Tidb common commands

One tiup command

1、tiup Capacity expansion

1、 stay scale-out.yaml File add capacity expansion topology configuration ：

vi scale-out.yaml

tidb_servers:
  - host: 192.168.192.38
    ssh_port: 22
    port: 4000
    status_port: 10080
    deploy_dir: /data/deploy/install/deploy/tidb-4000
    log_dir: /data/deploy/install/log/tidb-4000

TiKV Profile reference ：

tikv_servers:
  - host: 10.0.1.5
    ssh_port: 22
    port: 20160
    status_port: 20180
    deploy_dir: /data/deploy/install/deploy/tikv-20160
    data_dir: /data/deploy/install/data/tikv-20160
    log_dir: /data/deploy/install/log/tikv-20160

PD Profile reference ：

pd_servers:
  - host: 10.0.1.5
    ssh_port: 22
    name: pd-1
    client_port: 2379
    peer_port: 2380
    deploy_dir: /data/deploy/install/deploy/pd-2379
    data_dir: /data/deploy/install/data/pd-2379
    log_dir: /data/deploy/install/log/pd-2379

Tiflash

tiflash_servers:
  - host: 10.0.1.4

TiCDC node

cdc_servers:
  - host: 10.0.1.3
    gc-ttl: 86400
    data_dir: /data/deploy/install/data/cdc-8300
  - host: 10.0.1.4
    gc-ttl: 86400
    data_dir: /data/deploy/install/data/cdc-8300

have access to tiup cluster edit-config View the configuration information of the current cluster , Because of global and server_configs Parameter configuration will be configured by default scale-out.yaml Inherit , So it will scale-out.yaml Enter into force .

2、 Execute capacity expansion command

tiup cluster scale-out <cluster-name> scale-out.yaml

Be careful ：
It is assumed that the current user executing the command has established mutual trust with the newly added machine , If the conditions for opening up mutual trust are not met , Need to pass through -p To enter the password for the new machine , Or through -i Specify private key file .

Expected output Scaled cluster out successfully Information , Indicates that the expansion operation is successful .

3、 Check cluster status

tiup cluster display <cluster-name>

Open the browser to access the monitoring platform http://10.0.1.5:3000, Monitor the status of the entire cluster and new nodes .

Two Manual start

./node_exporter --web.listen-address=":9100" --log.level=“info” &