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