## Module 3: Check The Status Of The Deployed TiDB Cluster ### Step 1. Check TiDB cluster status by using TiUP + On the TiUP Control Machine, check the clusters managed by TiUP. ```bash tiup cluster list ``` ```output Name User Version Path PrivateKey ---- ---- ------- ---- ---------- tidb-demo ec2-user v${LAB:TIDB_VERSION} /home/ec2-user/.tiup/storage/cluster/clusters/tidb-demo /home/ec2-user/.tiup/storage/cluster/clusters/tidb-demo/ssh/id_rsa ``` + Check the status of the deployed TiDB cluster, all components are not running yet. ```bash tiup cluster display tidb-demo ``` ```output Cluster type: tidb Cluster name: tidb-demo Cluster version: v${LAB:TIDB_VERSION} Deploy user: ec2-user SSH type: builtin Grafana URL: http://10.90.4.138:3000 ID Role Host Ports OS/Arch Status Data Dir Deploy Dir -- ---- ---- ----- ------- ------ -------- ---------- 10.90.4.138:9093 alertmanager 10.90.4.138 9093/9094 linux/x86_64 Down /tidb-data/alertmanager-9093 /tidb-deploy/alertmanager-9093 10.90.4.138:3000 grafana 10.90.4.138 3000 linux/x86_64 Down - /tidb-deploy/grafana-3000 10.90.2.138:2379 pd 10.90.2.138 2379/2380 linux/x86_64 Down /tidb-data/pd-2379 /tidb-deploy/pd-2379 10.90.2.231:2379 pd 10.90.2.231 2379/2380 linux/x86_64 Down /tidb-data/pd-2379 /tidb-deploy/pd-2379 10.90.2.90:2379 pd 10.90.2.90 2379/2380 linux/x86_64 Down /tidb-data/pd-2379 /tidb-deploy/pd-2379 10.90.4.138:9090 prometheus 10.90.4.138 9090/12020 linux/x86_64 Down /tidb-data/prometheus-9090 /tidb-deploy/prometheus-9090 10.90.1.169:4000 tidb 10.90.1.169 4000/10080 linux/x86_64 Down - /tidb-deploy/tidb-4000 10.90.1.56:4000 tidb 10.90.1.56 4000/10080 linux/x86_64 Down - /tidb-deploy/tidb-4000 10.90.4.126:9000 tiflash 10.90.4.126 9000/8123/3930/20170/20292/8234 linux/x86_64 N/A /tidb-data/tiflash-9000 /tidb-deploy/tiflash-9000 10.90.2.158:20160 tikv 10.90.2.158 20160/20180 linux/x86_64 N/A /tidb-data/tikv-20160 /tidb-deploy/tikv-20160 10.90.2.242:20160 tikv 10.90.2.242 20160/20180 linux/x86_64 N/A /tidb-data/tikv-20160 /tidb-deploy/tikv-20160 10.90.2.95:20160 tikv 10.90.2.95 20160/20180 linux/x86_64 N/A /tidb-data/tikv-20160 /tidb-deploy/tikv-20160 Total nodes: 12 ``` ### Step 2. Start the TiDB cluster + Start the TiDB cluster with standard startup mode (database root user with empty password). In this step, we do NOT use the `--init` option to generate a random password for the database root user. ```bash tiup cluster start tidb-demo ``` ```output ... Started cluster `tidb-demo` successfully ``` + Check the status of the started TiDB cluster. The URLs for TiDB Dashboard and Grafana are also displayed. Proceed to the next step. ```bash tiup cluster display tidb-demo ``` ```output Cluster type: tidb Cluster name: tidb-demo Cluster version: v${LAB:TIDB_VERSION} Deploy user: ec2-user SSH type: builtin Dashboard URL: http://34.222.39.121:2379/dashboard Grafana URL: http://10.90.4.138:3000 ID Role Host Ports OS/Arch Status Data Dir Deploy Dir -- ---- ---- ----- ------- ------ -------- ---------- 10.90.4.138:9093 alertmanager 10.90.4.138 9093/9094 linux/x86_64 Up /tidb-data/alertmanager-9093 /tidb-deploy/alertmanager-9093 10.90.4.138:3000 grafana 10.90.4.138 3000 linux/x86_64 Up - /tidb-deploy/grafana-3000 10.90.2.138:2379 pd 10.90.2.138 2379/2380 linux/x86_64 Up|L /tidb-data/pd-2379 /tidb-deploy/pd-2379 10.90.2.231:2379 pd 10.90.2.231 2379/2380 linux/x86_64 Up /tidb-data/pd-2379 /tidb-deploy/pd-2379 10.90.2.90:2379 pd 10.90.2.90 2379/2380 linux/x86_64 Up /tidb-data/pd-2379 /tidb-deploy/pd-2379 10.90.4.138:9090 prometheus 10.90.4.138 9090/12020 linux/x86_64 Up /tidb-data/prometheus-9090 /tidb-deploy/prometheus-9090 10.90.1.169:4000 tidb 10.90.1.169 4000/10080 linux/x86_64 Up - /tidb-deploy/tidb-4000 10.90.1.56:4000 tidb 10.90.1.56 4000/10080 linux/x86_64 Up - /tidb-deploy/tidb-4000 10.90.4.126:9000 tiflash 10.90.4.126 9000/8123/3930/20170/20292/8234 linux/x86_64 Up /tidb-data/tiflash-9000 /tidb-deploy/tiflash-9000 10.90.2.158:20160 tikv 10.90.2.158 20160/20180 linux/x86_64 Up /tidb-data/tikv-20160 /tidb-deploy/tikv-20160 10.90.2.242:20160 tikv 10.90.2.242 20160/20180 linux/x86_64 Up /tidb-data/tikv-20160 /tidb-deploy/tikv-20160 10.90.2.95:20160 tikv 10.90.2.95 20160/20180 linux/x86_64 Up /tidb-data/tikv-20160 /tidb-deploy/tikv-20160 Total nodes: 12 ``` ### Step 3. Check cluster status with TiDB Dashboard and Grafana Dashboard + Use your browser to log into the [TiDB PD Dashboard](http://${LAB:HOST_PD1_PUBLIC_IP}:2379/dashboard), the username and password is the same as that of the TiDB `root` user. The password is empty if you followed the lab guide by choosing the standard startup. The home page displays the node information for the TiDB cluster. + You can also check the cluster status with the [Grafana Prometheus Dashboard](http://${LAB:HOST_MONITOR1_PUBLIC_IP}:3000). The default username and password for Grafana are both `admin`. ![40](https://lab-static.pingcap.com/quick-demo/Grafana_aa_001_20220615.png)