Oleg Bogatenko DoZator

Install certbot from repo

$ sudo apt install certbot python3-certbot-nginx

Generate secret `dhparam.pem`

$ cd /etc/ssl

Generate CSR and key in Linux

Run the following command to generate a CSR and key

$ sudo openssl req -new -newkey rsa:2048 -nodes -keyout domainname.com.key -out domainname.com.csr

Creating the SSL Certificate and Key

$ sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout selfsigned.key -out selfsigned.crt

Download the Cloudwatch agent

$ wget https://s3.amazonaws.com/amazoncloudwatch-agent/ubuntu/amd64/latest/amazon-cloudwatch-agent.deb

Install Cloudwatch agent package

$ sudo dpkg -i -E ./amazon-cloudwatch-agent.deb

Run mongodb without auth

  docker run --name mongo_db --cpus="1" -m 2G -e MONGODB_EXTRA_FLAGS='--wiredTigerCacheSizeGB=1' --restart always -v /home/$USER/.mongodata:/data/db -d mongo:3.6

Connect to mongodb without auth and create root user

 use admin

Install Truffle

    npm install -g truffle

Install Ganache

To install ganache globally as cli tool:

package main

import (
    "context"
    "net/http"

    "github.com/aws/aws-lambda-go/events"
    "github.com/aws/aws-lambda-go/lambda"

SSH key types

RSA: It depends on key size. If it has 3072 or 4096-bit length, then you’re good. But 2048 bit keys are indeed acceptable until 2030.

How many bits my ssh key is:

    ssh-keygen -l -f ~/.ssh/{key_name}.pub

Make encrypted file with a `gpg` extension

When executing command, it prompts you to enter passphrase.

  gpg --symmetric --cipher-algo aes256 filename.ext

	FROM node:16-alpine3.12

	RUN npm install -g ganache-cli

	CMD ["ganache-cli", "-h", "0.0.0.0"]