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2.1. Tungsten Replicator 6.1.3 GA (17 February 2020)

Version End of Life. Not Yet Set

Release 6.1.3 contains a small number of improvements and fixes to common command line tools, and introduces compatibility with MongoDB Atlas.

Behavior Changes

The following changes have been made to Continuent Replicator and may affect existing scripts and integration tools. Any scripts or environment which make use of these tools should check and update for the new configuration:

  • tpm diag (in [Tungsten Replicator 6.1 Manual]) has been updated to provide additional feedback detailing the hosts that were gathered during the execution, and also provides examples of how to handle failures

    When running on a single host configured via the ini method:

    shell> tpm diag
    Collecting localhost diagnostics.
    Note: to gather for all hosts please use the "-a" switch and ensure that you have paswordless »
    ssh access set between the hosts.
    Collecting diag information on db1.....
    Diagnostic information written to /home/tungsten/tungsten-diag-2020-02-06-19-34-25.zip

    When running on a staging host, or with the -a flag:

    shell> tpm diag [-a|--allhosts]
    Collecting full cluster diagnostics
    Note: if ssh access to any of the cluster hosts is denied, use "--local" or "--hosts=<host1,host2,...>"
    Collecting diag information on db1.....
    Collecting diag information on db2.....
    Collecting diag information on db3.....
    Diagnostic information written to /home/tungsten/tungsten-diag-2020-02-06-19-34-25.zip

    Issues: CT-1137

Bug Fixes

  • Command-line Tools

    • tpm would fail to run on some Operating Systems due to missing realpath

      tpm (in [Tungsten Replicator 6.1 Manual]) has been changed to use readlink which is commonly installed by default on most operating systems, however if it is not available, you may be required to install GNU coreutils to satisfy this dependency

      Issues: CT-1124

    • Removed dependency on perl module Time::HiRes from tpm

      Issues: CT-1126

    • Added support for handling missing dependency (Data::Dumper) within various tpm subcommands

      Issues: CT-1130

    • tpm (in [Tungsten Replicator 6.1 Manual]) will now work on MacOS/X systems, provided greadlink is installed.

      Issues: CT-1147

    • tpm install (in [Tungsten Replicator 6.1 Manual]) will no longer report that the linux distribution cannot be determined on SUSE platforms.

      Issues: CT-1148

    • Fixes a condition where tpm diag (in [Tungsten Replicator 6.1 Manual]) would fail to set the working path correctly, especially on Debian 8 hosts.

      Issues: CT-1150

    • tpm diag (in [Tungsten Replicator 6.1 Manual]) now checks for OS commands in additional paths (/bin, /sbin, /usr/bin and /usr/sbin)

      Issues: CT-1160

    • Fixes an issue introduced in v6.1.2 where the use of the undeployall (in [Tungsten Replicator 6.1 Manual]) script would stop services as it removed them from systemctl control

      Issues: CT-1166

  • Core Replicator

    • The MongoDB Applier has been updated to use the latest MongoDB JDBC Driver

      Issues: CT-1134

    • The MongoDB Applier now supports MongoDB Atlas as a target

      Issues: CT-1142

    • The replicator would fail with Unknown column '' in 'where clause when replicating between MySQL 8 hosts where the client application would write data into the source database host using a different collation to that of the default on the target database.

      The replicator would fail due to a mismatch in these collations when querying the information_schema.columns view to gather metadata ahead of applying to the target

      Issues: CT-1145