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Preface Although the redhat system is installed by default with yum, the redhat update package is only valid for registered users. For us poor people, we have to manually change to the CentOS update package. Initially searching for information on the Internet: Redhat 7 uses the Yum network source of CentOS 7 The basic process is: Remove t ...

Overview of Linux Cluster According to the function, it can be divided into two categories: high availability and load balancing. High availability clusters usually consist of two servers, one working and the other serving as redundancy. When the serving machine goes down, redundancy will take over and continue to serve. Open source software ...

Install freeredius in CentOS 6.5: yum -y install httpd httpd-devel mysql mysql-server mysql-devel yum -y install php php-devel php-mysql php-common php-gd php-mbstring php-mcrypt php-xml /etc/init.d/httpd start /etc/init.d/mysqld start chkconfig httpd on chkconfig mysqld on mysqladmin -u root password 'newpassowrd' In ...

I. lvs 1. Noun Interpretation LVS is the abbreviation of Linux Virtual Server, which means Linux Virtual Server, is a virtual server cluster system. 2. Technical introduction of LVS The following quotation is from Baidu Encyclopedia [1] Technical Introduction LVS cluster adopts IP load balancing technology and con ...

3. MySQL installation Several commonly used installation packages of MySQL: rpm, source code, binary compiler-free rpm package can not be customized, not recommended; source code to compile, very slow, but can improve performance, temporarily do not learn; learn others compiled compiler-free package first 3.1 Download Software Package [root@l ...

1. The principle of separation of reading and writing: Read-write separation is to modify on the main server, data will be synchronized to the slave server, the slave server can only provide read data, can not write, backup at the same time to achieve the optimization of database performance, and improve server security. Inst ...

PXE What is 1 pxe? PXE(preboot execute environment, pre-boot execution environment) is Intel company The latest technology developed, working in Client/Server network mode, support Workstation The image is downloaded from the remote server through the network and the operating system is booted through the network. During the ...

Step 1: Get the mysql yum source Get the download address of RPM packages from mysql https://dev.mysql.com/downloads/repo/yum/ Click Download and right-click to get the download link https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm Of course, rpm can also be downloaded directly to the local. [root@hal ...

Related recommendations The kubernetes environment of this article: https://blog.51cto.com/billy98/2350660 I. description This article describes how to upgrade the Kubernetes cluster created using kubeadm from version 1.13.x to version 1.14.x. Only one MINOR version can be upgraded to the next MINOR version, or between PATCH versions of the s ...

Openstack Cloud Computing (2): Openstack Rocky Deployment Tri nova Deployment and Validation (Computing Node) Tags (space delimited): openstack series First: nova compute node initialization 2: nova Computing Node Configuration First: nova compute node initialization 1.1 Configuration Host Name login: 10.0.0.31 cat /etc/hosts --- 10.0 ...