how to unblock server

A friend sent a message, said a system application log in when prompted to connect timeout, let help handle it.Ask him if the application and the database are normal, reply that the database seems to have no problem, but the application log is

Connection MySQL failed, in addition to the permissions issue, also encountered this situation, error message:Host XXX is blocked because of many connection errors, unblock with ' mysqladmin FL Ush-hosts '. and XXX is not the IP address but domain

Problem phenomenon:After the server installed VirusScan Enterprise 8.8.0, it was a problem to call external SMTP on the server, and I tried to telent the SMTP server.Workaround:I. Modifying client-side protection policiesOpen "VirusScan console" = =

Because the application level does not use multithreading, this causes the application to handle the socket socket one-by-one. This socket socket does not finish processing, you can not handle the next socket socket. The problem can be improved by

directory (?) [+] Client Server-side Client1.ERROR (HY000) at line 1:lost connection to MySQL server during queryUsing Select a large table, the following error occurs when a query is killed by the main library in the process2.

For the general Small and medium-sized enterprises, if you want to security management of the enterprise network, it is not necessarily expensive to buy professional firewall settings, directly with the operating system itself with the firewall

Installing LAMP on Ubuntu Server 16.04 LTSThe LAMP solution is a collection of free and open source software that contains Linux , Web server (Apache) , Database server (mysql/mariadb), and PHP (scripting language). lamp is the basic platform for

The server is unresponsive (or the socket for the local MySQL server is not configured correctly)   The first case: (Deep cleanup garbage causes host.) MyD lost)   Like many netizens! With Wamp (or XAMPP, speedphp) It is easy to quickly build a

Original link:MySQL optimization under the CentOS serverFirst, the optimization of MySQL thinkingMySQL optimization is divided into two ways:1. Optimization prior to server use2. Optimization in service usageSecond, MySQL's basic optimization steps1.

Learning the combination of NiO and SSL Reference: http://docs.oracle.com/javase/1.5.0/docs/guide/security/jsse/JSSERefGuide.html#KeyClasses NIO has socketchannel but does not have sslsocketchannel. According to the document, if you want to