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AIOps
AIOps
AIOps for Dummies
AIOps & Visibility For Dummies
BigData
BigData
Hadoop and big data tool set
Data analysis and visualization tool Apache Superset
Hadoop
Hadoop
Hadoop 2.6.3 dynamically add/remove DataNode
Hadoop namenode format on new cluster
Hadoop HDFS HA show two StandBy NameNode
Hadoop default port and role
Install Hadoop 2.6.3 cluster on CentOS 6.7
Cloud
Cloud
CloudService
CloudService
AWS
AWS
use AWS S3 to host static website
Enhance S3 cross region replication with lambda in AWS
Set AWS S3 bucket permission with mc tool
Introduce to system demage level
Visit self-host AWS s3 service with aws cli
Azure
Azure
Add reverse DNS record for public ip in Azure
Application of Azure student account
OracleCloud
OracleCloud
disable Ubuntu default firewall on Oracle Cloud
Kubernetes
Kubernetes
An overview of Kubernetes components
Kubernetes Installers Tools
Summary of Managed Kubernetes Services
Most frequently used kubectl commands
CloudNative
CloudNative
12 factor in cloud native design
Cloud Service Design Pattern
Container
Container
Colima
Colima
Colima - container runtimes on MacOS
Crictl
Crictl
Container Runtime Interface (CRI) CLI
Docker
Docker
Docker Cheat Sheet
Management of Docker Containers Network
Manage Docker Containers Volume and Environment
Creating and Managing Container Images
Podman
Podman
Podman Cheat Sheet
Snaps
Snaps
Common usage of Snaps
DNS
DNS
Common usage of dig command
Public DNS over TLS recommendation
Name.com coupon
Public Free DNS Service
What is a HSTS domain
Debug
Debug
common usage of tcpdump
Find C/C++ memory leak with valgrind on Linux
Debug coredump with gdb
DevOps
DevOps
Latency Numbers Every Programmer Should Know
Ansible ad hoc command examples
Server batch management tools in DevOps
Common OTP implementation in Shell, Python and Go
Dev workflow
Opensource project management system recommendation
Modern monitoring system summary
pssh omit strict host key check
pssh execute local script on remote machines
Batch send/retrive file with pscp/pslurp in pssh
Usage of Systemd on Linux
CI CD
CI CD
Head First About CI and CD in DevOps
Jenkins
Jenkins
Most frequently used plugin in Jenkins
Implement Jenkins HA with bash, rsync and etcd
Store multiline string parameter into file in Jenkins
Jenkins RestAPI call with Error 403 No valid crumb was included in the request
Jenkins common REST API
IaC
IaC
Head First Iac - Terraform
DevSecOps
DevSecOps
Using Google Authenticator for SSH Connections
Common implementation of TLS/SSL protocol
Head First DevSecOps
Linux intrusion trace cleaning
nich - quickly analyze open ports vulnerabilities
OpenSSL Cheatsheet
Sign and Verify file with SSH Keys
Distributed System
Distributed System
Key Characteristics of Distributed Systems
Engineering
Engineering
Engineering blogs recommendation
RSS of engineering blogs
Frontend
Frontend
Icon material website
JavaScript
JavaScript
Event listener in JavaScript
Introduction to event in JavaScript
Fun
Fun
Charles license generator
A collection of cloud resource free trial
Funny command line browser Lynx
Easter eggs in vim
When GitHub unavaiilable
When Google unavailable
When Stack Overflow maintain
Zero-width non-breaking space
Chinese
Chinese
新加坡华语
English
English
Learning English Idioms
Git
Git
Git Cheat Sheet
delete untracked files with git clean
git GUI recommendation
Connect local git repo to GitHub with ssh
Go
Go
Channel based concurrency control in Go
Clear screen in Golang
Reduce binary file size in Golang
Cheatsheet for golang
An Implementation of random.shuffle in golang
Learning Go
HTTP SSL
HTTP SSL
/usr/bin/curl: Argument list too long
ignore invalid and self signed ssl check with curl and wget
use wget to download the whole website
Run web based terminal with gotty
Head First HTTP
Cross platform HTTP/S benchmark tool - Cassowary
Introduction to QUIC
Realtime web benchmark tool on CLI
Config nginx as reversed proxy for websocket
Introduction to SSL Pinning
Remove password for a password protected SSL private key
HTTP CLI client and REST API tool
What Is A REST API?
