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Tungsten Clustering

Tungsten Clustering 6.1.12

Build: 53
Release Date: 8 Mar 2021
End of Life Date: 15 Aug 2024
Product End of Life

This release is past End of Life.

Release 6.1.12 is a minor bug fix release.

Improvements, new features and functionality (4)

Command-line Tools (1)

  • A new --no-routers cli option has been added to the cctrl command.

    Using cctrl --no-routers will suppress the collection and display of connectors when issuing the ls command. This is especially useful when there are a lot of connectors installed and gathering the information from them could take a lot of time, causing unexpected timeouts.

    Issue: CT-1437

Connector (1)

  • A new affinity feature has been added in this release that will allow you to define a dedicated datasource for writes within a Composite Active/Active deployment.

    This feature can be particularly useful to direct all writes for a specific user/application to a dedicated Write endpoint, where you need to remove any chance of writes in multiple clusters conflicting.

    This feature can be enabled in a number of ways :- Via edits to the user.map file for Proxy configurations, via calls during connection, or via the connector-affinity tpm option if using Bridge mode.

    Issues: CT-1369, CT-1457

Manager (1)

  • Minor improvements to rule handling in the managers.
    Issue: CT-1464

Monitoring (1)

  • Support has now been added to allow monitoring via the New Relic Insights API, using a new script tungsten_newrelic_event
    Issue: CT-892

Bug Fixes (8)

Command-line Tools (6)

  • If using tungsten_provision_slave to restore a previously failed Primary node, the provision could fail to recover the node.
    Issue: CT-1468
  • Fixed an issue where, in Composite Active/Active environments, tpm would ignore the affinity passed with the tpm flagconnector-affinity.
    Issue: CT-1465
  • When provisioning from a Primary node, in a Composite Active/Active environment, using tungsten_provision_slave, the replicator would fail to reset due to the incorrect service name being used.
    Issue: CT-1458
  • Replaced md5 hashing to sha256 within tpm to fix issues where tpm install would fail on FIPS enabled environments.
    Issue: CT-1451
  • In a Composite Active/Active environment, the tungsten_post_process command now intelligently handles cross-site filter properties in the INI so that any defined filters are appended to the default values for any option that resolves to property replicator.stage.q-to-dbms.filters
    Issues: CT-1372, CT-1449
  • If using mysqldump as your preferred choice of backup method, Stored Procedures and Functions would not be included in the generated dump file when using tungsten_provision_slave.
    Issue: CT-1339

Core Replicator (2)

  • If SSL is enabled between replicators for THL Transfer, and a source node fails and becomes unresponsive, or is slow/overloaded, the replicator on the replica can fail to go offline due to a timeout, remaining in a GOING-ONLINE:SYNCHRONIZING state.

    In a clustering environment, this can prevent failovers occurring due to the manager waiting for the replicator which is stuck in a timeout loop.

    Issue: CT-1459

  • A new mapcharset filter is included, which fixes collation incompatibilities when replicating from MySQL 8 to an older release (5.7 or 5.6)

    This new filter should be enabled within any MySQL applier where the source is generated from a MySQL 8 database and the target is MySQL 5.7 or lower.

    Issue: CT-1404