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20 Linux server Performance tuning tips

instead of dynamic content whenever possible, and if you are generating weather forecasts or other data that must be updated every 1 hours, it is best to write a program that generates a static file every 1 hours instead of letting the user run a CGI to generate the report dynamically. Choosing the fastest and most suitable api,cgi for a dynamic application can be the easiest to program, but it will produce a process for each request, which is usually a costly and unnecessary process, fastcgi i

20 Linux server Performance tuning tips

to put the system log in memory, when the system shuts down and then copy it to the hard disk, when you run a syslog-enabled laptop or mobile device, Ramlog can help you improve the system battery or mobile device flash drive life, One of the benefits of using Ramlog is that there is no need to worry about a daemon sending a message to the syslog every 30 seconds, before the hard drive must be kept running, which is bad for hard drives and batteries.19. Package First, then writeIn memory to par

SQL Server programming is a must--(1-20-point summary)

needs to be behind the WHERE clause, otherwise an error occursSELECT Prod_name, Prod_priceFrom ProductsWHERE Prod_price = 2.50ORDER by Prod_name DESC--18. Mismatch check: List all products not manufactured by Vendor 1003SELECT vend_id, Prod_nameFrom ProductsWHERE vend_id --where vend_id! = 1003;--19. Scope Check: Retrieve all products priced between $5 and $10SELECT Prod_name, Prod_priceFrom ProductsWHERE Prod_price between 5 and 10;--where Prod_price >= 5 and Prod_price --

Fedora 20 steps to build a VPN server

Do not look down, according to use PRITUNL to build VPN server to do relatively simple The instructions on the Internet are all rubbish, all kinds of chaos. It's a waste of my time. Installing PPTP server sudo yum install pptpd-y Edit Vim/etc/ppp/chap-secretsJoin a line User name pptpd Password *Start pptpd Service PPTPD StartTry to connect to the client, establish a PPTP connection, remember to go t

20, Linux command to monitor the server disk

Monitoring Linux Server disksServer disk performance testing is also a more interesting process. First of all, we need to figure out what's on disk, so here's a bird's-home dish.Not only do we have to figure out when the disk will be full, but also monitor the disk's read and write speed. Which is what we often call I/ODf-h//View disk usageIotop (this looks more intuitive)IostatNmonThe 22nd article has been introduced click NmonPerfMon Metrics Collect

Fedora 20 steps to build a VPN server

Installing PPTP server Yum Install Pptpd-yEdit Vim/etc/ppp/chap-secretsJoin a line User name pptpd Password *Start pptpd Service PPTPD StartTry to connect to the client, establish a PPTP connection, remember to go to advanced settings, open use MPPE encryption, or not even Even after, can't surf the internet, first disconnect, behind still have work to do. Set VPN IP segment echo "Localip 192.168.0.1" >>/etc/pptpd.confecho "Remoteip 192.168.0.2" >>/et

Python Learning Note 20: Server advanced

tell the Python server the language in which the script is used (our CGI is Python, and of course it can be another language, like bash).The CGI package is used to extract the tabular information submitted in the request (we do not dive into the CGI package for a moment). The script is only responsible for outputting all the results to the standard output (using print).The Cgihttprequesthandler collects these outputs and assembles them into response

[ext] 20 The Linux server performance tuning tips you have to know

whenever possible, and if you are generating weather forecasts or other data that must be updated every 1 hours, it is best to write a program that generates a static file every 1 hours instead of letting the user run a CGI to generate the report dynamically.Choosing the fastest and most suitable api,cgi for a dynamic application can be the easiest to program, but it will produce a process for each request, which is usually a costly and unnecessary process, fastcgi is a better choice, like Apac

20. MDT Update 1 Batch Deployment-How to install patches with WSUS patch server

-2015-10-11-18-09-21.png "alt=" Wkiom1yape6jadwqaabns6wok8o243.jpg "/>3, the console to check the customer's installation timeBecause of the need for online WSUS, although not to the Microsoft Internet to download, but still need a lot of time, the above client deployment directly using the WSUS server, over the past 3 hours, more than usual deployment of 2个小时40分钟.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/74/54/wKioL1YaO22RXXdUAAQR5aZ

20 Linux server performance optimization techniques worth collecting _linux

Linux is an open source operating system, it supports a variety of hardware platforms, Linux servers around the world, the main difference between it and Windows is that the Linux server by default generally does not provide a GUI (graphical user interface), but the command line interface, Its primary purpose is to efficiently handle non-interactive processes, and response times are not that important, and conversely, the ability to handle high loads

