v3.0.5

• Add the monitoring metrics of adding index speed #986
  Simplify the configuration file content and remove parameters that users do not need to configure #1043c, #998
• Fix the monitoring expression error of performance read and performance write #e90e7
• Update the monitoring display method and the alarm rules of Raftstore CPU usage #992
• Update the TiKV CPU monitoring item in the Overview monitoring dashboard to filter out the excess monitoring content #1001

v3.0.4

• Upgrade TiSpark to v2.2.0 #926
• Update the default value of the TiDB configuration item pessimistic_txn to true #933
• Add more system-level monitoring metrics to node_exporter #938
• Add two perf tools of iosnoop and funcslower to better diagnose the cluster state #946
• Replace the raw module to shell module to address the long waiting time in such situations as the password expires #949
• Update the default value of the TiDB configuration item txn_local_latches to false
• Optimize the monitoring metrics and alert rules of Grafana dashboard #962, #963, #969
• Check the configuration file before the deployment and upgrade #934, #972

v2.1.17

• Update the Spark version to 2.4.3, and update the TiSpark version to 2.2.0 that is compatible with Spark 2.4.3 #914, #919
• Fix the issue that there is a long waiting time when the remote machine password has expired #937, #948

v3.0.3

• Optimize PD operations for rolling update to improve stability #894
• Remove the Grafana Collector components that are not supported by the current Grafana version #892
• Update TiKV alerting rules #898
• Fix the issue that the generated TiKV configuration misses the pessimistic-txn parameter #911
• Update Spark to V2.4.3, and update TiSpark to V2.1.4 that is compatible with Spark V2.4.3 #913 #918

v2.1.16

• Add the log4j configuration file in Spark #842
• Update the tispark jar package to v2.1.2 #863
• Fix the issue that the Prometheus configuration file is generated in the wrong format when TiDB Binlog uses Kafka or ZooKeeper #845
• Fix the bug that PD fails to switch the Leader when executing the rolling_update.yml operation #888
• Optimize the logic of rolling updating PD nodes - upgrade Followers first and then the Leader - to improve stability (#895)

v3.0.2

• Fix the unit error that the Disk Performance monitor treats seconds as milliseconds #840
• Add the log4j configuration file in Spark #841
• Fix the issue that the Prometheus configuration file is generated in the wrong format when Binlog is enabled and Kafka or ZooKeeper is configured #844
• Fix the issue that the pessimistic-txn configuration parameter is left out in the generated TiDB configuration file #850
• Add and optimize metrics on the TiDB Dashboard #853
• Add descriptions for each monitoring item on the TiDB Dashboard #854
• Add the TiDB Summary Dashboard to better view the cluster status and troubleshoot issues #855
• Update the Allocator Stats monitoring item on the TiKV Dashboard #857
• Fix the unit error in the Node Exporter’s alerting expression #860
• Upgrade the TiSpark jar package to v2.1.2 #862
• Update the descriptions of the Ansible Task feature #867
• Update the expression of the local reader requests monitoring item on the TiDB Dashboard #874
• Update the expression of the TiKV Memory monitoring item on the Overview Dashboard, and fix the issue of wrongly displayed monitoring #879
• Remove the Binlog support in the Kafka mode #878
• Fix the issue that PD fails to transfer the Leader when executing the rolling_update.yml operation #887

v2.1.15

• Add the parse duration and compile duration monitoring items in TiDB Dashboard to monitor the time that it takes to parse SQL statements and execute compilation #815

v3.0.1

• Add the precheck feature for the ansible command and its jmespath and jinja2 dependency packages #803, #813
• Add the stop-write-at-available-space parameter (10 GiB by default) in Pump to stop writing binlog files in Pump when the available disk space is less than the parameter value #806
• Update the I/O monitoring items in the TiKV monitoring information and make them compatible with the monitoring components of the new version #820
• Update the PD monitoring information, and fix the anomaly that Disk Latency is empty in the disk performance dashboard #817
• Add monitoring items for Titan in the TiKV details dashboard #824

v2.1.14

• Add the precheck feature for the ansible command and its jmespath and jinja2 dependency packages #807
• Add the stop-write-at-available-space parameter (10 GiB by default) in Pump, and stop writing binlog files in Pump when the available disk space is less than the parameter value #807

v3.0.0

• Upgrade the following monitoring components to a stable version:
  • Prometheus from V2.2.1 to V2.8.1
  • Pushgateway from V0.4.0 to V0.7.0
  • Node_exporter from V0.15.2 to V0.17.0
  • Alertmanager from V0.14.0 to V0.17.0
  • Grafana from V4.6.3 to V6.1.6
  • Ansible from V2.5.14 to V2.7.11
• Add the TiKV summary monitoring dashboard to view cluster status conveniently
• Add the TiKV trouble_shooting monitoring dashboard to remove duplicate items and facilitate troubleshooting
• Add the TiKV details monitoring dashboard to facilitate debugging and troubleshooting
• Add concurrent check for version consistency during rolling updates to improve the update performance
• Support deployment and operations for TiDB Lightning
• Optimize the table-regions.py script to support displaying Leader distribution by tables
• Optimize TiDB monitoring and add latency related monitoring items by SQL categories
• Modify the operating system version limit to only support the CentOS 7.0+ and Red Hat 7.0+ operating systems
• Add the monitoring item to predict the maximum QPS of the cluster (hidden by default)