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Displaying posts with tag: MySQL Cluster (reset)
Testing MySQL NDB Cluster with dbdeployer

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A great way to install MySQL when you need to do quick tests is to use a sandbox tool. This allows you to perform all the installation steps with a single command making the whole process very simple, and it allows for automation of the test. Giuseppe Maxia (also known as the Data Charmer, @datacharmer on Twitter) has for many years maintained sandbox tools for MySQL, first with MySQL Sandbox and now with dbdeployer.

One of the most recent features of dbdeployer is the support for MySQL NDB Cluster. In this blog, I will take …

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Installing WordPress 5 on ZEIT Now with MySQL Hosting

Want to deploy WordPress 5.0 on the Now platform by ZEIT? Our friends over at ZEIT’s Now global serverless deployment platform whipped up a great tutorial for WordPress5-on-Now using cheap MySQL hosting instances from ScaleGrid. With such strong interest in this installation, we decided to write up the steps to configure your MySQL database on the ScaleGrid side to get you up and running ever faster with WordPress on Now.

Leave your comments: https://t.co/exuBzSHkHM
@now/wordpress summary:
◆ λ size = 13mb
◆ Just needs `wp-config.php`
◆ All static assets output directly to CDN …

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MySQL Cluster Manager 1.4.7 released!


MySQL Cluster Manager 1.4.7 is now available for download from My Oracle Support.

Overview
MCM 1.4.7 continues to improve MySQL Cluster Manager by adding some sought after features – and some important bugfixes.

The 1.4.7 release bundles MySQL Cluster 7.6.8.…

Reminder: MySQL User Group NL and Madrid MySQL User Group Meetups presenting Scaling MySQL this week (Monday/Thursday)

This is a quick reminder that this week there are 2 MySQL User Group Meetings (Amsterdam and Madrid) where we will be talking about Scaling MySQL. Guest speaker will be Morgan Tocker from PingCap who will talk about TiDB. More information: MySQL User Group NL  meetup taking place on Monday (presenting: Morgan, Daniël and Simon) … Continue reading Reminder: MySQL User Group NL and Madrid MySQL User Group Meetups presenting Scaling MySQL this week (Monday/Thursday)

2018-11-15: Announcing: Scaling MySQL with TiDB, Vitess and MySQL Cluster at Madrid MySQL Users Group

[ English ] – texto en español abajo We’re pleased to announce the next Madrid MySQL Users Group meetup which will take place on the 15th of November at 19:00.  Sign up details can be found here.  There’ll also be a similar meetup in Amsterdam on the 12th November hosted by a colleague. Details here. … Continue reading 2018-11-15: Announcing: Scaling MySQL with TiDB, Vitess and MySQL Cluster at Madrid MySQL Users Group

MySQL NDB Cluster: Never Install a Management Node on the Same Host as a Data Node

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In MySQL NDB Cluster, the management node (ndb_mgmd) is a lightweight process that among other things handles the configuration of the cluster. Since it is lightweight. It can be tempting to install it with one of the other nodes. However, if you want a high-availability setup, you should never install it on the same host as a data node (ndbd or ndbmtd). If you do that, it can cause a total cluster outage where the cluster could otherwise have survived.

The first sign of trouble occurs when you start the management nodes. The following warning is printed to standard output:

2018-08-22 18:04:14 [MgmtSrvr] WARNING  -- at line 46: Cluster configuration warning: …
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Monitoring NDBCluster Copying Alter Progress

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MySQL NDB Cluster has great support for online (inplace) schema changes, but it is still sometimes necessary to perform an offline (copying) ALTER TABLE. These are relatively expensive to make as the entire table is copied into a new table which eventually replace the old table.

One example where a copying ALTER TABLE is required is when upgrading from MySQL NDB Cluster 7.2 or earlier to MySQL NDB Cluster 7.3 or later. The format used for temporal columns changed between these version (corresponding to MySQL Server 5.5 to 5.6). In order to take advantage of the new temporal format, a table rebuild is required.

Note: Support for the old temporal format has been removed in MySQL 8.0. So, you must …

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Global Read-Scaling using Continuent Clustering

Did you know that Continuent Clustering supports having clusters at multiple sites world-wide with either active-active or active-passive replication meshing them together?

Not only that, but we support a flexible hybrid model that allows for a blended architecture using any combination of node types. So mix-and-match your highly available database layer on bare metal, Amazon Web Services (AWS), Azure, Google Cloud, VMware, etc.

In this article we will discuss using the Active/Passive model to scale reads worldwide.

The model is simple: select one site as the Primary where all writes will happen. The rest of the sites will pull events as quickly as possible over the WAN and make the data available to all local clients. This means your application gets the best of both worlds:

  • Simple deployment with no application changes needed. All writes …
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InnoDB Cluster in a Nutshell Part 3: MySQL Shell

Welcome to the third part of this series. I’m glad you’re still reading, as hopefully this means you find this subject interesting at least. Previously we presented the first two components of MySQL InnoDB Cluster: Group Replication and MySQL Router and now we will discuss the last component, MySQL Shell.

MySQL Shell

This is the last component in the cluster and I love it. Oracle have created this tool to centralize cluster management, providing a friendly, command-line based user interface.

The tool can be defined as an advanced MySQL shell, which is much more powerful than the well known MySQL client. With the capacity to work …

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Mastering Continuent Clustering Series: Global Clustering with Active/Active Meshed Replication

Did you know that Continuent Clustering supports having clusters at multiple sites world-wide with active-active replication meshing them together?

Not only that, but we support a flexible hybrid model that allows for a blended architecture using any combination of node types. So mix-and-match your highly available database layer on bare metal, Amazon Web Services (AWS), Azure, Google Cloud, VMware, etc.

The possibilities are endless, as is the business value. This strong topology allows you to have all the benefits of high availability with local reads and writes, while spreading that data globally to be accessible in all regions. Latency is limited only by the WAN link and the speed of the target node.

This aligns perfectly with the distributed Software-as-a-Service (SaaS) model where customers and data span the globe. Applications have access to ALL the …

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