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  Master/slave Mode of mongodb

  # Master / Slave configuration of mongodb (without auth authentication) # Note:-synchronize the time before the server node is enabled-be sure to pass through the relevant ports if you turn on the firewall, and set it if you turn on selinux. It is best to establish a double-click mutual trust mode.

  2022-06-01 11:39:31 Views: 218
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  Mysql number creation test

  1. Create custom database create database custom;2, create cuser table create table cuser (id int unsigned auto_increment pri)

  2022-06-01 11:39:31 Views: 214
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  Installation of SQL database

  The first step to install the SQL database is to mount the SQL image file. The second step is to open the SQL image for installation. The third step is to select the installation function. The fourth step is to skip the fifth step without installing the product update. If you choose to install the update and wait for it to be installed, step 6 use the default product key step 7 to check.

  2022-06-01 11:39:11 Views: 240
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  Redis learns 7Murray-persistence-related testing RDB method

  1. Redis only do cache configuration comment out RDB persistence configuration add memory configuration and reclaim configuration (maxmemory and maxmemory-policy) 2, test RDB persistence 2.1, close RDB persistence test edit configuration file #

  2022-06-01 11:39:10 Views: 304
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  Ansible + tornado + MongoDB

  Http://blog.csdn.net/smallfish2983/article/details/38078019 according to the above guy wrote, beginners, do not spit blood, the basic function has been realized. Root@ubuntu12:~

  2022-06-01 11:39:02 Views: 218
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  Linux Learning Notes: rpm package Management

  Take CentOS as an example, the relevant contents of rpm package manager are as follows: CentOS package manager: package naming rules: source code package: software_name-VERSION.tar.gzVERSION:major.min

  2022-06-01 11:39:01 Views: 273
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  Build LAMP environment with source code package

  Step 1: install the compilation tool gcc*, install the database compilation tool cmake bisonyum-y install gcc* cmake bison2, download the LAMP package: lamp.zip, and use the script to extract t in batches

  2022-06-01 11:38:58 Views: 230
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  Establishment of HR sample user of Oracle11g

  The establishment of Oracle11g HR sample users 1. Hr users in oracle 11g need to be installed separately, which is troublesome. Many of the learning examples in books are HR users' cases, which are downloaded and released to $ORACLE_HOME/demo/sch.

  2022-06-01 11:38:58 Views: 258
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  How does SQL Server track the change count for each column?

  How does SQL Server track the change count for each column? On page 83 of "inside the SQL Server query optimizer", there is a passage like this: "SQL Server defnes when

  2022-06-01 11:38:58 Views: 233
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  Oracle Job Chain

  The order in which Job Chains creates the chain creates the chain object; definition steps; increment rules in the chain; enable chain; to create a job that points to this chain. Create Chain Object Lab description: EN

  2022-06-01 11:38:57 Views: 239
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  What's new in Oracle 11g: automatically create partitions (Interval Partition)

  Partition has always been a technology that Oracle database is proud of. It is the existence of partition that makes it possible for Oracle to deal with massive data efficiently. In Oracle 11g, partition technology has been enhanced again in terms of ease of use and scalability. At 1

  2022-06-01 11:38:54 Views: 206
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  How to modify the default time zone of mysql

  This article shows you how to modify the default time zone of mysql. The code is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article. 1. View MySQL's current time zone and time show variables l

  2022-06-01 11:38:54 Views: 298
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  How to use the MySQL authorization command grant

  How to use the MySQL authorization command grant? Many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can gain something. An example of this article, running on MySQL 5.0,

  2022-06-01 11:38:54 Views: 243
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  SQL Server 2017 AlwaysOn on Linux configuration and maintenance (7)

  2.2.3 two synchronous replicas and an availability group with two (or more) synchronous replicas and one configuration-only replicas provide data protection and may also provide high availability. The following figure shows this architecture: 1 and 2 in the illustration represent: 1. Synchronize user data replication to secondary

  2022-06-01 11:38:50 Views: 286
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  Do I need to restart to change the redis?

  This article will explain in detail about the need to restart the replacement of redis, the content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article. Redis is an open source program written in ANSI C and supported

  2022-06-01 11:38:47 Views: 223
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  MHA Cluster Management

  Environment: 192.168.205.37: as MHA server192.168.205.47: as Master server192.168.205.57: as Slave1 server192.

  2022-06-01 11:38:47 Views: 288
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  What does sql injection vulnerability mean?

  Today, I will talk to you about the meaning of sql injection vulnerabilities, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article. SQL injection vulnerability refers to the insertion of maliciously entered SQL commands into We

  2022-06-01 11:38:46 Views: 284
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  What are Codd rules?

  This article uses easy-to-understand examples to introduce what is the Codd rules, the code is very detailed, interested friends can refer to, hope to be helpful to you. The Codd rule, also known as Codd's law, is made up of 13 rules that determine whether DBMS can

  2022-06-01 11:38:43 Views: 206
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  Index in Oracle

  Index is a mechanism that can sort data records physically or logically. For queries based on index columns, the query efficiency is greatly improved. An index is a separate, physical data structure that includes the values of one or more columns in a table.

  2022-06-01 11:38:40 Views: 261
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  Errors when inserting data into child tables with foreign key constraints

  Mysql- foreign key parent table: t _ grade child table: t_student when inserting data in the word table, there must be a corresponding parent table record. If there is no corresponding related record in the parent table, the data insertion of the child table fails.

  2022-06-01 11:38:40 Views: 227