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Changelog.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

Added

Changed

Removed

Fixed

  • rclone extra arguments are now properly passed to the backup job.

[0.4.0] - TBD

Added

  • Added a ServiceMonitor to the operator chart that scrapes all MySQL instances.
  • Added a test suite for RunCloneCommand logic, along with a mock backup server.
  • Added checks for service availability when cloning.
  • Added "fail fast" logic when unexpected errors occur during cloning/download.
  • Added dataDir cleanup code so that interrupted cloning does not leave dataDir in an inconsistent state.
  • Added e2e test demonstrating cloning failure when PVC is removed and pod recreated.
  • Add MetricsExporterExtraArgs field on MySQLCluster resource that allows to specify command line arguments to pass to MySQL metrics exporter.
  • Allow using custom secret for app credentials in mysql-cluster chart.
  • Add XbstreamExtraArgs field on MySQLCluster resource that allows to specify extra command line arguments to xbstream.
  • Add XtrabackupExtraArgs, XtrabackupPrepareExtraArgs, XtrabackupTargetDir to parametrize xtrabackup.
  • Add RcloneExtraArgs to parametrize rclone command.
  • Add InitFileExtraSQL to insert custom init SQL queries that will be run at MySQL initialization.
  • Add Volumes and VolumesMounts in .Spec.PodSpec to allow the user specifying custom volume mounts.
  • Add InitContainers and Containers in .Spec.PodSpec to allow the user specifying custom containers.
  • Add MetricsExporterResources and MySQLOperatorSidecarResrouces in .Spec.PodSpec to allow the user specifying resources for thos sidecars containers.
  • Add command line flag to configure number of workers for orchestrator controller.

Changed

  • #422 adds the SidecarServerPort to the MasterService and introduces one new service, HealthyReplicasService, so that we can try to clone from replicas first, then fall back to master.
  • Changed the connect timeout from the default of 30s to 5s so that an empty k8s service will not cause cloning attempts to hang unnecessarily for 30s.
  • Update documentation structure and formatting.
  • Udate Orchestrator version to v3.1.4
  • Update orchestrator base image to alpine:3.11.
  • Update FailoverInProgress condition to false when both Replicas and ReadyNodes are 0.
  • Fall back to current master, not pod 0, when no healthy replicas found for backup candidate.
  • Change the mysql-operator chart to be helm v3 compatible while keeping backward compatibility.
  • Change logging: change cluster logging field to key; normalize logging and more details; output Stackdrive compatible format.
  • Decrease MASTER_CONNECT_RETRY interval from 10 to 1 second.
  • Deprecate TmpfsSize because can be handled using ExtraVolumes and ExtraMySQLVolumesMounts.
  • Update cron documentation
  • Set InnoDB buffer parameter: innodb_buffer_pool_instances to min(resources.limit.cpu, floor(innodb_buffer_pool_size/1G)) (see #502)
  • Change default resource requests/limits for sidecar container: requested=10m/32Mi, limit=the same as .spec.podSpec.resources.limit
  • Change default resource requests/limits for exporter container: requested=10m/32Mi, limit=100m/128Mi
  • Change default resource requests/limits for heartbeat container: requested=10m/32Mi, limit=100m/64Mi
  • If extra_port is defined in the cluster spec, metrics exporter will use it to connect to MySQL providing that extra_max_connections is larger than the default 1. If MySQL server runs out of available connections, using extra_port allows the exporter to continue collecting MySQL metrics.
  • Change the default number of workers for orchestrator controller from 1 to 10.

