Others

First, the purpose of the experiment:MySQL also supports semi-synchronous replication in master-slave replication, andmysql replication is asynchronous because the synchronization performance is very poor. After the main library distribution event,

Database Linke is an object that builds a path to another database, which allows querying of remote tables through the DB link, and I understand that it can be counted as a distributed database usage.Database link is a one-way connection, and since

Tools overviewThis is the case, before our company has a lot of SQL used to complete some very humble but have to complete the business, out of convenience directly in the SQL Query Analyzer execution, supposedly should write some special tools, but

Linux Virtual Server (LVS): ksoftirqd processes run out of Single-core 100% si Processing Soft interruptions, leading to performance bottlenecks Recently tested LVS performance, and found that the system reaches its peak performance when one of the

Users who often log on to SSH can feel that every time they log on to SSH, they always have to wait for a moment to connect. This is because the OpenSSH server has a DNS search option, UseDNS is enabled by default. When the UseDNS option is enabled,

Mod_pagespeed is an apache acceleration module. It is a free dumb-type website optimization tool provided by Google. This acceleration module can automatically transmit html bytes and images over the network, as well as css compression and other

The "This account is currently not available" error occurred when switching users on a new server today. I searched the internet and found that the user's shell is not allowed to log on. solution: for example, if a problem occurs when I use

From RPM version 4.1, the signature of the software package will be checked during installation or upgrade. If your system uses the old version of GPGkeys, You need to obtain the latest GPG keys for installation. I. Error Message Reference 1. A

I. Single-nic network can be pinged but cannot be ssh solvedAfter route add default gw 10.0.116.62 is complete, the Intranet can be accessed.After the restart, the gateway becomes invalid. Solution: Create a script file starting with "S" under "/etc/

Gsung should deal with high-concurrency access. I heard that there is a set of methods. To cope with 10 thousand concurrent requests, I got an lnmp for testing. After the installation is complete, the 1000-line concurrent access occurs, and the 502

During LNMP, The nginx service was started and cannot be enabled. As a result, the web page cannot be opened. The following error message is displayed when starting the service: Starting nginx: [emerg] bind () to 0.0.0.0: 80 failed (98: Address

Deviceeth0doesnotseemtobepresent and delayinginitialization often occur during Virtual Machine Replication. At this time, you need to do two things.1. vi /Etc/sysconfig/network-scripts/The ifcfg-eth0ifcfg-eth0 configuration file saves the previous

Recently upgraded php memcached to 2.1.0. because it depends on the libmemcached library, the previously installed version is 1.0.2. An error occurs during compilation and a later version of libmemcached is required. Therefore, download the latest

On Thursday, I went to the data center to install the system. I bought a new dell server and made RAID 5 for 6 2 TB hard disks. I used all the hard disk space when installing the system 《2 TB or above hard disk installationCentos6 is introduced in

In the past few days, we have migrated the platform again. In the same system configuration, we just moved the program to a slightly better server. When the problem arises, Chinese characters on all web pages are garbled. After a night, we finally

Stats-storage-0:/root # iptables -- flushStats-storage-0:/etc/sysconfig/network-scripts # serviceiptablesstartFlushingfirewallrules: [OK]SettingchainstopolicyACCEPT: filter [OK]Unloadingiptablesmodules:... Andthereithangs. WhenIthenrun,

Fault analysis:When the machine is changed, the mac address of the NIC is changed. This problem is caused by udev.Solution:Method 1:You can modify/etc/udev/rules against the existing mac address. d/The 70-persistent-net.rules file in the directory

Putty Chinese garbled Solution Method: Open the putty main program, select window-> Appearance-> Font settings-> Change..., select the Fixedsys Font, and select CHINESE_GB2312 as the character set. In window-> Appearance-> Translation, modify ed

Problem description The general options of SecureCRT and SecureFX have been set to UTF-8, but the new Chinese folder in SecureCRT, in SecureFX is still garbled, this problem, find a lot of methods, finally, let's talk about the solution.View server

Xshell is a very good tool for embedded development. However, it may be a bit uncomfortable to see Chinese characters as garbled characters. The solution is actually very simple, that is, to change the xshell encoding method to UTF-8. [File]->