Clik here to view.
Dealing With MySQL Replication Issues Using ClusterControl
One of the most popular ways in achieving high availability for MySQL is replication. Replication has been around for many years, and became much more stable with the introduction of GTIDs. But even...
View ArticleClik here to view.
Advanced Failover Using Post/pre Script Hooks
The Importance of FailoverFailover is one of the most important database practices for database governance. It’s useful not only when managing large databases in production, but also if you want to be...
View ArticleClik here to view.
CMON High Availability and Failover
High availability is a must these days and ClusterControl performs a key role in ensuring that your database clusters will stay up and running. On the other hand, how can we ensure that ClusterControl...
View ArticleClik here to view.
PostgreSQL Replication Best Practices - Part 2
In the first part of this blog, we mentioned some important concepts related to a good PostgreSQL replication environment. Now, let’s see how to combine all these things together in an easy way using...
View ArticleClik here to view.
How to configure SELinux for MongoDB Replica Sets
By 2025, the world will store approximately 200 zettabytes of data. That data will be stored either in public, private, on-premises or cloud storage, PCs, laptops, smartphones and also...
View ArticleClik here to view.
How to Configure AppArmor for MongoDB Replica Sets?
There are many sections and layers of security if we are talking about the hardening of databases. It starts from the encryption of the underlying storage disk, database access privileges,...
View ArticleClik here to view.
Redis High Availability Architecture with Sentinel
Redis Sentinel is a dedicated process to automate and simplify the Redis replication failover and switchover. Without Sentinel, you could also manage your Redis replication manually, by using the...
View ArticleClik here to view.
How to configure SELinux for PostgreSQL and TimescaleDB
Data is the most important asset in a company, so you should take all the security considerations into account in your database to keep it as safe as possible. One important security feature on...
View ArticleTop Five Tips to Drive MariaDB Galera Cluster Performance for Nextcloud
Tuesday, June 15, 2021 - 10:00 to 11:00Nextcloud requires a database to store administrative data for the platform. A poorly performing database can have a serious impact on performance and...
View ArticleClik here to view.
How to configure AppArmor for MySQL-based systems (MySQL/MariaDB Replication...
Last week, we discussed how to configure AppArmor for MongoDB Replica Sets which basically has the same concepts applicable when configuring this for your MySQL-based systems. Indeed, security is very...
View ArticleClik here to view.
How to configure SELinux for MySQL-based systems (MySQL/MariaDB Replication +...
In the era that we are living in now, anything with a less secure environment is easily a target for an attack and becomes a bounty for the attackers. Compared to the past 20 years, hackers nowadays...
View ArticleAn Overview of Backup tools for Redis
Redis is a well-known in-memory datastore, quite commonly used for caching the data from a website or the database. You may think in such use cases backups of the data is not really relevant, but...
View ArticleClik here to view.
Using Sysbench to Generate Test Data for Sharded Table in MySQL
Sysbench is a great tool to generate test data and perform MySQL OLTP benchmarks. Commonly, one would do a prepare-run-cleanup cycle when performing benchmark using Sysbench. By default, the table...
View ArticleBacking Up Redis Clusters: A Guide
As we discussed in one of our previous blogs, backing up Redis is quite important to do, even if all we use Redis for is a cache for your application or the database. We have discussed some different...
View ArticleClik here to view.
How to configure AppArmor for PostgreSQL and TimescaleDB
Security is a must for all systems to protect your data as much as possible. Even when there is always a risk to be hacked, by following a security checklist will reduce this risk significantly. A...
View ArticleClik here to view.
Hash Slot vs. Consistent Hashing in Redis
About Hash Slots in Redis ClusterHash slot in Redis was introduced when the Redis Cluster was released in its version 3.0, more than 6 years ago. In fact, the Redis Cluster was taking too much time to...
View ArticleInstalling Redis Master-Slave with Manual Failover
The use of in memory databases as a new data structure layer for storing has increased recently. Many software architectures, especially high concurrent traffic, use an in memory database layer to...
View ArticleInstalling Redis Master-Slave with Sentinel for Auto Failover
In a previous blog, we already wrote on how to set up Redis Master-Slave replication with manual failover.The disadvantages of Redis Master-Slave architecture, as mentioned in a previous blog, refer to...
View ArticleInstalling Redis Cluster (cluster mode enabled) with auto failover
Redis is an open-source in-memory datastore used as a database or cache. It has built-in replication and provides high availability via Redis Sentinel and automatic partitioning with Redis Cluster. In...
View ArticleClik here to view.
Hash Slot Resharding and Rebalancing for Redis Cluster
Redis Cluster with automatic partitioning uses a cool approach in organizing and storing the data, where the keys are stored in a hash slot and the keyspace is split into 16384 slots. Each master node...
View Article