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Merge pull request #90645 from neolit123/1.19-fix-retry-etcd-member-add

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kubeadm: fix flakes when performing etcd MemberAdd on slower setups
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Kubernetes Prow Robot 2020-05-13 06:04:26 -07:00 committed by GitHub
commit 3b024339bd
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1 changed files with 21 additions and 12 deletions
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33
cmd/kubeadm/app/util/etcd/etcd.go
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@ -351,23 +351,32 @@ func (c *Client) AddMember(name string, peerAddrs string) ([]Member, error) {
return nil, errors.Wrapf(err, "error parsing peer address %s", peerAddrs)
}
cli, err := clientv3.New(clientv3.Config{
Endpoints: c.Endpoints,
DialTimeout: dialTimeout,
DialOptions: []grpc.DialOption{
grpc.WithBlock(), // block until the underlying connection is up
},
TLS: c.TLS,
})
if err != nil {
return nil, err
// Exponential backoff for the MemberAdd operation (up to ~200 seconds)
etcdBackoffAdd := wait.Backoff{
Steps: 18,
Duration: 100 * time.Millisecond,
Factor: 1.5,
Jitter: 0.1,
}
defer cli.Close()
// Adds a new member to the cluster
var lastError error
var resp *clientv3.MemberAddResponse
err = wait.ExponentialBackoff(etcdBackoff, func() (bool, error) {
err = wait.ExponentialBackoff(etcdBackoffAdd, func() (bool, error) {
cli, err := clientv3.New(clientv3.Config{
Endpoints: c.Endpoints,
DialTimeout: etcdTimeout,
DialOptions: []grpc.DialOption{
grpc.WithBlock(), // block until the underlying connection is up
},
TLS: c.TLS,
})
if err != nil {
lastError = err
return false, nil
}
defer cli.Close()
ctx, cancel := context.WithTimeout(context.Background(), etcdTimeout)
resp, err = cli.MemberAdd(ctx, []string{peerAddrs})
cancel()