Set port 21 and Port 20 of the ftp server in iptables firewall

It is very convenient to install ftp on a Linux server to provide users with upload and download. However, if your server has enabled the iptables firewall, you need to set the ftp port. I have also used iptables to allow access from a port. why do I need to demonstrate the ftp port? Because the ftp port is really special, it is very convenient to install ftp on Linux servers such as port 80 and port 22 to

Azure SQL Database (20) using SQL Server Upgrade Advisor

Analyze, then select the appropriate databases and login options, such as:       4. Click Connect, then select the database to be analyzed, here we choose ADVENTUREWORKS2016CTP3      5. Once the database is selected, we can run it for analysis. Such as:       6. After the operation is complete, the advisor will tell us the results of the analysis data sheet. Such as:    , the red exclamation mark indicates that the table could not be migrated to Azure Stretch Database, which could cause compat

20 Linux Server Security Hardening Recommendations (i)

Linux server security is important for protecting user data and intellectual property, while also reducing the time you face hackers. At work, the system administrator is usually responsible for the security of Linux, and in this article, 20 recommendations for hardening Linux systems are described. All of the recommendations in this article are based on the release of CentOS, Rhel systems, or Ubuntu/debian

How to Build OpenLDAP server with fedora 20 and centos 6.5

Objective: To use LDAP as the data directory of the System user and manage LDAP data based on the Web. InstallTo use yum for installation, you must install Apache, PHP, and LDAP software packages to manage the LDAP server in Web mode. To verify the user through LDAP, be sure to install nss-Pam-ldapd and pam_ldap. Web management uses LDAP-account-manager or phpldapadmin. Lam and phpldapadmin can be directly installed using RPM packages. Centos 6.5 us

20 Server Web site root directory want to be consistent (such as load balancing), how to keep the file synchronization update? The more detailed the better.

20 Server Web site root directory want to be consistent, how to keep the file synchronization update? Reply content: 20 Server Web site root directory want to be consistent, how to keep the file synchronization update? Must be Distributed file synchronization system, the general simple operation will have probl

20 Linux Server Security Hardening Recommendations (II)

appropriate room security is scheduled.#9, disable services that you do not need. Disable all unnecessary services and daemons, and remove them from the system boot. Use the following command to check if a service is booting with the system.grep ' 3:on 'To disable a service, you can use the following command:# service ServiceName stop# chkconfig serviceName off#9.1, check the network monitoring port.Use the netstat command to see which listener ports are on the

SQL Server primary key, use of foreign keys, and use of subqueries November 20

This morning, I learned about the use of primary and foreign keys in SQL Server and how to establish the connection between primary key and foreign key.In the afternoon, I learned how to apply the subquery inside SQL Server, and also practiced the use of functions (String functions, aggregate functions).Today's summary: by learning to understand the use of primary and foreign keys, as well as subqueries (se

Atfax: Enterprise-class Fax server for units of more than 20 people

Administrator; 650) this.width=650; "src=" http://s2.51cto.com/wyfs02/M00/82/05/wKiom1dHyuzjT4zyAABboTIwm9k753.jpg "title=" a7.jpg "Style=" FLOAT:LEFT;WIDTH:250PX;HEIGHT:176PX; "width=" "height=" 176 "border=" 0 "hspace=" 0 "vspace=" 0 "alt=" Wkiom1dhyuzjt4zyaabbotiwm9k753.jpg "/> 650) this.width=650; "src=" http://s1.51cto.com/wyfs02/M00/82/05/wKiom1dHyu2BSoujAABy9e8uAc4265.jpg "title=" a8.jpg "Style=" float:left;width:250px;height:202px; "width=" "height=" 202

Configuring the Samba server under Fedora 20

take one of these the values:# targeted-targeted processes is protected,# Minimum-modification of targeted policy. Only selected processes is protected.# Mls-multi level Security protection.selinuxtype=targeted7 See if Fedora installs Samba successfully[Email protected]/]# Rpm-qa |grep Sambasamba-libs-4.1.14-1.fc20.i686samba-client-4.1.14-1.fc20.i686samba-4.1.14-1.fc20.i686samba-common-4.1.14-1.fc20.i686The above information indicates that Samba installation was successful8 Testing Samba

Introduction to common and useful 20 server software in Linux

Introduction to the 20 commonly used server software in Linux-Linux Enterprise Application-Linux server application information. The following is a detailed description. 1. Apache 2.0.59 for Linux Note: One of the most popular HTTP server software. Quick, reliable, and scalable with simple APIs, The Perl/Python interpr

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