What is a message queue?
Message queues are also called message queues, or mailboxes. It is a communication mechanism of Linux. The data transmitted by this communication mechanism has a certain structure, not a simple byte stream.
The essence of message queue is actually a linked list prov ...
Posted by Pottsy on Sat, 10 Aug 2019 15:57:00 +0200
Understanding docker security
Namespace Isolated Security
Security of Control Group Resource Control
Kernel Capability Mechanisms
Docker Server Protection
Other security features
Container Resource Control
Block IO Restrictions
Posted by sumathi on Sat, 10 Aug 2019 03:07:35 +0200
Summary of orders
This command is designed to work without user interaction.
curl is a tool for transferring data from or to servers. "Transfer data to the server or get data from the server"
The supporting protocols are DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3S, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, ...
Posted by poirot on Fri, 09 Aug 2019 12:20:28 +0200
This article is the third article on the bottom implementation of dead Synchronized, which is about the implementation of heavy lock.
This series of articles will comprehensively analyze the synchronized lock implementation of HotSpot, including bias lock, lightweight lock, heavy lock lock lock lock, unlock, lock upgrade process and source cod ...
Posted by Lassie on Thu, 08 Aug 2019 13:17:02 +0200
Three-step installation of kubernetes cluster
This paper introduces how to redevelop kubernetes, how to manage warehouses, how to manage git branches, how to compile and distribute code by CI, and how to contribute code to the community. With practical examples, it is hoped to be helpful to everyone.
Construction of De ...
Posted by x_maras on Wed, 07 Aug 2019 09:30:46 +0200
Disadvantages of Shell Variables
shell variables are weak types
The default is string type
Syntax: declare [+/-] [option] variable name
- Setting type attributes for variables
+ Cancel the type attribute of a variable
- a: Declare variables as arrays
- i: Declare variables as ...
Posted by NickG21 on Tue, 06 Aug 2019 10:28:00 +0200
Unix Shell exemplar refines Chapter 6 - AWK utility has six exercises, from simple to complex, currently done the first three questions, the latter three questions feel very laborious to do, about loops, arrays, functions, do not know how to do.
AWK Exercise 1: Exercise 1 mainly focuses on the operation of regular expressions with patterns. So ...
Posted by jesus_hairdo on Tue, 06 Aug 2019 09:13:50 +0200
We have planned two hosts in advance. They are:
server-1 is used as a client to collect logs, import them into MySQL database of server-2, and display the front-end web through Log Analyzer.
First is the configuration of server-2
yum install nginx php -php-fpm php-mysql mysql-server ...
Posted by Jassal on Mon, 05 Aug 2019 12:09:40 +0200
1. Configure the java environment of two tomcat back-end services separately
1) Prepare jdk8 compression packages
[root@tomcat jdk]# pwd
root@tomcat jdk]# ls
2) Unzip the jdk package in the current directory and create a soft connection
[root@tomcat jdk]# tar xvf jdk-8u211-linux-x64.tar.gz
Posted by Major Tom on Mon, 05 Aug 2019 11:11:31 +0200