tidb3.0.20 tidb-ansible导入到tiup后,查看有警告

[tidb@tidbser1 ~]$ tiup cluster show-config test-cluster
tiup is checking updates for component cluster ...
Starting component `cluster`: /home/tidb/.tiup/components/cluster/v1.9.4/tiup-cluster /home/tidb/.tiup/components/cluster/v1.9.4/tiup-cluster show-config test-cluster
global:
  user: tidb
  ssh_port: 22
  ssh_type: builtin
  deploy_dir: /u01/deploy
  data_dir: data
  os: linux
  arch: amd64
monitored:
  node_exporter_port: 9100
  blackbox_exporter_port: 9115
  deploy_dir: /u01/deploy
  data_dir: /u01/deploy/data
  log_dir: /u01/deploy/log
server_configs:
  tidb:
    alter-primary-key: false
    binlog:
      enable: true
      ignore-error: false
      write-timeout: 15s
    compatible-kill-query: false
    enable-streaming: false
    host: 0.0.0.0
    lease: 45s
    log:
      disable-timestamp: false
      expensive-threshold: 10000
      file:
        log-rotate: true
        max-backups: 0
        max-days: 0
        max-size: 300
      format: text
      level: info
      query-log-max-len: 2048
      slow-threshold: 300
    lower-case-table-names: 2
    max-index-length: 3072
    oom-action: log
    opentracing:
      enable: false
      reporter:
        buffer-flush-interval: 0
        local-agent-host-port: ""
        log-spans: false
        queue-size: 0
      rpc-metrics: false
      sampler:
        max-operations: 0
        param: 1.0
        sampling-refresh-interval: 0
        sampling-server-url: ""
        type: const
    performance:
      cross-join: true
      feedback-probability: 0.05
      force-priority: NO_PRIORITY
      max-procs: 0
      pseudo-estimate-ratio: 0.8
      query-feedback-limit: 1024
      run-auto-analyze: true
      stats-lease: 3s
      stmt-count-limit: 5000
      tcp-keep-alive: true
    pessimistic-txn:
      enable: true
      max-retry-count: 256
      ttl: 30s
    prepared-plan-cache:
      capacity: 100
      enabled: false
      memory-guard-ratio: 0.1
    proxy-protocol:
      header-timeout: 5
      networks: ""
    run-ddl: true
    security:
      cluster-ssl-ca: ""
      cluster-ssl-cert: ""
      cluster-ssl-key: ""
      ssl-ca: ""
      ssl-cert: ""
      ssl-key: ""
    server-version: ""
    socket: ""
    split-table: true
    status:
      report-status: true
    store: tikv
    tikv-client:
      commit-timeout: 41s
      grpc-connection-count: 16
      grpc-keepalive-time: 10
      grpc-keepalive-timeout: 3
    token-limit: 1000
    txn-local-latches:
      capacity: 2048000
      enabled: false
  tikv:
    raftstore:
      raftdb-path: ""
      sync-log: true
    rocksdb:
      wal-dir: ""
    security:
      ca-path: ""
      cert-path: ""
      key-path: ""
    server:
      labels:
        host: tikv1
  pd:
    enable-prevote: true
    initial-cluster-state: new
    lease: 3
    log:
      level: info
    namespace-classifier: table
    replication:
      location-labels:
      - zone
      - host
      max-replicas: 2
    schedule:
      leader-schedule-limit: 4
      max-pending-peer-count: 16
      max-snapshot-count: 3
      max-store-down-time: 30m
      merge-schedule-limit: 8
      region-schedule-limit: 4
      replica-schedule-limit: 8
      split-merge-interval: 1h
      tolerant-size-ratio: 5.0
    security:
      cacert-path: ""
      cert-path: ""
      key-path: ""
    tso-save-interval: 3s
  tiflash: {}
  tiflash-learner: {}
  pump:
    gc: 2
    heartbeat-interval: 2
    security:
      ssl-ca: ""
      ssl-cert: ""
      ssl-key: ""
  drainer:
    detect-interval: 10
    syncer:
      db-type: file
      disable-dispatch: false
      ignore-schemas: INFORMATION_SCHEMA,PERFORMANCE_SCHEMA,mysql
      ignore-txn-commit-ts: []
      safe-mode: false
      to:
        dir: /u01/deploy/drainer/binlog
      txn-batch: 20
      worker-count: 16
  cdc: {}
  grafana: {}
tidb_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 4000
  status_port: 10080
  deploy_dir: /u01/deploy
  log_dir: /u01/deploy/log
  arch: amd64
  os: linux
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 4001
  status_port: 10081
  deploy_dir: /u01/deploy2
  log_dir: /u01/deploy2/log
  arch: amd64
  os: linux
tikv_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 20161
  status_port: 20181
  deploy_dir: /u01/deploy2
  data_dir: /u01/deploy2/data
  log_dir: /u01/deploy2/log
  arch: amd64
  os: linux
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 20160
  status_port: 20180
  deploy_dir: /u01/deploy
  data_dir: /u01/deploy/data
  log_dir: /u01/deploy/log
  arch: amd64
  os: linux
tiflash_servers: []
pd_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  name: pd_tidbser1
  client_port: 2381
  peer_port: 2382
  deploy_dir: /u01/deploy2
  data_dir: /u01/deploy2/data.pd
  log_dir: /u01/deploy2/log
  arch: amd64
  os: linux
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  name: pd_PD1-1
  client_port: 2379
  peer_port: 2380
  deploy_dir: /u01/deploy
  data_dir: /u01/deploy/data.pd
  log_dir: /u01/deploy/log
  arch: amd64
  os: linux
pump_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 8250
  deploy_dir: /u01/deploy/pump
  data_dir: /u01/deploy/pump/data.pump
  log_dir: /u01/deploy/pump/log
  arch: amd64
  os: linux
drainer_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 8249
  deploy_dir: /u01/deploy/drainer
  data_dir: /u01/deploy/drainer/data.drainer
  log_dir: /u01/deploy/drainer/log
  config:
    initial-commit-ts: 0
  arch: amd64
  os: linux
monitoring_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 9090
  deploy_dir: /u01/deploy
  data_dir: /u01/deploy/prometheus2.0.0.data.metrics
  log_dir: /u01/deploy/log
  external_alertmanagers: []
  storage_retention: 30d
  arch: amd64
  os: linux
grafana_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  port: 3000
  deploy_dir: /u01/deploy
  arch: amd64
  os: linux
  username: admin
  password: admin
  anonymous_enable: false
  root_url: ""
  domain: ""
alertmanager_servers:
- host: 192.168.40.62
  ssh_port: 22
  imported: true
  web_port: 9093
  cluster_port: 9094
  deploy_dir: /u01/deploy
  data_dir: /u01/deploy/data.alertmanager
  log_dir: /u01/deploy/log
  arch: amd64
  os: linux

1.使用 tiup cluster import -d /home/tidb/tidb-ansible导入到tiup后,使用tiup命令查看报这个警告
2.目前tidb集群只部署在一台服务器上面
3.如何处理这个报错呢

看起来是缺副本规则的一些设定,不会影响集群状态
但是按照使用场景设定一下,会更好的满足副本调度的一个要求,可以参考下面的文档
https://docs.pingcap.com/zh/tidb/v3.0/schedule-replicas-by-topology-labels

tikv 最好采用 3 节点的基本配置,不然会出现不可用的问题
要满足 Raft 协议 奇数的要求…

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