influxdb replication

the data from the node to ensure data consistency. If one of the nodes fails, the other nodes will immediately connect to the business without downtime. Features and benefits of MongoDB replication set Features of the replica set: n Nodes of a cluster Any node can be used as the master node All write operations are on the primary node Auto Fail-Over Automatic recovery

later.Confirm the password again.At this point, the master-slave server MySQL installation completedThird, build MySQL master-slave replicationHere is the principle of master-slave replication, is based on the MySQL log files, the main server's MySQL operation log files sent to the slave server, let the server execute log files, to achieve the purpose of master-slave replication.1, configure the primary se

MySQL5.6 master-slave copy (read and write separation) tutorial1. There are two ways to start a master-slave copy of MySQL5.6:Log based (binlog);Based on the Gtid (global transaction identifier).Note: The Gtid method does not support temporary tables! So if your business system is going to use a temporary table, don't think about it.At least the current version of MySQL5.6.12 's Gtid replication is still not supported for temporary tables.So the main

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

1. Replication overview1.1, Replication solution of the problem data replication technology has the following features: (1) data distribution (2) load balancing (load Balancing) (3) Backup (4) High availability (Hi availability) and fault tolerance1.2. How replication works from a high level,

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

Deep replication in Javascript and javascript Replication In javascript, the value assignment between all object variables is carried to the address. You may want to know which object objects are assigned. It may be better to give an example: Copy codeThe Code is as follows:Typeof (true) // "boolean"Typeof (1) // "number"Typeof ("1") // "string"Typeof ({}) // "object"Typeof ([]) // "object"Typeof (null) //

Installation and master-slave replication of mysql5.7.18, and master-slave replication of mysql5.7.18Install mysql5.7.18 on CentOS6.7 　　 1. decompress the package to the/usr/local directory. # Tar-zxvf mysql-5.7.18-linux-glibc2.5-i686.tar.gz-C/usr/local 2. Rename the mysql-5.7.18-linux-glibc2.5-i686 folder to mysql # Cd/usr/local # Music mysql-5.7.18-linux-glibc2.5-i686/mysql 3. Create a mysql user group an

1. Parameter meaning Dfs. replication: set the number of copies of the data block to be copied; Dfs. replication. min: Minimum number of copies of the specified data block; Dfs. safemode. threshold. pct: Specify the proportion of data blocks to meet the minimum number of replicas. (1) If the ratio is less than this, the system will switch to the security mode to copy data blocks; (2) When this ratio is exce

Tags: start vim global method permissions Gtid_mode allow log serverAB replication: The master server builds a synchronization environment by modifying the MySQL configuration file, enabling the server to synchronize the primary server's database.Note: Both the master and slave servers need to shut down the firewall.Primary server:Modify MySQL configuration file to generate log permanently#vim/etc/my.cnfLog-bin= ' Masterlog 'Server-id=1To create an ac

1. Master-slave replication1.1 PrincipleThe Main Library opens the Binlog function and authorizes the main library to connect from the library, obtains the relevant synchronization information from the library through change master, and then connects the main library for verification, and the main library IO thread is based on the request from the library slave thread. Starting from the location of the record Master.info start to fetch information, at the same time, the location point and the la