Verify replication¶

Use the following procedure to verify replication by creating a new database on the second node, creating a table for that database on the third node, and adding some records to the table on the first node.

Create a new database on the second node:
```
mysql@pxc2> CREATE DATABASE percona;
```
The following output confirms that a new database has been created:
Expected output
```
Query OK, 1 row affected (0.01 sec)
```
Switch to a newly created database:
```
mysql@pxc3> USE percona;
```
The following output confirms that a database has been changed:
Expected output
```
Database changed
```

Create a table on the third node:

mysql@pxc3> CREATE TABLE example (node_id INT PRIMARY KEY, node_name VARCHAR(30));

The following output confirms that a table has been created:

Expected output

Query OK, 0 rows affected (0.05 sec)

Insert records on the first node:
```
mysql@pxc1> INSERT INTO percona.example VALUES (1, 'percona1');
```
The following output confirms that the records have been inserted:
Expected output
```
Query OK, 1 row affected (0.02 sec)
```

Retrieve rows from that table on the second node:

mysql@pxc2> SELECT * FROM percona.example;

The following output confirms that all the rows have been retrieved:

Expected output

+---------+-----------+
| node_id | node_name |
+---------+-----------+
|       1 | percona1  |
+---------+-----------+
1 row in set (0.00 sec)

Next steps¶

Consider installing ProxySQL on client nodes for efficient workload management across the cluster without any changes to the applications that generate queries. This is the recommended high-availability solution for Percona XtraDB Cluster. For more information, see Load balancing with ProxySQL.
Percona Monitoring and Management is the best choice for managing and monitoring Percona XtraDB Cluster performance. It provides visibility for the cluster and enables efficient troubleshooting.