Programmer Help

Absrtact: This paper mainly records the reason why the host name becomes bogon and the solution. Problem recurrence After a login, the host name becomes bogon, and then it will be bogon every time you log in to the Linux system. 1 Connecting to 192.168.35.128:22... 2 Connection established. 3 To escape to local shell, press 'Ctrl+Alt+]'. 4 5 ...

Summary The high availability architecture is kept + HAproxy. It uses HAproxy to do RabbitMQ load balancing and high availability, and kept to ensure the high availability of HAproxy. assembly IP address port RabbitMQ disk node-01 192.168.0.101 5672 RabbitMQ disk node-02 192.168.0.102 5672 RabbitMQ dis ...

Summary of sorting algorithm Bubble sort Two adjacent elements are compared in two loops, and one maximum or minimum element is screened out in each pass (the ordered area is later) def bubble_sort(data): # First level loop: loop once, representing a trip, and filter out a maximum or minimum element for i in range(len(data)-1): ...

Ansible Common Modules You can find the module you want from ansible-doc-l | grep module_name.Then use ansible-doc-s module_name to see the usage of this module. Official module list and description: https://docs.ansible.com/ansible/latest/modules_by_category.html One thing to note about how modules are used is state.Many modules will have thi ...

Function: Raspberry pie collects temperature and humidity and transmits them to cloud platform through HTTP protocol I. preparation: Raspberry pie 3b, dht11 temperature and humidity sensor, onenet platform II. onenet cloud platform configuration 1. Enter the official website and click the developer center 2. Add pr ...

Note: update with the previous blog Because the whole open source openstack installation process is too tedious, the command is too long, too tedious, so the entire installation command is written as a shell script. Too many scripts have been pushed github Source hosting center. This is the content of this script github Warehous ...

Note: update with the previous blog Because the whole open source openstack installation process is too tedious, the command is too long, too tedious, so the entire installation command is written as a shell script. Too many scripts have been pushed github Source hosting center. This is the content of this script github Warehous ...

1. Introduction to Fortress Machine In a specific network environment, in order to protect the network and data from external damage, various technical means are used to collect and monitor the system status, security events, network activities of each component in the network environment in real time, so as to centralize alarm, timely process ...

Blog Outline:1. Regular expressions(1) Definition of regular expressions(2) Use of regular expressions1. Basic Regular Expressions(1) grep command tool2. Extending regular expressions2. Text Editing Processor1.grep Command Tool2.sed Command Tool3.awk Command Tool 1. Regular expressions (1) Definition of regular expressions Regular expressio ...

Install the night God simulator and turn it on Open cmd in the Nox\bin directory To connect the mobile phone to the computer through USB, you need to enter the developer mode and turn on USB debugging About mobile phone - "click version number about 5-7 times Display device to indicate normal connection, display offline ...