mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-26 03:59:12 +08:00
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
|
package shell
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"flag"
|
||
|
|
"fmt"
|
||
|
|
"github.com/chrislusf/seaweedfs/weed/operation"
|
||
|
|
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
|
||
|
|
"google.golang.org/grpc"
|
||
|
|
"io"
|
||
|
|
)
|
||
|
|
|
||
|
|
func init() {
|
||
|
|
Commands = append(Commands, &commandVolumeServerLeave{})
|
||
|
|
}
|
||
|
|
|
||
|
|
type commandVolumeServerLeave struct {
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *commandVolumeServerLeave) Name() string {
|
||
|
|
return "volumeServer.leave"
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *commandVolumeServerLeave) Help() string {
|
||
|
|
return `stop a volume server from sending heartbeats to the master
|
||
|
|
|
||
|
|
volume.unmount -node <volume server host:port> -force
|
||
|
|
|
||
|
|
This command enables gracefully shutting down the volume server.
|
||
|
|
The volume server will stop sending heartbeats to the master.
|
||
|
|
After draining the traffic for a few seconds, you can safely shut down the volume server.
|
||
|
|
|
||
|
|
This operation is not revocable unless the volume server is restarted.
|
||
|
|
`
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *commandVolumeServerLeave) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
|
||
|
|
|
||
|
|
if err = commandEnv.confirmIsLocked(); err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
vsLeaveCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
|
||
|
|
volumeServer := vsLeaveCommand.String("node", "", "<host>:<port> of the volume server")
|
||
|
|
if err = vsLeaveCommand.Parse(args); err != nil {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
if *volumeServer == "" {
|
||
|
|
return fmt.Errorf("need to specify volume server by -node=<host>:<port>")
|
||
|
|
}
|
||
|
|
|
||
|
|
return volumeServerLeave(commandEnv.option.GrpcDialOption, *volumeServer, writer)
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
func volumeServerLeave(grpcDialOption grpc.DialOption, volumeServer string, writer io.Writer) (err error) {
|
||
|
|
return operation.WithVolumeServerClient(volumeServer, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
|
||
|
|
_, leaveErr := volumeServerClient.VolumeServerLeave(context.Background(), &volume_server_pb.VolumeServerLeaveRequest{})
|
||
|
|
if leaveErr != nil {
|
||
|
|
fmt.Fprintf(writer, "ask volume server %s to leave: %v\n", volumeServer, leaveErr)
|
||
|
|
} else {
|
||
|
|
fmt.Fprintf(writer, "stopped heartbeat in volume server %s. After a few seconds to drain traffic, it will be safe to stop the volume server.\n", volumeServer)
|
||
|
|
}
|
||
|
|
return leaveErr
|
||
|
|
})
|
||
|
|
}
|