Is percona DB free?

Percona Server for MySQL® is a free, fully compatible, enhanced and open source drop-in replacement for any MySQL database. It provides superior performance, scalability and instrumentation.

Where is percona installed?

Installing Percona Server for MySQL using downloaded deb packages

Files	Location
mysqld server	/usr/sbin
Configuration	/etc/mysql/my.cnf
Data directory	/var/lib/mysql
Logs	/var/log/mysql

How do I connect to Percona Server?

To connect to Percona create new documentation by clicking Add documentation and choosing Database connection.

1. On the connection screen choose Percona as DBMS.
2. Here is a comparison with connection details in MySQL Workbench.
3. Saving password.
4. Confirm list of objects to import by clicking Next.

How does PT table checksum work?

pt-table-checksum connects to the server you specify, and finds databases and tables that match the filters you specify (if any). It works one table at a time, so it does not accumulate large amounts of memory or do a lot of work before beginning to checksum. This makes it usable on very large servers.

Is MongoDB a memory?

MongoDB is not an in-memory database. Although it can be configured to run that way. But it makes liberal use of cache, meaning data records kept memory for fast retrieval, as opposed to on disk.

How do I remove percona?

To uninstall Percona Distribution for MySQL, stop the mysql service and remove all the installed packages using the package manager of your operating system….On Red Hat Enterprise Linux / CentOS

1. Stop the mysql service. $ sudo systemctl stop mysql.
2. Remove Percona Server for MySQL.
3. Remove the components.

Does percona work with MariaDB?

Compatibility with MariaDB In MariaDB 10.3 and later, Percona XtraBackup is not supported.

Is percona Postgres free?

Percona provides and supports 100% free and open source or source available enterprise-ready platforms. We enhance the community and ecosystem by making existing database software even better by: Delivering enterprise features in free, fully compatible software.

What is PT table?

DESCRIPTION. pt-table-usage reads queries from a log and analyzes how they use tables. The log should be in MySQL’s slow query log format. Table usage is more than simply an indication of which tables the query reads or writes. It also indicates data flow: data in and data out.

What is checksum in MySQL?

CHECKSUM TABLE reports a checksum for the contents of a table. You can use this statement to verify that the contents are the same before and after a backup, rollback, or other operation that is intended to put the data back to a known state. This statement requires the SELECT privilege for the table.

What is MongoDB Kubernetes operator?

The Kubernetes Operator manages the typical lifecycle events for a MongoDB cluster: provisioning storage and computing power, configuring network connections, setting up users, and changing these settings as needed. It accomplishes this using the Kubernetes API and tools.

How much RAM do I need for MongoDB?

MongoDB requires approximately 1 GB of RAM per 100.000 assets. If the system has to start swapping memory to disk, this will have a severely negative impact on performance and should be avoided.

How do you set up a percona cluster?

Quick Start Guide for Percona XtraDB Cluster

1. Install Percona XtraDB Cluster on all nodes and set up root access for them.
2. Configure all nodes with relevant settings required for write-set replication.
3. Bootstrap the first node to initialize the cluster.
4. Add other nodes to the cluster.
5. Verify replication.