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FastDFS is an open-source lightweight distributed file system, which manages files. Its functions include file storage, file synchronization, file access (file upload, file download), etc. It solves the problems of mass storage and load balancing. FastDFS is especially suitable for online services with file as the carrier, multi picture, multi ...

MySQL + maintained dual active hot standby highly available operation records Environmental Science: ubuntu18.04.2 mysql5.7.21 1 #1)install keepalived And configure it as a system service. master1 and master2 The following operations are also performed on both machines: 2 apt-get install libssl-dev 3 apt-get install openssl 4 apt-g ...

This article mainly writes some shell script sorting tools. sort Summary Sort is a tool to sort the contents of files in behavioral units, or according to different data types. usage sort parameter -f: ignore case-b: ignore the space before each line-M: sort by month-n: sort by number-r: reverse sort-u: equivalent to uniq, indicating that o ...

Molecular force, also known as intermolecular force and van der Waals force, refers to the interaction between molecules. When the two molecules are far away from each other, they are mainly attractive. This force mainly comes from the interaction caused by the polarization of one molecule by the electric dipole moment of another molecule which ...

Molecular force, also known as intermolecular force and van der Waals force, refers to the interaction between molecules. When the two molecules are far away from each other, they are mainly attractive. This force mainly comes from the interaction caused by the polarization of one molecule by the electric dipole moment of another molecule which ...

Practice environment deployment Topology and requirements Note: the capacity and business board of SW equipment and SW-3 equipment need to be added in advance Practical steps Step 1: configure SW switch conf t //Enter global mode, set VLAN 10 and 20 vlan 10,20 ex do show vlan-sw b //View vlan information VLAN Name ...

Redis-4.0.14 Cluster installation and deployment The installation environment of this tutorial is kvm virtual machine and Intranet environment in nat mode. In order to save server resources, this paper uses a single instance Linux host for demonstration. Do not deploy multiple redis instances to a Linux server in the case of large traffic in ...

Base64 is one of the most common encoding methods used to transmit 8Bit bytecode on the network. Base64 is a method based on 64 printable characters to represent binary data. You can view RFC2045 ～ RFC2049, which has the detailed specification of MIME. Base64 encoding is a binary to character proc ...

Kubeadm Deploys High Availability Kubernetes Cluster Directory [-] Introduction to kuberadm 1. Kuberadm function 2. Kuberadm function 3. Functional version II. Pre-preparation 1. Description of virtual machine allocation 2. Occupation of each node port 3. Basic environment settings Installation of Keepalived 1. Install preserved from yum. 2. C ...

Preface The core point of the collaboration is the use of the collaboration, that is, you only need to know how to use the collaboration; but if you want to know how to achieve the collaboration, you need to know the iterator, the generator in turn. If you only want to see the use of the coordinator, you just need to look at the first part; i ...