Linux
Linux
Find out all the Kernel Boot Parameters
Apparmor conflicted with ntpd: apparmor=DENIED operation=capable
delete file: Argument list too long in Linux
awk common usage in Linux
Run a process in background in Linux
Change hostname in Linux
How to lock important file on Linux
md5, sha1, sha256, sha512 checksum in Linux
Clean penetration trace in Linux
Commonly used performance check commands in Linux
Hotkey with Ctrl in Linux
Use crontab and flock to control cron job sequence
Delete all files EXCEPT the certain pattern
file and directory permission - rwxst
Check block size for disk in Linux
get hardware infomation and temperature
Search manual doc on Linux
dstat common usage
Release and recycle disk space on Linux
Common usage of find in Linux
nf_conntrack: table full, dropping packet
Forbid Output Redirection to avoid overwrite the existing file
Allow and forbid ping in Linux
Generate random hexadecimal in Linux
Check glibc version in Linux
Usage of Linux grep
Read hex file in Linux
using iptraf to check network traffic in Linux
Linux kernel bug list
Resources for Linux kernel development
Kick out inactive user on Linux
Check last successful/failed login user on Linux
Calc last failed login user with source ip on Linux
ls -l detail on Linux
Check PID open files on Linux
Tune max open files on Linux
Performance monitor and tracing command on Linux
mosh - using UDP based SSH tool on Linux
file transfer with nc command on Linux
Linux disk visualization tool - ncdu
Linux kernel: neighbour table overflow
Summary of net related command of Linux
Linux netstat usage
Nginx config for high concurrency
Usage of Nginx module http_stub_status_module
Listen ipv4/ipv6 port in nginx configuration
Nginx supported signal
MySQL optimization on 256MB Linux
20 Linux system performance tools
Linux POSIX character set
Linux process states
purge file system cache on Linux
config SSH port in rsync on Linux
scp usage on Linux
sed usage on Linux
Ss in SetUID、SetGID and Tt in Sticky bit
TCP/UDP port forwarding with socat
source a file to Linux Path
Avoid inputting yes on POSSIBLE BREAK-IN ATTEMPT
Linux CPU/MEM/IO benchmark tool sysbench
(De)compress gz/bz2/xz file with tar command
Too many connections in Linux
Linux vulnerability and bug scan
Omit case sensitive in ls command
Subscribe Linux Kernel Mail List
Why should we forbid THP on Linux
Manual
Manual
Yi's Manual
tldr - a better man page with example
Network
Network
TCP state check and summary
Get my public IP from browser and shell
Head first network
Get multi location Ping result
Fundamental Knowledge of IP
Port based speed limit/traffic control on Linux
TCP congestion control
TCP State Transition Diagram (RFC793)
NoSQL
NoSQL
Introduction to gossip
Head First NoSQL
NoSQL - modern KV system comparison
CAP theory for common NoSQL system
MongoDB
MongoDB
MongoDB 性能优化
MongoDB 监控指标汇总
Redis
Redis
Aliyun Redis best practice
Change and Save Redis configuration during running
From 0 to 1 - create redis cluster
Head First Redis
parse and decode Redis AOF file with Python
Commands for Redis clients
Useful cluster commands for Redis Cluster
Redis compatible nosql system performance comparison
Redis config summary and reference
Redis source code - how to get started
Redis Memory Usage Explanation
Redis Optimization Cheatsheet
Redis persistence Explanation - RDB and AOF
Redis rebalance - slot migration process
Redis source code files description
Redis tips and tricks
RocksDB
RocksDB
RocksDB Reference Collection
ZooKeeper
ZooKeeper
Introduction to Zookeeper
OS
OS
ArchLinux
ArchLinux
Package management in Arch
CentOS
CentOS
Config Let’s Encrypt to support Wildcard Certificate on CentOS 7
Add user into admin group on CentOS
Nginx benchmark tools (ab/webbench) Usage on CentOS 6.7
Config nginx to support SSL/TLS on CentOS 6.7
Hide nginx version on CentOS
Compile nginx-1.13.10 to support http/2 and Server Push on CentOS 7
CentOS 6.x install different version of gcc 4.8/4.9/5.2
Add SWAP partition on CentOS 6/7
Config extanded repo on CentOS 6/7
“WARNING: Readline services not available or not loaded.” on CensOS 6.x
send email using sendmail on CentOS
Modify timezone on CentOS
Using yum to find out which package provide command/so on CentOS
Install and configure Ansible on CentOS 6.7
Install and Configure BT Transmission on CentOS 6.7
iostat command cannot found on CentOS
mkfs.xfs command not found on CentOS
Configure load balance using Nginx 1.8 on CentOS 6.7
Debian Ubuntu
Debian Ubuntu
Compile and install ocserv on Debian 10
Configure BBR on Debian and Ubuntu
Extract files and content from deb package
Disable ipv6 on Ubuntu 20.04
Install sar error: Please check if data collecting is enabled
