Version End of Life. Not Yet Set
Release 8.0.1 contains a number of bug fixes and improvements.
The following changes have been made to Tungsten 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 validate now verifies localhost is defined in
/etc/hostsIssues: CT-2564
tpm now only reads
/etc/tungsten/tungsten.ini(no longer looking in$HOMEdirectory and/etc/tungsten.ini)For a different path, different filename or multiple files, use the
--inisupplying a comma-separated listIssues: CT-2612
Improvements, new features and functionality
New Feature: tpm ini upgrade --ini {fullpath} will display all changes to the specified INI file that would be
performed by the tpm update commands during a version upgrade. Adding the --write argument
would apply the changes to the specified file as well.
Issues: CT-2601
New tpm flag --add-ssl now allows to force generate certificates when doing an upgrade. This allows
configurations with security disabled to be upgraded to 8.0.1 AND switched to using SSL/TLS communications at the same time. Example:
shell> tools/tpm update --replace-release --add-sslIssues: CT-2619
Additional prometheus metrics have been added to the Replicator:
tungsten_replicator_service_online_duration_seconds gauge
show duration in seconds since the replicator was put online.
tungsten_replicator_task_total counter shows statistics by
service, stage and task as shown in the following example:
tungsten_replicator_task_total{service="alpha",stage="q-to-dbms",task_id="1",stat="extract_time",} 250.015In this case, this is the extract time spent by the task #1 of the q-to-dbms stage of the alpha service. This is similar to the new trepctl perf output.
Issues: CT-2514
Corrected debug outputs in the Perl tpm framework.
Issues: CT-2497
The tapi command now handles various payload outputs properly.
Issues: CT-2553
The tpm purge-thl command now works properly when run against environments where there are multiple THL files, but the lowest seqno returned exists in the very first THL file.
Issues: CT-2561
The tapi command no longer issues an error when the quantity of command-line arguments is larger than expected.
Issues: CT-2580
The tungsten_send_diag now uses AWS Signature Version 4 to upload files.
Issues: CT-2589
The tpm ini check command now handles a variety of edge cases.
Issues: CT-2613
The tpm cert gen command now works during version upgrades when a security configuration
file may not have existed before (passwords.store).
Issues: CT-2618
Fixed an issue with backups that would fail on hosts whose name contains a '-' (hyphen)
Issues: CT-2600
Fixed an edge case issue with xtrabackup running against the primary node and MySQL 8+.
Generally we do not recommend taking backups from primary nodes, and instead backups should be taken from replicas.
Issues: CT-2602
Fixed an issue where timestamp columns would not match between source and target when using the
privileged-slave=false property to replicate from a source
database using MIXED binlog mode.
Issues: CT-2594
With recent SELinux changes, MySQL might be unable to read from /tmp.
This directory is used when applying a LOAD DATA INFILE command that was logged using
Statement Based Replication (warning : this is considered as unsafe by MySQL).
In order to avoid any issues, a new setting has been added to indicate a directory to use : svc-applier-ldi-temp-dir=/tmp/mysqltmp
In this case, mysqltmp is a new subdirectory that should be set with the following permissions and SELinux context
mkdir -p /tmp/mysqltmp sudo chown -R mysql: /tmp/mysqltmp sudo chmod -R g+r /tmp/mysqltmp sudo semanage fcontext -a -t mysqld_db_t '/tmp/mysqltmp(/.*)?' sudo restorecon -Rv /tmp/mysqltmp
Another improvement was also added to force the use of LOCAL when applying a LOAD DATA INFILE
command that was logged using SBR. This is useful when applying to a remote MySQL host. To enable, set the value
of the svc-applier-ldi-use-local=true (default : false)
Issues: CT-2603