leader都被kill了，query-status肯定用不了的啊，而且dm-worker-8263也被kill了，没起来之前肯定不存在的；这个是leader选举成功后的task状态：
Starting component
dmctl: /home/admin/.tiup/components/dmctl/v2.0.6/dmctl/dmctl --master-addr=172.16.150.185:8251 query-status dm-ddl_test
{
“result”: true,
“msg”: “”,
“sources”: [
{
“result”: false,
“msg”: “[code=38029:class=dm-master:scope=internal:level=high], Message: mysql-19980-1 relevant worker-client not found”,
“sourceStatus”: {
“source”: “mysql-19980-1”,
“worker”: “”,
“result”: null,
“relayStatus”: null
},
“subTaskStatus”: [
]
}
]
}