Upgrade debian 10 to debian 11
FreeBSD
FreeBSD
Alternative commands on FreeBSD
Build your own kernel of FreeBSD
Change csh to bash on FreeBSD
Configure FreeBSD to forbid ping (ICMP)
FreeBSD git repo
Install ocserv on FreeBSD
Using dig on FreeBSD
FreeBSD system update and package installation
Upgrade To FreeBSD 13 From FreeBSD 12
MacOS
MacOS
batch delete .DS_Store files on MacOS
Total Commander alternative on MacOS
statistic of TCP/UDP port and service on MacOS
forbid Chrome auto update on MacOS
Clean system log on MacOS
MacOS development environment essential list
Get a plain text of man page without backspaces and underscores on MacOS and BSD
Mac iTerm2 login CentOS warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory
MacOS mysql ERROR! The server quit without updating PID file
MacOS Sublime Text Vim mode continuously press
MacOS uninstall Jenkins
SUSE
SUSE
OpenSUSE package management tool - Zypper
PHP
PHP
Compile and install PHP 5.6 on CentOS 6.x
LNMP install phpMyAdmin on CentOS
PHP configure: error: mcrypt.h not found. Please reinstall libmcrypt
PHP compile Don't know how to define struct flock on this system, set --enable-opcache=no
PHP 5.6 start failed to open configuration file '/usr/local/php/etc/php-fpm.conf'
Performance
Performance
Performance checkpoints in Linux
Linux kernel parameter - memory dirty page
Enable/Disable high resolution timers in Linux
Linux kernel parameters - network
Linux kernel parameters optimization
Check Linux kernel parameter from proc
USE Method: Linux Performance Checklist
Tuning Linux I/O Scheduler for SSDs
Perl
Perl
Head First Perl - an introduction
Python
Python
Django common commands cheat sheet
implement lru cache in Python
Using Python socket to get public address
Using Python send http request
Python ABC
Python bisect module demo
common package and module in Python
Python asynchronous programming demo: process/thread pool
use datetime to deal with time in Python
Debug in Python
currency calculation using decimal in Python
Python decorators usage and example
Get local IP address with Python
Iterate over multiple lists (tuple) simultaneously in Python
List, dictionary, set comprehension in Python
Python performance analysis with Profile module
General Python project structure
usage of virtualenv in Python
Program in Pythonic way
single and double underscore of class member name in Python
dict sort in Python based on key, value
try except else finally in Python
Multithread Efficiency Comparison between Python and PyPy
Start a new Python3 Env in 10 sec
Ruby
Ruby
Head First Ruby on Rails with MacOS
Head First Ruby
SRE
SRE
School of SRE - Learning materials
Better Practices of Site Reliability Engineering
Chaos Scenario in chaos-mesh
Job Handover from Dev to SRE
SLA of different cloud service providers
Shell
Shell
Summary of Top 300 common shell commands
check present shell on Linux
Trick to repeat last command on Linux
config Linux terminal support multilingual like Chinese
set environment variable in different shell
Bash
Bash
Close output redirect in Bash
Linux bash cheatsheet
Arithmetic operation in Bash
Array in Bash
get file name from path in Bash
Concurrency in shell scripts with timeout
bash debug
Detach foreground process from terminal on Linux
Usage of $ sign in Bash
Judge file exists in Bash
Function in Bash
Judge whether present user is root in Bash
Remove color codes from output with sed in Linux bash
variable replacement and truncate in bash
Different types of user switch on Linux
Linux bash test statement
Different types of variables in Linux and Bash
Different loop in Bash
Sh
Sh
create and write a file with EOF in sh
change stdout with ANSI character set
Tips
Tips
RAID Capacity Calculator
Get union, intersection and difference of 2 files with uniq
Chrome offline download address
extract multi segments of a json file and merge them into 1 line with jq
Using curl to output detail time consuming of http
Alternative of grep in Linux
tmux hotkey cheatsheet on Linux
RSS resource list
rsync usage on Linux
get ssh public key from private key
sublime 2/3 enter/start vim mode
config PATH in supervisor
Two ways to make tcpdump work together with Wireshark
Search your technical books
decompress password protected zip file
Vim CheatSheet
Vim Hotkey cheetsheet
Vim reference
Web status page recommendation
WLB
WLB
Health food essential nutrients
RUN
RUN
Work Around the World
Remote work summary
Work at Denmark
Work at Netherlands
Work at Netherlands
Table of contents
海外工作生活 - 荷兰
Work at Germany
Work at Japan
Work at Singapore
Work at Sweden
Table of contents
海外工作生活 - 荷兰
Work at Netherlands
海外工作生活 - 荷兰
小人物 A Nobody
留学工作在荷兰的数据科学家
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