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  • Skype for bus problem, the conference can be established on the public network, but cannot enter the conference, prompting

    Skype for bus problem, the conference can be established on the public network, but cannot enter the conference, prompting "your call has been interrupted"

    Skype for bus problem, the conference can be established in the external network, but can not enter the conference, prompting "your call has been interrupted", there is no problem in the internal network.

    Shulou · 2022-06-03 08:03
  • Explanation of Linux IO performance monitoring parameters

    Explanation of Linux IO performance monitoring parameters

    The meanings of the above columns are as follows: rrqm/s: the number of read requests to the device per second is merged, and the file system merges requests to read the same block (block). Wrqm/s: write requests to the device are merged per second.

    Shulou · 2022-06-03 08:03
  • Memo: free CVM

    Memo: free CVM

    Recently, I did a project that wanted to show it to others on the public network. After searching for a long time, I accidentally found a free cloud server. I had never heard of it before. Https://www.sanfengyun.com can apply for free virtual hosts and free servers according to its own needs.

    Shulou · 2022-06-03 08:03
  • A quick understanding of the seven-layer reference model of computer network OSI

    A quick understanding of the seven-layer reference model of computer network OSI

    In 1984, the International Organization for Standardization (ISO) issued the Open Systems Interconnection reference Model (OSI). The OSI reference model divides the network into seven layers, including physical layer, data link layer, network layer, transport layer, session layer, presentation layer and application layer. Physical layer is mainly composed of

    Shulou · 2022-06-03 08:03
  • Kubernetes log streaming data processing

    Kubernetes log streaming data processing

    PS: recently refactoring the company's business containerization platform, recording a piece. With regard to container logs, kubernetes python API itself provides log streaming data, which will not output new data in previous versions, which has been improved in subsequent versions. Go directly to the code Fl

    Shulou · 2022-06-03 08:02
  • Implementing DNAT with Azure Firewall

    Implementing DNAT with Azure Firewall

    First of all, around our architecture diagram, what we want to achieve this time is to do SNAT and DNAT through FW. Suppose we have a web server in the VNET where FW is located or a VNET connected to peering, and we want to be able to control traffic through FW, so we need to do D.

    Shulou · 2022-06-03 08:02
  • Socket and socketserver based on python

    Socket and socketserver based on python

    -the original meaning of introducing Socket is "hole" or "socket", which is also called "socket" in the process communication mechanism of Unix. Sockets are actually not complex; they consist of an ip address and a port number. Socket, as it originally means in English, is like a porous plug.

    Shulou · 2022-06-03 08:02
  • High availability of web Cluster realized by haproxy+keepalived

    High availability of web Cluster realized by haproxy+keepalived

    The Conceptual load balancing of web Cluster High availability load balancing based on haproxy+keepalived is one of the factors that must be considered in the design of distributed system architecture. It refers to sharing the load of "request" and "access" to the set equally as far as possible through scheduling and distribution.

    Shulou · 2022-06-03 08:02
  • Password cracking Program of Campus Network

    Password cracking Program of Campus Network

    Environment: Python 2.7 cycles python#coding=utf8print python#coding=utf8print "+ * 50print u" function: easy to crack the campus network account "print u" Wechat official account: computer fun "pr"

    Shulou · 2022-06-03 08:02
  • Introduction to the principle of Open-falcon

    Introduction to the principle of Open-falcon

    Open-falcon is Xiaomi's open source monitoring tool. There are three ways to install open-falcon, one is stand-alone installation (back-end and front-end installation, one server is recommended), one is Docker installation, and the last one is distributed installation on multiple machines. Key points:

    Shulou · 2022-06-03 08:02
  • Nginx reverse proxy, virtual host

    Nginx reverse proxy, virtual host

    Nginx reverse proxy, virtual host 1, configure virtual host 1. Configure virtual hosts based on port 1.1 profile: [root@localhost conf.d] # vim vhost.conf server {li

    Shulou · 2022-06-03 08:02
  • Five excellent technological trends in 2020, keeping up with the trend of the times

    Five excellent technological trends in 2020, keeping up with the trend of the times

    Today, technological progress is faster than ever before. With the advent of 2020, what are the technological trends that cannot be ignored? Let's have a look together! World history is also a history of invention. The invention of gunpowder changed the world map, the invention of electric light changed the night, and the invention of the car changed the space distance.

    Shulou · 2022-06-03 08:02
  • Using Office365 to collect employee information of personal income tax reform

    Using Office365 to collect employee information of personal income tax reform

    Recently, the reform policy of reducing and reducing personal tax is more popular, and what is even more popular is that after collecting a lot of employee information through a public application, APP can not be opened, which means that there is a serious disclosure of employees' personal data, including name × × repayment bank contract and other information, which also gives lawbreakers an opportunity.

    Shulou · 2022-06-03 08:02
  • 3D Design Desktop Cloud

    3D Design Desktop Cloud

    Rongli 3D designs desktop cloud solutions to provide strong support for designers using GPU high-load applications, such as 3D modeling, ray tracing, rendering computing and other fields, bringing the extremely smooth 3D design desktop experience while improving work efficiency, manageability and security. The 3D design desktop cloud solution satisfies

    Shulou · 2022-06-03 08:02
  • MySQL High availability Architecture

    MySQL High availability Architecture

    1. MMM architecture MMM (Master-Master replication manger for MySQL) is a set of script programs that support dual-master failover and dual-master daily management. MMM is developed in Perl language and is mainly used for monitoring and

    Shulou · 2022-06-03 08:02
  • Automatic installation of virtual machines: network installation and pxe installation

    Automatic installation of virtual machines: network installation and pxe installation

    # Overview of 1.kickstart script Kickstart using kickstart, system administrators can create a file containing answers to all common questions during installation to install Red Hat Enterprise automatically

    Shulou · 2022-06-03 08:02
  • How to distinguish DAS, NAS and SAN

    How to distinguish DAS, NAS and SAN

    The server not only has high stability and high-speed access, but also is easy to manage, secure and easy to use, in order to reduce the energy and time cost of users in server maintenance, and focus on the development and promotion of their own business. Hundreds of millions of cloud servers are committed to providing users with the most cost-effective server! DAS- substance

    Shulou · 2022-06-03 08:02
  • Teacher idou teaches you Istio 16: how to use Istio to implement access control between microservices

    Teacher idou teaches you Istio 16: how to use Istio to implement access control between microservices

    Access control between microservices can be easily realized by using Istio. This article demonstrates two methods of using Denier adapter to deny access and Listchecker adapter to implement blacklist and whitelist. Usage scenarios sometimes require mutual access between microservices

    Shulou · 2022-06-03 08:01
  • How to check the brand model of physical machine

    How to check the brand model of physical machine

    Today, the editor will give you a brief introduction to the brands and models of physical machines. The purpose of this article: when doing the Skype for business Server 2015 project, we used to mainly use the physical server, but what is the brand model of the physical server and what is the hardware configuration?

    Shulou · 2022-06-03 08:01
  • Theory: learn shell programming specifications and variables in detail-A beginner must point in to explain the theory

    Theory: learn shell programming specifications and variables in detail-A beginner must point in to explain the theory

    Shell script programming specification shell script application scene shell programming specification pipeline and redirect shell script variables reveal the secrets of custom variables special variables this study understands that variable languages are divided into two categories. Strong language: you need to declare data types when defining variables.

    Shulou · 2022-06-03 08:01