Monitoring Your MySQL Database Using mysqladmin
As with any other dynamic running process, the MySQL database also needs sustained management and administration of which monitoring is an important part. Database monitoring allows you to find out mis-configurations, under or over resource allocation, inefficient schema design, security issues, poor performance that include slowness, connection aborts, process hanging, partial resultsets etc. It is giving you an opportunity to fine tune your platform server, database server, its configuration and other performance factors. This article provides you an insight into monitoring your MySQL database through tracking and analyzing important database metrics, variables and logs using mysqladmin.
Securing MySQL NDB Cluster
As discussed in a previous article about MySQL NDB Cluster, it is a database cluster setup based on the shared-nothing clustering and database sharding architecture. It is built on the NDB or NDBCLUSTER storage engine for MySQL DBMS. Also the 2nd article about MySQL NDB Cluster Installation outlined installation of the cluster through setting up its nodes – SQL node, data nodes and management node. This article discusses how to secure your MySQL NDB Cluster through the below perspectives:
1. Network security 2. Privilege system 3. Standard security procedures for the NDB cluster.Detailed information is available at MySQL Development Documentation about NDB Cluster Security
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Why Your Business Need Database Versioning?
How database versioning boosts your business growth?
Applications are neither ideal nor perfect. Along with the dynamic implementation environments and rapid technology changes, certain features can become obsolete and some new ones might be needed. Workflows and processes in the application need to be changed. Bugs and vulnerabilities can be reported any time. Competitors may release a new feature that demands you to reciprocate with matching or better feature. The chances are huge for you to initiate, perform and deliver a stable minor or major version. A delay or absence in this can negatively affect the reputation and/or monetary attributes like market performance, profit etc. In these circumstances, it is essential for you to make available for your teams, tools that automates and simplifies processes as much as possible. Applications or services have code and databases are integral parts of any product. A properly version controlled database boosts and simplifies development and production deployment processes. It also helps in critical analysis, comparison and cross review of your application sets. The results give you new insights and directions for a new promising version release and you can focus on your business growth, since everything is automated.
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How to Secure your MariaDB Database Server
At the time of writing this article, the current MariaDB 10.2 offers MariaDB TX Subscription to access the feature MariaDB MaxScale. MariaDB TX subscription offers high-end functionality like implementing business-critical production, test and QA deployments, management, monitoring and recovery tools, mission-critical patching and above all, access to the MariaDB Database Proxy, MaxScale.
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How to install MySQL NDB Cluster on Linux
As discussed in this previous article about MySQL NDB Cluster overview, it is built on the NDBCLUSTER storage engine for MySQL and provides high availability and scalability. This article explains installation of MySQL NDB Cluster on Linux environment. The detailed documentation is available at the official MySQL Developer Documentation page.
Symptoms of a bad IT Architecture
How significant is the IT Architecture for your business
Every organization, SMBs to Enterprises, relies upon their IT architecture for running the business, its workflows, planning, processes, policies, principles, operations, services, projects and to fulfill their obligation towards value proposition. It is not merely the data storage and management system, as existed till the late 80’s but incorporates the complete domain of business management as of now. Right from the aim, planning, policies and principles, the IT architecture starts to play a significant and profound role in the organization’s existence, operations and development.
An Overview of MySQL NDB Cluster
The “Shared Nothing” Architecture and Database Sharding
It is a distributed computing architecture with interconnected, but independent computing nodes with their own memory and disk storage that are not shared. Compared to a centralized controller based distributed architecture, the SN architecture eliminates presence of a “single point of failure”. An SN architecture offers great scalability by adding as many nodes as wanted. The data is distributed or partitioned among the different nodes that run on separate machines. To respond to user’s queries, some kind of coordination protocol is being used. This is also called database sharding, where the data is horizontally partitioned. A database shard that contains a partition will be holding on a separate database server instance to spread load and to eliminate failures. In horizontal partitioning, table rows are separated, rather than as columns in vertical partitioning or normalization. Each data set will be part of the shard that is distributed across different database servers and also at different physical locations, if needed.
MariaDB Backup and Restore with mysqldump
In MariaDB both logical and physical backups are possible. Logical backups are made up of SQL statements that actually performed CREATE, SELECT, UPDATE, INSERT, etc. operations on the database and Physical backups are copying the data and index files that store the table information including structure and data. While logical backups are highly portable, physical backups are less portable and compatible between not only different hardware, OS, etc. but also between different storage engines of the same DBMS. This is due to the difference in file structure used by different intra-database storage engines and between different OS, hardware, drivers etc.
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Basic MariaDB Database Administration
MariaDB is an open source RDBMS released under GPL License. Currently there are millions of MariaDB installations across the world. MariaDB’s popularity is due to its speed, security and scalability and capability to handle massive data sets. This article discusses about basic to intermediate MariaDB Administration tasks. More details are available at the MariaDB official knowledgebase.
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Galera Cluster for MySQL and MariaDB
Galera Cluster for MySQL is a MySQL multi-master cluster setup that uses the Galera Replication Plugin. The replication is synchronous so that any changes happened at any one master node is immediately replicated to other master nodes as broadcasted transaction commits. This synchronization provides high-availability, high up-time and scalability. All master nodes in the cluster are available both READS/WRITES. The Galera Replication Plugin provides automatic node control to implement dropping of failed nodes from the cluster and rejoining recovered nodes back to the cluster. This prevents data loss and clients can connect to any node, as decided by the Replication Load Balancer. Since changes are synchronized between all nodes, unlike conventional replication, there is no slave lag, lost transactions and client latencies are kept at a minimum level.