mirror of https://github.com/hashicorp/consul
98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
package command
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"strings"
|
|
)
|
|
|
|
type OperatorRaftCommand struct {
|
|
BaseCommand
|
|
}
|
|
|
|
func (c *OperatorRaftCommand) Help() string {
|
|
helpText := `
|
|
Usage: consul operator raft <subcommand> [options]
|
|
|
|
The Raft operator command is used to interact with Consul's Raft subsystem. The
|
|
command can be used to verify Raft peers or in rare cases to recover quorum by
|
|
removing invalid peers.
|
|
|
|
Subcommands:
|
|
|
|
list-peers Display the current Raft peer configuration
|
|
remove-peer Remove a Consul server from the Raft configuration
|
|
|
|
`
|
|
|
|
return strings.TrimSpace(helpText)
|
|
}
|
|
|
|
func (c *OperatorRaftCommand) Synopsis() string {
|
|
return "Provides cluster-level tools for Consul operators"
|
|
}
|
|
|
|
func (c *OperatorRaftCommand) Run(args []string) int {
|
|
if result := c.raft(args); result != nil {
|
|
c.UI.Error(result.Error())
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
|
|
// raft handles the raft subcommands.
|
|
func (c *OperatorRaftCommand) raft(args []string) error {
|
|
f := c.BaseCommand.NewFlagSet(c)
|
|
|
|
// Parse verb arguments.
|
|
var listPeers, removePeer bool
|
|
f.BoolVar(&listPeers, "list-peers", false,
|
|
"If this flag is provided, the current Raft peer configuration will be "+
|
|
"displayed. If the cluster is in an outage state without a leader, you may need "+
|
|
"to set -stale to 'true' to get the configuration from a non-leader server.")
|
|
f.BoolVar(&removePeer, "remove-peer", false,
|
|
"If this flag is provided, the Consul server with the given -address will be "+
|
|
"removed from the Raft configuration.")
|
|
|
|
// Parse other arguments.
|
|
var address string
|
|
f.StringVar(&address, "address", "",
|
|
"The address to remove from the Raft configuration.")
|
|
|
|
// Leave these flags for backwards compatibility, but hide them
|
|
// TODO: remove flags/behavior from this command in Consul 0.9
|
|
c.BaseCommand.HideFlags("list-peers", "remove-peer", "address")
|
|
|
|
if err := c.BaseCommand.Parse(args); err != nil {
|
|
if err == flag.ErrHelp {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Set up a client.
|
|
client, err := c.BaseCommand.HTTPClient()
|
|
if err != nil {
|
|
return fmt.Errorf("error connecting to Consul agent: %s", err)
|
|
}
|
|
|
|
// Dispatch based on the verb argument.
|
|
if listPeers {
|
|
result, err := raftListPeers(client, c.BaseCommand.HTTPStale())
|
|
if err != nil {
|
|
c.UI.Error(fmt.Sprintf("Error getting peers: %v", err))
|
|
}
|
|
c.UI.Output(result)
|
|
} else if removePeer {
|
|
if err := raftRemovePeers(address, "", client.Operator()); err != nil {
|
|
return fmt.Errorf("Error removing peer: %v", err)
|
|
}
|
|
c.UI.Output(fmt.Sprintf("Removed peer with address %q", address))
|
|
} else {
|
|
c.UI.Output(c.Help())
|
|
return nil
|
|
}
|
|
|
|
return nil
|
|
}
|