How to start and stop a specific TiKV or PD instance in a TiKV cluster defined by topology.yaml?

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Original topic: 如何启动和关闭由topology.yaml定义的TiKV集群中某一个TiKV或者PD实例？

| username: abelard2008

I want to practice the high availability of the TiKV cluster, such as shutting down one TiKV or PD instance in the cluster. On one server, I used the following topology.yaml file:

global:
  user: "root"
  ssh_port: 22
#  deploy_dir: "/data/sdb/tikv-cluster/tikv-deploy"
#  data_dir: "/data/sdb/tikv-cluster/tikv-data"
server_configs:
    pd:
        replication.location-labels: [host]
pd_servers:
  - host: 192.168.127.50
    client_port: 2379
    peer_port: 2380
  - host: 192.168.127.50
    client_port: 12379
    peer_port: 12380
  - host: 192.168.127.50
    client_port: 22379
    peer_port: 22380

tikv_servers:
  - host: 192.168.127.50
    port: 20160
    status_port: 10080
    deploy_dir: "/data/sdb/tikv-cluster/tikv-deploy"
    data_dir: "/data/sdb/tikv-cluster/tikv-data"
    config:
        server.labels:
            host: "tikv-20160"
  - host: 192.168.127.50
    port: 20161
    status_port: 10081
    deploy_dir: "/data/sdc/tikv-cluster/tikv-deploy"
    data_dir: "/data/sdc/tikv-cluster/tikv-data"
    config:
        server.labels:
            host: "tikv-20161"
  - host: 192.168.127.50
    port: 20162
    status_port: 10082
    deploy_dir: "/data/sdd/tikv-cluster/tikv-deploy"
    data_dir: "/data/sdd/tikv-cluster/tikv-data"
    config:
        server.labels:
            host: "tikv-20162"

monitoring_servers:
  - host: 192.168.127.50

grafana_servers:
  - host: 192.168.127.50

alertmanager_servers:
  - host: 192.168.127.50

The current operation is normal:

[root@cs2-slice-node50 tikv-cluster]# tiup cluster display cluster-tikv
tiup is checking updates for component cluster ...
Starting component `cluster`: /root/.tiup/components/cluster/v1.11.1/tiup-cluster display cluster-tikv
Cluster type:       tidb
Cluster name:       cluster-tikv
Cluster version:    v5.3.0
Deploy user:        root
SSH type:           builtin
Dashboard URL:      http://192.168.127.50:2379/dashboard
Grafana URL:        http://192.168.127.50:3000
ID                   Role          Host           Ports        OS/Arch       Status  Data Dir                                  Deploy Dir
--                   ----          ----           -----        -------       ------  --------                                  ----------
192.168.127.50:9093   alertmanager  192.168.127.50  9093/9094    linux/x86_64  Up      /home/root/deploy/alertmanager-9093/data  /home/root/deploy/alertmanager-9093
192.168.127.50:3000   grafana       192.168.127.50  3000         linux/x86_64  Up      -                                         /home/root/deploy/grafana-3000
192.168.127.50:12379  pd            192.168.127.50  12379/12380  linux/x86_64  Up      /home/root/deploy/pd-12379/data           /home/root/deploy/pd-12379
192.168.127.50:22379  pd            192.168.127.50  22379/22380  linux/x86_64  Up|L    /home/root/deploy/pd-22379/data           /home/root/deploy/pd-22379
192.168.127.50:2379   pd            192.168.127.50  2379/2380    linux/x86_64  Up|UI   /home/root/deploy/pd-2379/data            /home/root/deploy/pd-2379
192.168.127.50:9090   prometheus    192.168.127.50  9090         linux/x86_64  Up      /home/root/deploy/prometheus-9090/data    /home/root/deploy/prometheus-9090
192.168.127.50:20160  tikv          192.168.127.50  20160/10080  linux/x86_64  Up      /data/sdb/tikv-cluster/tikv-data          /data/sdb/tikv-cluster/tikv-deploy
192.168.127.50:20161  tikv          192.168.127.50  20161/10081  linux/x86_64  Up      /data/sdc/tikv-cluster/tikv-data          /data/sdc/tikv-cluster/tikv-deploy
192.168.127.50:20162  tikv          192.168.127.50  20162/10082  linux/x86_64  Up      /data/sdd/tikv-cluster/tikv-data          /data/sdd/tikv-cluster/tikv-deploy
Total nodes: 9

I want to ask: How to gracefully shut down or start one of the TiKV or PD instances? Is there any related documentation? Thank you!

2
| username: 我是咖啡哥 | Original post link

For example, to stop one of the nodes:
tiup cluster stop <cluster-name> -N 192.168.127.50:20160

3
| username: abelard2008 | Original post link

@我是咖啡哥 Thank you, is there any example documentation that describes, for example, the strings in --node strings? Of course, your answer already provided a perfect example.

4
| username: 我是咖啡哥 | Original post link

Yes, there is. Refer to the official documentation:

5
| username: 我是咖啡哥 | Original post link

The string is the ID column displayed.

6
| username: tidb菜鸟一只 | Original post link
7
| username: system | Original post link

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