simplivity replication

Tags: User name database server password MySQLWe may encounter this problem when we use the MySQL server database, and if one of the MySQL databases goes down, we want to fix it in the shortest possible time and use the database as quickly as we can, but what if we encounter some failures that cannot be quickly repaired?We can imagine that if this is another database that is identical to this database, the problem is not the same, how can be realized in real-time, and automatic backup or

Tags: test error:end systemctl ORM amp Command database outDocker container Master node: 172.17.0.9Docker Container Sub-node: 172.17.0.10Asynchronous replication: First confirm that the main library and from the library is consistent, preferably a clean database that has just been initialized if the main library is in use cannot initialize, it is necessary to first copy the contents of the main library to the library to do synchronization 1, first to

Tags: resource parameters feature shared file Server top image BSP IntroductionIn Sebastian Mui, 2012/12/26 the series This article isPart of the "Stairway series: SQL Server replicated ladder" SQL replication resolves many issues in running database-driven applications. The publishing/subscriber model is not entirely easy to understand, and the complexities of scripting and monitoring replication systems n

1.2 Different types of replicationNow that you have completely understood the limitations of physics and theory, you can start learning different types of replication.1.2.1 Synchronous and asynchronous replicationThe first distinction we can make is the difference between synchronous replication and asynchronous replication.What does that mean? Suppose we have two servers and want to replicate data from one

For example, distinguish between shallow replication and deep replication in Python This article mainly introduces how to distinguish between shallow replication and deep replication in Python. It is an important knowledge in getting started with Python. For more information, see The copy module is used to copy objects

I have recently encountered a wonderful question about publishing a subscription (Replication), and I hereby record this case. We have a large number of alarms on a SQL Server database server. The alarm information is as follows:description:replication-replication distribution Subsystem:agent xxxxxx failed. Column names in each table must is unique. Column name ' xxxxx ' in table ' dbo.xxxxxx ' was specifie

Label:5.3 Redundancy and stop replicationWhen it comes to synchronous replication, there is a phenomenon that must not be missed. Imagine that we have a two-node cluster with synchronous replication. What happens if a slave failure occurs? The answer is that master cannot easily divide the region into slow slave and fault slave, so it will start waiting for slave to come back.At first glance, this looks lik

from that of the shallow copy. The deep copy creates a new object andIn the original object, the corresponding field is the same (the content is the same), that is, this reference is different from the original object reference, we changeThis field in the object does not affect the content of the corresponding field in the original object. Shallow copy: to implement shallow copy, you must use the memberwiseclone method of the object class to create a superficial copy.Deep

(1) shallow copy (shallow clone)All the variables of the Copied object contain the same value as the original object, and allStill point to the original object. In other words, the shortest replication only copies the object to be considered, instead of copying the objectThe referenced object. (2) Deep replication (deep cloning)All variables of the Copied object contain the same value as the original obje

MySQL master-slave replication:Lab Environment:Linux CentOS7 two: 192.168.230.10 (master)----192.168.230.11 (from) (System installed, switch off the firewall or configure the firewall).MySQL 5.7 (Download the official Yum source, yum install-y MySQL mysql-server)To start the configuration:MySQL configuration files in general Linux are all in/ETC/MY.CNF (the configuration file in Windows is Mysql.ini)server-ID1 (guaranteed unique in the entire MySQL cluster) log-bin = binlog (binary) log-bin-ind

check bit, if the network transmission problems can be resumed, such as a breakpoint,Three. Master the Binlog file through a line called dump path to Slave, slave will receive an event written to a file called Relay log (relay log), and then according to relay log with a call applier something to commit ( Write datafile, and Binlog)The Binlog and relay log content is not always the same, because you can set the eventsize if there is a thing on master that writes to the Binlog so that the size e

Label:4.5 Make stream replication more robustWhen connecting to master, the first thing slave to do is catch up with master. But is this going to work all the time? We've seen that we can use a mix of stream-based and file-based settings. This gives us some extra security to prevent the flow from not working.In real-world scenarios, the two methods of transmitting xlog may be overly complex. In many cases, using a stream is sufficient. The crux of the

This article will share with you a good tutorial on configuring Linux MySQL master-slave Replication (Replication) (MySQL Data Synchronization). Thank you for your reference. MySQL is an open-source relational database system. Replication is a process that replicates data from a MySQL database server (master server) to another server (slave server slave. Configur

MyIsam is relatively simple to publish, just copy all the files in the library. The procedure of copying Innodb is similar to that of MyIsam, except that the table content in the Innodb Engine no longer exists in the same database directory (MyIsam does this). In the Innodb engine, data files are stored in files such as ibdata1, and operation logs are stored in files such as ib_logfile0, ib_logfile1, and ib_logfile2 by default.Innodb replication and p

Sybase Replication Server Application Plan VI Replication servers support the replication of data between Sybase and non-Sybase databases, such as the Sybase replication agent, to obtain update transactions on the DB2 database on the IBM host and replicate to ASE's replication