[VLAN advanced technology] - explanation of MUX VLAN operation principle and example configuration

1, Causes of MUX VLAN In my opinion, MUX VLAN is mainly designed for large and medium-sized networks. Generally, there are many departments with different responsibilities in large and medium-sized enterprises. Each department requires mutual independence, but some departments need to visit each other. If it is a large company, it will hav ...

Posted by siddscool19 on Mon, 18 Apr 2022 02:43:49 +0300

HA High Availability Configuration and Failover in Database

1. Overview of MHA MHA (MasterHigh Availability) is an excellent set of software for failover and master-slave replication in MySQL highly available environment.The emergence of MHA is to solve the MySQL single point problem.During MySQL failover, MHA can automatically complete the failover within 0-30 seconds.MHA ensures maximum data cons ...

Posted by expostfacto on Sun, 17 Apr 2022 20:22:33 +0300

The most complete openstack deployment process in the whole network (documents that beginners can build)

1. Host preparation nameIP addressHost nameremarksControl node10.0.0.11controllerMinimum 4G, enable virtualizationCalculation node10.0.0.31computelMinimum 2G, enable virtualization 1.2. Control node 1.3. Calculation node 2. Basic configuration #Modify the host IP address and host name, do hosts resolution, close selinux and close the firewa ...

Posted by themightydude on Sun, 17 Apr 2022 15:52:19 +0300

Shell script for loop experiment

catalogue 1. Calculate the sum of 1-100 2. Prompt the user to enter an integer less than 100 and calculate the sum of all integers from 1 to this number 3. The even and odd sums of all integers from 1 to 100 4. Execute the script and enter the user name. If the user exists, the output will prompt that the user already exists; If the user do ...

Posted by hitman6003 on Sat, 16 Apr 2022 19:00:52 +0300

k8s 3master+2worker node (kept + haproxy highly available)

k8s-v1.20.10 3master&1node Experimental environment Host network information and component information K8S cluster roleIPhost nameInstalled componentsVIP192.168.0.15VIPVIPMASTER192.168.0.11k8s-master-1apiserver,controller-manager,scheduler,etcd,docker,kubectl,kubelet,kube-proxy,calico,coredns,metric-server,keepalivedMASTER192.168.0.12k8s ...

Posted by pablocullen on Sat, 16 Apr 2022 15:49:50 +0300

kubernetes installation (domestic network + Alibaba cloud)

Operating system: CentOS-7.8 kubernets version: 1.20.4 docker version: 20.10.3 This is an installation tutorial, including docker installation, kubernetes installation and Kube flannel network plug-in installation. The whole installation process uses the domestic network environment. With the support of Alibaba cloud's image service, the ins ...

Posted by jaco on Sat, 16 Apr 2022 01:22:42 +0300

Brief introduction and use of Docker

1, docker version management 1. Version management Docker engine mainly has two versions: enterprise version (EE) and community version (CE) Every quarter (1-3, 4-6, 7-9, 10-12), the enterprise version and the community version will release a stable version. The community version will provide 4 months of support, while the enterprise versio ...

Posted by RJDavison on Fri, 15 Apr 2022 16:21:54 +0300

Linux remote access and control

1, SSH Remote Management 1.SSH definition SSH (Secure Shell) is a secure channel protocol, which is mainly used to realize the functions of remote login and remote replication of character interface.SSH protocol encrypts the data transmission between the communication parties, including the user password entered when the user logs in. The ...

Posted by madcat on Fri, 15 Apr 2022 14:16:34 +0300

Linux PXE batch network installation and Kickstart unattended installation

1, PXE batch network installation PXE (pre boot execution environment, running before the operating system) is a network boot technology developed by Intel. It works in the Client/Server mode, allowing the client to download the boot image from the remote server through the network and load the installation file or the entire operating sys ...

Posted by ladokha on Fri, 15 Apr 2022 01:04:28 +0300

Xiaohaoxue Linux is continuously updated

Xiaohao learns Linux (1) 1. Pre class side dishes 1. RPM package management commands Command format for installing software RPM - IVH filename rpmThe command format for upgrading software is RPM - uvh filename rpmThe command format for uninstalling software is RPM - e filename rpmCommand format for querying software description information R ...

Posted by allworknoplay on Thu, 14 Apr 2022 19:01:03 +0300