Skip to content

Instantly share code, notes, and snippets.

@anuj-apdev
anuj-apdev / openssl-cheat-sheet.md
Last active December 21, 2023 18:42
openssl-cheat-sheet.md

Certificate Authority

# Generate an RSA key(private) only
openssl genrsa -out ca.key 2048

# Request a new X509 format certificate for the given key
openssl req -new -x509 -days 365 -key ca.key -subj "/C=CN/ST=GD/L=SZ/O=Acme, Inc./CN=Acme Root CA" -out ca.crt
@anuj-apdev
anuj-apdev / Linux_Boot_Process.md
Created August 31, 2021 14:18
Step by Step process of Operating System bootup

Booting Process in Computers

Warm vs Cold boot

  • Warm => reboot command/button or ctrl+alt+delete
  • Cold => Power buton On

Cold Boot starts =>

Mother Board Signal for Power supply

Setup Cloud Platform Steps

Client-side Installations

brew install kubernetes-helm kubectl ansible curl

# On rancher VM, we need to install docker
apt update
apt install docker curl

Data Serialization format

Avro

  • Row based format - Made after Hadoop Writable format's unability to be decompressed beyond Hadoop. - Entire row is read all the time - Schema can be maintained and evolved, meaning changes over the period of time

Parquet

  • Columnar Storage of data

Keybase proof

I hereby claim:

  • I am anuj-apdev on github.
  • I am anujp (https://keybase.io/anujp) on keybase.
  • I have a public key ASBDL_6P7cz2E_B28OkhgRHr8WLgatMxH6c9CUuWo3nzbAo

To claim this, I am signing this object: