TIDB 运维之道

需要了解PD下的几个运维工具
pd-recover  #用法不详
pd-ctl
./pd-ctl -u http://172.16.0.50:2379
登陆后输入help查看支持的命令
help
Placement Driver control


Usage:
  [command]


Available Commands:
  cluster     show the cluster information
  config      tune pd configs
  exit        exit pdctl
  health      show all node's health information of the pd cluster
  hot         show the hotspot status of the cluster
  label       show the labels
  log         set log level
  member      show the pd member status
  operator    operator commands
  ping        show the total time spend ping the pd
  region      show the region status
  scheduler   scheduler commands
  store       show the store status
  table_ns    show the table namespace information
  tso         parse TSO to the system and logic time
  
  
 输入 help config ##可获得参数的使用方法
 tune pd configs


Usage:
  config [command]


Available Commands:
  delete      delete the config option
  set         set the option with value
  show        show schedule config of PD
  
 ##
 store #查看集群状态，等同于在IE输入地址查看
 http://172.16.0.50:2379/pd/api/v1/stores
 » store 52  ##查看单个TIKV服务状态
{
  "store": {
    "id": 52,
    "address": "172.16.0.50:20160",
    "state_name": "Up"
  },
  "status": {
    "capacity": "12 KiB",
    "leader_weight": 1,
    "leader_score": 1,
    "region_weight": 1,
    "region_score": 1,
    "start_ts": "2018-03-31T10:25:25+08:00",
    "last_heartbeat_ts": "2018-03-31T10:42:18.09835485+08:00",
    "uptime": "16m53.09835485s"
  }
}


当集群出现duplicated store address时候，解决办法
store delete 1 #删除冲突编号，重新启动tikv即可
» store lable
store_id should be a number 
» store weight 
Usage: store weight
config 
» config show ##显示PD负载设置
{
  "max-snapshot-count": 3,
  "max-pending-peer-count": 16,
  "max-store-down-time": "1h0m0s",
  "leader-schedule-limit": 64,
  "region-schedule-limit": 12,
  "replica-schedule-limit": 16,
  "tolerant-size-ratio": 2.5,
  "schedulers-v2": [
    {
      "type": "balance-region",
      "args": null
    },
    {
      "type": "balance-leader",
      "args": null
    },
    {
      "type": "hot-region",
      "args": null
    },
    {
      "type": "label",
      "args": null
    }
  ]
}
config set leader-schedule-interval 20s
member ##PD成员信息状态
member delete name pd名字
» member leader show ##显示主节点
member resign pd名字 #注册新PD
» member leader_priority tidb149 1


其他命令可以通过:命令 +help  查看用法


查看添加索引的任务
admin show ddl
admin show ddl jobs #查看当前DDL作业队列中所有的结果

show stats_healthy#查看表是否做优化

其他客户端工具操作类似！！！