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Displaying posts with tag: Continuent Tungsten (reset)
Tungsten Clustering 6.0.5 and Tungsten Replicator 6.0.5 Released

Continuent is pleased to announce that Tungsten Clustering 6.0.5 and Tungsten Replicator 6.0.5 are now available!

Our v6.0.5 release fixes a number of bugs and introduces some new features, with improvements across the board in a variety of different components.

Some of the key improvements include:

  • A new Clustering utility script has been added to the release, tungsten_reset_manager, which assists with the graceful reset of the manager’s dynamic state files on disk.
  • Fixed an issue where the tpm command would allocate inconsistent THL listener ports for the Composite Multimaster (CMM) topology.
  • MySQL ping commands are now reconnected/retried upon “server gone away” error (Proxy mode ONLY).
  • mysql_checker_query script was returning …
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Geo-Scale MySQL in AWS Webinar

Learn how to build a global, multi-region MySQL cloud back-end capable of serving hundreds of millions of online multiplayer game accounts. Find out how Riot Games serves a globally distributed audience with low-latency, fast response times for read traffic, rapid-failover automated high availability, simple administration, system visibility, and stability.

 

Watch the Geo-Scale MySQL in AWS Webinar.

Watch the AWS Re:Invent Talk, here

Read the Riot Games blog post, here

Tungsten Clustering 5.3.6 and Tungsten Replicator 5.3.6 Released

Continuent is pleased to announce that Tungsten Clustering 5.3.6 and Tungsten Replicator 5.3.6 are now available!

Our 5.3.6 release fixes a number of bugs and has been released to improve stability.

Highlights common to both products:

  • Now, instead of searching for a master with appropriate role (i.e. matching the slave preferred role) until timeout is reached, the replicator will loop twice before accepting connection to any host no matter what its role is. (CT-712)
  • Changing the state machine so that RESTORING is not a substate of OFFLINE:NORMAL, but instead of OFFLINE so that a transition from OFFLINE:NORMAL:RESTORING to ONLINE is not possible any longer. Now it will not be possible to transition from
    OFFLINE:RESTORING to ONLINE (CT-797)
  • When an heartbeat is inserted, it will now use the JVM timezone instead of hardcoded UTC. (CT-803)
  • Now skipping files that are not …
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Tungsten Clustering 6.0.4 and Tungsten Replicator 6.0.4 Released

Continuent is pleased to announce that Tungsten Clustering 6.0.4 and Tungsten Replicator 6.0.4 are now available!

Our v6.0.4 release fixes a number of bugs and introduces some new features, with improvements across the board in a variety of different components.

Some of the key improvements include:

  • When installing from an RPM, the installation would automatically restart the Connector during the installation. This behavior can now be controlled by setting the parameter --no-connectors within the configuration to prevent tpm from restarting the Connectors during the automated update processing.
  • Cross-site Replicators within a composite multimaster deployment can now be configured to point to slaves by default, and to prefer slaves over masters during operation using the new --policy-relay-from-slave=true option
  • You can now enable an option so …
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Continuent Clustering 5.3.3/5.3.4 and Tungsten Replicator 5.3.3/5.3.4 Released

Continuent is pleased to announce that Continuent Clustering 5.3.4 and Tungsten Replicator 5.3.4 are now available!

Release 5.3.4 was released shortly after 5.3.3 due to a specific bug in our reporting tool tpm diag. All of the major changes except this one fix are in the 5.3.3 release.

Our 5.3.3/4 release fixes a number of bugs and has been released to improve stability in certain parts of the products.

Highlights common to both products:

  • Fixed an issue with LOAD DATA INFILE
  • Replicator now outputs the filename of the file when using thl to show events
  • tpm diag has been improved the way we extract MySQL and support Net:SSH options

Highlights in the clustering product:

  • Tungsten Manager stability has been improved by identifying some memory leaks.
  • Tungsten Connector has fixed a number of bugs relating to bridge mode, …
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Multi-Cloud SaaS Applications: Speed + Availability = Success!

In this blog post, we talk about how to run applications across multiple clouds (i.e. AWS, Google Cloud, Microsoft Azure) using Continuent Clustering. You want your business-critical applications to withstand node, datacenter, availability-zone or regional failures. For SaaS apps, you also want to bring data close to your application users for faster response times and a better user experience. With cross-cloud capability, Continuent also helps avoid lock-in to any particular cloud provider.

The key to success for the database layer is to be available and respond rapidly.

From both a business and operational perspective, spreading the application across cloud environments from different vendors provides significant protection against vendor-specific outages and vendor lock-in. Running on multiple platforms provides greater …

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Mastering Continuent Clustering Series: Converting a standalone cluster to a Composite Primary/DR topology using INI configuration

In this blog post, we demonstrate how to convert a single standalone cluster into a Composite Primary/DR topology running in two data centers.

Our example starting cluster has 5 nodes (1 master and 4 slaves) and uses service name alpha. Our target cluster will have 6 nodes (3 per cluster) in 2 member clusters alpha_east and alpha_west in composite service alpha.

This means that we will reuse the existing service name alpha as the name of the new composite service, and create two new service names, one for each cluster (alpha_east and alpha_west).

Below is an INI file extract example for our starting standalone cluster with 5 nodes:

[defaults]
...

[alpha]
connectors=db1,db2,db3,db4,db5
master=db1
members=db1,db2,db3,db4,db5
topology=clustered

To convert the above configuration to a Composite Primary/DR:

  1. First you must stop all services on all existing nodes:
    shell> stopall …
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Missed our Continuent Clustering 6.0 webinar and training? Don’t sweat it. Watch them on-demand.

Missed our Continuent Clustering 6.0 webinar and technical deep dive? Don’t sweat it. Watch these recordings of our presentations and find out what’s new and latest for multisite, multimaster clustering, what’s changed, improvements that we’ve made under the hood, and how this will improve the quality and support for your multimaster MySQL/Percona/MariaDB deployments.

In our technical deep dive, we take a detailed look at the new deployment model, how the different components work together, and how you can now manage and support your new multimaster environment using Continuent Clustering 6.0. We cover the new integration of the replication, how that affects your deployment, and how that alters …

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Recommended fix for MySQL Checker Query Script for Tungsten Clustering

We have identified an issue in a script that is executed as part of the Tungsten Clustering solution. The script itself executes a small query against the internal tables used by the replicator in order to help identify the current status and latency of the replication process. We believe this script may occasionally fail under some very specific conditions, which would not normally be an issue, but the knock on effect is to create Out of Memory errors and instability in the way identifying the current replication state is handled.

The issue has been fixed in the upcoming 6.0.1 and 5.3.2 releases, but we have identified that customers on versions of the Tungsten Clustering solution from v4.0 upwards would benefit from using an updated version of the script.

If you are using Tungsten Clustering 4.x or higher, it is recommended that you apply this patch to improve the stability of your clustering …

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Tungsten Clustering 5.3.1 and Tungsten Replicator 5.3.1 are now available!

Continuent are pleased to announce that the new 5.3.1 release is now available for all our customers.

This is a key bug fix and feature release, the key component of which is the final piece of the support for extracting data types from MySQL 5.7 with the Geometry data type.

Key improvements within Tungsten Clustering:

  • Full Support for MySQL data types with the addition of Geometry datatype
  • Fixed an issue where large memory dumps could be collected during a failure
  • Fixed some issues to ensure compatibility with upcoming products

Key improvements within Tungsten Replicator:

  • Full Support for MySQL data types with the addition of Geometry datatype

It’s important to note that due to the addition of support for the geometry datatype, THL written with Geometry data will no longer be readable by …

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