The first NVM zone backup mechanism was introduced in the previous article, but the write data length is limited by the sector size. This article introduces the second NVM zone data backup mechanism. This method first divides the NVM area into two equal-sized areas An and B, and takes area An as the official data area and area B as the backup area, each area
First, Gluster introduces that GlusterFS is the core of Scale-Out storage solution Gluster. It is an open source distributed file system with strong scale-out ability. It can support several PB storage capacity and handle thousands of clients through expansion. G
After the installation is completed, you need to do some configuration work on SCCM to provide services. The main tasks are as follows: DHCP configuration, user and computer discovery configuration, firewall configuration, SCCM configuration, patch distribution configuration (optional) DHCP configuration DHCP configuration is relatively simple, only need to configure 66
I. display date: date display format: date +% Y/%m/%d date +% HJV% M Calendar instruction: cal Calculator: bc displays a few decimal places: scale=number exit Calculator: quit2.[ tab] hotkey: enter
Today, it will be recorded in the history of global computer development, triggered by the large-scale outbreak of the "eternal blue" of "WannaCrypt", and once again sounded the alarm for information security. The malicious code against the Windows system is rampant all over the world, and there have been too many reports about it today. I will only extract it here.
The events module contains all the settings for handling connections in nginx. The common configuration items are as follows: events {use epoll;worker_connections 20000;} details the use of epoll by use epoll;#
The guide recently exchanged Service Mesh and its related technologies with several enterprise users, and everyone expressed great interest in its shape and future development. However, it shows a great deal about how to integrate the current enterprise application with Service Mesh.
Gitlab has been used internally by UCloud to manage code for a long time. Although Gitlab is excellent as an open source platform, we are not very satisfied with the agility it provides for CI/CD, and the code release cycle in internal practice still needs to be calculated on a daily basis. To that end, we have created
The definition function can also access the variable when it is not in its valid scope, that is, the closure; that is, the variable is beyond its scope and can also be used, which is the closure phenomenon. One of the possible usage scenarios? For example, at the end of the year, the company's bonuses for each department are different. For example,
The named pipe is dedicated to communication between unrelated processes open (".. / share_fifo", O_RDONLY, 777); this opens the named pipe as read-only, causing blocking and will not continue to execute open until other processes are opened for writing.
VLAN:virtual local area network, virtual local area network-background: can divide different WANs in layer 2 network, thus achieving fault isolation and rapid location;-function: reduce resource waste; improve security-definition: a V
When installing some of Microsoft's own applications, it uses a database, WID (windows internal database), whose Chinese name is windows built-in database. The applications that usually use this database are as follows: Active Di
Recently, when I was looking up help information with man-f on a newly deployed server, I unexpectedly reported "nothing appropriate". At that time, I thought that man was not installed, so I installed it with yum. As a result, I found that man had been installed, so m
Selenium Grid Selenium Grid is a tool that distributes multiple physical or virtual machine tests, enabling us to execute scripts in parallel (at the same time), resulting in the required test run time. This gives us fast and accurate feedback that greatly speeds up cross-browser and cross-platform testing. Se
Administrators should understand what serverless computing is and how it works, but functional building and deployment is primarily the domain of software developers; most administrators are not involved in their own company's serverless computing infrastructure. Administrators should understand what serverless computing is and how it works
Chapter 12 Zabbix Automation through the study of the previous chapter, you will find that Zabbix is a very flexible and powerful monitoring system, but it is a very heavy work to configure Zabbix in the real environment. Fortunately, Zabbix provides some tools that can
Requirements: recently the company purchased a number of new servers, all need to install domain control system for the branch to use, in order to save time and improve efficiency, how to quickly install all the servers solution: according to the current environment, use the following steps to complete ps: all the pictures below are experimental screenshots in the virtual machine. First of all, put the first
I also inadvertently came from a friend, according to him, also came from the Internet, the server-side code was originally linux version, but was modified by the great god to run on Windows. If you accidentally infringe your copyright, please contact me to delete it. Fortunately, this code
Samba (Service message Block) SMB Protocol Server Message Block, Service message Block CIFS Protocol Common Internet File System, General Internet File system Samba Project http://
First, the working principle and function of keepalived: keepalived was originally a powerful auxiliary tool designed specifically for LVS, which is mainly used to provide failover and health check functions-- to judge the availability of LVS load schedulers and node servers, and to isolate and replace them in time.
