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MySQL users management using ProxySQL Tools

Recently, we have implemented a set of new commands in ProxySQL Tools to manage MySQL users. You can create, delete, and modify users from command line. There are commands:

You can set a user’s password can be set at time of creation with —-password option or later on with  set_password sub-command. Create user Let’s add MySQL […]

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Setup high availability for ProxySQL via KeepAlived in AWS

Usually application do not connect directly to Percona XtraDB Cluster, but go through a proxy – ProxySQL, for instance. However if only one proxy node is used it becomes a single point of failure. Not long ago Marco Tusa wrote about how to configure two ProxySQL nodes in front of XtraDB cluster. If deployed on EC2 instances it […]

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Show differences found by pt-table-checksum

TwinDB Table Compare

pt-table-checksum perfectly solves problem of checking if master and its slaves are in-sync. It answers the question “Are the slaves consistent with the master?”. However if the answer is “No” pt-table-checksum doesn’t actually tell what exactly is different.

pt-table-sync may give a partial answer. It can print SQL statements to sync the replication cluster. Reading the SQL […]

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