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References:

• Tutorial ReactJS
• ReactJS Ecosystem Guide
• A collection of awesome things regarding the React ecosystem

Pengenalan React

Kenapa React disebut Library bukan Framework?

karena ada banyak pilihan untuk melakukan sesuatu dan kita harus memilih tools (package) sendiri dan membuat design system yang tepat untuk proyek tertentu

• Butuh static site? Pake Gatsby.js
• Butuh Server Side Rendering? Pake Next.js

budiantoip

Ubuntu:

• Copy the cert files to /etc/ssl/certs
• Run update-ca-certificates

CentOS:

1. Run update-ca-trust force-enable
2. Copy CA certificate files to /etc/pki/ca-trust/source/anchors
3. Run update-ca-trust
4. Restart any web engine service

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Limit HTTP method based on IPs

<Limit POST PUT DELETE>
 order deny,allow
 deny from all
 #allow from localhost
 #allow from 127.0.0.1
 allow from xxx.xxx.xx.xx
</Limit>

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Traefik Use Cases

• Reverse Proxy
• API Gateway
• Load Balancing
• Certificate Management
• Kubernetes Ingress

Traefik Providers

• a provider links an infrastructure component (Orchestrator, Container Engine, Key-Value store, or File to Traefik)
• Configure Traefik to connect to the Provider

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Get My Public IP Address

https://whatismyipaddress.com/

Get Internet Provider Information Given a Public IP Address

http://wq.apnic.net/static/search.html

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journalctl log files default location

/run/log/journal

How to move default location to /var/log/journal

sudo mkdir -p /var/log/journal
sudo systemd-tmpfiles --create --prefix /var/log/journal

logrotate the log file

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Install MySQL 5.7 on Ubuntu 22.04

Reference: https://www.devart.com/dbforge/mysql/how-to-install-mysql-on-ubuntu/

# Download installer package
wget https://dev.mysql.com/get/mysql-apt-config_0.8.12-1_all.deb

# Install package
sudo dpkg -i mysql-apt-config_0.8.12-1_all.deb

# When a dialog pop up, choose the ubuntu bionic

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References

• https://www.nginx.com/blog/maximizing-php-7-performance-with-nginx-part-i-web-serving-and-caching/
• https://www.cloudbees.com/blog/tuning-nginx
• https://danielmiessler.com/blog/wordpress-nginx-speed-guide/

Check CPU info

lshw -short -class cpu

Set worker_processes from auto to 2 x num_of_cpu. if we only have 1 cpu, then set it to 2.

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Nginx connection debugging

References:

• How to enable debugging log in nginx
• Logging With NGINX – How to Configure It and What to Watch Out For
• Nginx debugging and major issues - Solved
• Diagnostic Logging with NGINX - Detailed debug logging without changing error log severity
• Nginx Health Checks

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wget https://github.com/paradiseduo/tcping/releases/download/3.6/tcping.zip
unzip tcping.zip
chmod +x tcping
mv tcping /usr/local/bin/
sudo xattr -rd com.apple.quarantine /usr/local/bin/tcping