HAProxy+Keepalived for Mycat High Availability

In a real project, Mycat services also need to consider high availability. If the server Mycat is on is down, or if the Mycat service fails, it needs a standby machine to provide services and the Mycat cluster needs to be considered.Highly available options:We can use HAProxy+Keepalived with two Mycats to build Mycat clusters for high availabi ...

Posted by LuckyLucy on Wed, 24 Jun 2020 11:21:07 -0700

rockermq cluster building

**rockermq cluster building Cluster workflow Start NameServer, listen to the port after NameServer gets up, wait for Broker, Producer and Consumer to connect, which is equivalent to a routing control center. Broker starts, maintains a long connection with all nameservers, and sends heartbeat packets re ...

Posted by vidago on Tue, 16 Jun 2020 23:49:56 -0700

PostgreSQL installation tutorial of girlfriend metropolis

Pure Linux PostgreSQL offline installation tutorial for girlfriend PostgreSQL database installation, based on version 10.5.1, Use *. gz binary compression package to install manually on Linux system. Installation package: postgresql-10.5.1-linux-x64-binaries.tar.gz 1. Create postgres user groupadd p ...

Posted by PHP_PhREEEk on Sat, 13 Jun 2020 20:33:40 -0700

rsync+crond for scheduled backup

rsync introduction rsync is called remote synchronization in English. From the name of the software, it can be seen that rsync can make the data between the local and remote hosts copy the synchronous image and remote backup quickly. This function is similar to the scp command with ssh, but it is bet ...

Posted by vivianp79 on Fri, 12 Jun 2020 22:03:41 -0700

Tungsten Fabric solution guide Gateway MX

Author: Tony Liu translator: TF Compilation Group 1 Overview This guide describes how to use MX as a gateway to provide external or underlay connectivity for the overlay layer managed by Tungsten Fabric (the original version is contract, and its open source version has been renamed Tungsten Fabric, wh ...

Posted by georgee.b on Thu, 11 Jun 2020 19:49:44 -0700

High Availability Scheme Implementation of MySQL Master Replication+keepalived

1 Preface One MySQL host in the production environment has a single point of failure, so we want to make sure that MySQL is highly available, that is, two MySQLsServer If one of the MySQL servers hangs up, the other can take over immediately. MySQL's highly available solutions are generally as follows: keepalived+dual master MHA PXC MMM Hear ...

Posted by jwbworks on Fri, 05 Jun 2020 18:17:35 -0700

iscsi server installation and configuration

Installation and configuration of iscsi server 1, Principle ISCSI (Internet small computer system interface) It supports sending commands from the client to the storage device on the remote server through ip. The default port is 3260/tcp. 1. iscsi initiator: the client 2. iscsi target: remote shared disk provided b ...

Posted by jrobles on Wed, 03 Jun 2020 09:52:01 -0700

LVS load sharing (NAT mode) infrastructure

1. NAT mode topology and working principle There is a scheduler in front of a group of servers, which are connected through Switch/HUB. These servers provide the same network service and content, that is, no matter which server the request is sent to, the execution result is the same. The content of the service can be copied to the local hard d ...

Posted by Archadian on Mon, 01 Jun 2020 01:52:51 -0700

Step details for installing Mysql 8.0 under CentOS 7.7

This installation of Mysql's EnOS version is 7.7 1. Download Mysql First go to Mysql's website to download the installation package, web address https://dev.mysql.com/downloads/mysql/ It is recommended that you download the common version of Linux for easy administration of installation location and installation of multiple versions of MySQL on ...

Posted by mr_zhang on Wed, 13 May 2020 11:18:43 -0700

CentOS7 -- Kickstart + PXE for unattended batch installation configuration

What is Kickstart Installations? Kickstart Installations for unattended automatic installation Kickstart files, which are ready before installation, can be used to automatically perform the installation. It can be saved on a single server system and supports one to many: that is, a single file installs CentOS on multiple computers All Kickst ...

Posted by w.geoghegan on Wed, 13 May 2020 03:41:01 -0700