github.com/pingcap/tiup@v1.15.1/components/cluster/command/scale_in.go (about)

     1  // Copyright 2020 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package command
    15  
    16  import (
    17  	"crypto/tls"
    18  
    19  	operator "github.com/pingcap/tiup/pkg/cluster/operation"
    20  	"github.com/pingcap/tiup/pkg/cluster/spec"
    21  	"github.com/pingcap/tiup/pkg/cluster/task"
    22  	"github.com/spf13/cobra"
    23  )
    24  
    25  func newScaleInCmd() *cobra.Command {
    26  	cmd := &cobra.Command{
    27  		Use:   "scale-in <cluster-name>",
    28  		Short: "Scale in a TiDB cluster",
    29  		RunE: func(cmd *cobra.Command, args []string) error {
    30  			if len(args) != 1 {
    31  				return cmd.Help()
    32  			}
    33  
    34  			clusterName := args[0]
    35  			clusterReport.ID = scrubClusterName(clusterName)
    36  			teleCommand = append(teleCommand, scrubClusterName(clusterName))
    37  
    38  			scale := func(b *task.Builder, imetadata spec.Metadata, tlsCfg *tls.Config) {
    39  				metadata := imetadata.(*spec.ClusterMeta)
    40  
    41  				nodes := gOpt.Nodes
    42  				if !gOpt.Force {
    43  					nodes = operator.AsyncNodes(metadata.Topology, nodes, false)
    44  				}
    45  
    46  				b.ClusterOperate(metadata.Topology, operator.ScaleInOperation, gOpt, tlsCfg).
    47  					UpdateMeta(clusterName, metadata, nodes).
    48  					UpdateTopology(clusterName, tidbSpec.Path(clusterName), metadata, nodes)
    49  			}
    50  
    51  			return cm.ScaleIn(clusterName, skipConfirm, gOpt, scale)
    52  		},
    53  		ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
    54  			switch len(args) {
    55  			case 0:
    56  				return shellCompGetClusterName(cm, toComplete)
    57  			default:
    58  				return nil, cobra.ShellCompDirectiveNoFileComp
    59  			}
    60  		},
    61  	}
    62  
    63  	cmd.Flags().StringSliceVarP(&gOpt.Nodes, "node", "N", nil, "Specify the nodes (required)")
    64  	cmd.Flags().Uint64Var(&gOpt.APITimeout, "transfer-timeout", 600, "Timeout in seconds when transferring PD and TiKV store leaders, also for TiCDC drain one capture")
    65  	cmd.Flags().BoolVar(&gOpt.Force, "force", false, "Force just try stop and destroy instance before removing the instance from topo")
    66  
    67  	_ = cmd.MarkFlagRequired("node")
    68  
    69  	return cmd
    70  }