This is all about securing servers with SSL/TLS certificates from udemy course SSL complete guide. The quality of SSL varies, you ...

//TODO [ ] https://www.youtube.com/watch?v=kQYQ_3ayz8w&list=PLvadQtO-ihXt5k8XME2iv0cKpKhcYqe7i&index=5 常用的关于networking 检查的 ...

This blog is for system design, please revisit frequently to refresh. The notes are mainly from https://www.educative.io/ and Yout ...

Check CPU information on Linux, just like check memory by watching /proc/meminfo cat /proc/cpuinfo## each processor has a dedicate ...

About LinkedList operation time complexity: Adding to either end of a linked list does not require a traversal, as long as you kee ...

In the situation that issue k8s instructions from inside the container, usually we use curl command to do that (if you have kubect ...

DNS is the phonebook of internet. Comparison of DNS server software, be aware of alternatives. Cloudflare DNS course 内容很不错。 Issue ...

This issue is from a machine without net-tools.x86_64 : Basic networking tools pre-installed, so netstat command does not exist. W ...

Sometimes I need to know IP of specified network interface, for example eth0. There are several ways to do it: ifconfig command, ...

Kubernetes version 1.13.2 When I was working on softlayer cluster, after installing kubernetes the kubectl command get stuck and r ...