ansible configuration management example

1. Introduction to ProFTPD. ProFTPD is an open source FTP server software, which is the most widely used domestic version of wu-ftpd in the world. It fixes many defects of WU-FTPd, significant improvements have been made in many aspects. One of the important changes is that it learns the Apache configuration method, making ProFTPD configuration and management eas

memory classes use the underlying OS Shared memory interface. Why use a group of classes instead of another group? This is determined by the trade-off between performance and flexibility. Because the actual distributor object can be changed at runtime, The ace_allocator class is more flexible. This is done through dynamic binding (which requires virtual functions in C ++). Therefore, such flexibility is not costly. The indirect nature of virtual function calls makes this solution a more expen

Spring,mybatis Transaction Management configuration and @transactional annotation usageOverviewTransaction management is critical for enterprise applications, and it guarantees data consistency even in the event of an exception.The Spring framework provides a consistent abstraction of transaction management, with the f

/master/Config.5. Tips Note that there are usually many line breaks in the configuration file, while the zookeeper client command line does not support character escape. For example, you want to save the content of the configuration file test. ini to zookeeper. The content of the file is as follows.[Common]DB = MySQLPasswd = root You may enter:[zk: 172.17.0.36:21

Common Methods for Storage Management and Application of system parameter configuration Author: Cheng Xiaoxu 1 [background] In the design and development of application software, especially some large and complex business systems, in order to meet the minimum system universal design, system operation parameters must be set at the system site or dynamically adjusted based on different customer needs. To main

Templet directory, the new directory is relatively simple, the more troublesome is to create a new Web page, because we are a class library project, cannot create a new ASPX page, the latter need to use the ASPX page, so we copy an ASPX page from somewhere else.Then you need to modify the class nameASPX page:Aspx.cs file:Aspx.designer.cs fileThen delete all the error codes, because we have to rewrite them.At this point we have all the projects set up.Third, the setting of Plugin.configIn order

Ningbo often needs to download design drawings from foreign customers' servers for production. When downloading, the network management system generally does not want to be affected by the Internet access or downloading of general users. Therefore, you can apply for two lines: Generally, both lines are open for Internet use; however, when special work is required, it can be controlled to retain specific lines for a large number of download tasks to e

Configuration and management of brocade optical fiber switch (B/S) This article uses the Brocade 300 optical fiber switch as an example. The default IP address of the brocade switch is 10.77.77.77. the user name is admin and the password is password. 1. login Management Interface (1) Add the IP address "10.77.77. ** (S

Build a Web development environment using IntelliJ IDEA and Maven Management (taking Spring MVC as an example) I used MyEclipse all the time. After I changed my job, the new company used IDEA. I first got to know IDEA and found that wow, there are so many shortcut keys, but I think it is very useful all the way, especially with Maven management, it's a breeze. Of

back the transaction only if the exception is thrown as a run-time unchecked exception, which is the subclass of RuntimeException that throws the exception (errors also causes the transaction to be rolled back), while throwing a checked exception does not cause the transaction to be rolled back. Can be explicitly configured to roll back transactions when those exceptions are thrown, including checked exceptions. You can also explicitly define those exceptions that are thrown without rolling bac

/etc/supervisord.conf#在Add a configuration file for MySQL instance under the/etc/supervisord directory as follows: [[emailprotected] supervisord] # cat mysql_3306.conf [program:mysql_3306] #command =/etc/init.d/mysql start--port=3306--sleep=3-- tryies=3--daemon Command=/usr/local/mysql/bin/mysqld_safe--defaults-file=/etc/my.cnf--datadir=/var/lib/ mysql/--pid-file=/var/lib/mysql/host-172-16-32-152.pid--basedir=/usr/local/mysql--log-error=/var/lib/m

transactiontemplate.Declarative transaction management is built on the AOP. The essence is to intercept the method before and after it, and then create or join a transaction before the target method starts, committing or rolling back the transaction according to execution after the target method is executed. The greatest advantage of declarative transactions is that you do not need to programmatically manage transactions, so that you do not need to d

");} catch (SQLException e) {e.printstacktrace ();} if (Object! = null) {flag = true;} return flag;} @Overridepublic listTestibatis.javaPackage Com.lyz.test;import Java.sql.date;import Java.util.list;import com.lyz.dao.studentdao;import Com.lyz.dao.impl.studentdaoimpl;import com.lyz.entity.student;/** * Ibatis Framework Test class * @author Liuyazhuang * */public class Testibatis {public static void main (string[] args) {Studentdao Studentdaoimpl = new Studentdaoimpl (); SYSTEM.OUT.PRINTLN ("tes

-- service-R F: \ svntest \ repository1 "displayname =" svnservice "depend = TCPIP start = auto Delete service: If there is a problem with the service installation, you may need to delete the service. To delete the previously added service, Run "SC Delete svnservice". "svnservice" is the name we used when creating the service. 8. SVN multi-project management We recommend that you create a library for each project. On the server side, create a direct

Configuration Management--finally to the point.When it comes to configuration management, it's important to understand the several concepts that are discussed below.Salt is the state of the Minion side that is managed through a file TOP.SLS.This file, Top.sls, is called a portal file, which records one or more environm

utility HTTP Port [8080]: HTTPS Port [8443]: Host fully qualified domain name, note that this name shoshould be fully resolvable [ovirt. engine]: Ovirt. engine did not resolve into an IP address User input failed validation, do you still wish to use it? (Yes | no): yes Password for Administrator (admin @ internal ): Confirm password: Database password (required for secure authentication with the locally created d atabase ): Confirm password: Organization Name for the Certificate: ovirttest The

composed of department managers, business personnel, project managers, development owners, test owners, and quality assurance personnel. The certificate engineer and configuration management engineer. For different types of projects, CCB members are different. For example, a high-tech project includes a technical director and a system integration project general

item.There are a few things to be aware of in the setup process: The Kernel memory leak detector After opening a few of the children are careful not to set up, which is "simple test for the Kernel memory leak Detector "and" Default Kmemleak to Off ".For example, the configuration options in the experiment are set as follows:After compiling the kernel, install the debug version of the kernel, reboot the Lin

This example describes the basic management of spring beans. Share to everyone for your reference, specific as follows: One, using setter method to complete dependency injection The following are the beans and beans-config.xml files. public class Hellobean { private String Helloword; //... Omit getter, setter method } public class Springdemo {public static vo

Achieve your goal: use PHP and MySQL to write a product information management system with a shopping cart functionI. Creating Databases and Tables1. Creating databases and tables: Demodb2. Create a table: goodsField: Product code, product name, commodity type, product picture, price, product description, stock, add timeSecond, create a php file to write code (the following is the PHP file to be created and its purpose)add.php Product Add pageedit.php