Tag Archives: aws

cloud

Monitor Your Linux Servers Like a Pro – Now Open Source! 🎉

In both of my last startups, we relied heavily on Ubuntu EC2 instances running critical infrastructure. But there was always a missing piece:
A lightweight, self-hosted, dead-simple way to keep an eye on system health without setting up a full Prometheus stack or paying for yet another SaaS.

So we built our own.
And now we’re sharing it with you — excited to announce that Linux System Health Monitor is now open-source under the MIT license.

Whether you’re managing one Linux box or a fleet of servers, this Node.js-based suite has you covered with real-time monitoring, intelligent alerts, and easy deployment.

Continue reading →
Standard
cloud

What is a (docker) container?

Docker is an open-source platform for developing, shipping, and running applications. A containerization technology allows you to package applications and their dependencies into isolated containers that can be easily deployed and managed. Docker containers provide a lightweight, portable, and secure way to run applications in various environments. In the past, I wrote about it a few times.

Continue reading →
Standard
cloud

Add Users to Google Compute Engine / EC2 Instances

KeysIn the past, when I wanted to share a Linux box with other users, it was simply by creating another user and making sure their password are ‘strong’. These days, it’s much safer not to use passwords over ssh but rather keys in order to connect (over ssh) to your machines in the cloud.

Here is the full list of commands you need to do in order to add a user. It’s being tested on Ubuntu so if you are on another OS, please continue with caution.


###################################################################################
#
# Add More Users to Google Compute Engine / EC2 Instances
# Author: Ido Green | @greenido
# Date: 21/SEP/2015
#
###################################################################################
# If you wish to use passwords ignore this flag of –disabled-password
sudo adduser newuser-name –disabled-password
sudo su – newuser-name
mkdir .ssh
chmod 700 .ssh
touch .ssh/authorized_keys
# (!) Important – without these exact file permissions, you will not be able to
# log into this account using SSH.
chmod 600 .ssh/authorized_keys
# Edit the authorized_keys file and paste the public key for your key pair
# into the file. It should like:
# ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQClKsfkNkuSevGj3eYhCe53pcjqP3maAhDFcvBS7O6V
# Make sure to copy just the key without any spaces before/after it!
vi .ssh/authorized_keys
# Retrieving the Public Key from your private key file
# If you don't have your publich key (just the file of the private key)
# This is what you need to do in order to extract it:
chmod 400 the-new-key.pem
ssh-keygen -y
# When prompted to enter the file in which the key is, specify
# the path to your .pem file. For example:
/path_to_key_pair/the-new-key.pem
# You will get something like:
# ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQClKsfkNkuSevGj3eYhCe
# 53pcjqP3maAhDFcvBS7O6Vhz2ItxCih+PnDSUaw+WNQn/mZphTk/ab/wB96x
# Make sure to copy it without any spaces before/after
####
#
# Now, hold you finger and try to connect
#
####
ssh -i my_key.pem newuser-name@11.11.11.11
# If things are not going well try:
ssh -v -i my_key.pem newuser-name@11.11.11.11
# You should get the full details why things are not working.
# Another option: tail -f -n 80 /var/log/auth.log on the remote box
# If you wish to remove the user
sudo userdel -r olduser

view raw

Adding user to GCE or EC2.sh

hosted with ❤ by GitHub

Misc

Standard