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v2.4

Documentation:v2.4

Supported Versions:
Current(v2.4)

Release Notes

Installation package download address: https://www.mogdb.io/downloads/mogha/all

Tip: openEuler x86_64 is for glibc version 2.28，centos x86_64 is for glibc version 2.17 You can checkout version of glibc by command getconf GNU_LIBC_VERSION

mogha-2.4.22 (2024.08.19)

Change Log:

  • Fixed the standby not failover problem introduced in v2.4.21

mogha-2.4.21 (2024.06.07)

Change Log:

  • Add auto_build_standby and http_listen_address parameters

mogha-2.4.20 (2024.03.26)

Change Log:

  • Fix: Fixed an issue in which two standby both failover in Full mode

mogha-2.4.19 (2024.03.11)

Change Log:

  • Fix: Change build timeout from 10 minutes to 2 hours
  • Fix: Fix getting wrong user group id when multiple users have same prefix

mogha-2.4.18 (2024.01.31)

Change Log:

  • Fix：For more than 3 nodes, calculating wrong of the threshold of half votes when deciding on an instance role that was not started

mogha-2.4.17 (2024.01.09)

Change Log:

  • Fix：Concurrently read and write metadata, cause the problem of occasional read empty
  • Perf：Optimize the log level of some logs

mogha-2.4.16 (2023.12.15)

Change Log:

  • Fix：Solve the problem that after a switchover, the new master shutdown immediately, cause the metadata of the original master not refreshed
  • Fix：The critical state of the instance downtime during the live instance judgment cause the master not be restart
  • Perf：When the instance status is Coredump, failover immediately

mogha-2.4.15 (2023.11.30)

Change Log:

  • Fix：When the host of primary shutdown and backup failover, old primary dosent try to start after host restart.

mogha-2.4.14 (2023.11.23)

Change Log:

  • Optimize the primary_backup selection algorithm

mogha-2.4.13 (2023.10.18)

Change Log:

  • Fix: (lite mode) cannot decide real primary when there are multiple primaries

mogha-2.4.12 (2023.8.22)

Change Log:

  • Fix：support parse uppercase letters in parameter names (postgresql.conf)

mogha-2.4.11 (2023.7.12)

Change Log:

  • Each Zone supports two virtual IP addresses
  • Add replconn_ip field. Supports scenario where the db replication IP and bussiness IP are different

mogha-2.4.9(2023.4.28)

Change Log:

  • Optimize the implemention of the restart_strategy parameter.

mogha-2.4.8(2023.4.3)

Change Log:

  • Support extreme RTO mode (hot_standby=off)

mogha-2.4.7 (2023.3.24)

Change Log:

  • After the virtual IP is mounted, an error retry mechanism is added for the arping command.
  • Add orphan process cleaning script to improve MogHA's self high availability.

mogha-2.4.6 (2023.3.8)

Change Log:

  • When gs_ctl is unavailable, add the database pid check for db survival status
  • Fixed an issue where instance roles could not be decided when a single machine started

mogha-2.4.5 (2023.2.28)

Change Log:

  • Optimize the standby heartbeat workflow
  • Optimize commands of broadcasting VIP

mogha-2.4.4 (2023.1.31)

Change Log:

  • Optimize failover API. If instance is already primary, give a success response.
  • Optimize processing for instance in the Promoting state

mogha-2.4.3 (2022.12.14)

Change Log:

  • Fixed the dependency of dynamic libraries on SUSE 12
  • The arping command is executed by default using sudo (compatible with SUSE)
  • The time dimension in the restart_strategy parameter supports decimal numbers. For example, 10/0.5 represents 10 times /30s
  • Optimize the SQL for querying the standby list

mogha-2.4.2 (2022.12.02)

Change Log:

  • Fixed determine role of instance which not started

mogha-2.4.1 (2022.11.28)

Change Log:

  • Support to detect Starting/Building/Catchup state of db
  • Fixed repeatedly start db during db in Starting state

mogha-2.4.0 (2022.11.24)

Change Log:

  • Add vip_bind_nic, vip_netmask fields to Zone config in node.conf
  • Communication between HA nodes prefer to use ip, and fallback to use redundant ips heartbeat_ips when the request failed

mogha-2.3.8 (2022.11.2)

Change Log:

  • Fixed not failover when local zone has no sync standby in FULL mode

mogha-2.3.6 (2022.8.14)

Change Log:

  • Added HeartbeatError type, output the known error with log text instead of throwing exception

mogha-2.3.5 (2022.5.10)

Change Log:

  • Add virtual IP conflict detection during failover

mogha-2.3.4 (2022.4.24)

Change Log:

  • Optimize heartbeat requests, use persistent connections (keep-alive) to reduce socket usage and communication latency
  • Optimize heartbeat logic, shorten communication latency by concurrent requests
  • Optimizes the handling of log disk write failures to avoid process blocking
  • Change the ip priority of heartbeat, will use heartbeat ip first

mogha-2.3.2 (2022.3.15)

Change Log:

  • Fix: Failed to flush the route cache after switching
  • Feat: Use the immediate mode while stopping database.
  • Fix(full mode): The configuration of cluster replconninfo is incorrect after switching

MogHA-2.3.0 (2021.11.30)

Change Log:

  • Adjust the system architecture and remove Python dependency.
  • Support concurrent deployment of an HA service on each node.
  • Enable the maximum availability mode before failover under the lite mode.
  • Dynamically obtain the subnet mask of the service NIC as that of the virtual IP address.
  • Automatically try incremental rebuilding when the status of the standby database is "Need Repair".
  • Define the user-friendly process cmdline for easy distinction.
  • Update the mogha.service.tmpl template.
  • Optimize code and fix partial bugs.

MogHA-2.2.2 (2021.10.14)

Change Log:

  • Add the check of the maximum available space before the standby database is switched.
  • Add the check of the primary database role after the standby database is switched.
  • Optimize the switchover process.
  • Optimize the restart process of the standby database.

MogHA-2.2.1 (2021.9.10)

Change Log:

  • Add the limit of metadatabase connection timeout duration of 3s.
  • Add the limit of the HTTP interface request timeout duration of 3s.
  • Rectify the fault that allow_ips does not include a virtual IP address during HTTP interface authentication.
  • Optimize the code structure.

MogHA-2.2.0 (2021.9.7)

Change Log:

  • Modify the version management mode.
  • Pack objects by platform.
  • Modify the table structure of the metadatabase.
  • Remove the db_host_zone table.
  • Add the switchover time field to the db_cluster table.
  • Add the zone field to the db_instance table.
  • Change the ctime and utime fields to the create_time and update_time fields for all tables, respectively.
  • Support automatic discovery of database ports and writing into node.conf during installation.

MogHA-2.1.1 (2021.7.14)

Change Log:

  • Output a Chinese localization script.
  • Add a MogHA uninstallation script.
  • Add UCE fault detection.
  • Add disk fault detection.
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