postgresql multi master replication

Preparation environment:OS Version:centos Release 6.5 (Final)Server information:master1:192.168.1.29master2:192.168.1.37slave:192.168.1.861, modify MY.CNFSlave in the my.cnf add the following parametersEnable enhanced multi-threaded slave (multithreaded replication)Slave-parallel-type=logical_clockSlave-parallel-workers=8master_info_repository=TABL relay_log_info_repository= table relay_log_recovery=ONPar

MySQL master-slave replication principleMaster-Slave form MySQL master-slave replication flexibility One Master one from Primary master replication One

configuration cannot be lower than the master node; If you are sensitive to latency issues, consider using the MARIADB branch version, or go directly to the latest MySQL 5.7 version. The use of multi-threaded replication can greatly reduce replication latency, and another alternative for which is particula

Label:Pgpool Overview The Pgpool-ii is a middleware located between the PostgreSQL server and the PostgreSQL database client, which provides the following features: Connection pooling, replication, load balancing, limiting over-limit connections, and parallel queries. Document here. Four types of modes O means "available" and X means "not available(

Master-slave replication configuration for redisI. Principles Redis's master-slave replication function is very powerful. One master can have multiple slave instances, and one slave can have multiple slave instances. In this way, a powerful

default maximum number of connections for PG is MAX_CONNECTION=100, which is suspected to be an error in the number of database connections. The fact is that the old database max_connection=200, and does not use the default 100. Workaround: Modify the default maximum number of connections in the configuration file (postgresql.conf) max_connection=200, and restart the database. Copyright NOTICE: This article for Bo Master original article, without Bo

Tags: Linux OPS linux operations engineerThis paper mainly introduces the realization of MySQL master-slave copy function under the environment of single-database multi-instance.Basic Flow:1.MySQL Master-Slave Replication Introduction2. Master-Slave

single-Machine multi-instance Redis master-slave replication configuration Redis principal and subordinate copy principle look here. Master Redis's main configuration file is as follows: /etc/init.d/redis_6379 boot /etc/redis/redis_6379.conf configuration /var/lib/redis/data/ data storage directory /var/ Log/red

activate the same state as the Sing Woo Master, and a remote_apply level of replication is required. The above is PostgreSQL 9.6 enhancements in streaming replication. Synchronous multi-Copy configuration method The parameters are configured as follows Synchronous_stand

Master-Slave concept A master can have multiple slave, a slave? can have multiple slave, so go on, form a strong? Multi-level server cluster architecture Master used to write data, slave used to read data, statistics: the website read and write ratio is 10:1 Read/write separation via

Oracle 10g Advanced Replication instances (multi-agent replication)Objective:Configured three times, two is one way. The last time is finally two-way. Also a little bit of success in the joy. Joy? Joy does not. It's such a simple thing that I feel ashamed for so long. A lot of data on the network. But they seem to have a bit of a casual writing. Sometimes a littl

master-Slave form MySQL master-slave replication flexibility One Master one from Primary master replication One master multiple reads from the---extended system,

Mariadb10 Multi-source replication (Multi-sourcereplication) business use scenario analysis, and use method MariaDB Mariadb 10 Multi-source replication business application scenario analysis and usage An official mysql slave can only correspond to one

http://blog.itpub.net/28218939/viewspace-1975822/Concurrent Replication ( Parallel Replication ) Series II: Enhanced multi-threaded slavesMa Pengfei Technology MySQL database engineer First, we comb the basic principle of traditional mysql/mariadb replication:Master-slave replication is done through three threa

Concurrent Replication ( Parallel Replication ) Series II: Enhanced multi-threaded slavesMa Pengfei Technology MySQL database engineerFirst, we comb the basic principle of traditional mysql/mariadb replication:Master-slave replication is done through three threads, Binlog dump threads running on the

master-Slave formMySQL master-slave replication flexibility One Master one from Primary master replication One master multiple reads from the---extended system, because

====================================================================================Three, master and slave configuration1.postgresql Adding a replication userSu-postgres users under[Email protected] ~]$ PsqlPsql (9.2.10)Type ' help ' for help.postgres= #create role repl password ' 123456 ' login superuser replication;