97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
package command
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/hashicorp/consul/api"
|
|
"github.com/hashicorp/consul/command/base"
|
|
)
|
|
|
|
type OperatorRaftRemoveCommand struct {
|
|
base.Command
|
|
}
|
|
|
|
func (c *OperatorRaftRemoveCommand) Help() string {
|
|
helpText := `
|
|
Usage: consul operator raft remove-peer [options]
|
|
|
|
Remove the Consul server with given -address from the Raft configuration.
|
|
|
|
There are rare cases where a peer may be left behind in the Raft quorum even
|
|
though the server is no longer present and known to the cluster. This command
|
|
can be used to remove the failed server so that it is no longer affects the Raft
|
|
quorum. If the server still shows in the output of the "consul members" command,
|
|
it is preferable to clean up by simply running "consul force-leave" instead of
|
|
this command.
|
|
|
|
` + c.Command.Help()
|
|
|
|
return strings.TrimSpace(helpText)
|
|
}
|
|
|
|
func (c *OperatorRaftRemoveCommand) Synopsis() string {
|
|
return "Remove a Consul server from the Raft configuration"
|
|
}
|
|
|
|
func (c *OperatorRaftRemoveCommand) Run(args []string) int {
|
|
f := c.Command.NewFlagSet(c)
|
|
|
|
var address, id string
|
|
f.StringVar(&address, "address", "",
|
|
"The address to remove from the Raft configuration.")
|
|
f.StringVar(&id, "id", "",
|
|
"The ID to remove from the Raft configuration.")
|
|
|
|
if err := c.Command.Parse(args); err != nil {
|
|
if err == flag.ErrHelp {
|
|
return 0
|
|
}
|
|
c.Ui.Error(fmt.Sprintf("Failed to parse args: %v", err))
|
|
return 1
|
|
}
|
|
|
|
// Set up a client.
|
|
client, err := c.Command.HTTPClient()
|
|
if err != nil {
|
|
c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err))
|
|
return 1
|
|
}
|
|
|
|
// Fetch the current configuration.
|
|
if err := raftRemovePeers(address, id, client.Operator()); err != nil {
|
|
c.Ui.Error(fmt.Sprintf("Error removing peer: %v", err))
|
|
return 1
|
|
}
|
|
if address != "" {
|
|
c.Ui.Output(fmt.Sprintf("Removed peer with address %q", address))
|
|
} else {
|
|
c.Ui.Output(fmt.Sprintf("Removed peer with id %q", id))
|
|
}
|
|
|
|
return 0
|
|
}
|
|
|
|
func raftRemovePeers(address, id string, operator *api.Operator) error {
|
|
if len(address) == 0 && len(id) == 0 {
|
|
return fmt.Errorf("an address or id is required for the peer to remove")
|
|
}
|
|
if len(address) > 0 && len(id) > 0 {
|
|
return fmt.Errorf("cannot give both an address and id")
|
|
}
|
|
|
|
// Try to kick the peer.
|
|
if len(address) > 0 {
|
|
if err := operator.RaftRemovePeerByAddress(address, nil); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
if err := operator.RaftRemovePeerByID(id, nil); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|