influxdb replication

Tags: style blog http io ar using SP for strongWhen creating the Influxdb database, we can see the following options, each of which means what this article describes: Influxdb the storage of internal data can use different storage engines. The current 0.8.7 version supports LEVELDB, ROCKSDB, Hyperleveldb, and LMDB. These databases are all KV type databases with the following information: LevelDB is a very

MySQL replication is divided into master-slave replication and master-master replication. What is master-slave Replication refers to a master server with one or more servers as the slave servers. The slave server does not write any data. The data source is the master server. The purpose of

Here will tell you INFLUXDB read and write performance test, tutorial steps: Today, the Influxdb and MySQL comparison test, where the results are recorded, but also convenient for me to check later. Operating system: CENTOS6.5_X64INFLUXDB version: V1.1.0mysql version: V5.1.73cpu:intel (R) Core (TM) i5-2320 CPU @ 3.00GHz Memory: 12G hard drive: SSD one, MySQL read and write Test test Preparation Initializ

location = ‘santa_monica‘ AND time >= ‘2015-08-18T00:00:00Z‘ and time 结果： name: h2o_feet -------------- time moving_average 2015-08-18T00:12:00Z 2.0460000000000003 2015-08-18T00:24:00Z 2.0345000000000004 2015-08-18T00:36:00Z 2.0540000000000003 解释：这些结果,InfluxDB首先选择MIN()water_level每12分钟间隔: name: h2o_feet -------------- time min 2015-08-18T00:00:00Z 2.064 2015-08-18T00:12:00Z 2.028 2015-08-18T00:24:00Z 2.041 2015-08-1

There are three types of InfluxDB users: Cluster Admin Cluster admin Database Admin DB Admin Database user Cluster adminHave the following permissions: Adding and deleting databases Add and delete database Admin and DB user users for any databases or give them read and write permissions. The Cluster Administrator does not have permission to query the data. Default it has a username of root, password is also

Tags: return storage guide Sort select CentOS init ase IDEnvironment: centos6.5_x64Influxdb version: 1.1.0 Data compression can be referenced by: https://docs.influxdata.com/influxdb/v1.1/concepts/storage_engine/#compression Influxdb different compression algorithms are used depending on the data type. Int First use the zigzag algorithm to encode, if the encoded value is less than (1 If i

Telegraf is a collection of monitoring agents, there are support to collect a variety of data plug-ins such as Ceph,apache,docker,haproxy,system, but also support a variety of output plug-ins such as Influxdb,graphite and so on.Influxdb is a time series database and is used for monitoring scenariosGrafana is a great drawing tool.The combination of the three has three main processes: Nbsp;1. The Telegraf installed on all nodes of the Ceph cluster (inc

MySQL replication is primarily replicated from the primary master. What is master-slave replication Master-slave replication means that there is a single device to do as the primary server, one or more servers as from the server. No data is written from the server, and the source of the data is the primary server. The purpose of the

v0.9.5 version, which modifies the self-LSMPre-write logClosed after the current log file reaches 2MB size, and start writing new log filesWhen the data is written, the log file is dropped (Fsync) and the data index is added to the memory table and returned successfully. This design ensures consistency of the data. At the same time, the throughput performance requirements of the write disk, it is recommended to bulk submit data (Influxdb provides a b

Installation of words I will not say, mainly write down some of the internal operations.How do I implement a template to select which hosts to monitor? As in the upper-left corner, after the selection of monitoring host, the following graphics will also change, so that interactive operation will be more conducive to our monitoring. Set it up so you can.Show tag values from net (I monitor NIC) with key= "host"At first, because I am not familiar with the command of

For more information, please refer toOfficial website Reference Document: http://docs.grafana.org/Official Demo Address: http://play.grafana.org/First, create a new dashboard650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/7C/73/wKiom1bQUGiwrnY9AAGJARvdjuQ030.png "title=" Qq20160226211931.png "alt=" Wkiom1bqugiwrny9aagjarvdjuq030.png "/>Second, add panel650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/7C/73/wKiom1bQUNKz7UZtAADfPXJFS-U629.png "title=" 1.png " alt= "Wkiom1bqunk

:00:00Z 4.318944629367029 2015-09-02T00:00:00Z 4.363877681204781 2015-09-12T00:00:00Z 4.698114708116322 ?2015-09-22T00:00:00Z -100Example 3Use fill() with none : SELECT MEAN(water_level) FROM h2o_feet WHERE time >= ‘2015-08-18‘ AND time Results name: h2o_feet -------------- time mean 2015-08-13T00:00:00Z 4.306212083333323 2015-08-23T00:00:00Z 4.318944629367029 2015-09-02T00:00:00Z 4.363877681204781 2015-09-12T00:00:00Z 4.69811470811633 ?Note: If you use Group (in

Knowledge background??I. MARIADB copy-related knowledge??Source of 1.mariadb???? MySQL database is currently in the database market share only second only to the Oracle database, but also the open source database leader. Because MySQL database is open-source and high-performance, but also free (but not optimistic after Oracle acquisition), so the father of MySQL has opened a new MySQL branch mariadb,mariadb relative MySQL version of the update fast, the new features are installed quickly, The be

The so-called "copying objects" generates a "sibling brother" that is exactly the same as the specified object ". For object replication, there are two scenarios: shallow replication and deep replication. 1. Shallow copy: when the field value of the object is copied, the object referenced by the field will not be copied. For example, if an object has a fiel

This article demonstrates how to build the most basic transactional replication.Environment Preparation: 2 virtual machines:The server names are Repa and Repb,repa are publishers, and REPB are subscribers. Are installed WindowsServer 2008r2 English version (the reason for working in a foreign company). and ensure that the two servers can exchange visits.SQL Server:In the above virtual machine, install SQL Server R2 x64 English Enterprise Edition separately.Demo Database:Microsoft Sample Database

The ultimate goal of data replication is to synchronize the data of one server with the data of another server, which can achieve data redundancy or load balancing of services. A master server can connect multiple slave servers, and the slave server can act as the master server in turn. The master-slave server can be located in different network topologies. Due to the powerful mysql replication function, th

The previous blog said how to use Xtrabackup to back up and restore databases. After the database has been restored, the two machine databases are the same, including Binlog file and Pos.At the same time, after the Xtrabackup backup is completed, the relevant Binlog file and POS information has been written to the backup information file, and the cat can view it under Linux. Then execute the Change Master command on the standby to successfully build the master-slave

Asynchronous replication: MySQL natively supports one-way, asynchronous replication. Asynchronous replication means there is a delay in copying data from one machine to another-most importantly this means that the data cannot be copied/applied to the slave at the same time when the application's transaction commit has been confirmed. Typically, this delay is dete

MariaDB's GTID replication and multi-source replication, mariadbgtid Replication What is GTID? GTID is the global transaction ID (global transaction identifier). It was initially implemented by google and officially added to MySQL in MySQL 5.6. GTID is actually composed of UUID + TID. UUID is the unique identifier of a MySQL instance. TID indicates the number of

Tags: mysql replicationMySQL replication principle/library-based multi-threaded replication principle/BLGC-based multi-threaded replication principleSingle thread master-slave replication:From the library to the main library to request Binlog, and binlog into their own relaylog, from the library redo Binlog inside the SQL,This is done mainly by the following thre