k3s/pkg/dqlite/reset.go

41 lines
966 B
Go

package dqlite
import (
"context"
"fmt"
"github.com/canonical/go-dqlite/client"
"github.com/sirupsen/logrus"
)
func (d *DQLite) Reset(ctx context.Context) error {
dqClient, err := client.New(ctx, d.getBindAddress(), client.WithLogFunc(log()))
if err != nil {
return err
}
current, err := dqClient.Cluster(ctx)
if err != nil {
return err
}
// There's a chance our ID and the ID the server has doesn't match so find the ID
var surviving []client.NodeInfo
for _, testNode := range current {
if testNode.Address == d.NodeInfo.Address && testNode.ID == d.NodeInfo.ID {
surviving = append(surviving, testNode)
continue
}
if err := dqClient.Remove(ctx, testNode.ID); err != nil {
return err
}
}
if len(surviving) != 1 {
return fmt.Errorf("failed to find %s in the current node, can not reset", d.NodeInfo.Address)
}
logrus.Infof("Resetting cluster to single master, please rejoin members")
return d.node.Recover(surviving)
}