postgresql multi master replication

spreading master updates. MySQL does not support multi-master Replication-that is, one slave can have multiple masters. However, through some simple combinations, we can build a flexible and powerful replication architecture. 4.1 single

Mysql master-slave replication principle, mysql master-slave PrincipleMaster-slave mode Flexible mysql master-slave Replication One master, one slave Master-

makes it very easy to track and compare replication things and to recover quickly from crashes. In particular, the INNODB engine must be implemented with the help of gtid in order to achieve high-availability functionality.Second, the application scenarioGtid is especially important when using mariadb for high availability, for example, in a high-availability environment, in a master

I am using multi-instance mysql, so the startup is like this. if you are using a single instance, you can directly start it [/etc/init. d/mysqld start] [root @ client102 scripts] # mysqld_multi start 3306 # log on to the mysql server [root @ client102 scripts] # mysql-uroot-S/usr/local/mysql/mysqld3306.sock- p # grant the user permission to synchronize mysql> grant replication slave on *. * to 'kongzhong '

, PostgreSQL will invoke a script to do what you want to do. When a database declares itself as a master library, you can easily use this setting to clean up older xlog.Toggle Xlog FileIf you want to do a recovery based on the Xlog file, you have seen that each xlog will be archived to 16MB. What happens if you don't try to create a 16MB change? If you are a small supermarket, this will only produce 50 trad

I. The master-slave replication process of mysql requires at least two mysql service nodes. The master-slave replication framework of mysql is generally a master-slave multi-slave mode, which is summarized from multiple data cente

assume that there is a central server that contains many university students learning information. Each university should have a copy of the data. As a PostgreSQL9.4, it is not possible to use a DB instance because stream replication has the ability to replicate only one database fully. Running many instances is obviously a lot of work, perhaps not the desired set of methods.The idea behind Walbouncer is to connect to the

PG replication, high availability, load balancing related clusters, here is a summary for your reference.PG has the following various replication-based clustering schemes, most of which were not collated at the time. Now there are many of these cluster configuration documents on the Internet, after this document to find the complete point of the centralized backup, do not need to look around every time.Base

Label:What is the latency between the PostgreSQL database stream replication master and standby and should be evaluated for both HA and load balancing. A simple HA architecture, for example, is how much time we allow for data loss in the event of a failure of the main library. No nonsense, go directly into this experiment test. Test environment:Main Library: Memo

Tags: set nbsp host thread Sam Max master-slave copy Io_thread LinPreviously done a multi-instance MySQL on a single machine, this time separate to do, using two hosts.The host addresses used here are:master:192.168.214.135slave:192.168.214.128The two hosts already have MySQL installed, but two database data are differentMaster-slave replication roughly stepBasic

one line of code and run it; Pg_basebackup will do all the rest for you.In this example, we will assume that we are going to make a basic backup of a host called postgresql-support.de. You must perform the following steps:• Modify pg_hba.conf to allow replication• Signal Master to consider changes in pg_hba.conf• Call Pg_basebackupModify Pg_hba.confIn order to a

Tags: PostgreSQL asynchronous stream replication standby auto-activation Node Ip Role Citus-master 10.10.100.1 Master Citus-standby 10.10.100.2 Standby The user that is required to create the stream

Tags: PostgreSQL synchronous stream replication Node Ip Role Master 10.10.100.1 Master Standby1 10.10.100.2 Standby1 Standby2 10.10.100.3 Standby2 The user that is required to create the stream

-bin.000010286052813 (4) Relay-log.infoContains information about the current binary and trunk logs in slave. 3.4. Send replication events to other slaveWhen setting log_slave_updates, you can let slave play the Master of other slave. At this point, slave writes the events executed by the SQL thread to its own binary log (binary logs), and then its slave can get the events and execute it. As f

by GTID, because GTID identifies the source server and the number of transactions (Source_id: transaction_id ), each change is related to GTID and recorded in the binlog log for synchronization by other slave databases, so as to achieve a globally unique identifier. Note: GTID does not change in multi-level replication. In GTID, if the master server has multiple

Tags: Latest sel lost native default BSP Pass installation effectFirst, IntroductionPostgreSQL introduces a master-slave stream replication mechanism after 9.0, so-called stream replication is the synchronization of the corresponding data from the server through the TCP stream from the primary server. This will still be backed up from the server when the primary

solely on the show slave status provided by MySQL itself. Pt-heartbeat is a good choice for master-slave replication latency monitoring. This article describes the latency monitoring in the case of master-slave replication and provides corresponding examples. Pt-heartbeat is one of the percona-toolkit. Therefore, you

The next generation asynchronous multiple primary database replication System Bucardo 5 was released. This version removes the limit of two database sources in the old version, allowing for more source databases (that is, the primary database) and more target databases (that is, backing up the database). Bucardo can also be replicated to other types of target databases, including MySQL, mariadb, Oracle, SQLite, MongoDB, and Redis. Bucardo has been com

slave play the Master of other slave. At this point, slave writes the events executed by the SQL thread to its own binary log (binary logs), and then its slave can get the events and execute it. As follows: 3.5. Copy filter (Replication Filters)Replication filtering allows you to replicate only a subset of the data in the server, with two

use cascade replication, you need at least PostgreSQL9.2. ]Shows the basic schema:The slaves on the far side of the picture can act as a transfer node here. With this very simple approach, you can basically create a wireless-scale system. The process of setting up is basically the same as setting up a single slave. You can easily make basic backups from a running slave (postgresql.conf and pg_hba.conf must be configured just like a single