinClient) getControlPlaneIPs(ctx context.Context) ([]string, error) {
instances, err := c.metadataAPI.List(ctx)
if err != nil {
c.log.With(zap.Error(err)).Errorf("Failed to list instances from metadata API")
@ -425,6 +434,8 @@ type MetadataAPI interface {
List(ctx context.Context) ([]metadata.InstanceMetadata, error)
// Self retrieves the current instance.
Self(ctx context.Context) (metadata.InstanceMetadata, error)
// GetLoadBalancerEndpoint retrieves the load balancer endpoint.
GetLoadBalancerEndpoint(ctx context.Context) (host, port string, err error)
}
type encryptedDisk interface {