为提高效率，请提供以下信息，问题描述清晰能够更快得到解决：
【TiDB 版本】
v4.0.11
【问题描述】
近期在学习Tidb，如何从一个TiKV节点恢复集群
当前集群拓扑
# tiup cluster display daddylab-tidb-cluster
Found cluster newer version:
The latest version: v1.4.1
Local installed version: v1.3.4
Update current component: tiup update cluster
Update all components: tiup update --all
Starting component `cluster`: /root/.tiup/components/cluster/v1.3.4/tiup-cluster display daddylab-tidb-cluster
Cluster type: tidb
Cluster name: daddylab-tidb-cluster
Cluster version: v4.0.11
SSH type: builtin
Dashboard URL: http://172.16.12.128:2379/dashboard
ID Role Host Ports OS/Arch Status Data Dir Deploy Dir
-- ---- ---- ----- ------- ------ -------- ----------
172.16.12.216:9093 alertmanager 172.16.12.216 9093/9094 linux/x86_64 Up /tidb-data/alertmanager-9093 /tidb-deploy/alertmanager-9093
172.16.12.216:8249 drainer 172.16.12.216 8249 linux/x86_64 Down /tidb-data/drainer-8249 /tidb-deploy/drainer-8249
172.16.12.216:3000 grafana 172.16.12.216 3000 linux/x86_64 Up - /tidb-deploy/grafana-3000
172.16.12.128:2379 pd 172.16.12.128 2379/2380 linux/x86_64 Up|L|UI /tidb-data/pd-2379 /tidb-deploy/pd-2379
172.16.12.150:2379 pd 172.16.12.150 2379/2380 linux/x86_64 Up /tidb-data/pd-2379 /tidb-deploy/pd-2379
172.16.12.217:2379 pd 172.16.12.217 2379/2380 linux/x86_64 Up /tidb-data/pd-2379 /tidb-deploy/pd-2379
172.16.12.216:9090 prometheus 172.16.12.216 9090 linux/x86_64 Up /tidb-data/prometheus-9090 /tidb-deploy/prometheus-9090
172.16.12.123:8250 pump 172.16.12.123 8250 linux/x86_64 Up /tidb-data/pump-8250 /tidb-deploy/pump-8250
172.16.12.142:8250 pump 172.16.12.142 8250 linux/x86_64 Up /tidb-data/pump-8250 /tidb-deploy/pump-8250
172.16.12.161:8250 pump 172.16.12.161 8250 linux/x86_64 Up /tidb-data/pump-8250 /tidb-deploy/pump-8250
172.16.12.171:4000 tidb 172.16.12.171 4000/10080 linux/x86_64 Up - /tidb-deploy/tidb-4000
172.16.12.208:4000 tidb 172.16.12.208 4000/10080 linux/x86_64 Up - /tidb-deploy/tidb-4000
172.16.12.213:4000 tidb 172.16.12.213 4000/10080 linux/x86_64 Up - /tidb-deploy/tidb-4000
172.16.12.138:20160 tikv 172.16.12.138 20160/20180 linux/x86_64 Up /tidb-data/tikv-20160 /tidb-deploy/tikv-20160
Total nodes: 14
连接状态
mysql> show databases;
ERROR 9005 (HY000): Region is unavailable
stroe状态
## ./pd-ctl -u 172.16.12.217:2379 store
{
"count": 3,
"stores": [
{
"store": {
"id": 5,
"address": "172.16.12.138:20160",
"version": "4.0.11",
"status_address": "172.16.12.138:20180",
"git_hash": "4ac5e7ea1839d63163e911e2e1164d663f49592b",
"start_timestamp": 1616534161,
"deploy_path": "/tidb-deploy/tikv-20160/bin",
"last_heartbeat": 1619082008327760337,
"state_name": "Up"
},
"status": {
"capacity": "500GiB",
"available": "429.5GiB",
"used_size": "46.29GiB",
"leader_count": 5702,
"leader_weight": 1,
"leader_score": 5702,
"leader_size": 98886,
"region_count": 11731,
"region_weight": 1,
"region_score": 204330,
"region_size": 204330,
"start_ts": "2021-03-24T05:16:01+08:00",
"last_heartbeat_ts": "2021-04-22T17:00:08.327760337+08:00",
"uptime": "707h44m7.327760337s"
}
},
{
"store": {
"id": 1,
"address": "172.16.12.190:20160",
"state": 1,
"version": "4.0.11",
"status_address": "172.16.12.190:20180",
"git_hash": "4ac5e7ea1839d63163e911e2e1164d663f49592b",
"start_timestamp": 1615779803,
"deploy_path": "/tidb-deploy/tikv-20160/bin",
"last_heartbeat": 1619080649051625434,
"state_name": "Offline"
},
"status": {
"capacity": "500GiB",
"available": "396.6GiB",
"used_size": "45.8GiB",
"leader_count": 6029,
"leader_weight": 1,
"leader_score": 6029,
"leader_size": 105444,
"region_count": 11731,
"region_weight": 1,
"region_score": 204330,
"region_size": 204330,
"start_ts": "2021-03-15T11:43:23+08:00",
"last_heartbeat_ts": "2021-04-22T16:37:29.051625434+08:00",
"uptime": "916h54m6.051625434s"
}
},
{
"store": {
"id": 4,
"address": "172.16.12.176:20160",
"state": 1,
"version": "4.0.11",
"status_address": "172.16.12.176:20180",
"git_hash": "4ac5e7ea1839d63163e911e2e1164d663f49592b",
"start_timestamp": 1618884887,
"deploy_path": "/tidb-deploy/tikv-20160/bin",
"last_heartbeat": 1618986301191030219,
"state_name": "Offline"
},
"status": {
"capacity": "500GiB",
"available": "443.5GiB",
"used_size": "49.29GiB",
"leader_count": 0,
"leader_weight": 1,
"leader_score": 0,
"leader_size": 0,
"region_count": 11731,
"region_weight": 1,
"region_score": 204330,
"region_size": 204330,
"start_ts": "2021-04-20T10:14:47+08:00",
"last_heartbeat_ts": "2021-04-21T14:25:01.191030219+08:00",
"uptime": "28h10m14.191030219s"
}
}
]
}
2021-04-22 17:11 region分布情况
region.log.xz region.log.xz (30.7 KB)
2021-04-22 17:15 存活节点172.16.12.138:20160 tikv.log
tikv.log.xz tikv.log.xz (5.9 MB)
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