Removed

Fixed

  • Update and fix e2e tests
  • Fix double date string in backup path
  • Fix double date string in bakup path
  • Copy the nodeSelector as-is in the statefulset (fixes #454)
  • Fix flakines in ReadOnly cluster condition (fixes #434)
  • Fix rounding in computing innodb-buffer-pool-size (fixes #501)

0.3.8 - 2020-01-22

Fixed

  • Fixed TmpfsSize type in CRD

0.3.7 - 2020-01-22

Added

  • Add support for mounting a tmpfs into /tmp. Add TmpfsSize field on the cluster

0.3.6 - 2020-01-08

Added

  • Update mysql-cluster chart to support setting backupScheduleJobsHistoryLimit

Changed

  • Increase size of value column in sys.operator table (see #447) (fixes #446)
  • Determine master logic: prevent to follow infinit loops

Fixed

  • Use custom server offset (MyServerIDOffset) when deciding to clone from bucket

0.3.5 - 2019-11-28

Changed

  • Update Orchestrator version to v3.1.2
  • Update Go lang to 1.13.4

Fixed

  • Don't require backupSecretName if not set. Fixes delete on remove when using workload identity

0.3.4 - 2019-11-04

Added

  • Update mysql-cluster chart to support custom server id offset

Changed

  • During failover don't interfere with readdable/wriatable master (fixes #411)
  • Imorove logging

0.3.3 - 2019-10-03

Added

  • Allow server id offset to be set via MySQLCluster resource by adding MyServerIDOffset field

Changed

  • Make app credentials optional for mysql-cluster chart
  • Don't create user with empty password (fixes #385)

Fixed

  • Fix wrong enviroment for mysql container
  • Fix pt-kill client configure file prefix

0.3.2 - 2019-07-26

Changed

  • Update docs structure on presslabs.com/docs/mysql-operator/
  • Set limit on mysql mysql-init-only container the same as on the mysql container (fixes #371)
  • Don't limit memory on sidecars containers

0.3.1 - 2019-07-17

Fixed

  • Upgrade path from version v0.2.x (#369)
  • Changes the default leader election id from controller-leader-election-helper to mysql-operator-leader-election (#368)

0.3.0 - 2019-07-08

Added

  • add a new cluster condition FailoverInProgress that marks the cluster during a failover
  • set orchestrator related events on the cluster: OrcFailureDetection, OrcPostUnsuccessfulFailover, OrcPostMasterFailover, OrcPostIntermediateMasterFailover
  • new command line flag --mysql-versions-to-image to allow user to specify image for a mysql version
  • add print column in mysqlcluster CRD: Ready, Replicas, Age
  • allow specifying more PodSpec on MySQL cluster (9b6b46f)
  • add a node controller for MySQL configuration (1950812)
  • add "standard" labels on services created by the operator (#299)

Changed

  • merge Orchestrator chart with the mysql-operator chart. Now instead of deployment it uses a statefulset
  • nodes are removed from cluster status at scale down
  • use init container for MySQL initialization (#342)
  • enhance Backup Job Pod for Workload Identity (#366)
  • refactor of how the information flow works: from k8s -> Operator -> Orchestrator; the sidecar container does not connect to Orchestrator anymore.
  • rename of initBackupURI to initBackupURL (a3c6556)
  • use of Percona CentOS based images (#254)
  • don't run as root user in containers (#291)
  • rename orchestrator finalizer (to block cluster deletion while it's registered into Orchestrator) from OrchestratorFinalizer to mysql.presslabs.org/registered-in-orchestrator (bfe4646)
  • improvement of getBackupCandidate function (9ce4e68)
  • configure MySQL using init-file (beb41ce, e5823cb)
  • rename AWS_SECRET_KEY field from bucket/backup secret to AWS_SECRET_ACCESS_KEY (#301)
  • use an internal status table to store the MySQL status (181909f)
  • use a common headless service for all MySQL nodes to reduce the host-name length (#246)

Removed

  • cleanup of deprecated fields: bucketURI and top-level MySQLCluster.spec.volumeSpec PVC specification (d909ab9, df80b28)

Fixed

  • fix readiness probe for MySQL container
  • fix remote storage delete bug
  • fix mysqlbackup deletion failure when cluster is not found
  • fix #350 where no backups were created when one fails
  • fix #107, the orchestrator RAFT issue