perl round off

MHA (Master high availability) is currently a relatively mature solution for MySQL highly available, developed by the Japanese DeNA company Youshimaton (now on Facebook) and is an excellent set of MySQL high availability Highly available software

A semi-synchronous configuration of MySQL was completed in the previous article.Link: in Centos7 to play MySQL semi-sync and Keepalived+mha (one), this article continues to complete the configuration of mha+keepalived. Role Ip

I. What is Squid? Squid is a software used to buffer Internet data. In this way, it implements its function by accepting requests from the target (object) that people need to download and processing these requests as appropriate. That is to say, if

About:   The nginx_http_push_module is designed to become a mature HTTP push and comet service. It can handle all links and broadcast messages to all clients only through HTTP requests, this makes it easy for you to write asynchronous web

Oracle Installation reference: Https://www.cnblogs.com/zhichaoma/p/9288739.htmlfor CDB, startup and shutdown are the same as in previous traditional ways, with the following syntax:Startup[nomount | MOUNT | RESTRICT | UPGRADE | Force | READ

1. Install the corresponding compilation tool before installing nginxYum-y install GCC gcc-C ++ Autoconf automakeYum-y install zlib-devel OpenSSL-devel PCRE-devel Create an nginx GroupGroupadd-r nginxUseradd-S/sbin/nologin-G nginx-r nginxId nginx

Domestic virtual machines are generally not available. htaccess function (as far as I know, Discuz's host seems to provide this function), while in foreign hosts,. htaccess function seems to be standard, the author of the blog frame on MT, support.

Establish lamp ServiceOne, generate multiple access to the Domain name window1.yum Install Httpd-yHTTP and HTTPS are now joined to the firewall, but also set SELinux to remotely access or change the file's label (security

Many problems need to be considered in the system architecture of large websites. Large websites have high concurrency and high load. in the face of massive user access and high concurrency requests, the basic solutions are concentrated in the

11.32 PHP Dynamic Expansion Module installationNote: This section operates using PHP7.To view the PHP module:[Email protected] ~]#/usr/local/php/bin/php-mInstalling the Redis moduleRedis is a key-value storage system. Similar to memcached, it