Programmer Think

1. What is IP ADDRESS internet protocol ADDRESS ## network process address ipv4 internet protocol version 4 (for specific sub protocols, please refer to the network protocol.) ip is composed of 32 01s 11111110.11111110.11111110.11111110 = 254.254.254.254 The ip address consists of network bits and host bits, One 0 and one is called 1bit. 8bit ...

k8s learning Kubernetes(K8S) introduction advanced actual combat complete tutorial, dark horse programmer K8S complete tutorial See Kubernetes for more detailed tutorials md Other commands Boot auto start application # Start the chronyd service [root@master ~]# systemctl start chronyd # Set startup and self startup [root@master ~]# systemct ...

kubernetes persistent storage PV and PVC 1. Introduction of PV and PVC Volume provides a very good data persistence scheme, but there are still deficiencies in manageability. Take the previous example of AWS EBS. To use Volume, Pod must know the following information in advance: The current Volume is from AWS EBS. The EBS Volume has been crea ...

SHELL script - variable SHELL script introduction Programming language classification Compiled language Before the program is executed, it needs to be compiled into machine language and run the compiled results directly. The program has high execution efficiency, depends on the compiler, and has poor cross platform performance. Such as C, C ...

Background kafka Manager (now renamed CMAK) is the most popular kafka cluster management tool. It was first opened by Yahoo. Users can perform some simple cluster management operations on the Web interface.We install everything here from scratch.This JDK version selects [jdk1.8.0_301]; JDK8 official website download address. The version of ...

grid mutual trust configuration Mutual trust configuration: connect two virtual machines. Node 1 virtual machine can operate node 2 virtual machine by entering password. First, let's understand the difference between rsa and dsa? DSA signature is faster, but validation is slower. A DSA key of the same strength as RSA (1024 bits) generates a ...

Source configuration of [Linux dictionary] preface The YUM software warehouse can complete the tasks of installing, uninstalling, and automatically upgrading rpm packages. It can automatically find and solve the dependencies between rpm packages without requiring the administrator to install each rpm package one by one and manually, m ...

Remote access and control of [Linux dictionary] preface SSH is basically used for remote management of linux systems. The reason is very simple: Telnet, FTP and other transmission methods transmit user authentication information in plaintext, which is inherently unsafe and has the risk of being eavesdropped by the network. SSH (Secure ...

4. File IO Reference books: The contents of these two books are similar. The first one has a more detailed description of knowledge points, which is suitable for beginners; The second book is more direct. It is an introduction to various functions. It is suitable for use as a dictionary. If you don't understand it, go and have a look. To ...

Excerpt from the third chapter of the second edition of shell script creation utility Script 22 reminder tool Simple utilities like Stickies have been popular with Windows and Mac users for years. You can use them to keep small notes on the screen and send reminders. This application is ideal for recording phone numbers or other reminders. ...