mirror of https://github.com/status-im/consul.git
92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
package command
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
)
|
|
|
|
// SnapshotRestoreCommand is a Command implementation that is used to restore
|
|
// the state of the Consul servers for disaster recovery.
|
|
type SnapshotRestoreCommand struct {
|
|
BaseCommand
|
|
}
|
|
|
|
func (c *SnapshotRestoreCommand) Help() string {
|
|
helpText := `
|
|
Usage: consul snapshot restore [options] FILE
|
|
|
|
Restores an atomic, point-in-time snapshot of the state of the Consul servers
|
|
which includes key/value entries, service catalog, prepared queries, sessions,
|
|
and ACLs.
|
|
|
|
Restores involve a potentially dangerous low-level Raft operation that is not
|
|
designed to handle server failures during a restore. This command is primarily
|
|
intended to be used when recovering from a disaster, restoring into a fresh
|
|
cluster of Consul servers.
|
|
|
|
If ACLs are enabled, a management token must be supplied in order to perform
|
|
snapshot operations.
|
|
|
|
To restore a snapshot from the file "backup.snap":
|
|
|
|
$ consul snapshot restore backup.snap
|
|
|
|
For a full list of options and examples, please see the Consul documentation.
|
|
|
|
` + c.BaseCommand.Help()
|
|
|
|
return strings.TrimSpace(helpText)
|
|
}
|
|
|
|
func (c *SnapshotRestoreCommand) Run(args []string) int {
|
|
flagSet := c.BaseCommand.NewFlagSet(c)
|
|
|
|
if err := c.BaseCommand.Parse(args); err != nil {
|
|
return 1
|
|
}
|
|
|
|
var file string
|
|
|
|
args = flagSet.Args()
|
|
switch len(args) {
|
|
case 0:
|
|
c.UI.Error("Missing FILE argument")
|
|
return 1
|
|
case 1:
|
|
file = args[0]
|
|
default:
|
|
c.UI.Error(fmt.Sprintf("Too many arguments (expected 1, got %d)", len(args)))
|
|
return 1
|
|
}
|
|
|
|
// Create and test the HTTP client
|
|
client, err := c.BaseCommand.HTTPClient()
|
|
if err != nil {
|
|
c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
|
|
return 1
|
|
}
|
|
|
|
// Open the file.
|
|
f, err := os.Open(file)
|
|
if err != nil {
|
|
c.UI.Error(fmt.Sprintf("Error opening snapshot file: %s", err))
|
|
return 1
|
|
}
|
|
defer f.Close()
|
|
|
|
// Restore the snapshot.
|
|
err = client.Snapshot().Restore(nil, f)
|
|
if err != nil {
|
|
c.UI.Error(fmt.Sprintf("Error restoring snapshot: %s", err))
|
|
return 1
|
|
}
|
|
|
|
c.UI.Info("Restored snapshot")
|
|
return 0
|
|
}
|
|
|
|
func (c *SnapshotRestoreCommand) Synopsis() string {
|
|
return "Restores snapshot of Consul server state"
|
|
}
|