Programmer Group

1. Introduction to Docker-Compose Compose is a tool for defining and running container docker applications.With Compose, you can use YAML files to fit all the services your application needs.Then, with one command, you can create and start all services from the YAML file pairing.Then you need to understand the basic syntax of YAML files. Basi ...

View all virtual machine status: [root@kvm7 vps] virsh list --all To view the specified virtual machine status: [root@kvm7 vps] virsh domstate vm01 running Start the virtual machine manually: [root@kvm7 vps] virsh start vmname To manually shut down a virtual machine: [root@kvm7 vps] virsh shutdown vmname Suspen ...

1. View file properties: ls -l filename - rw-rw-r-- 1 kiosk kiosk 0 Oct 2 17:05 file [1] [2] [3] [4] [5] [6] [7] [8] //notes: [1]file type - # Common documents d # catalog s # Socket socket, the open interface of a progra ...

swoole optimized configuration and stress test 1, Server hardware: 2, Server side: 3, Client: Modify the following file: vim /etc/sysctl.conf Configuration and installation of pressure measuring tools: 4, Server kernel optimization: 5, Testing 1, Server hardware: 2 vCPU 4 GB (I/O optimization) 100Mbps (peak) 2, Se ...

Introduction to Tomcat Tomcat was originally developed by Sun's software architect James Duncan Davidson The directories and files below the installation path after Tomcat is installed are important files for using or configuring Tomcat Tomcat Important Catalog bin: Stores Tomcat scripts to start and close conf: Store different Tomcat confi ...

The current file name is: multiprocessing.py #!/usr/bin/env python3 import os from multiprocessing import Process def child_proc(name): print('child process', name, '[',os.getpid(),']','start running...') if __name__ == '__main__': print('parent process', os.getpid()) for i in ran ...

brief introduction log server Improving security Centralized storage of logs Defect: Difficulty in log analysis ELK Log Analysis System Elasticsearch: Storage, Index Pool Logstash: Log Collector Kibana: Data visualization Log Processing Steps 1, centralize log management 2, Logstash and output to Elasticsearch 3. Index and store the f ...

CentOS 7 Linux Installation MongoDB - yum installation 1. Build repo resources of CentOS7 Enter / etc/yum.repos.d/ directory, create mongodb-org.repo file, edit this file with vim, and add repo resources.Http://mirrors.aliyun.com/mongodb/yum/redhat/7server/mongodb-org/3.0/x86_/ is the resource address provided by Alibaba clo ...

Overview of Memcached An Open Source High Performance Distributed Memory Object Cache SystemAll data is stored in memorySupports data of any storage typeSpeed up Web site access Memcached Caching Mechanism When a program writes a cache data request, the API interface of Memcached routes the KEY input routing algorithm module to a service in ...

Experimental environment squid server ens33:192.168.13.184 ens36:192.168.10.1 (host mode only) web server 192.168.13.151 client 192.168.10.10 (host mode only) I. ACL access control 1. Modify the configuration file on the squid server [root@squid ~]# vim /etc/squid.conf ##Modify profile # should be allo ...